CN108249437A - A kind of preparation method of active carbon loading silver - Google Patents
A kind of preparation method of active carbon loading silver Download PDFInfo
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- CN108249437A CN108249437A CN201810146286.2A CN201810146286A CN108249437A CN 108249437 A CN108249437 A CN 108249437A CN 201810146286 A CN201810146286 A CN 201810146286A CN 108249437 A CN108249437 A CN 108249437A
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- activated carbon
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 200
- 239000004332 silver Substances 0.000 title claims abstract description 47
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 47
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 44
- 238000011068 loading method Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000012153 distilled water Substances 0.000 claims abstract description 18
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 18
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 18
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 239000003610 charcoal Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000007654 immersion Methods 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 18
- 238000002474 experimental method Methods 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 3
- 229910017604 nitric acid Inorganic materials 0.000 claims 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 7
- 230000001954 sterilising effect Effects 0.000 abstract description 6
- 239000003651 drinking water Substances 0.000 abstract description 5
- 235000020188 drinking water Nutrition 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 238000002791 soaking Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical class C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3234—Inorganic material layers
- B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of preparation methods of active carbon loading silver, are as follows：Certain carbon content active is taken, adding in salpeter solution is totally submerged activated carbon；Above-mentioned mixed liquor is sealed again, after 23~25h of immersion, filters and takes out activated carbon, is cleaned 3~5 times with distilled water；It adds in a certain amount of silver nitrate solution after the activated carbon cleaned is dried, is sealed after stirring, impregnate 23~25h；Sodium borohydride solution is added in into silver nitrate solution, is sealed after stirring evenly, treats that the reaction was complete, after standing 1~2h, activated carbon is taken out in filtering, is cleaned 3~5 times with distilled water, drying can obtain active carbon loading silver.A kind of preparation method of active carbon loading silver of the present invention, elemental silver is added in common absorbent charcoal material, silver is in activated carbon surface or duct, the secondary pollution during drinking water deep purification can be effectively eliminated, increase antibacterial and sterilizing ability, simultaneously can increasing specific surface area, increase absorption property.
Description
Technical field
The invention belongs to chemicals technical fields, and in particular to a kind of preparation method of active carbon loading silver.
Background technology
As water source of fresh water is increasingly in short supply, pollution of waterhead getting worse, drinking water advanced treatment research both at home and abroad is existing at present
In shape, active carbon adsorption technology is a technology being most widely used, the commonly used active carbon adsorption technology of household water filter.
Activated carbon has many advantages, such as that adsorption capacity is big as adsorbent, it is antiacid it is alkaline-resisting, chemical stability is good, parsing is easy.Suction-operated
It is concentration process of the dissolved impurity on activated carbon grain surface in water, so the specific surface area size of activated carbon is to influence adsorptivity
An important factor for energy, activated carbon possesses huge specific surface area, shows good absorption property.Normal activated carbon water purifier exists
Under normal condition purifying water body for a period of time after, the certain micro-organisms (such as nitrobacteria) adsorbed on activated carbon surface can be by water
In ammonia be converted into nitrite, cause water nitrite concentration increase, secondary pollution is caused to water body.
Elemental silver inhibits bacteria and bactericidal effect, and therefore, the addition elemental silver of active carbon surface can be adsorbed
Peculiar smell, foreign odor and trace toxic harmful substance in water removal, while elemental silver can be eliminated on activated carbon surface or in duct
Secondary pollution caused by microbial reproduction during drinking water deep purification increases antibacterial and sterilizing ability.
Invention content
The object of the present invention is to provide a kind of preparation methods of active carbon loading silver, solve existing activated carbon specific surface area
It is small, absorption property, the problem of antibacterial and bactericidal property are poor, meanwhile, it is capable to micro- life during effectively eliminating drinking water deep purification
The secondary pollution that object breeding is brought.
The technical solution adopted in the present invention is a kind of preparation method of active carbon loading silver, specifically according to following steps reality
It applies：
Step 1 takes a certain amount of activated carbon to be put into experiment container, and adding in salpeter solution is totally submerged activated carbon, soaks
Solution is stirred continuously during bubble, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after 23~25h of immersion, is filtered and is taken out activated carbon, is cleaned with distilled water
3~5 times；
Step 3, the activated carbon freeze-day with constant temperature that will be cleaned in step 2 complete the pretreatment of activated carbon；
Step 4 adds in activated carbon pretreated in step 3 in a certain amount of silver nitrate solution, is sealed after stirring,
23~25h is impregnated, obtains mixed liquid B；
Step 5 adds in sodium borohydride solution into mixed liquid B, is sealed after stirring evenly, and treats that the reaction was complete, stands 1
After~2h, activated carbon is taken out in filtering, and is cleaned 3~5 times with distilled water, and active carbon loading silver is obtained after dry.
The features of the present invention also characterized in that
A concentration of 1.8mol/L~2.2mol/L of salpeter solution in step 1.
A concentration of 0.01mol/L~0.10mol/L of silver nitrate solution in step 4.
The drying temperature of activated carbon is 90~120 DEG C in step 3, and drying time is 10~15h.
A concentration of 0.15mol/L~0.25mol/L of sodium borohydride solution in step 5.
The drying temperature of activated carbon is 60~80 DEG C in step 5, and drying time is 6~8h.
Activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.017~0.170：0.0038~0.038.
The invention has the advantages that a kind of preparation method of active carbon loading silver of the present invention, in common active raw material of wood-charcoal
The elemental silver with strong sterilization and antibacterial ability is added in material, elemental silver, can be effectively in activated carbon surface or duct
Secondary pollution caused by microbial reproduction during elimination drinking water deep purification increases antibacterial and sterilizing ability, while energy
Enough increasing specific surface areas, increase absorption property.
Description of the drawings
Fig. 1 is that influence and normal activated carbon of the active carbon loading silver of the invention prepared to acetic acid solution COD value are molten to acetic acid
The comparison diagram of the influence of liquid COD value；
Fig. 2 is active carbon loading silver and pair of the normal activated carbon as antiseptic to Escherichia coli sterilizing rate prepared by the present invention
Than figure.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of preparation method of active carbon loading silver of the present invention, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the nitre of a concentration of 1.8mol/L~2.2mol/L
Acid solution is totally submerged activated carbon, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after 23~25h of immersion, is filtered and is taken out activated carbon, is cleaned with distilled water
3~5 times；
The activated carbon cleaned in step 2 is placed in 90~120 DEG C by step 3, at a temperature of 10~15h of freeze-day with constant temperature, i.e.,
Complete the pretreatment of activated carbon；
Step 4, that pretreated activated carbon in step 3 is added in a concentration of 0.01mol/L~0.10mol/L silver nitrates is molten
It in liquid, is sealed after stirring, impregnates 23~25h, obtain mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.15mol/L~0.25mol/L is added in into mixed liquid B, stirring are equal
It is sealed after even, treats that the reaction was complete, after standing 1~2h, activated carbon is taken out in filtering, and is cleaned 3~5 times with distilled water, 60
~80 DEG C of dry 6~8h are to get to active carbon loading silver.
Activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.017~0.170：0.0038~0.038.
Embodiment 1
A kind of preparation method of active carbon loading silver, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the salpeter solution of a concentration of 1.8mol/L and makes work
Property charcoal is totally submerged, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after 23h is impregnated, is filtered and is taken out activated carbon, is cleaned 3 times with distilled water；
Step 3, the activated carbon cleaned in step 2 is placed in 120 DEG C at a temperature of freeze-day with constant temperature 10h, that is, complete activity
The pretreatment of charcoal；
Step 4 adds in activated carbon pretreated in step 3 in a concentration of 0.01mol/L silver nitrate solutions, after stirring
It is sealed, impregnates 23h, obtain mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.15mol/L is added in into mixed liquid B are sealed after stirring evenly and are protected
It deposits, treats that the reaction was complete, after standing 1h, activated carbon is taken out in filtering, and is cleaned 3 times with distilled water, in 60 DEG C of dry 8h to get to load
Active carbon of silver.
Wherein, activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.017：0.0038.
