标题: Synergistic effects of rice husk biochar and aerobic composting for heavy oil-contaminated soil remediation and microbial community succession evaluation

作者: Lv, YF (Lv, Yuanfei); Bao, JF (Bao, Jianfeng); Liu, DY (Liu, Dongyang); Gao, XX (Gao, Xinxin); Yu, YJ (Yu, Yunjiang); Zhu, LD (Zhu, Liandong)

来源出版物: JOURNAL OF HAZARDOUS MATERIALS 卷: 448 文献号: 130929 DOI: 10.1016/j.jhazmat.2023.130929 提前访问日期: FEB 2023 出版年: APR 15 2023

摘要: Soil petroleum pollution is an urgent problem in modern society, which seriously threatens the ecological bal-ance and environmental safety. Aerobic composting technology is considered economically acceptable and technologically feasible for the soil remediation. In this study, the combined experiment of aerobic composting with the addition of biochar materials was conducted for the remediation of heavy oil-contaminated soil, and treatments with 0, 5, 10 and 15 wt% biochar dosages were labeled as CK, C5, C10 and C15, respectively. Conventional parameters (temperature, pH, NH4+-N and NO3--N) and enzyme activities (urease, cellulase, dehy-drogenase and polyphenol oxidase) during the composting process were systematically investigated. Remedia-tion performance and functional microbial community abundance were also characterized. According to experimental consequences, removal efficiencies of CK, C5, C10 and C15 were 48.0%, 68.1%, 72.0% and 73.9%, respectively. The comparison with abiotic treatments corroborated that biostimulation rather than adsorption effect was the main removal mechanism during the biochar-assisted composting process. Noteworthy, the bio-char addition regulated the succession process of microbial community and increased the abundance of mi-croorganisms related to petroleum degradation at the genus level. This work demonstrated that aerobic composting with biochar amendment would be a fascinating technology for petroleum-contaminated soil remediation.

作者关键词: Aerobic composting; Rice husk biochar; Heavy oil-contaminated soil; Microbial abundance; Functional genes

地址: [Lv, Yuanfei; Bao, Jianfeng; Liu, Dongyang; Gao, Xinxin; Zhu, Liandong] Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm Bi, Hubei Int Scienti f & Technol Cooperat Base Sustai, Wuhan 430079, Peoples R China.

[Yu, Yunjiang] Minist Ecol & Environm, South China Inst Environm Sci, State Environm Protect Key Lab Environm Pollut Hlt, Guangzhou 510655, Peoples R China.

[Zhu, Liandong] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China.

通讯作者地址: Zhu, LD (通讯作者)，Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm Bi, Hubei Int Scienti f & Technol Cooperat Base Sustai, Wuhan 430079, Peoples R China.

Zhu, LD (通讯作者)，Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China.

电子邮件地址: ldzhu@whu.edu.cn

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