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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Removal of Nitriles from Synthetic Wastewater by Acrylonitrile Utilizing Bacteria
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Removal of Nitriles from Synthetic Wastewater by Acrylonitrile Utilizing Bacteria

机译：细菌利用丙烯腈去除合成废水中的腈

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摘要

This study describes the ability of two bacteria strains, isolated from an ABS resin manufacturing wastewater treatment system, to remove high acrylonitrile concentrations. Straight chain aliphatic nitrile compound (propionitrile, allyl cyanide); branch chain aliphatic nitrile compound (isobutyronitrile) and aromatic nitrile compound (benzonitrile) removal by Comamonas testosteroni and Acidovorax sp. was also investigated. The results are: Comamonas testosteroni and Acidovorax sp. can remove acrylonitrile completely up to 1904.8 mg/L within 66.6 h and 1538.5 mg/L within 143.3 h, respectively. Comamonas testosteroni degraded acrylonitrile faster than Acidovorax sp., and accumulated much more acrylic acid in the medium than Acidovorax sp. The addition of acrylamide to the medium was removed by Comamonas testosteroni and Acidovorax sp. Both strains utilized acrylic acid, a metabolic by-product of acrylonitrile, as a carbon source and ammonium nitrogen, a metabolic by-product of acrylonitrile, as a nitrogen source for growth. Comamonas testosteroni and Acidovorax sp. removed propionitrile completely up to 1352.8 mg/L and 975.7 mg/L within 166.9 h, respectively. With isobutyronitrile as a substrate, more than 97.8% could be removed within 169.8 h by Comamonas testosteroni up to 1352.8 mg/L, and by Acidovorax sp. up to 975.7 mg/L. These two strains could remove allyl cyanide completely up to 775 mg/L within 49.1 h and benzonitrile completely up to 442.7 mg/L within 31.1 h. Because Comamonas testosteroni and Acidovorax sp. have good degrading ability for removing nitrile compounds they are expected to play an important role in the treatment of nitrile compounds.
机译：这项研究描述了从ABS树脂生产废水处理系统中分离出的两种细菌菌株去除高浓度丙烯腈的能力。直链脂族腈化合物（丙腈，烯丙基氰化物）； Comamonas testosteroni和Acidovorax sp。去除支链脂肪族腈化合物（异丁腈）和芳香族腈化合物（苄腈）。还进行了调查。结果是：Comamonas testosteroni和Acidovorax sp。可以在66.6 h内完全去除1904.8 mg / L的丙烯腈，在143.3 h内完全去除1538.5 mg / L的丙烯腈。 Comamonas testosteroni的降解丙烯腈的速度比Acidovorax sp。快，并且在培养基中积累的丙烯酸比Acidovorax sp。多得多。用Comamonas testosteroni和Acidovorax sp除去向培养基中添加的丙烯酰胺。两种菌株都利用丙烯酸（丙烯腈的代谢副产物）作为碳源和铵氮（丙烯腈的代谢副产物）作为生长的氮源。 Comamonas testosteroni和Acidovorax sp。在166.9小时内分别去除了高达1352.8 mg / L和975.7 mg / L的丙腈。以异丁腈为底物，Comamonas testosteroni（高达1352.8 mg / L）和Acidovorax sp。可在169.8 h内去除97.8％以上。高达975.7 mg / L。这两个菌株可以在49.1 h内完全除去775 mg / L的烯丙基氰化物，在31.1 h内完全除去442.7 mg / L的苄腈。因为Comamonas睾丸激素和Acidovorax sp。具有除去腈化合物的良好降解能力，它们有望在腈化合物的处理中发挥重要作用。

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