CN110590091A - A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment - Google Patents
A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment Download PDFInfo
- Publication number
- CN110590091A CN110590091A CN201910907291.5A CN201910907291A CN110590091A CN 110590091 A CN110590091 A CN 110590091A CN 201910907291 A CN201910907291 A CN 201910907291A CN 110590091 A CN110590091 A CN 110590091A
- Authority
- CN
- China
- Prior art keywords
- anode
- hexavalent chromium
- cathode
- soil
- oil sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 58
- 239000002689 soil Substances 0.000 title claims abstract description 55
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 230000000813 microbial effect Effects 0.000 title claims abstract description 32
- 239000000446 fuel Substances 0.000 title claims abstract description 31
- 230000009467 reduction Effects 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000006260 foam Substances 0.000 claims abstract description 15
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 6
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 abstract description 15
- 229930195733 hydrocarbon Natural products 0.000 abstract description 14
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 14
- 244000005700 microbiome Species 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000005416 organic matter Substances 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000000593 degrading effect Effects 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 238000006722 reduction reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 150000001844 chromium Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- -1 electroplating Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000219 mutagenic Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000010891 toxic waste Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Electrochemistry (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明公开了一种用于油泥处理同步还原土壤六价铬的沉积型微生物燃料电池，它包括壳体、阴极、阳极、质子交换膜、导线和电阻，阴极为石墨板，置于六价铬污染土壤上部；阳极为开孔泡沫碳材料，置于油泥下部的油泥中；阴极与阳极之间设置有质子交换膜；阴极与阳极通过导线与电阻或用电设备相连接。本装置不需要额外的电能输入，在降解油泥中石油烃等污染物的同时还原污染土壤中的六价铬，且阳极的微生物会利用油泥中的有机物产生电能。本发明是一种经济有效的降解油泥中石油烃同步还原土壤中六价铬且回收电能的技术。
The invention discloses a sedimentary microbial fuel cell for synchronous reduction of hexavalent chromium in soil for oil sludge treatment, which includes a shell, a cathode, an anode, a proton exchange membrane, a wire and a resistor, and the cathode is a graphite plate placed on a hexavalent chromium The upper part of the polluted soil; the anode is an open-cell foam carbon material, which is placed in the sludge at the lower part of the sludge; a proton exchange membrane is arranged between the cathode and the anode; the cathode and the anode are connected to a resistor or an electrical device through a wire. The device does not require additional electric energy input, and can reduce hexavalent chromium in polluted soil while degrading petroleum hydrocarbons and other pollutants in the oil sludge, and the microorganisms in the anode can use the organic matter in the oil sludge to generate electricity. The invention is an economical and effective technology for degrading petroleum hydrocarbons in oil sludge and synchronously reducing hexavalent chromium in soil and recovering electric energy.
Description
技术领域technical field
本发明是属于工业废弃物处置技术领域，具体涉及一种用于油泥处理同步还原土壤六价铬的微生物燃料电池。The invention belongs to the technical field of industrial waste disposal, and in particular relates to a microbial fuel cell for synchronous reduction of hexavalent chromium in soil for oil sludge treatment.
背景技术Background technique
微生物燃料电池(MFC)是利用微生物为阳极催化剂，将储存在有机物中的化学能直接转化为电能的理想装置。该技术操作条件温和、安全高效、绿色、成本低廉、结构简单、易于管理，是近年来的研究热点。Microbial fuel cell (MFC) is an ideal device that uses microorganisms as an anode catalyst to directly convert chemical energy stored in organic matter into electrical energy. The technology is mild in operating conditions, safe and efficient, green, low in cost, simple in structure, and easy to manage. It has become a research hotspot in recent years.
过去的几十年，研究者研制出了各种各样的材料作为MFC的阳极材料，其中二维碳基材料比如石墨棒、碳纸、石墨片、碳布、石墨颗粒以及活性炭等是前期研究者们的研究重点。非碳基如不锈钢、钛材料等金属材料，由于其电导率比碳基材料高2-3个数量级，且具有较高的可塑性及物理强度，在微生物燃料电池研究中也受到了研究者们的普遍关注。开孔泡沫碳是一种三维碳基材料，相比以上材料，其具有较大的比表面积和一定的孔状结构，极有利于微生物的附着生长，且有较高的导电性及物理强度，因此本发明采用开孔泡沫碳作为阳极材料。In the past few decades, researchers have developed a variety of materials as anode materials for MFCs, among which two-dimensional carbon-based materials such as graphite rods, carbon paper, graphite sheets, carbon cloth, graphite particles, and activated carbon are preliminary studies. the focus of their research. Non-carbon-based metal materials such as stainless steel and titanium materials are also favored by researchers in the research of microbial fuel cells because their electrical conductivity is 2-3 orders of magnitude higher than carbon-based materials, and they have high plasticity and physical strength. General concern. Open-cell foam carbon is a three-dimensional carbon-based material. Compared with the above materials, it has a larger specific surface area and a certain pore structure, which is very conducive to the attachment and growth of microorganisms, and has higher electrical conductivity and physical strength. Therefore, the present invention uses open-cell foamed carbon as the anode material.
