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Mechanisms of polystyrene nanoplastics adsorption onto activated carbon modified by ZnCl2.
Xing, Xinyi; Zhang, Yanting; Zhou, Guanyu; Zhang, Yujian; Yue, Jiapeng; Wang, Xinyu; Yang, Zhiwei; Chen, Junru; Wang, Qingguo; Zhang, Jing.
Afiliación
  • Xing X; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Zhang Y; College of Architecture and Environment, Sichuan University, Chengdu 610065, China. Electronic address: zhangyanting@stu.scu.edu.cn.
  • Zhou G; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Zhang Y; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Yue J; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Wang X; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Yang Z; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Chen J; College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Wang Q; College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Earth Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China.
  • Zhang J; College of Architecture and Environment, Sichuan University, Chengdu 610065, China; College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin, Sichuan 644000, China. Electronic address: zjing428
Sci Total Environ ; 876: 162763, 2023 Jun 10.
Article en En | MEDLINE | ID: mdl-36921872
In this study, the adsorption capacity of activated carbon was enhanced after zinc chloride activation. The effects of pore filling, n-π and π-π interaction and electrostatic interaction on the adsorption of polystyrene nanoplastics (PSNPs) by activated carbon were determined by SEM, BET, Raman spectrum, FTIR and surface Zeta potential. Pore filling, electrostatic interaction and n-π interaction and π-π interaction all played a role in the adsorption process, but n-π interaction and π-π interaction was not the decisive role. The adsorption of PSNPs on activated carbon conformed to the pseudo-second-order kinetics and Langmuir isotherm, and there was spontaneous physical adsorption process driven by entropy in the adsorption process. Further, the effects of common anions SO42-, HCO3-, and Cl- in water on the adsorption of PSNPs by activated carbon were investigated, and the results showed that the presence of these ions could increase the adsorption capacity to some extent. ZCAC has a stable adsorption capacity under tap water, but its adsorption capacity is affected under lake water. In addition, the reuse of activated carbon was investugated, and the adsorption capacity of activated carbon was fully recovered after high temperature calcination. This study provided a direction for materials modification of adsorbed nanoplastics and a feasible method for removal of nanoplastics in drinking water treatment plants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Total Environ Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Total Environ Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos