[go: up one dir, main page]
More Web Proxy on the site http://driver.im/ Skip to main content

Advertisement

Log in

Improved power density and Cr/Pb removal using ozone in a microbial desalination cell

  • Original Paper
  • Published:
Environmental Chemistry Letters Aims and scope Submit manuscript

Abstract

Microbial desalination cells are promising bio-electrochemical technologies for water desalination, treating wastewater and bioelectricity production. In this study, the capability of microbial desalination cell was investigated to remove chromium (Cr(VI)) and lead (Pb(II)), from industrial wastewaters. In addition, we tested the use of ozone as a new electron acceptor in microbial desalination cells to improve the removal efficiency and for bioelectricity generation. Findings were compared with those of another microbial desalination cell operated independently with oxygen: an O2-microbial desalination cell. Results show that, to remove Cr using ozone, the maximum power density was 812 mW cm−2 and the removal efficiency was 99.2%. By comparison, for Cr when oxygen was used, the maximum power density and removal efficiency were lower, 354 mW cm−2, and 91.8%, respectively. For Pb using ozone, the maximum power density was 568 mW cm−2 and the removal efficiency was 98.4%. By comparison, for Pb using oxygen, the maximum power density was lower, of 232 mW cm−2, and the removal efficiency was also lower, of 88.5%. More stable current profiles were observed using ozone. Scanning electron microscopy images indicate that the whole surface of the anode is occupied by a complex dense biofilm. Overall, our findings show that modifying the bio-electrochemical processes with ozone promotes the reactor efficacy in terms of power generation and wastewater treatment.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
£29.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price includes VAT (United Kingdom)

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

Explore related subjects

Discover the latest articles, news and stories from top researchers in related subjects.

References

Download references

Acknowledgements

This study was financially supported by Grant No: 951205 of the Biotechnology Development Council of the Islamic Republic of Iran and by Shahid Sadoughi University of Medical Sciences (Grant No: 12532).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Mohammad Hassan Ehrampoush.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gholizadeh, A., Salmani, M.H., Ebrahimi, A.A. et al. Improved power density and Cr/Pb removal using ozone in a microbial desalination cell. Environ Chem Lett 16, 1477–1485 (2018). https://doi.org/10.1007/s10311-018-0760-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10311-018-0760-5

Keywords