油泥中含有大量的石油烃(PHCs)和其他污染物质，包括中国在内的许多国家将其列为危险废弃物。钻井废油泥在很多方面对环境都有影响，对环境的污染主要表现在：(1)污染面积大、区域广；(2)钻井废油泥中的碱性物质、可溶性盐类和石油类物质等能够对土壤的结构产生较大的影响，如能够使土地出现龟裂板结的现象，从而对植物的正常生长产生很大的危害作用；(3)钻井废油泥中包含的重金属离子和有机物、高分子聚合物等在环境中很容易进入食物链，最终对人类的健康和安全等产生较大的危害；(4)如果钻井废油泥进入到河流、海洋或渗入地层，会对地下水和水生生物的正常生长产生不良影响等。对钻井废油泥的主要治理技术方法主要有化学法、物理法和生物修复法等。其中化学法和物理法成本较高，且容易对土壤的理化性质造成严重的不利影响。生物修复法具有成本较低，操作简单、无二次污染等优点。但由于油泥中的营养严重失调，本土微生物不足，所以，在油泥微生物修复过程中存在着污染物降解速率低，修复周期长，多环芳烃类污染物难以降解等缺点。Oil sludge contains a large amount of petroleum hydrocarbons (PHCs) and other pollutants, and many countries, including China, list it as hazardous waste. Drilling waste oil sludge has an impact on the environment in many ways, and the pollution to the environment is mainly manifested in: (1) large polluted area and wide area; (2) alkaline substances, soluble salts and petroleum substances in drilling waste oil sludge It can have a great impact on the structure of the soil, such as the phenomenon of cracking and compaction of the land, which will have a great harmful effect on the normal growth of plants; (3) the heavy metal ions and organic matter contained in the drilling waste oil sludge, high Molecular polymers can easily enter the food chain in the environment, and eventually cause great harm to human health and safety; (4) If the drilling waste sludge enters rivers, oceans or infiltrates into the formation, it will affect the normal life of groundwater and aquatic organisms. adverse effects on growth, etc. The main treatment techniques for drilling waste oil sludge mainly include chemical methods, physical methods and bioremediation methods. Among them, the chemical method and physical method are relatively expensive, and are likely to cause serious adverse effects on the physical and chemical properties of the soil. Bioremediation has the advantages of low cost, simple operation, and no secondary pollution. However, due to the serious nutritional imbalance in the oil sludge and the lack of local microorganisms, there are disadvantages such as low pollutant degradation rate, long repair period, and difficult degradation of polycyclic aromatic hydrocarbon pollutants in the process of oil sludge microbial remediation.
铬盐是应用非常广泛的化工原料之一，国内约10％的产品与铬盐有关，涉及高级材料、电镀、皮革、染料、医药等多种行业。近30年来，其需求量快速增大，据调查，目前中国直接生产重铬酸盐的企业多达30多家，年生产能力超过30万t，生产总量居世界第一。每生产1t铬盐产品，同时产生大约3t铬渣。我国每年实际产生约75万t有毒废渣，加之历年堆存的铬渣，累计量>200万t。铬是自然环境中常见的一种金属污染物，也是美国超级基金优先控制的前20种有毒物质之一。六价铬的化合物具有毒性和致癌性，主要因为铬在动物体内可以影响人体的氧化、还原和水解等生命活动，使蛋白质变性，干扰人体内正常的新陈代谢，导致病变和癌变，因此铬污染场地修复己成为土壤修复的重点。目前，针对土壤中铬污染修复方法主要有化学还原、化学清洗、和电动修复等。化学还原法不仅大量消耗还原剂，而且经还原之后的三价铬在土壤复杂环境下一段时间后，容易再次转化为六价铬；化学清洗法成本极高，很难被推广应用；电动修复技术需要消耗大量电能，而且修复效果不理想。Chromium salt is one of the most widely used chemical raw materials. About 10% of domestic products are related to chromium salt, involving various industries such as advanced materials, electroplating, leather, dyes, and medicine. In the past 30 years, its demand has increased rapidly. According to the survey, there are currently more than 30 enterprises in China that directly produce dichromate, with an annual production capacity of more than 300,000 tons, and the total production ranks first in the world. For every 1t of chromium salt product produced, about 3t of chromium slag are produced at the same time. my country actually produces about 750,000 tons of toxic waste residues every year, and the cumulative amount of chromium residues accumulated over the years is >2 million tons. Chromium is a common metal pollutant in the natural environment, and it is also one of the top 20 toxic substances prioritized by the US Superfund. Compounds of hexavalent chromium are toxic and carcinogenic, mainly because chromium can affect the life activities of the human body such as oxidation, reduction, and hydrolysis in animals, denature proteins, interfere with normal metabolism in the human body, and cause lesions and cancers. Therefore, chromium pollutes the site Restoration has become the focus of soil restoration. At present, the remediation methods for chromium pollution in soil mainly include chemical reduction, chemical cleaning, and electric remediation. The chemical reduction method not only consumes a large amount of reducing agent, but also the reduced trivalent chromium is easy to be converted into hexavalent chromium again after a period of time in the complex soil environment; the chemical cleaning method is extremely expensive and difficult to be popularized and applied; electric restoration technology It needs to consume a lot of power, and the repair effect is not ideal.
