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FeOOH-loaded MnO2 nano-composite: An efficient emergency material for thallium pollution incident.
Chen, Meiqing; Wu, Pingxiao; Yu, Langfeng; Liu, Shuai; Ruan, Bo; Hu, Haihui; Zhu, Nengwu; Lin, Zhang.
Afiliação
  • Chen M; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
  • Wu P; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for
  • Yu L; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
  • Liu S; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
  • Ruan B; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
  • Hu H; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
  • Zhu N; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
  • Lin Z; College of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
J Environ Manage ; 192: 31-38, 2017 May 01.
Article em En | MEDLINE | ID: mdl-28131980
ABSTRACT
A FeOOH-loaded MnO2 nano-composite was developed as an emergency material for Tl(I) pollution incident. Structural characterizations showed that FeOOH successfully loaded onto MnO2, the nanosheet-flower structure and high surface area (191 m2 g-1) of material contributed to the excellent performance for Tl(I) removal. FeOOH-loaded MnO2 with a Fe/Mn molar ratio of 12 exhibited a noticeable enhanced capacity for Tl(I) removal compared to that of pure MnO2. The outstanding performance for Tl(I) removal involves in extremely high efficiency (achieved equilibrium and drinking water standard within 4 min) and the large maximum adsorption capacity (450 mg g-1). Both the control-experiment and XPS characterization proved that the removal mechanism of Tl(I) on FeOOH-loaded MnO2 included adsorption and oxidation the oxidation of MnO2 played an important role for Tl(I) removal, and the adsorption of FeOOH loaded on MnO2 enhanced Tl(I) purification at the same time. In-depth purification of Tl(I) had reach drinking water standards (0.1 µg L-1) at pH above 7, and there wasn't security risk produced from the dissolution of Mn2+ and Fe2+. Moreover, the as-prepared material could be utilized as a recyclable adsorbent regenerated by using NaOH-NaClO binary solution. Therefore, the synthesized FeOOH-loaded MnO2 in this study has the potential to be applied as an emergency material for thallium pollution incident.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tálio / Purificação da Água Idioma: En Revista: J Environ Manage Ano de publicação: 2017 Tipo de documento: Article
Texto completo
Imprimir
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PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tálio / Purificação da Água Idioma: En Revista: J Environ Manage Ano de publicação: 2017 Tipo de documento: Article