生物表面活性剂介导的生物电动修复柴油污染环境。
Biosurfactant mediated bioelectrokinetic remediation of diesel contaminated environment.
机构信息
Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Serkadu, Vellore, 632115, Tamilnadu, India.
Research Chair in Laser Diagnosis of Cancers, Department of Physics and Astronomy, College of Science, King Saud University, Riyadh KSA, P.O. Box -2455, Riyadh, 11451, Saudi Arabia.
出版信息
Chemosphere. 2021 Feb;264(Pt 1):128377. doi: 10.1016/j.chemosphere.2020.128377. Epub 2020 Sep 18.
The present study integrated the electrokinetic (EK) with bioremediation (Bioelectrokinetic -BEK) of diesel hydrocarbon by Staphylococcus epidermidis EVR4. It was identified as efficient biosurfactant producing bacteria and growth parameters was optimized using response surface methodology. Upon degradation, there is a complete disappearance of peaks from nonane (C) to tricosane (C) and 85%, 47% of degradation of pentacosane and octacosane respectively. Marine bacterial strain, EVR4 was found to be potential to degrade the diesel with a maximum degradation efficiency of 96% within 4 d, which was due to its synergistic role of biosurfactant and catabolic enzymes (dehydrogenase, catalase and cytochrome C). The application of integrated BEK was an effective insitu method for the remediation of diesel contaminated soil by BEK (84%) than EK (67%). EVR4 as an effective strain can be employed for BIO-EK method to clean the diesel hydrocarbon polluted environment.
本研究将电动（EK）与表皮葡萄球菌 EVR4 的生物修复（生物电化学修复-BEK）相结合，用于处理柴油烃。表皮葡萄球菌 EVR4 被鉴定为高效生物表面活性剂产生菌，并通过响应面法优化了其生长参数。在降解过程中，从壬烷（C）到二十三烷（C）的峰完全消失，分别有 85%和 47%的二十五烷和二十八烷降解。海洋细菌菌株 EVR4 具有降解柴油的潜力，在 4 天内最大降解效率达到 96%，这是由于生物表面活性剂和代谢酶（脱氢酶、过氧化氢酶和细胞色素 C）的协同作用。与 EK（67%）相比，集成 BEK 的应用是一种有效的原位修复柴油污染土壤的方法，BEK 的修复效率为 84%。EVR4 作为一种有效的菌株，可以用于 BIO-EK 方法来清洁柴油烃污染的环境。
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