微生物燃料电池在处理油泥同时还原土壤中六价铬，不仅可以达到高效率、低能耗、低投入的修复效果，而且不会破坏土壤生态、操作简单、易于管理。Microbial fuel cells can restore hexavalent chromium in soil while treating oil sludge, which can not only achieve high efficiency, low energy consumption, and low investment restoration effect, but also will not damage soil ecology, and is simple to operate and easy to manage.
发明内容Contents of the invention
废弃的油泥含有石油烃、酚类化合物等，呈现强碱性、腐蚀性。长期堆积会造成地表植被的严重破坏，污染土壤和水源，危及人类的生存。现有的油泥处理方法都有各自的缺点和不足：处理时间长、工艺复杂、处理成本高等。六价铬有强毒性以及较强的致突变、致癌作用，对环境具有持久危险性。六价铬易溶于水，渗透性强，分离难度大，处理成本高，使用传统的修复方法很难达到高效率、低能耗、低投入的修复效果，而且易造成再次污染，破坏土壤生态。Discarded oil sludge contains petroleum hydrocarbons, phenolic compounds, etc., and is highly alkaline and corrosive. Long-term accumulation will cause serious damage to surface vegetation, pollute soil and water sources, and endanger human survival. The existing oil sludge treatment methods have their own shortcomings and shortcomings: long treatment time, complicated process, high treatment cost, etc. Hexavalent chromium has strong toxicity, strong mutagenic and carcinogenic effects, and has persistent danger to the environment. Hexavalent chromium is easily soluble in water, has strong permeability, is difficult to separate, and has high treatment costs. It is difficult to achieve high-efficiency, low-energy, and low-investment restoration results using traditional restoration methods, and it is easy to cause re-pollution and damage soil ecology.
本发明用微生物燃料电池处理油泥同步还原土壤中六价铬，微生物燃料电池由开孔泡沫碳阳极、石墨阴极、电阻、质子交换膜和导线构成，通过位于阳极的微生物消耗油泥中的石油烃产生电能，阴极室中六价铬污染土壤可以利用阳极产生的电子还原六价铬，结构简单，无需外部电能的输入，而且还能产生能量。较高的产电可为温度湿度计、pH计等电极供电。此技术是一项经济有效的降解油泥中石油烃同步还原六价铬的技术。The invention uses microbial fuel cells to treat oil sludge and simultaneously reduce hexavalent chromium in soil. The microbial fuel cells are composed of open-cell foam carbon anodes, graphite cathodes, resistors, proton exchange membranes and wires, and are produced by microorganisms at the anodes that consume petroleum hydrocarbons in oil sludge. Electric energy, hexavalent chromium contaminated soil in the cathode chamber can use the electrons generated by the anode to reduce hexavalent chromium, the structure is simple, no external electric energy input is required, and energy can also be generated. The higher power generation can supply power for electrodes such as temperature hygrometers and pH meters. This technology is a cost-effective technology for degrading petroleum hydrocarbons in oil sludge and simultaneously reducing hexavalent chromium.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
一种用于油泥处理同步还原土壤六价铬的微生物燃料电池，包括阴极、阳极、电阻和壳体；壳体(8)内设置有油泥(6)和六价铬污染土壤(7)，阴极(1)置于六价铬污染土壤(7)的上部，下表面与六价铬污染土壤相接触；阳极置于油泥(6)下部的油泥之中，位于阴极(1)下方15～45cm处，阴极(1)与阳极(2)之间设置有质子交换膜(4)，阴极(1)与阳极(2)通过导线(3)与电阻或用电设备(5)相连接。A microbial fuel cell for synchronous reduction of soil hexavalent chromium in oil sludge treatment, including a cathode, an anode, a resistor and a casing; the casing (8) is provided with oil sludge (6) and hexavalent chromium-contaminated soil (7), and the cathode (1) placed on the upper part of the hexavalent chromium-contaminated soil (7), and the lower surface is in contact with the hexavalent chromium-contaminated soil; the anode is placed in the oil sludge at the lower part of the oil sludge (6), and is located 15 to 45 cm below the cathode (1) A proton exchange membrane (4) is arranged between the cathode (1) and the anode (2), and the cathode (1) and the anode (2) are connected to resistance or electrical equipment (5) through wires (3).
所述阴极优选为长5～15cm,宽5～15cm,厚度0.3～0.8cm的石墨板。The cathode is preferably a graphite plate with a length of 5-15 cm, a width of 5-15 cm and a thickness of 0.3-0.8 cm.
