期刊
JOURNAL OF WATER PROCESS ENGINEERING
卷 39, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jwpe.2020.101890
关键词
Monod model; Microbial oxidation; Arsenite; Antimonite; Activated sludges
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2020R1I1A3068585]
- Ministry of Science, ICT and Future Planning (MSIP) [NRF2018 R1 D1A1 B 06050850]
- National Research Council of Science & Technology (NST), Republic of Korea [C140320] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study isolated two bacterial strains belonging to the genus Shinella from the activated sludge of a domestic wastewater treatment plant, which could autotrophically oxidize As(III) to As(V) and Sb(III) to Sb(V) under aerobic conditions. The strains exhibited versatile growth capabilities under different conditions and possessed the arsenite oxidase (aioA) gene, indicating their potential applications for bioremediation of arsenic and antimony.
Two bacterial strains belonging to the genus Shinella were isolated from the activated sludge of a domestic wastewater treatment plant and could autotrophically oxidize As(III) to As(V) under aerobic conditions. Kinetic studies indicated that the autotrophic As(III) oxidation rate of both strains matched the Monod model well, and strain VKA3 exhibited higher kinetic parameters compared to strain VKA4 (mu(max) = 124.16 mu M/h and K-s = 4407.19 mu M vs. mu(max) = 59.00 mu M/h and K-s = 1787.03 mu M). The versatility of both strains was expressed through their flexible growth under heterotrophic conditions in the presence of yeast extract and anaerobic As(III) coupled with denitrification. Both strains can oxidize Sb(III) to Sb(V) under aerobic conditions. The arsenite oxidase (aioA) gene, which might be involved in As(III) and Sb(III) oxidation, was detected in the isolated strains. This study demonstrated that the versatile bacteria with potential applications for bioremediation of As and Sb could be obtained from an easily accessible microbiological source.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据