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首页> 外文会议>Natural gas technologies 2005: what's new amp; what's next >BIOREACTOR STUDIES FOR HYDROGEN SULFIDE REMOVAL FROMNATURAL GAS
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BIOREACTOR STUDIES FOR HYDROGEN SULFIDE REMOVAL FROMNATURAL GAS

机译：天然气中硫化氢脱除的生物反应器研究

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Hydrogen sulfide (H2S) removal is a significant problem in the gas industry due to toxicity,rncorrosion, and environmental compliance. An estimated 50% of reserve gas in the US containsrnH2S or other impurities. Microbial oxidation of H2S lowers energy requirements and capital costsrnby converting H2S to sulfate in one process. Bioreactors utilizing the immobilization matrix Bio-rnSep? have previously been used to remove BTEX from groundwater. This technology along withrnBio-Sep?S (sulfide-sorbing version of the beads) has been used to remove H2S from a gas streamrncontaining 10,000ppm H2S. Beads inoculated with Thiobacillus denitrificans were used inrnstirred-tank and packed-bed bioreactors. The stirred-tank bioreactor removed H2S at maximumrngas flow rates of 7.6 and 5.0 L/h, over 2 and 8 months for Bio-Sep? and Bio-Sep?S respectivelyrnwith cell densities of 108 cells/bead. The goal of this work is to develop an economically-viablernbioreactor for ‘stranded' natural gas.
机译：由于毒性，腐蚀性和环境合规性，硫化氢（H2S）的去除在天然气工业中是一个重大问题。在美国，估计有50％的储备气含有H2S或其他杂质。通过在一个过程中将H2S转化为硫酸盐，H2S的微生物氧化可降低能源需求和资本成本。利用固定基质Bio-rnSep？的生物反应器？以前曾用于从地下水中去除BTEX。这项技术与rnBio-Sep？S（珠的硫化物吸附形式）一起用于从含10,000ppm H2S的气流中去除H2S。接种反硝化硫杆菌的珠子用于搅拌槽和填充床生物反应器。对于Bio-Sep ?，搅拌罐生物反应器在2个月和8个月内以7.6​​和5.0 L / h的最大气体流速去除了H2S。和Bio-Sep？S分别具有108个细胞/珠的细胞密度。这项工作的目标是为“搁浅”天然气开发一种经济可行的生物反应器。

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