Chitosan/polyethyleneimine magnetic hydrogels for adsorption of heavy metal ions

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CHEN ZHI; Wang Yi Fan; Zeng Jun; ZHANG YONG; Zhang Zhi Bo; Zhang Zhi Jie; Ma Shan; Tang Cong Ming; Xu Jun Qiang

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Journal Paper

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Journal: Iranian Polymer Journal Year:2022 | Volume:31 | Issue:10 Page(s): 1273-1282

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Title

Chitosan/polyethyleneimine magnetic hydrogels for adsorption of heavy metal ions

Author(s)

Keywords

Polyethyleneimine (PEI)

Chitosan

Magnetic hydrogel

Adsorption

Heavy metal ions

Competitive adsorption

Abstract

Various Adsorption materials are widely used in the treatment of heavy metal wastewater and dye wastewater because of their good Adsorption properties. Here, polyethyleneimine (PEI)-modified Chitosan Magnetic hydrogels were prepared through a chemical co-precipitation method using glutaraldehyde as the cross-linking agent. The functional groups and structures of the hydrogels were characterized by Fourier-transform infrared spectroscopy and X-ray diffraction phase analysis, respectively. The surface structures were characterized by scanning electron microscopy. The magnetic parameters including hysteresis loops of the hydrogel were measured. Heavy metal Adsorption experiments showed that the synthesized Magnetic hydrogel had good Adsorption properties for heavy metals, and saturated Adsorption of Pb2+, Ni2+, and Cu2+ reached 100. 32, 105. 98, and 128. 96 mg g−, 1, respectively. Studies of isothermal Adsorption and Adsorption kinetics showed that the Adsorption process follows a pseudo-second-order kinetics model Adsorption, as the Langmuir isothermal Adsorption. Selective Adsorption of Heavy metal ions by a Magnetic hydrogel showed that Pb2+, Ni2+, and Cu2+ had obvious competitive Adsorption (on the order of Cu2+ , > , Ni2+ , > , Pb2+). The cyclic Adsorption of metal ions showed that the Magnetic hydrogel could be reused by 0. 02 mol L−, 1 EDTA-2Na desorption. The hydrogel retained its good Adsorption properties, and the removal rate of Pb2+, Ni2+, and Cu2+ was still more than 85% after 4 cycles. The PEI-modified Chitosan Magnetic hydrogel adsorbent thus had broad application prospects for the treatment of heavy metal wastewater.

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APA: Copy

CHEN, ZHI, Wang, Yi Fan, Zeng, Jun, ZHANG, YONG, Zhang, Zhi Bo, Zhang, Zhi Jie, Ma, Shan, Tang, Cong Ming, & Xu, Jun Qiang. (2022). Chitosan/polyethyleneimine magnetic hydrogels for adsorption of heavy metal ions. IRANIAN POLYMER JOURNAL (ENGLISH), 31(10), 1273-1282. SID. https://sid.ir/paper/1040855/en

Vancouver: Copy

CHEN ZHI, Wang Yi Fan, Zeng Jun, ZHANG YONG, Zhang Zhi Bo, Zhang Zhi Jie, Ma Shan, Tang Cong Ming, Xu Jun Qiang. Chitosan/polyethyleneimine magnetic hydrogels for adsorption of heavy metal ions. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2022;31(10):1273-1282. Available from: https://sid.ir/paper/1040855/en

IEEE: Copy

ZHI CHEN, Yi Fan Wang, Jun Zeng, YONG ZHANG, Zhi Bo Zhang, Zhi Jie Zhang, Shan Ma, Cong Ming Tang, and Jun Qiang Xu, “Chitosan/polyethyleneimine magnetic hydrogels for adsorption of heavy metal ions,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 31, no. 10, pp. 1273–1282, 2022, [Online]. Available: https://sid.ir/paper/1040855/en

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