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首页> 外文会议>International Conference on Remediation of Chlorinated adn Recalcitrant Compounds >Abiotic and Microbial Degradation of Nitrogenous and Chlorinated Organic Compounds in Wetlands: Role of Iron Sulfide and Plant Roots
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Abiotic and Microbial Degradation of Nitrogenous and Chlorinated Organic Compounds in Wetlands: Role of Iron Sulfide and Plant Roots

机译：湿地中含氮和氯化有机化合物的非生物和微生物降解：硫化铁和植物根的作用

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Recent studies have shown that biogeochemical conditions in natural wetlands can facilitate degradation of chlorinated organic and nitrogenous compounds in groundwater by abiotic and biotic processes. Microbial sulfate and Fe(III) reduction can readily occur in wetland soil rich in organic matter, and can lead to precipitation of iron monosulfide (FeS). We have investigated the role of biogenically formed FeS that can serve as electron donor in abiotic reduction of chlorinated hydrocarbons and nitrogenous compounds. In the current study, biogenic FeS was synthesized at bench scale by sulfate reducing microbes; FeS was also synthesized chemically at bench scale. Biogenic and chemogenic FeS are being evaluated for their reactivity towards chlorinated hydrocarbons (particularly carbon tetrachloride (CT)), nitroaromatic compounds, nitrate, and nitrite. The investigation focuses on the potential of biogenic FeS to reduce these compounds, the kinetics of the reduction, and reaction byproducts, in comparison to chemogenic FeS. A critical examination of the
机译：最近的研究表明，天然湿地的生物地球化学条件可以通过非生物和生物过程促进地下水中氯化有机和氮化合物的降解。微生物硫酸盐和Fe（III）可以容易地发生富含有机物质的湿地土壤，并且可以导致铁单硫化铁（FES）的沉淀。我们研究了生物形成的FES的作用，其可以用作氯化烃和氮化合物的非生物减少的电子供体。在目前的研究中，通过硫酸盐减少微生物以板凳尺寸合成生物学。 FES也在化学上以长凳尺度合成。正在评价生物和化学性FES对氯化烃的反应性（特别是四氯化物（CT）），硝基芳族化合物，硝酸盐和亚硝酸盐。调查侧重于生物生物学的潜力，以减少这些化合物，与化学性FES相比，减少减少的动力学和反应副产物。对此的批判性检查

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