所述阳极优选为长5～25cm,宽5～25cm,厚度0.3～0.8cm的开孔泡沫碳材料。The anode is preferably an open-cell foam carbon material with a length of 5-25 cm, a width of 5-25 cm, and a thickness of 0.3-0.8 cm.
所述导线(3)优选为铜导线。The wire (3) is preferably a copper wire.
所述电阻(5)优选为100-1000欧姆。The resistance (5) is preferably 100-1000 ohms.
所述壳体(8)的优选直径为15～35cm，高度为25～50cm。The preferred diameter of the housing (8) is 15-35 cm, and the height is 25-50 cm.
优选所述油泥和六价铬污染土壤厚度比为0.85～1.1。更优选油泥和六价铬污染土壤厚度为阴阳两极距离的一半。Preferably, the thickness ratio of the oil sludge and hexavalent chromium-contaminated soil is 0.85-1.1. More preferably, the thickness of oil sludge and hexavalent chromium-contaminated soil is half of the distance between the negative and positive poles.
本发明微生物燃料电池用于油泥石油烃的降解同步还原土壤中六价铬，与其他技术相比无需电能的输入，结构简单，建造和运行成本低，易于管理维护。本发明与单独微生物燃料电池处理六价铬污染土壤相比，土壤中的有机质不会在阳极被降解而造成土壤肥力下降，不影响土壤后续耕种。此外，产电菌与六价铬污染土壤隔开，土壤中存在的重金属不会对产电菌产生毒害作用。六价铬在酸性环境中还原效率高，本发明阳极产生的质子通过质子交换膜迁移至阴极室使阴极环境的酸碱度降低，有利于六价铬的还原。本发明与单独微生物燃料电池处理油泥相比，阳极通过导线传递至阴极的电子用于还原六价铬，无需氧气作为电子受体，不需要额外鼓入氧气。The microbial fuel cell of the present invention is used for the degradation of oil sludge and petroleum hydrocarbons to simultaneously reduce the hexavalent chromium in the soil. Compared with other technologies, the invention does not require the input of electric energy, has simple structure, low construction and operation costs, and is easy to manage and maintain. Compared with treating hexavalent chromium-contaminated soil with a single microbial fuel cell, the present invention does not degrade organic matter in the soil at the anode to cause soil fertility to decline, and does not affect subsequent cultivation of the soil. In addition, the electrogenic bacteria were separated from the hexavalent chromium-contaminated soil, and the heavy metals present in the soil would not have a toxic effect on the electrogenic bacteria. Hexavalent chromium has a high reduction efficiency in an acidic environment, and the protons generated by the anode of the present invention migrate to the cathode chamber through the proton exchange membrane to reduce the pH of the cathode environment, which is beneficial to the reduction of hexavalent chromium. Compared with the treatment of oil sludge by a single microbial fuel cell, the present invention uses the electrons transferred from the anode to the cathode through wires to reduce hexavalent chromium, without oxygen as an electron acceptor and additional oxygen blowing.
在使用开孔泡沫碳作为微生物燃料电池阳极的情况下，可获得的最大功率密度为30～33W/m3，对比一般的碳毡阳极，功率密度提高了30％左右；油泥中石油烃去除率达到80％～93％，大大增加了去除效果。以上都说明了开孔泡沫碳作为阳极材料具有极大的优势，既能为微生物提供大的比表面积，促进电子的传递速率，又能在合适的条件下输出高功率密度，是应用于微生物燃料电池阳极设计中有潜力的电极材料。In the case of using open-cell foam carbon as the anode of microbial fuel cells, the maximum power density that can be obtained is 30-33W/m 3 , which is about 30% higher than that of ordinary carbon felt anodes; the removal rate of petroleum hydrocarbons in oil sludge reaches 80% to 93%, greatly increasing the removal effect. The above shows that open-cell foam carbon has great advantages as an anode material. It can not only provide microorganisms with a large specific surface area, promote the transfer rate of electrons, but also output high power density under suitable conditions. It is suitable for microbial fuels. Potential electrode materials in battery anode design.
本发明是一种经济有效的降解油泥中石油烃同步还原土壤中六价铬且回收电能的技术。The invention is an economical and effective technology for degrading petroleum hydrocarbons in oil sludge and synchronously reducing hexavalent chromium in soil and recovering electric energy.
附图说明Description of drawings
图1：用于处理油泥同步还原六价铬的微生物燃料电池示意图Figure 1: Schematic diagram of a microbial fuel cell for synchronous reduction of hexavalent chromium in sludge treatment
图中：1-阴极；2-阳极；3-导线；4-质子交换膜；5-电阻或用电设备；6-油泥；7-六价铬污染土壤；8-壳体。In the figure: 1-cathode; 2-anode; 3-wire; 4-proton exchange membrane; 5-resistance or electrical equipment; 6-oil sludge; 7-hexavalent chromium polluted soil; 8-shell.
