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首页> 外文期刊>Journal of Environmental Engineering >Enhanced solubility and biodegradation of naphthalene with biosurfactant
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Enhanced solubility and biodegradation of naphthalene with biosurfactant

机译：生物表面活性剂增强萘的溶解度和生物降解

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Biosurfactant was produced by fermenting kerosene and used vegetable oil using a Pseudomonas sp. under nonsterile conditions. The biosurfactant at a concentration of 0.5 g/L and pH of 10.5 lowered the surface tension of water to 25 mN/m. The biosurfactant was used to enhance the solubility of naphthalene, and the results are compared to an anionic (sodium dedecyl sulfate) and a nonionic (Triton X-100) surfactant. The biosurfactant (5 g/L at pH of 7) enhanced the solubility of naphthalene to more than 30 times its aqueous solubility, Solubilized naphthalene in Triton X-100 and biosurfactant solutions was biodegraded by the same microorganism that produced the biosurfactant. Naphthalene solubilized in biosurfactant and Triton X-100 (400-600 mg/L) was biodegraded in 40 days and 100 h, respectively. Naphthalene in the amount of 30 mg/L was degraded by the Pseudomonas sp. in 2 days. The biosurfactant was also biodegraded during the biodegradation of naphthalene, but this was not the case with Triton X-LOO. The biodegradation of the biosurfactant appeared to compete with the biodegradation of naphthalene. Sodium dedecyl sulfate inhibited the biodegradation of naphthalene at the conditions studied. [References: 34]
机译：生物表面活性剂是通过煤油发酵生产的，并使用假单胞菌属（Pseudomonas sp。）使用过的植物油。在非无菌条件下。浓度为0.5 g / L，pH为10.5的生物表面活性剂将水的表面张力降低至25 mN / m。使用该生物表面活性剂来增强萘的溶解度，并将结果与​​阴离子型（癸基硫酸钠）和非离子型（Triton X-100）表面活性剂进行比较。生物表面活性剂（pH值为7时为5 g / L）将萘的溶解度提高到其水溶性的30倍以上，Triton X-100中的增溶萘被生物表面活性剂溶液降解。溶于生物表面活性剂和Triton X-100（400-600 mg / L）的萘分别在40天和100小时内被生物降解。假单胞菌sp降解了30 mg / L的萘。在2天之内。在萘的生物降解过程中，该生物表面活性剂也被生物降解，但是Triton X-LOO并非如此。生物表面活性剂的生物降解似乎与萘的生物降解竞争。在所研究的条件下，癸基硫酸钠抑制了萘的生物降解。 [参考：34]

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