Comparison of exogenous degrader-enhanced bioremediation with low-dose persulfate oxidation for polycyclic aromatic hydrocarbon removal in alkaline soil:efficiency and influence on ecological health

作     者：Zhuoyue Yang Zuotao Zhang Yiwei Zuo Jing Zhang Panyue Zhang Zhuoyue Yang;Zuotao Zhang;Yiwei Zuo;Jing Zhang;Panyue Zhang

作者机构：Beijing Key Laboratory for Source Control Technology of Water PollutionCollege of Environmental Science&EngineeringBeijing Forestry UniversityBeijing 100091China School of EnvironmentTsinghua UniversityBeijing 100084China Beijing 101 Middle SchoolBeijing 100091China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2023年第17卷第11期

页      面：157-168页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：supported by the National Key Research and Development Program of China(Nos.2020YFC1808801,2020YFC1808805) the National Natural Science Foundation of China(Nos.41773082,41573065) 

主　　题：Bioaugmentation Low-dose persulfate oxidation Polycyclic aromatic hydrocarbon Remediation 

摘      要：Polycyclic aromatic hydrocarbon(PAH)-contaminated soils are usually complex and characterized by a lack of nutrition and soil salinization,resulting in difficulties in soil *** this study,bioaugmentation with a PAH-degrading Bacillus PheN7(BA)and low-dose persulfate oxidation(PS),along with natural biodegradation,were utilized to remediate alkaline PAH-contaminated *** soil used in the study had a pH of 9.35,and the total PAH content was 568.8±31.0 mg/kg dry *** 42 d of remediation,the degradation efficiency of PAHs was 96.72%and 93.88%using persulfate oxidation and bioaugmentation,respectively,whereas 38.66%of PAHs were degraded in natural attenuation(NA).Bacillus was the dominant genera throughout the process of bioremediation with the relative abundance of 79.3%on day 42 in the BA system,whereas,Alcanivorax was enriched and became the dominant genera in PS *** the meantime,PAH degradation genes were detected with remarkably higher level in the BA system than in PS system during the *** addition to the degradation of contaminants,persulfate oxidation promotes microbial bioremediation efficiency mainly by lowering the pH to neutral and increasing the active phosphorus content in the *** species and ecological niches were less reduced in the PS system than in the BA ***,persulfate oxidation had a better impact on the soil microbiome and is more suitable for long-term soil health than bioaugmentation through PheN7 addition.