具体实施方式Detailed ways
如图1所示，本发明的一种微生物燃料电池，包括阴极、阳极、电阻和壳体；壳体(8)内设置有油泥(6)和六价铬污染土壤(7)，阴极(1)置于六价铬污染土壤(7)的上部，下表面与六价铬污染土壤相接触；阳极置于油泥(6)下部的油泥之中，位于阴极(1)下方15～45cm处，阴极(1)与阳极(2)之间设置有质子交换膜(4)，阴极(1)与阳极(2)通过导线(3)与电阻或用电设备(5)相连接。此系统结构简单，产电量高，无需外部电能的输入，建造成本低，易于管理。As shown in Figure 1, a kind of microbial fuel cell of the present invention comprises cathode, anode, resistance and casing; Oil sludge (6) and hexavalent chromium polluted soil (7) are arranged in casing (8), cathode (1 ) is placed on the upper part of the hexavalent chromium-contaminated soil (7), and the lower surface is in contact with the hexavalent chromium-contaminated soil; the anode is placed in the oil sludge at the lower part of the oil sludge (6), and is located at 15 to 45 cm below the cathode (1), and the cathode A proton exchange membrane (4) is arranged between (1) and the anode (2), and the cathode (1) and the anode (2) are connected to resistance or electrical equipment (5) through wires (3). The system has a simple structure, high output, no external power input, low construction cost and easy management.
本发明主要是微生物燃料电池阳极的微生物利用油泥中的石油烃产生电能，阴极室中六价铬污染土壤可以利用阳极产生的电子同步还原六价铬。本发明中沉积型微生物燃料电池装置，包括：壳体，阴极，阳极，电阻，质子交换膜和导线。阴极为长5～15cm,宽5～15cm,厚度0.3～0.8cm的石墨板，放置在六价铬污染土壤上方。阳极为长为5～15cm,宽5～15cm,厚度0.3～0.8cm的开孔泡沫碳，放置在油泥中，位于阴极下方15～45cm处，油泥和六价铬污染土壤厚度均大约为阴阳两极距离的一半。阳极开孔泡沫碳为市售成品，其密度为0.2～1.0g/cm3，孔隙率为30～80％,孔径为0.01～6mm，电阻率为1.0×10-2-10-5Ω·m，具有良好的导电性、比表面积大、稳定性好。阳极大的比表面积为微生物提供栖息场所，利于产电菌降解有机物且产电。电阻为100～1000欧姆。导线为铜导线。壳体的直径为15～35cm，高度为25～50cm。油泥来自各大油田在钻井、运输等过程中产生的含油废弃污泥，六价铬污染土壤来自饹馇堆积场地。阳极放置在油泥中，为微生物提供了栖息场所，使微生物富集在阳极表面，通过消耗油泥中的有机物产生电能，阴极放置在六价铬污染土壤上部，通过导线传递的电子将六价铬还原。本装置不需要额外的电能输入，在降解油泥中石油烃等污染物的同时还原污染土壤中的六价铬，且阳极的微生物会利用油泥中的有机物产生电能。The invention mainly uses the petroleum hydrocarbons in the oil sludge to generate electric energy by microorganisms in the anode of the microbial fuel cell, and the hexavalent chromium polluted soil in the cathode chamber can use the electrons generated by the anode to simultaneously reduce the hexavalent chromium. The deposition type microbial fuel cell device in the present invention includes: a casing, a cathode, an anode, a resistor, a proton exchange membrane and a wire. The cathode is a graphite plate with a length of 5-15cm, a width of 5-15cm, and a thickness of 0.3-0.8cm, which is placed above the hexavalent chromium-contaminated soil. The anode is an open-cell foam carbon with a length of 5-15cm, a width of 5-15cm, and a thickness of 0.3-0.8cm. It is placed in the oil sludge and is located 15-45cm below the cathode. half the distance. The anode open-cell foam carbon is a commercially available product with a density of 0.2-1.0g/cm 3 , a porosity of 30-80%, a pore diameter of 0.01-6mm, and a resistivity of 1.0×10 -2 -10 -5 Ω·m , has good electrical conductivity, large specific surface area and good stability. The large specific surface area of the anode provides a habitat for microorganisms, which is conducive to the degradation of organic matter by electrogenic bacteria and the generation of electricity. The resistance is 100-1000 ohms. The wires are copper wires. The diameter of the casing is 15-35 cm, and the height is 25-50 cm. The oil sludge comes from the oily waste sludge produced in the process of drilling and transportation in major oil fields, and the hexavalent chromium-contaminated soil comes from the hexavalent chromium accumulation site. The anode is placed in the oil sludge, which provides a habitat for microorganisms, enriches the microorganisms on the surface of the anode, and generates electricity by consuming organic matter in the oil sludge. The cathode is placed on the upper part of the hexavalent chromium-contaminated soil, and the electrons transmitted by the wire reduce the hexavalent chromium . The device does not require additional electric energy input, and can reduce hexavalent chromium in the polluted soil while degrading petroleum hydrocarbons and other pollutants in the oil sludge, and the microorganisms in the anode can use the organic matter in the oil sludge to generate electricity.
