SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 62 ›› Issue (10): 202-216.DOI: 10.1016/j.cjche.2023.03.016

• Full Length Article • 上一篇    下一篇

Synthesis of a novel magnetic biomass-MOF composite for the efficient removal of phosphates: Adsorption mechanism and characterization study

Aaron Albert Aryee, Chenping Gao, Runping Han, Lingbo Qu   

  1. College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China
  • 收稿日期:2022-12-19 修回日期:2023-03-16 出版日期:2023-10-28 发布日期:2023-12-23
  • 通讯作者: Runping Han,E-mail:rphan67@zzu.edu.cn
  • 基金资助:
    The research was supported by the National Key Research and Development Program of China (2018YFD0401402–04) and Zhongyuan Scholars Foundation (202101510005).

Synthesis of a novel magnetic biomass-MOF composite for the efficient removal of phosphates: Adsorption mechanism and characterization study

Aaron Albert Aryee, Chenping Gao, Runping Han, Lingbo Qu   

  1. College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China
  • Received:2022-12-19 Revised:2023-03-16 Online:2023-10-28 Published:2023-12-23
  • Contact: Runping Han,E-mail:rphan67@zzu.edu.cn
  • Supported by:
    The research was supported by the National Key Research and Development Program of China (2018YFD0401402–04) and Zhongyuan Scholars Foundation (202101510005).

摘要: The adverse effects of eutrophication have prompted the use of various remediation techniques for phosphate (PO43–) removal owing to it being the major causative agent. Herein, the influence of different solvents and ratios of 2-aminoterepthalic acid on the efficiency of magnetic biomass metal–organic framework composites based on the in situ growth of NH2-MIL-101 (Fe) onto magnetized peanut husks towards PO43– removal was assessed via the adsorption technique. The magnetic biocomposite labelled as MPN@NH2-MIL-101 (Fe) exhibited the best efficiency owing to its mesoporous structures and presence of abundant oxygen and nitrogen possessing functional groups. Adsorption results confirmed MPN@NH2-MIL-101 (Fe) to have a high adsorption capacity of (14.0 ±0.3) mg·L-1 at a PO43- concentration of 20 mg·L-1 with an associated high stability within pH 2–10. The adsorption kinetics for the process was well described by both Elovich and pseudo-second-order kinetic models and was mediated by both internal diffusion and liquid film diffusion. The Temkin and Freundlich models fitted the equilibrium data well signifying occurrence of both physical and chemical adsorption on a heterogeneous surface. It is concluded that MPN@NH2-MIL-101 (Fe) is a promising adsorbent for the effective removal of phosphate from a water body.

关键词: Magnetic biomass-MOF composite, Adsorption, Phosphate, Mechanism

Abstract: The adverse effects of eutrophication have prompted the use of various remediation techniques for phosphate (PO43–) removal owing to it being the major causative agent. Herein, the influence of different solvents and ratios of 2-aminoterepthalic acid on the efficiency of magnetic biomass metal–organic framework composites based on the in situ growth of NH2-MIL-101 (Fe) onto magnetized peanut husks towards PO43– removal was assessed via the adsorption technique. The magnetic biocomposite labelled as MPN@NH2-MIL-101 (Fe) exhibited the best efficiency owing to its mesoporous structures and presence of abundant oxygen and nitrogen possessing functional groups. Adsorption results confirmed MPN@NH2-MIL-101 (Fe) to have a high adsorption capacity of (14.0 ±0.3) mg·L-1 at a PO43- concentration of 20 mg·L-1 with an associated high stability within pH 2–10. The adsorption kinetics for the process was well described by both Elovich and pseudo-second-order kinetic models and was mediated by both internal diffusion and liquid film diffusion. The Temkin and Freundlich models fitted the equilibrium data well signifying occurrence of both physical and chemical adsorption on a heterogeneous surface. It is concluded that MPN@NH2-MIL-101 (Fe) is a promising adsorbent for the effective removal of phosphate from a water body.

Key words: Magnetic biomass-MOF composite, Adsorption, Phosphate, Mechanism