Bioreduction of Antimonate by Anaerobic Methane Oxidation in a Membrane Biofilm Batch Reactor

Environmental Science & Technology
Chun-Yu LaiHe-Ping Zhao

Abstract

Employing a special anaerobic membrane biofilm batch reactor (MBBR), we demonstrated antimonate (Sb(V)) reduction using methane (CH4) as the sole electron donor. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman and photoluminescence (PL) spectra identified that Sb2O3 microcrystals were the main reduced products. The Sb(V) reduction rate increased continually over the 111-day experiment, which supports the enrichment of the microorganisms responsible for Sb(V) reduction to Sb(III). Copy numbers of the mcrA gene and archaeal and bacterial 16 S rRNA genes increased in parallel. Clone library and Illumina sequencing of 16S rRNA gene demonstrated that Methanosarcina became the dominant archaea in the biofilm, suggesting that Methanosarcina might play an important role in Sb(V) reduction in the CH4-based MBBR.

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Citations

Aug 8, 2018·Journal of Bacteriology·Derek R Lovley
Sep 11, 2019·Applied Microbiology and Biotechnology·Ling-Dong ShiHe-Ping Zhao
Jul 10, 2019·Environmental Science and Pollution Research International·Qiu-Yi DongHe-Ping Zhao
Sep 12, 2020·Biodegradation·Zi-Yan LiHe-Ping Zhao
Jul 1, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Sara ArabiValetta Saldanha
Nov 18, 2020·Environmental Science and Pollution Research International·Qiu-Yi DongHe-Ping Zhao
Dec 15, 2020·Chemosphere·Ziran YangMichihiko Ike
May 23, 2020·The Science of the Total Environment·Ling-Dong ShiHe-Ping Zhao
Dec 4, 2020·Journal of Hazardous Materials·Cheng-Cheng DangNan-Qi Ren
Jan 13, 2021·Environmental Science & Technology·Chun-Yu LaiJianhua Guo
Feb 7, 2021·Biotechnology Advances·Tatyana S Tikhomirova, Sergey Y But
Mar 9, 2021·Heliyon·Clayton R JohnsonEdward J O'Loughlin
Apr 6, 2021·Water Research·Ling-Dong ShiHe-Ping Zhao
Jun 14, 2021·The Science of the Total Environment·Yarong SongGuangming Jiang

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