实施例1Example 1
壳体8内设置有油泥6(厚度为10cm)和六价铬污染土壤7(厚度为10c)，油泥来自各大油田在钻井、运输等过程中产生的含油废弃污泥，六价铬污染土壤来自饹馇堆积场地。壳体8的直径为15cm，高度为30cm,采用塑料材料制备。将阴极1置于六价铬污染土壤上部，为长10cm,宽10cm,厚度0.5cm的石墨板。阳极2置于壳体8底部的油泥中，位于阴极下方20cm处，阳极为长10cm,宽10cm,厚度为0.5cm的开孔泡沫碳。阴极1与阳极2之间设置有质子交换膜4，以便阳极产生的质子通过质子交换膜迁移到阴极表面。阴极1与阳极2通过导线3与电阻或用电设备5相连接，导线3为铜导线；电阻5的电阻值为500欧姆。The housing 8 is provided with oily sludge 6 (thickness is 10cm) and hexavalent chromium-contaminated soil 7 (thickness is 10c). It comes from the heaping site. The housing 8 has a diameter of 15 cm and a height of 30 cm, and is made of plastic material. The cathode 1 is placed on the upper part of the hexavalent chromium-contaminated soil, which is a graphite plate with a length of 10 cm, a width of 10 cm, and a thickness of 0.5 cm. The anode 2 is placed in the oil sludge at the bottom of the housing 8, 20 cm below the cathode, and the anode is an open-cell foam carbon with a length of 10 cm, a width of 10 cm, and a thickness of 0.5 cm. A proton exchange membrane 4 is arranged between the cathode 1 and the anode 2, so that the protons generated by the anode migrate to the surface of the cathode through the proton exchange membrane. The cathode 1 and the anode 2 are connected to a resistor or electrical equipment 5 through a wire 3, the wire 3 is a copper wire; the resistance value of the resistor 5 is 500 ohms.
在使用开孔泡沫碳作为微生物燃料电池阳极的情况下，可获得的最大功率密度为30～33W/m3，对比一般的碳毡阳极，功率密度提高了30％左右；油泥中石油烃去除率达到80％～93％，土壤六价铬还原率可达70％～90％，大大增加了去除效果。In the case of using open-cell foam carbon as the anode of microbial fuel cells, the maximum power density that can be obtained is 30-33W/m 3 , which is about 30% higher than that of ordinary carbon felt anodes; the removal rate of petroleum hydrocarbons in oil sludge reaches 80% to 93%, the soil hexavalent chromium reduction rate can reach 70% to 90%, greatly increasing the removal effect.
实施例2Example 2
壳体8内设置有油泥6(厚度为8cm)和六价铬污染土壤7(厚度为8cm)，油泥来自各大油田在钻井、运输等过程中产生的含油废弃污泥，六价铬污染土壤来自饹馇堆积场地。壳体8的直径为15cm，高度为25cm,采用塑料材料制备。将阴极1置于六价铬污染土壤上部，为长5cm,宽5cm,厚度0.3cm的石墨板。阳极2置于壳体8底部的油泥中，位于阴极下方16cm处，阳极为长5cm,宽5cm,厚度为0.3cm的开孔泡沫碳。阴极1与阳极2之间设置有质子交换膜4，以便阳极产生的质子通过质子交换膜迁移到阴极表面。阴极1与阳极2通过导线3与电阻或用电设备5相连接，导线3为铜导线；电阻5的电阻值为100欧姆，当导线3与用电设备温度湿度计连接时可利用微生物燃料电池产生的能量驱动用电设备。Housing 8 is provided with oily sludge 6 (thickness is 8cm) and hexavalent chromium-contaminated soil 7 (thickness is 8cm). It comes from the heaping site. The housing 8 has a diameter of 15 cm and a height of 25 cm, and is made of plastic material. The cathode 1 is placed on the upper part of the hexavalent chromium-contaminated soil, which is a graphite plate with a length of 5 cm, a width of 5 cm, and a thickness of 0.3 cm. The anode 2 is placed in the oil sludge at the bottom of the housing 8, 16 cm below the cathode, and the anode is an open-cell foam carbon with a length of 5 cm, a width of 5 cm, and a thickness of 0.3 cm. A proton exchange membrane 4 is arranged between the cathode 1 and the anode 2, so that the protons generated by the anode migrate to the surface of the cathode through the proton exchange membrane. The cathode 1 and the anode 2 are connected to the resistor or the electrical equipment 5 through the wire 3, and the wire 3 is a copper wire; the resistance value of the resistor 5 is 100 ohms, and the microbial fuel cell can be used when the wire 3 is connected to the temperature and humidity meter of the electrical equipment. The generated energy drives electrical equipment.
在使用开孔泡沫碳作为微生物燃料电池阳极的情况下，可获得的最大功率密度为30W/m3，对比一般的碳毡阳极，功率密度提高了25％左右；油泥中石油烃去除率达到80％～83％，土壤六价铬还原率可达70％～76％，大大增加了去除效果。In the case of using open-cell foam carbon as the anode of microbial fuel cells, the maximum power density that can be obtained is 30W/m 3 , compared with the general carbon felt anode, the power density is increased by about 25%; the removal rate of petroleum hydrocarbons in sludge reaches 80% ~83%, the reduction rate of hexavalent chromium in soil can reach 70%~76%, greatly increasing the removal effect.
