Enhanced bioremediation of aged polycyclic aromatic hydrocarbons in soil using immobilized microbial consortia combined with strengthening remediation strategies

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dc.contributor.authorZhou, Haixuan
dc.contributor.authorGao, Xiurong
dc.contributor.authorWang, Suhang
dc.contributor.authorZhang, Youchi
dc.contributor.authorCoulon, Frederic
dc.contributor.authorCai, Chao
dc.date.accessioned2023-02-01T12:53:53Z
dc.date.available2023-02-01T12:53:53Z
dc.date.issued2023-01-18
dc.description.abstractMicrobial biodegradation is considered as one of the most effective strategies for the remediation of soil contaminated with polycyclic aromatic hydrocarbons (PAHs). To improve the degradation efficiency of PAHs, PAH-degrading consortia combined with strengthening remediation strategies was used in this study. The PAH biodegrading performance of seven bacterial consortia constructed by different ratios of Mycobacterium gilvum MI, Mycobacterium sp. ZL7 and Rhodococcus rhodochrous Q3 was evaluated in an aqueous system containing phenanthrene, pyrene, benzo[a]pyrene and benzo[b]fluoranthene. Bacterial consortium H6 (Q3:ZL7:MI = 1:2:2) performed a high degrading efficiency of 59% in 8 days. The H6 was subsequently screened to explore its potential ability and performance to degrade aged PAHs in soils from a coking plant and the effects of strengthening strategies on the aged PAH degradation, including the addition of glucose or sodium dodecyl benzene sulfonate (SDBS) individually or as a mixture along immobilization of the inoculant on biochar. The highest degradation efficiencies, which were 15% and 60% for low-molecular-weight (LMW) PAHs and high-molecular-weight (HMW) PAHs, respectively, were observed in the treatment using immobilized microbial consortium H6 combined with the addition of glucose and SDBS after 24 days incubation. This study provides new insights and guidance for future remediation of aged PAH contaminated soils.en_UK
dc.identifier.citationZhou H, Gao X, Wang S, et al., (2023) Enhanced bioremediation of aged polycyclic aromatic hydrocarbons in soil using immobilized microbial consortia combined with strengthening remediation strategies, International Journal of Environmental Research and Public Health, Volume 20, Issue 3, January 2023, Article number 1766en_UK
dc.identifier.issn1661-7827
dc.identifier.urihttps://doi.org/10.3390/ijerph20031766
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19080
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectPAH degradationen_UK
dc.subjectbacterial consortiaen_UK
dc.subjectimmobilizationen_UK
dc.subjectstrengthening remediationen_UK
dc.titleEnhanced bioremediation of aged polycyclic aromatic hydrocarbons in soil using immobilized microbial consortia combined with strengthening remediation strategiesen_UK
dc.typeArticleen_UK

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