Embodiment 2
A kind of preparation method of active carbon loading silver, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the salpeter solution of a concentration of 1.9mol/L and makes work
Property charcoal is totally submerged, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Above-mentioned mixed liquor is sealed by step 2, after 23.5h is impregnated, is filtered and is taken out activated carbon, clear with distilled water
It washes 3 times；
Step 3, by the activated carbon cleaned in step 2 at a temperature of being positioned over 110 DEG C freeze-day with constant temperature 11h, that is, complete
The pretreatment of activated carbon；
Step 4 adds in activated carbon pretreated in step 3 in a concentration of 0.04mol/L silver nitrate solutions, after stirring
It is sealed, impregnates 23.5h, obtain mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.18mol/L is added in into mixed liquid B are sealed after stirring evenly and are protected
Deposit, treat that the reaction was complete, after standing 1.2h, activated carbon is taken out in filtering, and is cleaned 4 times with distilled water, 65 DEG C of dry 7h to get to
Active carbon loading silver.
Wherein, activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.020：0.004.
Embodiment 3
A kind of preparation method of active carbon loading silver, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the salpeter solution of a concentration of 2.0mol/L and makes work
Property charcoal is totally submerged, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after impregnating for 24 hours, is filtered and is taken out activated carbon, cleaned 4 times with distilled water；
Step 3, the activated carbon cleaned in step 2 is placed in 105 DEG C at a temperature of freeze-day with constant temperature 12h, that is, complete activity
The pretreatment of charcoal；
Step 4 adds in activated carbon pretreated in step 3 in a concentration of 0.08mol/L silver nitrate solutions, after stirring
It is sealed, dipping for 24 hours, obtains mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.20mol/L is added in into mixed liquid B are sealed after stirring evenly and are protected
Deposit, treat that the reaction was complete, after standing 1.5h, activated carbon is taken out in filtering, and is cleaned 4 times with distilled water, 70 DEG C of dry 6.5h to get
To active carbon loading silver.
Wherein, activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.06：0.008.
Embodiment 4
A kind of preparation method of active carbon loading silver, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the salpeter solution of a concentration of 2.2mol/L and makes work
Property charcoal is totally submerged, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after 24.5h is impregnated, is filtered and is taken out activated carbon, 5 are cleaned with distilled water
It is secondary；
Step 3, the activated carbon cleaned in step 2 is placed in 100 DEG C at a temperature of freeze-day with constant temperature 14h, that is, complete activity
The pretreatment of charcoal；
Step 4 adds in activated carbon pretreated in step 3 in a concentration of 0.09mol/L silver nitrate solutions, after stirring
It is sealed, impregnates 25h, obtain mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.24mol/L is added in into mixed liquid B are sealed after stirring evenly and are protected
It deposits, treats that the reaction was complete, after standing 2h, activated carbon is taken out in filtering, and is cleaned 5 times with distilled water, in 75 DEG C of dry 6h to get to load
Active carbon of silver.
Activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.14：0.024.
Embodiment 5
A kind of preparation method of active carbon loading silver, is specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, adds in the salpeter solution of a concentration of 2.2mol/L and makes work
Property charcoal is totally submerged, and solution is stirred continuously in soaking process, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after impregnating for 24 hours, is filtered and is taken out activated carbon, cleaned 5 times with distilled water；
Step 3, the activated carbon cleaned in step 2 is placed in 90 DEG C at a temperature of freeze-day with constant temperature 15h, that is, complete activated carbon
Pretreatment；
Step 4 adds in activated carbon pretreated in step 3 in a concentration of 0.10mol/L silver nitrate solutions, after stirring
It is sealed, dipping for 24 hours, obtains mixed liquid B；
Step 5, the sodium borohydride solution that a concentration of 0.25mol/L is added in into mixed liquid B are sealed after stirring evenly and are protected
It deposits, treats that the reaction was complete, after standing 2h, activated carbon is taken out in filtering, and is cleaned 5 times with distilled water, in 80 DEG C of dry 6h to get to load
Active carbon of silver.
Activated carbon, silver nitrate, sodium borohydride mass ratio be 1：0.170：0.038.