实施例3Example 3
壳体8内设置有油泥6(厚度为20cm)和六价铬污染土壤7(厚度为20cm)，油泥来自各大油田在钻井、运输等过程中产生的含油废弃污泥，六价铬污染土壤来自饹馇堆积场地。壳体8的直径为35cm，高度为50cm,采用塑料材料制备。将阴极1置于六价铬污染土壤上部，为长25cm,宽25cm,厚度0.8cm的石墨板。阳极2置于壳体8底部的油泥中，位于阴极下方40cm处，阳极为长25cm,宽25cm,厚度为0.8cm的开孔泡沫碳。阴极1与阳极2之间设置有质子交换膜4，以便阳极产生的质子通过质子交换膜迁移到阴极表面。阴极1与阳极2通过导线3与电阻或用电设备5相连接，导线3为铜导线；电阻5的电阻值为1000欧姆，当导线3与用电设备pH计连接时可利用微生物燃料电池产生的能量驱动用电设备。The housing 8 is provided with oily sludge 6 (20 cm in thickness) and hexavalent chromium-contaminated soil 7 (20 cm in thickness). It comes from the heaping site. The housing 8 has a diameter of 35cm and a height of 50cm, and is made of plastic material. The cathode 1 is placed on the upper part of the hexavalent chromium-contaminated soil, which is a graphite plate with a length of 25 cm, a width of 25 cm, and a thickness of 0.8 cm. The anode 2 is placed in the oil sludge at the bottom of the housing 8, 40 cm below the cathode, and the anode is an open-cell foam carbon with a length of 25 cm, a width of 25 cm, and a thickness of 0.8 cm. A proton exchange membrane 4 is arranged between the cathode 1 and the anode 2, so that the protons generated by the anode migrate to the surface of the cathode through the proton exchange membrane. The cathode 1 and the anode 2 are connected to the resistor or the electrical equipment 5 through the wire 3, and the wire 3 is a copper wire; the resistance value of the resistor 5 is 1000 ohms, and when the wire 3 is connected to the pH meter of the electrical equipment, microbial fuel cells can be used to generate energy to drive electrical equipment.
在使用开孔泡沫碳作为微生物燃料电池阳极的情况下，可获得的最大功率密度为32～33W/m3，对比一般的碳毡阳极，功率密度提高了32％左右；油泥中石油烃去除率达到88％～93％，土壤六价铬还原率可达82％～90％，大大增加了去除效果。In the case of using open-cell foam carbon as the anode of microbial fuel cells, the maximum power density that can be obtained is 32-33W/m 3 . Compared with the general carbon felt anode, the power density is increased by about 32%; the removal rate of petroleum hydrocarbons in sludge reaches 88% to 93%, and the reduction rate of hexavalent chromium in soil can reach 82% to 90%, which greatly increases the removal effect.
本发明公开和提出的技术方案，本领域技术人员可通过借鉴本文内容，适当改变条件等环节实现，尽管本发明的制备技术已通过较佳实施例子进行了描述，相关技术人员明显能在不脱离本发明内容、精神和范围内对本文所述的技术路线进行改动或重新组合，来实现最终的制备技术。特别需要指出的是，所有相类似的替换和改动对本领域技术人员来说是显而易见的，他们都被视为包括在本发明精神、范围和内容中。The technical solutions disclosed and proposed by the present invention can be realized by those skilled in the art by referring to the content of this article and appropriately changing the conditions. The technical routes described herein are modified or recombined within the content, spirit and scope of the present invention to realize the final preparation technology. In particular, it should be pointed out that all similar substitutions and modifications will be obvious to those skilled in the art, and they are all considered to be included in the spirit, scope and content of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907291.5A CN110590091A (en) | 2019-09-24 | 2019-09-24 | A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907291.5A CN110590091A (en) | 2019-09-24 | 2019-09-24 | A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110590091A true CN110590091A (en) | 2019-12-20 |
Family
ID=68862958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910907291.5A Pending CN110590091A (en) | 2019-09-24 | 2019-09-24 | A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110590091A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687203A (en) * | 2020-07-16 | 2020-09-22 | 常州大学 | Device and method for remedying heavy metal contaminated soil through light energy-vertical electrokinetic remediation |
| CN113877959A (en) * | 2021-10-11 | 2022-01-04 | 中国计量大学 | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using plant microbial fuel cell technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386826A (en) * | 2014-09-19 | 2015-03-04 | 浙江大学 | Microbial fuel cell based method for treatment and detection of chromium-containing electroplating wastewater |
| CN105293855A (en) * | 2015-12-02 | 2016-02-03 | 哈尔滨工业大学 | Method of synchronously degrading excess sludge and treating hexavalent chromium wastewater |
| CN108704933A (en) * | 2018-04-26 | 2018-10-26 | 中国石油大学(北京) | A kind of device and method of the hexavalent chromium polluted soil of in-situ immobilization |
| CN110148771A (en) * | 2019-05-17 | 2019-08-20 | 天津大学 | A kind of appositional pattern microbiological fuel cell for oil-sludge treatment |
| CN210855731U (en) * | 2019-09-24 | 2020-06-26 | 天津大学 | Microbial fuel cell for synchronously reducing hexavalent chromium in soil through oil sludge treatment |
-
2019
