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Biological catalyzed denitrification by a functional electropolymerization biocarrier modified by redox mediator.
Bioresour Technol. 2012 Mar; 107:144-50.BT

Abstract

Electropolymerization biocarriers were prepared by the electropolymerization of polypyrrole (PPy) on an active carbon felt (ACF) electrode using doping anions anthraquinone-2-sulfonate (AQS) or Na(2)SO(4). The functional electropolymerization biocarrier (ACF/PPy/AQS) with AQS was used as an immobilized redox mediator for the denitrification process. The characteristics of the electropolymerization biocarriers were analyzed by scanning electron microscope, elemental analyses, Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The results suggested that the denitrification efficiency increased nearly 1.5-fold with ACF/PPy/AQS (0.04 mmol L(-1) AQS) compared to the control. A linear correlation was found for the k value and the AQS concentration (C(AQS)), which was k=624.71C(AQS)+83.87 (R(2)=0.9893). The ORP value stabilized around -200 mV for the denitrification process with ACF/PPy/AQS, which was -25 mV lower than that with ACF/PPy/Na(2)SO(4). Repeated-batch operations indicated that the denitrification efficiency with ACF/PPy/AQS maintained over 90% of the original value and exhibited better catalytic activity and durability.

Authors+Show Affiliations

State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

22257858

Citation

Liu, Huijuan, et al. "Biological Catalyzed Denitrification By a Functional Electropolymerization Biocarrier Modified By Redox Mediator." Bioresource Technology, vol. 107, 2012, pp. 144-50.
Liu H, Guo J, Qu J, et al. Biological catalyzed denitrification by a functional electropolymerization biocarrier modified by redox mediator. Bioresour Technol. 2012;107:144-50.
Liu, H., Guo, J., Qu, J., Lian, J., Guo, Y., Jefferson, W., & Yang, J. (2012). Biological catalyzed denitrification by a functional electropolymerization biocarrier modified by redox mediator. Bioresource Technology, 107, 144-50. https://doi.org/10.1016/j.biortech.2011.12.071
Liu H, et al. Biological Catalyzed Denitrification By a Functional Electropolymerization Biocarrier Modified By Redox Mediator. Bioresour Technol. 2012;107:144-50. PubMed PMID: 22257858.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biological catalyzed denitrification by a functional electropolymerization biocarrier modified by redox mediator. AU - Liu,Huijuan, AU - Guo,Jianbo, AU - Qu,Jiuhui, AU - Lian,Jing, AU - Guo,Yankai, AU - Jefferson,William, AU - Yang,Jingliang, Y1 - 2011/12/22/ PY - 2011/10/11/received PY - 2011/12/12/revised PY - 2011/12/13/accepted PY - 2012/1/20/entrez PY - 2012/1/20/pubmed PY - 2012/5/30/medline SP - 144 EP - 50 JF - Bioresource technology JO - Bioresour. Technol. VL - 107 N2 - Electropolymerization biocarriers were prepared by the electropolymerization of polypyrrole (PPy) on an active carbon felt (ACF) electrode using doping anions anthraquinone-2-sulfonate (AQS) or Na(2)SO(4). The functional electropolymerization biocarrier (ACF/PPy/AQS) with AQS was used as an immobilized redox mediator for the denitrification process. The characteristics of the electropolymerization biocarriers were analyzed by scanning electron microscope, elemental analyses, Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The results suggested that the denitrification efficiency increased nearly 1.5-fold with ACF/PPy/AQS (0.04 mmol L(-1) AQS) compared to the control. A linear correlation was found for the k value and the AQS concentration (C(AQS)), which was k=624.71C(AQS)+83.87 (R(2)=0.9893). The ORP value stabilized around -200 mV for the denitrification process with ACF/PPy/AQS, which was -25 mV lower than that with ACF/PPy/Na(2)SO(4). Repeated-batch operations indicated that the denitrification efficiency with ACF/PPy/AQS maintained over 90% of the original value and exhibited better catalytic activity and durability. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/22257858/Biological_catalyzed_denitrification_by_a_functional_electropolymerization_biocarrier_modified_by_redox_mediator_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(11)01817-7 DB - PRIME DP - Unbound Medicine ER -