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Effects of CaO2 based Fenton - like reaction on heavy metals and microbial community during co-composting of straw and sediment.
Chen, Yaoning; Luo, Xinli; Li, Yuanping; Liu, Yihuan; Chen, Li; Jiang, Hongjuan; Chen, Yanrong; Qin, Xiaoli; Tang, Ping; Yan, Haoqin.
Afiliação
  • Chen Y; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China. Electronic address: cyn@hnu.edu.cn.
  • Luo X; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
  • Li Y; College of Municipal and Mapping Engineering, Hunan City University, Yiyang, Hunan, 413000, China. Electronic address: yuanpingli@hncu.edu.cn.
  • Liu Y; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
  • Chen L; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
  • Jiang H; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
  • Chen Y; School of Resource & Environment, Hunan University of Technology and Business, Changsha, 410205, China.
  • Qin X; State Key Laboratory of Utilization of Woody Oil Resource and Institute of Biological and Environmental Engineering, Hunan Academy of Forestry, Changsha, 410004, China.
  • Tang P; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
  • Yan H; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
Chemosphere ; 301: 134563, 2022 Aug.
Article em En | MEDLINE | ID: mdl-35413365
In this study, a Fenton-like system was constructed by CaO2 and nano-Fe3O4 in the co-composting system of straw and sediment. Its effect on the passivation of heavy metals and the evolution of microbial community were investigated. The results showed that the establishment of CaO2-Fenton-like system increased the residual Cu and residual Zn by 27.62% and 16.80%, respectively. In addition, the CaO2-Fenton-like system facilitated the formation of humic acid (HA) up to 20.84 g·kg-1. Redundancy analysis (RDA) showed that the CaO2-Fenton-like system accelerated bacterial community succession and promoted the passivation of Cu and Zn. Structural equation models (SEMs) indicated that Fenton reaction affected Cu and Zn passivation by affecting pH, bacterial communities, and HA. This study shows that the CaO2-Fenton-like system could promote the application of composting in the remediation of heavy metals contamination in sediment.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostagem / Metais Pesados / Microbiota Idioma: En Revista: Chemosphere Ano de publicação: 2022 Tipo de documento: Article
Texto completo
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PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Compostagem / Metais Pesados / Microbiota Idioma: En Revista: Chemosphere Ano de publicação: 2022 Tipo de documento: Article