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Simultaneous nitrification and denitrification in a novel membrane bioelectrochemical reactor with low membrane fouling tendency.
Environ Sci Pollut Res Int. 2017 Feb; 24(6):5106-5117.ES

Abstract

Microbial fuel cells (MFCs) can use nitrate as a cathodic electron acceptor for electrochemical denitrification, yet there is little knowledge about how to apply them into current wastewater treatment process to achieve efficient nitrogen removal. In this study, two dual-chamber MFCs were integrated with an aerobic membrane bioreactor to construct a novel membrane bioelectrochemical reactor (MBER) for simultaneous nitrification and denitrification under specific aeration. The effects of chemical oxygen demand (COD) loading rate, COD/N ratio, hydraulic retention time (HRT), and external resistance on the system performance were investigated. High effluent quality was obtained in the MBER in terms of COD and ammonium. During the operation, denitrification simultaneously occurred with nitrification at the bio-cathode of the MBER, achieving a maximal nitrogen removal efficiency of 84.3 %. A maximum power density of 1.8 W/m3 and a current density of 8.5 A/m3 were achieved with a coulombic efficiency of 12.1 %. Furthermore, compared to the control system, the MBER exhibited lower membrane fouling tendency due to mixed liquor volatile suspended solids (MLVSSs) and extracellular polymeric substance (EPS) reductions, EPSp/EPSc ratio decrease, and particle size increase of the sludge. These results suggest that the MBER holds potential for efficient nitrogen removal, electricity production, and membrane fouling mitigation.

Authors+Show Affiliations

School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin, 150090, China.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China. hittianyu@163.com. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin, 150090, China. hittianyu@163.com.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin, 150090, China.Research Center for Eco-Environmental Science in Shanxi, Taiyuan, 030009, China.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China.School of Food Engineering, Harbin University of Commerce, Harbin, 150076, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26856866

Citation

Li, Hui, et al. "Simultaneous Nitrification and Denitrification in a Novel Membrane Bioelectrochemical Reactor With Low Membrane Fouling Tendency." Environmental Science and Pollution Research International, vol. 24, no. 6, 2017, pp. 5106-5117.
Li H, Zuo W, Tian Y, et al. Simultaneous nitrification and denitrification in a novel membrane bioelectrochemical reactor with low membrane fouling tendency. Environ Sci Pollut Res Int. 2017;24(6):5106-5117.
Li, H., Zuo, W., Tian, Y., Zhang, J., Di, S., Li, L., & Su, X. (2017). Simultaneous nitrification and denitrification in a novel membrane bioelectrochemical reactor with low membrane fouling tendency. Environmental Science and Pollution Research International, 24(6), 5106-5117. https://doi.org/10.1007/s11356-016-6084-8
Li H, et al. Simultaneous Nitrification and Denitrification in a Novel Membrane Bioelectrochemical Reactor With Low Membrane Fouling Tendency. Environ Sci Pollut Res Int. 2017;24(6):5106-5117. PubMed PMID: 26856866.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous nitrification and denitrification in a novel membrane bioelectrochemical reactor with low membrane fouling tendency. AU - Li,Hui, AU - Zuo,Wei, AU - Tian,Yu, AU - Zhang,Jun, AU - Di,Shijing, AU - Li,Lipin, AU - Su,Xinying, Y1 - 2016/02/09/ PY - 2015/09/12/received PY - 2016/01/08/accepted PY - 2016/2/10/pubmed PY - 2017/8/8/medline PY - 2016/2/10/entrez KW - Denitrification KW - Energy recovery KW - Membrane bioreactor KW - Membrane fouling KW - Microbial fuel cell KW - Nitrification SP - 5106 EP - 5117 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 24 IS - 6 N2 - Microbial fuel cells (MFCs) can use nitrate as a cathodic electron acceptor for electrochemical denitrification, yet there is little knowledge about how to apply them into current wastewater treatment process to achieve efficient nitrogen removal. In this study, two dual-chamber MFCs were integrated with an aerobic membrane bioreactor to construct a novel membrane bioelectrochemical reactor (MBER) for simultaneous nitrification and denitrification under specific aeration. The effects of chemical oxygen demand (COD) loading rate, COD/N ratio, hydraulic retention time (HRT), and external resistance on the system performance were investigated. High effluent quality was obtained in the MBER in terms of COD and ammonium. During the operation, denitrification simultaneously occurred with nitrification at the bio-cathode of the MBER, achieving a maximal nitrogen removal efficiency of 84.3 %. A maximum power density of 1.8 W/m3 and a current density of 8.5 A/m3 were achieved with a coulombic efficiency of 12.1 %. Furthermore, compared to the control system, the MBER exhibited lower membrane fouling tendency due to mixed liquor volatile suspended solids (MLVSSs) and extracellular polymeric substance (EPS) reductions, EPSp/EPSc ratio decrease, and particle size increase of the sludge. These results suggest that the MBER holds potential for efficient nitrogen removal, electricity production, and membrane fouling mitigation. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/26856866/Simultaneous_nitrification_and_denitrification_in_a_novel_membrane_bioelectrochemical_reactor_with_low_membrane_fouling_tendency_ L2 - https://dx.doi.org/10.1007/s11356-016-6084-8 DB - PRIME DP - Unbound Medicine ER -