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Enhanced decolorization of methyl orange by Bacillus sp. strain with magnetic humic acid nanoparticles under high salt conditions.
Bioresour Technol 2019; 288:121535BT

Abstract

In this study, magnetic humic acid (MHA) nanoparticle was prepared and confirmed the enhancement on reduction of azo dyes under high salt concentration. The anaerobic growth of the strain Bacillus sp. on quinones makes the biogenic hydroquinone feasible, and the latter was proven to reduce the azo dyes stoichiometrically. This in-situ reversibly oxidation and reduction of MHA acts as electron shuttle to catalyze the biotic reduction of the azo dyes. The biodegradation efficiencies in batch experiments and sequencing batch reactor with MHA were increased by 1.5-2.5 times as compared to that of control without the catalyzer. Moreover, the negligible leaching of HA under various environmental conditions suggests the robustness of the coating of HA on Fe/O surface. These results indicated that the as-prepared MHA could be used as redox mediator to accelerate the extracellular electron transfer, which is of great environmental significance for the removal of hazardous compounds.

Authors+Show Affiliations

Department of Environmental Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China. Electronic address: lyu@njfu.edu.cn.Department of Environmental Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.Department of Environmental Engineering, Nanjing Forestry University, Nanjing 210037, China.Department of Environmental Engineering, Nanjing Forestry University, Nanjing 210037, China.Department of Environmental Engineering, Nanjing Forestry University, Nanjing 210037, China.Institute of Engineering, Architecture & Information Technology, The University of Queensland, Brisbane, QLD 4072, Australia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31152957

Citation

Yu, Lei, et al. "Enhanced Decolorization of Methyl Orange By Bacillus Sp. Strain With Magnetic Humic Acid Nanoparticles Under High Salt Conditions." Bioresource Technology, vol. 288, 2019, p. 121535.
Yu L, Wang PT, Xu QT, et al. Enhanced decolorization of methyl orange by Bacillus sp. strain with magnetic humic acid nanoparticles under high salt conditions. Bioresour Technol. 2019;288:121535.
Yu, L., Wang, P. T., Xu, Q. T., He, T., Oduro, G., & Lu, Y. (2019). Enhanced decolorization of methyl orange by Bacillus sp. strain with magnetic humic acid nanoparticles under high salt conditions. Bioresource Technology, 288, p. 121535. doi:10.1016/j.biortech.2019.121535.
Yu L, et al. Enhanced Decolorization of Methyl Orange By Bacillus Sp. Strain With Magnetic Humic Acid Nanoparticles Under High Salt Conditions. Bioresour Technol. 2019;288:121535. PubMed PMID: 31152957.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enhanced decolorization of methyl orange by Bacillus sp. strain with magnetic humic acid nanoparticles under high salt conditions. AU - Yu,Lei, AU - Wang,Peng-Tao, AU - Xu,Qing-Tao, AU - He,Tao, AU - Oduro,George, AU - Lu,Yan, Y1 - 2019/05/22/ PY - 2019/04/24/received PY - 2019/05/18/revised PY - 2019/05/20/accepted PY - 2019/6/4/pubmed PY - 2019/9/19/medline PY - 2019/6/2/entrez KW - Extracellular electron transfer KW - High salt concentration KW - Humic acids KW - Magnetic nanoparticles KW - Redox mediator SP - 121535 EP - 121535 JF - Bioresource technology JO - Bioresour. Technol. VL - 288 N2 - In this study, magnetic humic acid (MHA) nanoparticle was prepared and confirmed the enhancement on reduction of azo dyes under high salt concentration. The anaerobic growth of the strain Bacillus sp. on quinones makes the biogenic hydroquinone feasible, and the latter was proven to reduce the azo dyes stoichiometrically. This in-situ reversibly oxidation and reduction of MHA acts as electron shuttle to catalyze the biotic reduction of the azo dyes. The biodegradation efficiencies in batch experiments and sequencing batch reactor with MHA were increased by 1.5-2.5 times as compared to that of control without the catalyzer. Moreover, the negligible leaching of HA under various environmental conditions suggests the robustness of the coating of HA on Fe/O surface. These results indicated that the as-prepared MHA could be used as redox mediator to accelerate the extracellular electron transfer, which is of great environmental significance for the removal of hazardous compounds. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/31152957/Enhanced_decolorization_of_methyl_orange_by_Bacillus_sp._strain_with_magnetic_humic_acid_nanoparticles_under_high_salt_conditions L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(19)30765-5 DB - PRIME DP - Unbound Medicine ER -