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首页> 外文会议>European Symposium on Environmental Biotechnology(ESEB 2004); 20040425-20040428; Oostende; BE >An innovative bioprocess that rapidly and completely dechlorinates chlorinated ethenes
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An innovative bioprocess that rapidly and completely dechlorinates chlorinated ethenes

机译：一种创新的生物工艺，可以快速，完全地对氯化乙烯进行脱氯

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摘要

Dechlortnation of chlorinated ethenes, common groundwater contaminants, was investigated using anaerobic granular sludge exposed to O_2. The exposure established a synchronously anaerobic/aerobic bioconversion process, i.e. reductive dechlorination in combination with aerobic co-oxidation. Experimental results showed that the highest dechlorination rate of tetrachloroethene (PCE), trichloroethene (TCE), cis-dichloroethene (cDCE) and vinyl chloride (VC) was 6.44, 2.98, 1.70 and 0.97nmol/g VSd, respectively, at an initial O_2 concentration of 10, 100, 5 and 0%. Strictly anaerobic conditions favored VC dechlorination and absolutely aerobic conditions was preferred for TCE dechlorination. Considering that both rapid and complete dechlorination are required in overall biodegradation of the chlorinated ethenes, microaerophilic conditions, i.e. 5-10% O_2, are suggested as for a potential process.
机译：使用暴露于O_2的厌氧颗粒污泥，对常见的地下水污染物氯化乙烯的脱氯进行了研究。暴露建立了同步的厌氧/好氧生物转化过程，即与有氧共氧化结合的还原性脱氯。实验结果表明，在初始O_2下，四氯乙烯（PCE），三氯乙烯（TCE），顺二氯乙烯（cDCE）和氯乙烯（VC）的最高脱氯速率分别为6.44、2.98、1.70和0.97nmol / g VSd。浓度为10％，100％，5％和0％。严格的厌氧条件有利于VC脱氯，TCE脱氯优选绝对有氧条件。考虑到氯化乙烯的整体生物降解需要快速和完全脱氯，建议将微需氧条件（即5-10％O_2）用于潜在工艺。

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