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Ochrobactrum anthropi used to control ammonium for nitrate removal by starch-stabilized nanoscale zero valent iron.
Water Sci Technol 2017; 76(7-8):1827-1832WS

Abstract

In this study, the hydrogenotrophic denitrifying bacterium Ochrobactrum anthropi was added in to the process of nitrate removal by starch-stabilized nanoscale zero valent iron (nZVI) to minimize undesirable ammonium. The ammonium control performance and cooperative mechanism of this combined process were investigated, and batch experiments were conducted to discuss the effects of starch-stabilized nZVI dose, biomass, and pH on nitrate reduction and ammonium control of this system. The combined system achieved satisfactory performance because the anaerobic iron corrosion process generates H2, which is used as an electron donor for the autohydrogenotrophic bacterium Ochrobactrum anthropi to achieve the autohydrogenotrophic denitrification process converting nitrate to N2. When starch-stabilized nZVI dose was increased from 0.5 to 2.0 g/L, nitrate reduction rate gradually increased, and ammonium yield also increased from 9.40 to 60.51 mg/L. Nitrate removal rate gradually decreased and ammonium yield decreased from 14.93 to 2.61 mg/L with initial OD600 increasing from 0.015 to 0.080. The abiotic Fe0 reduction process played a key role in nitrate removal in an acidic environment and generated large amounts of ammonium. Meanwhile, the nitrate removal rate decreased and ammonium yield also reduced in an alkaline environment.

Authors+Show Affiliations

College of Urban Construction, Nanjing Tech University, Nanjing 211800, China E-mail: zhoujun0913@126.com.College of Urban Construction, Nanjing Tech University, Nanjing 211800, China E-mail: zhoujun0913@126.com.School of Civil Engineering, Wuhan University, Wuhan 430072, China.School of Civil Engineering, Wuhan University, Wuhan 430072, China.School of Civil Engineering, Wuhan University, Wuhan 430072, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28991797

Citation

Zhou, Jun, et al. "Ochrobactrum Anthropi Used to Control Ammonium for Nitrate Removal By Starch-stabilized Nanoscale Zero Valent Iron." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 76, no. 7-8, 2017, pp. 1827-1832.
Zhou J, Sun Q, Chen D, et al. Ochrobactrum anthropi used to control ammonium for nitrate removal by starch-stabilized nanoscale zero valent iron. Water Sci Technol. 2017;76(7-8):1827-1832.
Zhou, J., Sun, Q., Chen, D., Wang, H., & Yang, K. (2017). Ochrobactrum anthropi used to control ammonium for nitrate removal by starch-stabilized nanoscale zero valent iron. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 76(7-8), pp. 1827-1832. doi:10.2166/wst.2017.286.
Zhou J, et al. Ochrobactrum Anthropi Used to Control Ammonium for Nitrate Removal By Starch-stabilized Nanoscale Zero Valent Iron. Water Sci Technol. 2017;76(7-8):1827-1832. PubMed PMID: 28991797.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ochrobactrum anthropi used to control ammonium for nitrate removal by starch-stabilized nanoscale zero valent iron. AU - Zhou,Jun, AU - Sun,Qianyu, AU - Chen,Dan, AU - Wang,Hongyu, AU - Yang,Kai, PY - 2017/10/10/entrez PY - 2017/10/11/pubmed PY - 2018/1/9/medline SP - 1827 EP - 1832 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci. Technol. VL - 76 IS - 7-8 N2 - In this study, the hydrogenotrophic denitrifying bacterium Ochrobactrum anthropi was added in to the process of nitrate removal by starch-stabilized nanoscale zero valent iron (nZVI) to minimize undesirable ammonium. The ammonium control performance and cooperative mechanism of this combined process were investigated, and batch experiments were conducted to discuss the effects of starch-stabilized nZVI dose, biomass, and pH on nitrate reduction and ammonium control of this system. The combined system achieved satisfactory performance because the anaerobic iron corrosion process generates H2, which is used as an electron donor for the autohydrogenotrophic bacterium Ochrobactrum anthropi to achieve the autohydrogenotrophic denitrification process converting nitrate to N2. When starch-stabilized nZVI dose was increased from 0.5 to 2.0 g/L, nitrate reduction rate gradually increased, and ammonium yield also increased from 9.40 to 60.51 mg/L. Nitrate removal rate gradually decreased and ammonium yield decreased from 14.93 to 2.61 mg/L with initial OD600 increasing from 0.015 to 0.080. The abiotic Fe0 reduction process played a key role in nitrate removal in an acidic environment and generated large amounts of ammonium. Meanwhile, the nitrate removal rate decreased and ammonium yield also reduced in an alkaline environment. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/28991797/Ochrobactrum_anthropi_used_to_control_ammonium_for_nitrate_removal_by_starch_stabilized_nanoscale_zero_valent_iron_ L2 - https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2017.286 DB - PRIME DP - Unbound Medicine ER -