The active carbon loading silver prepared in Example 1, under the same conditions, to the active carbon loading silver of the invention prepared to second
The influence of acid solution COD value is compared with influence of the normal activated carbon to acetic acid solution COD value；As can be known from Fig. 1, it is of the invention
Active carbon loading silver to the Adsorption effect of organic matter acetic acid better than normal activated carbon, and the active carbon loading silver of the present invention is being inhaled
During attached acetic acid solution, the COD value of solution is gradually reduced.
The active carbon loading silver prepared in Example 3, under the same conditions, to the active carbon loading silver for preparing of the present invention and general
Logical activated carbon is to have cultivated the result after 48h in figure as comparison of the antiseptic to Escherichia coli sterilizing rate.As can be known from Fig. 2,
Normal activated carbon well below active carbon loading silver, illustrates the antibiotic property of active carbon loading silver better than common the antibiotic rate of Escherichia coli
Activated carbon.
Claims (7)
1. a kind of preparation method of active carbon loading silver, which is characterized in that be specifically implemented according to the following steps：
Step 1 takes a certain amount of activated carbon to be put into experiment container, and adding in salpeter solution is totally submerged activated carbon, impregnates
Solution is stirred continuously in journey, obtains mixed liquor A；
Mixed liquor A is sealed by step 2, after 23~25h of immersion, is filtered and is taken out activated carbon, and 3~5 are cleaned with distilled water
It is secondary；
Step 3, the activated carbon freeze-day with constant temperature that will be cleaned in step 2 complete the pretreatment of activated carbon；
Step 4 adds in activated carbon pretreated in step 3 in a certain amount of silver nitrate solution, is sealed, impregnates after stirring
23~25h obtains mixed liquid B；
Step 5 adds in sodium borohydride solution into mixed liquid B, is sealed after stirring evenly, and treats that the reaction was complete, stands 1~2h
Afterwards, activated carbon is taken out in filtering, and is cleaned 3~5 times with distilled water, and active carbon loading silver is obtained after dry.
A kind of 2. preparation method of active carbon loading silver according to claim 1, which is characterized in that nitric acid in the step 1
A concentration of 1.8mol/L~2.2mol/L of solution.
A kind of 3. preparation method of active carbon loading silver according to claim 1, which is characterized in that nitric acid in the step 4
A concentration of 0.01mol/L~0.10mol/L of silver-colored solution.
4. the preparation method of a kind of active carbon loading silver according to claim 1, which is characterized in that active in the step 3
The drying temperature of charcoal is 90~120 DEG C, and drying time is 10~15h.
A kind of 5. preparation method of active carbon loading silver according to claim 1, which is characterized in that boron hydrogen in the step 5
Change a concentration of 0.15mol/L~0.25mol/L of sodium solution.
6. the preparation method of a kind of active carbon loading silver according to claim 1, which is characterized in that active in the step 5
The drying temperature of charcoal is 60~80 DEG C, and drying time is 6~8h.
7. the preparation method of a kind of active carbon loading silver according to claim 1, which is characterized in that the activated carbon and nitric acid
Silver-colored, sodium borohydride mass ratio is 1：0.017~0.170：0.0038~0.038.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569511A (en) * | 2018-12-13 | 2019-04-05 | 南通三友环保科技有限公司 | Acid washed activated Carbon fibe and active carbon loading silver fiber producing processes and filter/circle |
| CN111841496A (en) * | 2020-07-24 | 2020-10-30 | 泉州南京大学环保产业研究院 | Method for rapidly preparing silver-loaded activated carbon |
| CN114889230A (en) * | 2022-05-18 | 2022-08-12 | 安徽弋尚纺织科技有限公司 | Production method of waterproof moisture-permeable protective clothing fabric |
Citations (3)
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| CN111841496A (en) * | 2020-07-24 | 2020-10-30 | 泉州南京大学环保产业研究院 | Method for rapidly preparing silver-loaded activated carbon |
| CN114889230A (en) * | 2022-05-18 | 2022-08-12 | 安徽弋尚纺织科技有限公司 | Production method of waterproof moisture-permeable protective clothing fabric |
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Application publication date: 20180706 |