Tags

Type your tag names separated by a space and hit enter

Nitrate as an oxidant in the cathode chamber of a microbial fuel cell for both power generation and nutrient removal purposes.
Appl Biochem Biotechnol. 2011 Jun; 164(4):464-74.AB

Abstract

Nitrate ions were used as the oxidant in the cathode chamber of a microbial fuel cell (MFC) to generate electricity from organic compounds with simultaneous nitrate removal. The MFC using nitrate as oxidant could generate a voltage of 111 mV (1,000 Ω) with a plain carbon cathode. The maximum power density achieved was 7.2 mW m(-2) with a 470 Ω resistor. Nitrate was reduced from an initial concentration of 49 to 25 mg (NO (3) (-) -N) L(-1) during 42-day operation. The daily removal rate was 0.57 mg (NO (3) (-) -N) L(-1) day(-1) with a voltage generation of 96 mV. In the presence of Pt catalyst dispersed on cathode, the cell voltage was significantly increased up to 450 mV and the power density was 117.7 mW m(-2), which was 16 times higher than the value without Pt catalyst. Significant nitrate removal was also observed with a daily removal rate of 2 mg (NO (3) (-) -N) L(-1) day(-1), which was 3.5 times higher compared with the operation without catalyst. Nitrate was reduced to nitrite and ammonia in the liquid phase at a ratio of 0.6% and 51.8% of the total nitrate amount. These results suggest that nitrate can be successfully used as an oxidant for power generation without aeration and also nitrate removal from water in MFC. However, control of the process would be needed to reduce nitrate to only nitrogen gas, and avoid further reduction to ammonia.

Authors+Show Affiliations

Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21188547

Citation

Fang, Cheng, et al. "Nitrate as an Oxidant in the Cathode Chamber of a Microbial Fuel Cell for Both Power Generation and Nutrient Removal Purposes." Applied Biochemistry and Biotechnology, vol. 164, no. 4, 2011, pp. 464-74.
Fang C, Min B, Angelidaki I. Nitrate as an oxidant in the cathode chamber of a microbial fuel cell for both power generation and nutrient removal purposes. Appl Biochem Biotechnol. 2011;164(4):464-74.
Fang, C., Min, B., & Angelidaki, I. (2011). Nitrate as an oxidant in the cathode chamber of a microbial fuel cell for both power generation and nutrient removal purposes. Applied Biochemistry and Biotechnology, 164(4), 464-74. https://doi.org/10.1007/s12010-010-9148-0
Fang C, Min B, Angelidaki I. Nitrate as an Oxidant in the Cathode Chamber of a Microbial Fuel Cell for Both Power Generation and Nutrient Removal Purposes. Appl Biochem Biotechnol. 2011;164(4):464-74. PubMed PMID: 21188547.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nitrate as an oxidant in the cathode chamber of a microbial fuel cell for both power generation and nutrient removal purposes. AU - Fang,Cheng, AU - Min,Booki, AU - Angelidaki,Irini, Y1 - 2010/12/29/ PY - 2010/07/29/received PY - 2010/12/07/accepted PY - 2010/12/29/entrez PY - 2010/12/29/pubmed PY - 2011/8/23/medline SP - 464 EP - 74 JF - Applied biochemistry and biotechnology JO - Appl Biochem Biotechnol VL - 164 IS - 4 N2 - Nitrate ions were used as the oxidant in the cathode chamber of a microbial fuel cell (MFC) to generate electricity from organic compounds with simultaneous nitrate removal. The MFC using nitrate as oxidant could generate a voltage of 111 mV (1,000 Ω) with a plain carbon cathode. The maximum power density achieved was 7.2 mW m(-2) with a 470 Ω resistor. Nitrate was reduced from an initial concentration of 49 to 25 mg (NO (3) (-) -N) L(-1) during 42-day operation. The daily removal rate was 0.57 mg (NO (3) (-) -N) L(-1) day(-1) with a voltage generation of 96 mV. In the presence of Pt catalyst dispersed on cathode, the cell voltage was significantly increased up to 450 mV and the power density was 117.7 mW m(-2), which was 16 times higher than the value without Pt catalyst. Significant nitrate removal was also observed with a daily removal rate of 2 mg (NO (3) (-) -N) L(-1) day(-1), which was 3.5 times higher compared with the operation without catalyst. Nitrate was reduced to nitrite and ammonia in the liquid phase at a ratio of 0.6% and 51.8% of the total nitrate amount. These results suggest that nitrate can be successfully used as an oxidant for power generation without aeration and also nitrate removal from water in MFC. However, control of the process would be needed to reduce nitrate to only nitrogen gas, and avoid further reduction to ammonia. SN - 1559-0291 UR - https://www.unboundmedicine.com/medline/citation/21188547/Nitrate_as_an_oxidant_in_the_cathode_chamber_of_a_microbial_fuel_cell_for_both_power_generation_and_nutrient_removal_purposes_ L2 - https://dx.doi.org/10.1007/s12010-010-9148-0 DB - PRIME DP - Unbound Medicine ER -