Bao Jianfeng, Lv Yuanfei, Liu Chenchen, Li Shuangxi, Yin Zhihong, Yu Yunjiang, Zhu Liandong
School of Resources & Environmental Science, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University, Wuhan 430079, P.R. China.
State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China.
iScience. 2022 May 13;25(6):104403. doi: 10.1016/j.isci.2022.104403. eCollection 2022 Jun 17.
Environmental pollution caused by petroleum hydrocarbons is being paid more and more attention worldwide. Surfactants are able to improve the solubility of petroleum hydrocarbons, but their effects on petroleum hydrocarbon degradation in composting systems are still unclear. In this study, the effects on microbial community succession were investigated by adding petroleum hydrocarbons and rhamnolipids during composting of organic wastes. The results showed that the compost and the addition of rhamnolipids could effectively reduce the petroleum hydrocarbon content with an efficiency of 73.52%, compared to 53.81% for the treatment without addition. Network analyses and Structural Equation Model suggested that there were multiple potential petroleum degraders microbes that might be regulated by nitrogen. The findings in this study can also provide an implication for the treatment of petroleum hydrocarbon pollutants from oil-polluted soil, and the technology can be potentially applied on an industrial scale in practice.
石油烃造成的环境污染在全球范围内日益受到关注。表面活性剂能够提高石油烃的溶解度，但其对堆肥系统中石油烃降解的影响仍不明确。在本研究中，通过在有机废物堆肥过程中添加石油烃和鼠李糖脂，研究了其对微生物群落演替的影响。结果表明，与未添加处理的53.81%相比，堆肥和添加鼠李糖脂可有效降低石油烃含量，效率达73.52%。网络分析和结构方程模型表明，存在多种潜在的石油降解微生物，它们可能受氮的调节。本研究结果也可为油污染土壤中石油烃污染物的处理提供启示，该技术在实践中具有潜在的工业规模应用前景。
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