Carboxymethylcellulose-chitosan film modified magnetic alkaline Ca-bentonite for the efficient removal of Pb(II) and Cd(II) from aqueous solution

被引:0
作者
Yingya Wang
Hanbing Zhang
Muhammad Yaseen
Zhangfa Tong
Ninghua Chen
Huazhen Shi
机构
[1] Guangxi University,Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, College of Chemistry and Chemical Engineering
[2] Guangxi University,College of Resources, Environment and Materials
[3] University of Peshawar,Institute of Chemical Sciences
来源
Environmental Science and Pollution Research | 2021年 / 28卷
关键词
Alkaline Ca-bentonite; Magnetic stability; Carboxymethylcellulose; Heavy metals; Adsorption isotherm;
D O I
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中图分类号
学科分类号
摘要
In order to endow alkaline Ca-bentonite (ACB) with magnetic separation ability, simultaneously obtain better magnetic stability and stronger removal capacity of heavy metal cations; magnetic alkaline Ca-bentonite/carboxymethylcellulose-chitosan film (MACB/C-C) was prepared by organic modification of magnetic alkaline Ca-bentonite (MACB) using non-toxic carboxymethylcellulose and chitosan. Textural characterization results revealed that magnetic Fe3O4 nanoparticles were successfully immobilized on ACB and modified with C-C. The functionalized layer of C-C concurrently enhanced the stability of Fe3O4 and removal performances of heavy metal cations. Adsorption results indicated that MACB/C-C exhibited thorough separation from aqueous solution and greater uptake ability for Pb(II) and Cd(II) (483 mg·g−1 and 123 mg·g−1) than the nascent MACB (335 mg·g−1 and 76 mg·g−1), respectively, at pH 5 and 25 °C temperature. The adsorption of Pb(II) and Cd(II) on MACB/C-C mainly occurred via surface precipitation and complexation when pH > 2. MACB/C-C could be efficiently recycled with marginal decrease in adsorption capacity. The current approach credited to the convenient operation, simplified synthesis, and high efficiency of MACB/C-C could be deemed as a promising alternative for the removal of heavy metal cations from wastewater.
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页码:30312 / 30322
页数:10
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  • [83] Jha MK(undefined)Sorption characteristics of Pb(II) on alkaline Ca-bentonite undefined undefined undefined-undefined
  • [84] Gupta D(undefined)Environmental remediation and application of nanoscale zero-valent iron and its composites for the removal of heavy metal ions: a review undefined undefined undefined-undefined
  • [85] Choubey PK(undefined)Removal of Pb(II) from aqueous solutions by adsorption on magnetic bentonite Environ undefined undefined undefined-undefined
  • [86] Kumar V(undefined)undefined undefined undefined undefined-undefined
  • [87] Jeong J(undefined)undefined undefined undefined undefined-undefined
  • [88] Lee JC(undefined)undefined undefined undefined undefined-undefined
  • [89] Khan M(undefined)undefined undefined undefined undefined-undefined
  • [90] Yaseen M(undefined)undefined undefined undefined undefined-undefined