Preparation and adsorption property of Ca-MMT@La adsorbent

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  • School of Bioengineering and Food,Key Laboratory of Fermentation Engineering (Ministry of Education),Key Laboratory of Industrial Microbiology of Hubei,National “111” Center for Cellular Regulation and Molecular Pharmaceutics,Hubei University of Technology,Wuhan 430068

Received date: 2019-03-01

  Online published: 2022-11-01

Abstract

Lanthanium-modified montmorillonite (Ca-MMT@La) was prepared by loading La3+ into Ca-montmorillonite (Ca-MMT).The specific surface area,structure and chemical composition of Ca-MMT@La was characterized by BET,XRD,FT-IR and XRF.The effects of adsorption time,initial phosphate concentration,pH value of phosphorus-containing solution and temperature on the adsorption performance were investigated.The results showed that the removal efficiency of phosphate by Ca-montmorillonite was significantly improved after lanthanum modification.When the adsorption time was 7h,the adsorption process of Ca-MMT@La reached equilibrium,and the maximum removal efficiency reached 87.82%.With the concentration of phosphate increasing,the removal efficiency reduced.With the increase of pH value of phosphorus-containing solution,the removal efficiency increased firstly and then decreased,and the maximum removal efficiency was 95.96% at pH=3.According to Langmuir isothermal adsorption equation,the adsorption model displayed monomolecular adsorption layer.

Cite this article

Zhou Fengzhen, Li Wenqiu, Wang Wenjing, Guo Huiling . Preparation and adsorption property of Ca-MMT@La adsorbent[J]. New Chemical Materials, 2020 , 48(7) : 284 -289 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.064

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