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首页> 外文期刊>Asian Journal of Chemistry: An International Quarterly Research Journal of Chemistry >Zero-Valent Iron Supported Microbial Reductive Dechlorination of 2,4-Dichlorophenol
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Zero-Valent Iron Supported Microbial Reductive Dechlorination of 2,4-Dichlorophenol

机译：零价铁负载的2,4-二氯苯酚的微生物还原脱氯

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摘要

The experiment was conducted to examine the potential of zero-valent iron (Fe°) as the sole electron donor for reductive dechlorination of 2,4-dichlorophenol by mixed culture. The optimal conditions and the sustainability of 2,4-dichlorophenol dechlorination in Fe°+microbe system were also investigated. The results showed that, Fe~0 was an effective electron donor to stimulate reductive dechlorination of 2,4-dichlorophenol and 2,4-dichlorophenol (30 mg L~(-1)) could be transformed completely within 68 h. The rate was similar to that with acetate or lactate as electron donor, while the rate was slow with glucose as electron donor. The quantity of Fe~0, inoculation added and pH had a significant effect on 2,4-dichlorophenol dechlorination. The optimal quantity of Fe~0, inoculation added and initial pH was 2.0 g L~(-1), 646.4 mg volatile suspended solid L~(-1) and 8, respectively. Fe~0 sustained 2,4-dichlorophenol dechlorination over a long period. 4-Chlorophenol was the intermediate roduct from 2,4-dichlorophenol, but it was difficult to be further degraded.
机译：进行实验以检验零价铁（Fe°）作为唯一的电子供体通过混合培养对2,4-二氯苯酚进行还原性脱氯的潜力。还研究了Fe +微生物体系中2,4-二氯苯酚脱氯的最佳条件和可持续性。结果表明，Fe〜0是促进2,4-二氯苯酚还原性脱氯的有效电子供体，而2,4-二氯苯酚（30 mg L〜（-1））可在68 h内完全转化。该速率与乙酸盐或乳酸作为电子给体的速率相似，而葡萄糖作为电子给体的速率较慢。 Fe〜0的数量，接种量和pH值对2,4-二氯苯酚脱氯有显着影响。 Fe〜0的最佳添加量，接种量和初始pH分别为2.0 g L〜（-1），646.4 mg挥发性悬浮固体L〜（-1）和8。 Fe〜0可以长时间维持2,4-二氯苯酚的脱氯。 4-氯苯酚是2，4-二氯苯酚的中间产物，但很难进一步降解。

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