Advances in elemental sulfur-driven bioprocesses for wastewater treatment: From metabolic study to application

被引:78
作者
Guo, Gang [1 ]
Li, Zhaoling [1 ]
Chen, Lei [1 ]
Ling, Qingshan [1 ]
Zan, Feixiang [1 ]
Isawi, Heba [2 ]
Hao, Tianwei [3 ]
Ma, Jie [1 ]
Wang, Zongping [1 ]
Chen, Guanghao [4 ]
Lu, Hui [5 ]
机构
[1] Huazhong Univ Sci & Technol HUST, MOHURD, Key Lab Water & Wastewater Treatment HUST, Sch Environm Sci & Engn, Wuhan 430074, Peoples R China
[2] Egyptian Desalinat Res Ctr Excellence EDRC, Desert Res Ctr, Water Resources & Desert Soils Div, Cairo, Egypt
[3] Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Macau, Peoples R China
[4] Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Peoples R China
[5] Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou, Peoples R China
基金
中国国家自然科学基金;
关键词
Elemental sulfur; Sulfur-driven autotrophic denitrification; Sulfur-reducing organics removal; Biological wastewater treatment; AUTOTROPHIC DENITRIFICATION PROCESS; SULFIDE REMOVAL PROCESS; SP NOV; PYROCOCCUS-FURIOSUS; GEN; NOV; REDUCTION; NITRATE; BACTERIA; SYSTEM; KINETICS;
D O I
10.1016/j.watres.2022.118143
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Elemental sulfur (S-0) is known to be an abundant, non-toxic material with a wide range of redox states (-2 to +6) and may serve as an excellent electron carrier in wastewater treatment. In turn, S-0-driven bioprocesses, which employ S-0 as electron donor or acceptor, have recently established themselves as cost-effective therefore attractive solutions for wastewater treatment. Numerous related processes have, to date, been developed from laboratory experiments into full-scale applications, including S-0-driven autotrophic denitrification for nitrate removal and S-0-reducing organic removal. Compared to the conventional activated sludge process, these bioprocesses require only a small amount of organic matter and produce very little sludge. There have been great efforts to characterize chemical and biogenic S-0 and related functional microorganisms in order to identify the biochemical pathways, upgrade the bioprocesses, and assess the impact of the operating factors on process performance, ultimately aiming to better understand and to optimize the processes. This paper is therefore a comprehensive overview of emerging S-0-driven biotechnologies, including the development of S-0-driven autotrophic denitrification and S-0-based sulfidogenesis, as well as the associated microbiology and biochemistry. Also reviewed here are the physicochemical characteristics of S-0 and the effects that environmental factors such as pH, influent sulfur/nitrate ratio, temperature, S-0 particle size and reactor configurations have on the process. Research gaps, challenges of process applications and potential areas for future research are further proposed and discussed.
引用
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页数:13
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