Kinetic, isotherm and thermodynamic investigations of phosphate adsorption onto core-shell Fe₃O₄@LDHs composites with easy magnetic separation assistance

Journal of Colloid and Interface Science
Liangguo YanBin Du

Abstract

In this study, three different magnetic core-shell Fe3O4@LDHs composites, Fe3O4@Zn-Al-, Fe3O4@Mg-Al-, and Fe3O4@Ni-Al-LDH were prepared via a rapid coprecipitation method for phosphate adsorptive removal. The composites were characterized by XRD, FTIR, TEM, VSM and BET analyses. Characterization results proved the successful synthesis of core-shell Fe3O4@LDHs composites with good superparamagnetisms. Batch experiments were conducted to study the adsorption efficiency of phosphate. Optimal conditions for the phosphate adsorption were obtained: 0.05 g of adsorbent, solution pH of 3, and contact time of 60 min. Proposed mechanisms for the removal of phosphate species onto Fe3O4@LDHs composites at different initial solution pH were showed. The kinetic data were described better by the pseudo-second-order kinetic equation and KASRA model. The adsorption isotherm curves showed a three-region behavior in the ARIAN model. It had a good fit with Langmuir model and the maximum adsorption capacity followed the order of Fe3O4@Zn-Al-LDH>Fe3O4@Mg-Al-LDH>Fe3O4@Ni-Al-LDH. Thermodynamic analyses indicated that the phosphate adsorption process was endothermic and spontaneous in nature. The three Fe3O4@LDHs composites could be easily separated fr...Continue Reading

References

Jun 1, 2005·Journal of Colloid and Interface Science·Ramesh ChitrakarTakahiro Hirotsu
Jun 14, 2005·Chemosphere·Kazumichi KuzawaTae-Gwan Lee
Feb 4, 2006·Journal of Colloid and Interface Science·Ramesh ChitrakarTakahiro Hirotsu
May 2, 2009·Journal of Colloid and Interface Science·Gaosheng ZhangJiuhui Qu
Nov 27, 2009·Journal of Colloid and Interface Science·Kostas S TriantafyllidisPaul P Mavros
May 22, 2010·Journal of Hazardous Materials·Ritu D Ambashta, Mika Sillanpää

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Citations

Dec 15, 2015·Environmental Science and Pollution Research International·Lu GuoYujie Leng
Jul 15, 2015·Journal of Colloid and Interface Science·Yubo YanLianjun Wang
Sep 20, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Fang MaZengqiang Zhang
Jul 28, 2018·Environmental Technology·Jianwei LinHonghua Zhang
Nov 15, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Ying WangZhenya Zhang
Mar 9, 2019·Recent Patents on Nanotechnology·Saeed AhmedYongjun Feng
Oct 8, 2019·Journal of Environmental Quality·Lipeng WuXiaodong Ding
Mar 3, 2020·Chemical & Pharmaceutical Bulletin·Fumihiko OgataNaohito Kawasaki
Apr 11, 2019·Scientific Reports·Xiaoyu YuanJun Wang
May 3, 2019·Environmental Science and Pollution Research International·Yan-Hong JiangYi Li
Dec 3, 2016·Environmental Science and Pollution Research International·Shanqing JiangHonglei Shi
Mar 5, 2020·Environmental Science and Pollution Research International·Yin XuRunliang Zhu
Apr 16, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·T ReinhardtE Rott
Dec 18, 2020·International Journal of Biological Macromolecules·Ilango Aswin KumarNatrayasamy Viswanathan
Jan 23, 2021·The Science of the Total Environment·Tao LiuZhang Chen
Apr 19, 2021·Journal of Colloid and Interface Science·Sharifur RahmanTodd Mlsna

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