SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 33 ›› Issue (5): 279-285.DOI: 10.1016/j.cjche.2020.06.027

• Resources and Environmental Technology • 上一篇    下一篇

Enhanced adsorption of phenol from aqueous solution by carbonized trace ZIF-8-decorated activated carbon pellets

Xinlong Yan1, Yanfang Li1, Xiaoyan Hu1, Rui Feng1, Min Zhou1, Dezhi Han2   

  1. 1 Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineering & Technology, China University of Mining and Technology,;
    Xuzhou 221116, China;
    2 State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • 收稿日期:2020-04-11 修回日期:2020-05-28 出版日期:2021-05-28 发布日期:2021-08-19
  • 通讯作者: Xinlong Yan
  • 基金资助:
    This work was supported by National Natural Science Foundation of China (21606252), the Key Research and Development Program of Xuzhou (KC19214) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

Enhanced adsorption of phenol from aqueous solution by carbonized trace ZIF-8-decorated activated carbon pellets

Xinlong Yan1, Yanfang Li1, Xiaoyan Hu1, Rui Feng1, Min Zhou1, Dezhi Han2   

  1. 1 Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), School of Chemical Engineering & Technology, China University of Mining and Technology,;
    Xuzhou 221116, China;
    2 State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  • Received:2020-04-11 Revised:2020-05-28 Online:2021-05-28 Published:2021-08-19
  • Contact: Xinlong Yan
  • Supported by:
    This work was supported by National Natural Science Foundation of China (21606252), the Key Research and Development Program of Xuzhou (KC19214) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘要: Trace zeolitic imidazolate framework-8 (ZIF-8)-decorated activated carbon (AC) pellets were synthesized by a facile wet impregnation technique. After pyrolysis of the above composite material, the obtained carbon had a large surface area and pore volume, with traces of Zn on its surface. Subsequently, the capacity of the ZIF8/AC samples to adsorb and remove phenol from aqueous media was evaluated in both batch and column experimental setups. The equilibrium adsorption capacity reached 155.24 mg·g-1, which was 2.3 times greater than that of the pure AC (46.24 mg·g-1). In addition, adsorption kinetics were examined by pseudofirst and pseudosecond order models, and adsorption isotherms were fitted into Langmuir and Freundlich equations. The adsorbent could be easily filtered from the solution and washed with methanol and water, while maintaining an efficiency N90% after 4 cycles. The above results make it a potentially reusable candidate for water purification.

关键词: Zeolitic imidazolate framework-8, Activated carbon, Carbonization, Phenol, Adsorption

Abstract: Trace zeolitic imidazolate framework-8 (ZIF-8)-decorated activated carbon (AC) pellets were synthesized by a facile wet impregnation technique. After pyrolysis of the above composite material, the obtained carbon had a large surface area and pore volume, with traces of Zn on its surface. Subsequently, the capacity of the ZIF8/AC samples to adsorb and remove phenol from aqueous media was evaluated in both batch and column experimental setups. The equilibrium adsorption capacity reached 155.24 mg·g-1, which was 2.3 times greater than that of the pure AC (46.24 mg·g-1). In addition, adsorption kinetics were examined by pseudofirst and pseudosecond order models, and adsorption isotherms were fitted into Langmuir and Freundlich equations. The adsorbent could be easily filtered from the solution and washed with methanol and water, while maintaining an efficiency N90% after 4 cycles. The above results make it a potentially reusable candidate for water purification.

Key words: Zeolitic imidazolate framework-8, Activated carbon, Carbonization, Phenol, Adsorption