- 2019-09-24 CN CN201910907291.5A patent/CN110590091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386826A (en) * | 2014-09-19 | 2015-03-04 | 浙江大学 | Microbial fuel cell based method for treatment and detection of chromium-containing electroplating wastewater |
| CN105293855A (en) * | 2015-12-02 | 2016-02-03 | 哈尔滨工业大学 | Method of synchronously degrading excess sludge and treating hexavalent chromium wastewater |
| CN108704933A (en) * | 2018-04-26 | 2018-10-26 | 中国石油大学(北京) | A kind of device and method of the hexavalent chromium polluted soil of in-situ immobilization |
| CN110148771A (en) * | 2019-05-17 | 2019-08-20 | 天津大学 | A kind of appositional pattern microbiological fuel cell for oil-sludge treatment |
| CN210855731U (en) * | 2019-09-24 | 2020-06-26 | 天津大学 | Microbial fuel cell for synchronously reducing hexavalent chromium in soil through oil sludge treatment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687203A (en) * | 2020-07-16 | 2020-09-22 | 常州大学 | Device and method for remedying heavy metal contaminated soil through light energy-vertical electrokinetic remediation |
| CN113877959A (en) * | 2021-10-11 | 2022-01-04 | 中国计量大学 | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using plant microbial fuel cell technology |
| CN113877959B (en) * | 2021-10-11 | 2023-09-15 | 中国计量大学 | A method to remediate soil contaminated by polycyclic aromatic hydrocarbons using plant microbial fuel cell technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Selvasembian et al. | Recent progress in microbial fuel cells for industrial effluent treatment and energy generation: Fundamentals to scale-up application and challenges | |
| Devda et al. | Recovery of resources from industrial wastewater employing electrochemical technologies: status, advancements and perspectives | |
| Abourached et al. | Wastewater treatment by microbial fuel cell (MFC) prior irrigation water reuse | |
| Chen et al. | Stacked microbial desalination cells to enhance water desalination efficiency | |
| Curtis | Low-energy wastewater treatment: strategies and technologies | |
| US20130017415A1 (en) | Integrated photo-bioelectrochemical systems | |
| Huang et al. | A glance of coupled water and wastewater treatment systems based on microbial fuel cells | |
| Jamal et al. | Treatment of fish market wastewater and energy production using halophiles in air cathode microbial fuel cell | |
| CN106630177B (en) | A method and device for treating coking wastewater and producing hydrogen using a microbial electrolytic cell | |
| Li et al. | Advances and prospects on the aquatic plant coupled with sediment microbial fuel cell system | |
| CN105502673A (en) | Device for simultaneously generating electricity and purifying sewage by taking steel slag as anode | |
| Mansoorian et al. | Evaluating the performance of coupled MFC-MEC with graphite felt/MWCNTs polyscale electrode in landfill leachate treatment, and bioelectricity and biogas production | |
| Yang et al. | Fabrication of SnO2-Sb reactive membrane electrodes for high-efficiency electrochemical inactivation of bacteria and viruses in water | |
| CN104829076B (en) | A kind of method of black smelly bed mud recycling treatment in polluted water body | |
| Das et al. | A sustainable approach for the production of green energy with the holistic treatment of wastewater through microbial electrochemical technologies: a review | |
| Xu et al. | A systematical review of blackwater treatment and resource recovery: Advance in technologies and applications | |
| Thakur et al. | Performance evaluation of microbial fuel cell with sewage wastewater and RO concentrate using composite anode made of Luffa aegyptiaca | |
| CN110590091A (en) | A microbial fuel cell for simultaneous reduction of hexavalent chromium in soil for oil sludge treatment | |
| Bose et al. | Sustainable approach to wastewater treatment and bioelectricity generation using microbial fuel cells | |
| Yang et al. | Treatment and nutrient recovery of synthetic flowback water from shale gas extraction by air‐cathode (PMo/CB) microbial desalination cells | |
| Abbassi et al. | Introduction to microbial fuel cells: challenges and opportunities | |
| CN109378508A (en) | A single-chamber microbial fuel cell adding degradable bacteria and using method thereof | |
| CN110148771A (en) | A kind of appositional pattern microbiological fuel cell for oil-sludge treatment | |
| CN210855731U (en) | Microbial fuel cell for synchronously reducing hexavalent chromium in soil through oil sludge treatment | |
| CN105152358A (en) | Combined method for restoring eutrophicated water body on basis of SMFC (sediment microbial fuel cell) and filamentous green algae |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191220 |