| Comparison of the efficiency and microbial mechanisms of chemical- and bio-surfactants in remediation of petroleum hydrocarbon | |
Zhuang, Xuliang ; Wang, Yaxin; Wang, Haoyu; Dong, Yuzhu; Li, Xianglong; Wang, Shijie; Fan, Haonan; Wu, Shanghua
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| 2022 | |
| Source Publication | ENVIRONMENTAL POLLUTION
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| ISSN | 0269-7491 |
| Volume | 314Pages:120198-1-11 |
| Abstract | Surfactant-enhanced remediation (SER) is one of the most effective methods for petroleum hydrocarbon -contaminated sites compared to single physical and chemical methods. However, biosurfactants are not as commonly used as chemical surfactants, and the actual remediation effects and related mechanisms remain undefined. Therefore, to comprehensively compare the remediation effects and biological mechanisms of bio-surfactants and chemical surfactants, soil column leaching experiments including two biosurfactants (rhamno-lipids and lipopeptide) and three commercially used chemical surfactants (Tween 80, Triton X-100, and Berol 226SA) were conducted. After seven days of leaching, rhamnolipids exhibited the highest petroleum hydro-carbon removal rate of 61.01%, which was superior to that of chemical surfactants (11.73-18.75%) in n-alkanes C10-C30. Meanwhile, rhamnolipids exhibited a great degradation advantage of n-alkanes C13-C28, which was 1.22-30.55 times that of chemical surfactants. Compared to chemical surfactants, biosurfactants significantly upregulated the soil's biological functions, including soil conductivity (80.90-155.56%), and soil enzyme ac-tivities of lipase (90.31-497.10%), dehydrogenase (325.00-655.56%), core enzyme activities of petroleum hy-drocarbon degradation, and quorum sensing between species. Biosurfactants significantly changed the composition of Pseudomonas, Citrobacter, Acidobacteriota, and Enterobacter at the genus level. Meanwhile, chemical surfactants had less influence on the bacterial community and interactions between species. Moreover, the biosurfactants enhanced the microbial interactions and centrality of petroleum hydrocarbon degraders in the community based on the network. Overall, this work provides a systematic comparison and understanding of the chemical-and bio-surfactants used in bioremediation. In the future, we intend to apply biosurfactants to practical petroleum hydrocarbon-contaminated fields to observe realistic remediation effects and compare their functional mechanisms. |
| Department | 中国科学院环境生物技术重点实验室 |
| Keyword | Petroleum hydrocarbons Bioremediation Surfactant -enhanced leaching Functional prediction Co -occurrence network |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/48552 |
| Collection | 中国科学院环境生物技术重点实验室 |
| Affiliation | 1.Chinese Academy of Sciences 2.Research Center for Eco-Environmental Sciences (RCEES) 3.University of Chinese Academy of Sciences, CAS 4.Institute of Tibetan Plateau Research, CAS |
| Recommended Citation GB/T 7714 | Zhuang, Xuliang,Wang, Yaxin,Wang, Haoyu,et al. Comparison of the efficiency and microbial mechanisms of chemical- and bio-surfactants in remediation of petroleum hydrocarbon[J]. ENVIRONMENTAL POLLUTION,2022,314:120198-1-11. |
| APA | Zhuang, Xuliang.,Wang, Yaxin.,Wang, Haoyu.,Dong, Yuzhu.,Li, Xianglong.,...&Wu, Shanghua.(2022).Comparison of the efficiency and microbial mechanisms of chemical- and bio-surfactants in remediation of petroleum hydrocarbon.ENVIRONMENTAL POLLUTION,314,120198-1-11. |
| MLA | Zhuang, Xuliang,et al."Comparison of the efficiency and microbial mechanisms of chemical- and bio-surfactants in remediation of petroleum hydrocarbon".ENVIRONMENTAL POLLUTION 314(2022):120198-1-11. |
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