Sulfur-containing iron carbon nanocomposites activate persulfate for combined chemical oxidation and microbial remediation of petroleum-polluted soil

文献类型： 外文期刊

第一作者： Ma, Mengyu

作者： Ma, Mengyu;An, Ning;Cui, Zhaojie;Li, Qian;Wang, Yanqin;Zhao, Chao;Zhou, Weizhi;Gu, Meixia

作者机构：

关键词： Petroleum -polluted soil; Persulfate activation; Sulfur -containing iron carbon nanocomposites; Indigenous microbial remediation

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2024 年 469 卷

页码：

收录情况： SCI

摘要： In this study, sulfur -containing iron carbon nanocomposites (S@Fe-CN) were synthesized by calcining ironloaded biomass and utilized to activate persulfate (PS) for the combined chemical oxidation and microbial remediation of petroleum -polluted soil. The highest removal efficiency of total petroleum hydrocarbons (TPHs) was achieved at 0.2% of activator, 1% of PS and 1:1 soil -water ratio. The EPR and quenching experiments demonstrated that the degradation of TPHs was caused by the combination of 1O2,& sdot;OH, SO4 & sdot;-, and O2 & sdot;-. In the S@Fe-CN activated PS (S@Fe-CN/PS) system, the degradation of TPHs underwent two phases: chemical oxidation (days 0 to 3) and microbial degradation (days 3 to 28), with kinetic constants consistent with the pseudo -first -order kinetics of chemical and microbial remediation, respectively. In the S@Fe-CN/PS system, soil enzyme activities decreased and then increased, indicating that microbial activities were restored after chemical

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