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
作者： Ma, Mengyu 1 ; An, Ning 1 ; Wang, Yanqin 2 ; Zhao, Chao 3 ; Cui, Zhaojie 1 ; Zhou, Weizhi 4 ; Gu, Meixia 5 ; Li, Qian 1 ;
作者机构： 1.Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource R, Qingdao 266200, Peoples R China
2.Shandong Acad Agr Sci, Jinan 250100, Peoples R China
3.Shandong Prov Soil Pollut Prevent & Control Ctr, Jinan 250012, Peoples R China
4.Shandong Univ, Sch Civil Engn, Jinan 250100, Peoples R China
5.Sinopec Petr Engn & Design Co Ltd, Dongying 257100, Peoples R China
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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