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首页> 外文期刊>Journal of Xenobiotics >Effect of additional carbon source on biodegradation of linear alkylbenzene sulfonate by las-utilizing bacteria
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Effect of additional carbon source on biodegradation of linear alkylbenzene sulfonate by las-utilizing bacteria

机译：附加碳源对利用细菌细菌降解线性烷基苯磺酸盐的影响

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Aerobic biodegradation of linear alkylbenzene sulfonate (LAS) by LAS-utilizing bacteria (LUB) in the presence of other sources of carbon (glucose and soluble starch) was examined. Biodegradation of LAS was monitored as primary degradation in terms of half-life (t?) of the surfactant. Biodegradation of LAS by the individual LUB was slower in the presence of Glucose. Biodegradation of the surfactant by the various consortia of LUB was slower in the presence of the carbon sources: t? increased to 3 days. The rates of biodegradation by the consortia can be ranked as: four-membered (t?=9 days) > three-membered (t?=9 to 13 days) > two-membered consortia (t?=10 to 15 days). Generally, degradation in the presence of the carbon sources was faster with the consortia than the individual species. Degradation of the surfactant by the LUB was generally fastest in the absence of additional carbon sources. The possible role of additional carbon sources in persistence of surfactant in water bodies and the application of the observation in management of LAS-containing-effluent is suggested.
机译：在存在其他碳源（葡萄糖和可溶性淀粉）的情况下，研究了利用LAS的细菌（LUB）对线性烷基苯磺酸盐（LAS）的好氧生物降解。以表面活性剂的半衰期（t 2）表示的主要降解来监测LAS的生物降解。在葡萄糖存在下，单个LUB对LAS的生物降解速度较慢。在存在碳源的情况下，LUB的各种财团对表面活性剂的生物降解速度较慢。增加到3天。财团的生物降解速率可分类为：四元（t 2 ＝ 9天）＞三元（t 2 ＝ 9至13天）＞两元财团（t 1 ＝ 10至15天）。通常，财团在碳源存在下的降解要比单个物种快。在没有其他碳源的情况下，LUB对表面活性剂的降解通常最快。建议了其他碳源在水体中表面活性剂持久性中的可能作用，以及该观察结果在含LAS废水管理中的应用。

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