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Microbial fuel cell assisted nitrate nitrogen removal using cow manure and soil.
Environ Sci Pollut Res Int. 2016 Apr; 23(8):7744-56.ES

Abstract

Microbial fuel cells (MFCs) are emerging wastewater treatment systems with a proven potential for denitrification. In this study, we have developed a high-rate denitrifying MFC. The anode consisted of cow manure and fruit waste and the cathode consisted of cow manure and soil. The initial chemical oxygen demand (COD)/nitrate nitrogen (NO3 (-)-N) was varied from 2 to 40 at the cathode while keeping the anode ratio fixed at 100. NO3 (-)-N removal rate of 7.1 ± 0.9 kg NO3 (-)-N/m(3) net cathodic compartment (NCC)/day was achieved at cathode COD/NO3 (-)-N ratio 7.31 with the current density of 190 ± 9.1 mA/m(2) and power density of 31.92 ± 4 mW/m(2) of electrode surface area. We achieved an open-circuit voltage (OCV) of 410 ± 20 mV at initial cathodic NO3 (-)-N of 0.345 g/l. The cathode COD/NO3 (-)-N ratio had a significant influence on MFC's OCV and nitrate removal rate. Lower OCV (<150 mV) and NO3 (-)-N removal rates were observed at COD/NO3 (-)-N ratio >12 and <7. Experiments done at different cathode pH values indicated that the optimum pH for denitrification was 7. Under optimized biochemical conditions, nitrate removal rate of 6.5 kg NO3 (-)-N/m(3) net cathodic compartment (NCC)/day and power density of 210 mW/m(2) were achieved in a low resistance MFC. The present study thus demonstrates the utility of MFCs for the treatment of high nitrate wastes.

Authors+Show Affiliations

Department of Biology, Indian Institute of Technology-Jodhpur, Rajasthan, 342011, India.Department of Biology, Indian Institute of Technology-Jodhpur, Rajasthan, 342011, India.Department of Biology, Indian Institute of Technology-Jodhpur, Rajasthan, 342011, India. meenuchhabra@iitj.ac.in.

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

26755171

Citation

Vijay, Ankisha, et al. "Microbial Fuel Cell Assisted Nitrate Nitrogen Removal Using Cow Manure and Soil." Environmental Science and Pollution Research International, vol. 23, no. 8, 2016, pp. 7744-56.
Vijay A, Vaishnava M, Chhabra M. Microbial fuel cell assisted nitrate nitrogen removal using cow manure and soil. Environ Sci Pollut Res Int. 2016;23(8):7744-56.
Vijay, A., Vaishnava, M., & Chhabra, M. (2016). Microbial fuel cell assisted nitrate nitrogen removal using cow manure and soil. Environmental Science and Pollution Research International, 23(8), 7744-56. https://doi.org/10.1007/s11356-015-5934-0
Vijay A, Vaishnava M, Chhabra M. Microbial Fuel Cell Assisted Nitrate Nitrogen Removal Using Cow Manure and Soil. Environ Sci Pollut Res Int. 2016;23(8):7744-56. PubMed PMID: 26755171.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Microbial fuel cell assisted nitrate nitrogen removal using cow manure and soil. AU - Vijay,Ankisha, AU - Vaishnava,Monika, AU - Chhabra,Meenu, Y1 - 2016/01/12/ PY - 2015/04/15/received PY - 2015/12/07/accepted PY - 2016/1/13/entrez PY - 2016/1/13/pubmed PY - 2017/3/30/medline KW - Biocathode KW - Cow manure KW - Heterotrophic denitrification KW - Microbial fuel cell KW - Soil KW - Wastewater treatment SP - 7744 EP - 56 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 8 N2 - Microbial fuel cells (MFCs) are emerging wastewater treatment systems with a proven potential for denitrification. In this study, we have developed a high-rate denitrifying MFC. The anode consisted of cow manure and fruit waste and the cathode consisted of cow manure and soil. The initial chemical oxygen demand (COD)/nitrate nitrogen (NO3 (-)-N) was varied from 2 to 40 at the cathode while keeping the anode ratio fixed at 100. NO3 (-)-N removal rate of 7.1 ± 0.9 kg NO3 (-)-N/m(3) net cathodic compartment (NCC)/day was achieved at cathode COD/NO3 (-)-N ratio 7.31 with the current density of 190 ± 9.1 mA/m(2) and power density of 31.92 ± 4 mW/m(2) of electrode surface area. We achieved an open-circuit voltage (OCV) of 410 ± 20 mV at initial cathodic NO3 (-)-N of 0.345 g/l. The cathode COD/NO3 (-)-N ratio had a significant influence on MFC's OCV and nitrate removal rate. Lower OCV (<150 mV) and NO3 (-)-N removal rates were observed at COD/NO3 (-)-N ratio >12 and <7. Experiments done at different cathode pH values indicated that the optimum pH for denitrification was 7. Under optimized biochemical conditions, nitrate removal rate of 6.5 kg NO3 (-)-N/m(3) net cathodic compartment (NCC)/day and power density of 210 mW/m(2) were achieved in a low resistance MFC. The present study thus demonstrates the utility of MFCs for the treatment of high nitrate wastes. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26755171/Microbial_fuel_cell_assisted_nitrate_nitrogen_removal_using_cow_manure_and_soil_ L2 - https://dx.doi.org/10.1007/s11356-015-5934-0 DB - PRIME DP - Unbound Medicine ER -