A novel magnetic adsorbent based on waste litchi peels for removing Pb(II) from aqueous solution

Journal of Environmental Management
Ruixue JiangXiaochen Li

Abstract

A new magnetic bioadsorbent, magnetic litchi peel (MLP), was synthesized by coating powdered litchi peel with Fe3O4, and was used for removing Pb(II) from aqueous solutions. The influencing factors, adsorption isotherms, kinetics, and thermodynamics of Pb(II) adsorption by MLP were investigated using batch assays. Optimum Pb(II) adsorption by MLP was achieved using a contact time of 120 min, an adsorbent dose of 5 g/L, and pH of 6.0. The adsorption equilibrium data conformed to the Langmuir isotherm model, yielding a maximum Pb(II) adsorption capacity of 78.74 mg/g. The adsorption kinetics for Pb(II) adsorption by MLP followed a pseudo-second-order model. The thermodynamic results suggested that Pb(II) adsorption by MLP was spontaneous and exothermic. Additionally, the magnetic adsorbent was easily and rapidly separated out of solution under an external magnetic field.

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Citations

Sep 1, 2015·Environmental Science and Pollution Research International·Shalini SrivastavaM K Mondal
Aug 10, 2015·Journal of Environmental Management·Hao ZhengXiaochen Li
Feb 22, 2018·Environmental Technology·Muhammad Afzal KambohMohd Marsin Sanagi
Sep 13, 2019·Environmental Science and Pollution Research International·Akeem Adeyemi OladipoMustafa Gazi
Jan 15, 2020·Environmental Science and Pollution Research International·Maria Roniele Félix OliveiraCarlucio Roberto Alves
Jun 24, 2020·International Journal of Phytoremediation·Yekbun Avşar Teymur, Fuat Güzel
May 4, 2017·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Cheng ChenYan Liang
Mar 11, 2017·Environmental Science and Pollution Research International·Vitória Segabinazzi FolettoGuilherme Luiz Dotto
Dec 1, 2020·Environmental Research·Liyin LiRongshu Zhu
Feb 23, 2018·Journal of Agricultural and Food Chemistry·Ivo SafarikKristyna Pospiskova

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