Recent advances in microbial capture of hydrogen sulfide from sour gas via sulfur-oxidizing bacteria.

Recent advances in microbial capture of hydrogen sulfide from sour gas via sulfur-oxidizing bacteria.
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通过硫氧化细菌微生物捕获酸性气体中硫化氢的最新进展

DOI:
10.1002/elsc.202100006
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发表时间:
2021-10
影响因子:
2.7
通讯作者:
Xing J
Xing J
中科院分区:
工程技术3区
文献类型:
--
作者:
Chen Z;Yang G;Hao X;Samak NA;Jia Y;Peh S;Mu T;Yang M;Xing J

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生物脱硫具有在环境温度和大气压下操作的几个显著的环境优势,不需要有毒化学品以及形成生物可重复使用的硫(S 0),与传统的物理化学方法相比,生物脱硫在从酸性气体中去除硫化氢方面越来越受到关注。然而,生物质的低生物量,工艺溶液的酸化,生物质的回收和生物-SO的选择性限制了其工业应用。因此,还需要从不同的研究角度对BDS工艺进行改进,以利于其工业化应用。本文从菌种改造、吸收强化、生物反应器改造等方面综述了近年来酸性气体中硫化氢的微生物捕集技术的研究进展。提出了解决BDS工艺局限性的几种有效方法,为BDS的产业化发展铺平了道路。
Biological desulfurization offers several remarkably environmental advantages of operation at ambient temperature and atmospheric pressure, no demand of toxic chemicals as well as the formation of biologically re‐usable sulfur (S0), which has attracted increasing attention compared to conventionally physicochemical approaches in removing hydrogen sulfide from sour gas. However, the low biomass of SOB, the acidification of process solution, the recovery of SOB, and the selectivity of bio‐S0 limit its industrial application. Therefore, more efforts should be made in the improvement of the BDS process for its industrial application via different research perspectives. This review summarized the recent research advances in the microbial capture of hydrogen sulfide from sour gas based on strain modification, absorption enhancement, and bioreactor modification. Several efficient solutions to limitations for the BDS process were proposed, which paved the way for the future development of BDS industrialization.
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