Investigation of the preparation and desalination property of magnetic chitosan hybrid nanofiltration membranes

化学工业与工程

Chemcial Industry and Engineering

2025, Vol. 42

Issue (1) :54-58 DOI: 10.13353/j.issn.1004.9533.20232026

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Investigation of the preparation and desalination property of magnetic chitosan hybrid nanofiltration membranes

DENG Bo, GUO Shiqi, WU Yonghong, HUANG Heming, ZHANG Bing

School of Petrochemical Engineering, Shenyang University of Technology, Liaoyang 111003, Liaoning, China

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Abstract Nanofiltration membranes were prepared using polyacrylonitrile as membrane matrix and magnetic chitosan (MCs) as dopant. The thermal stability and surface functional groups of the membranes were correspondingly characterized by thermogravimetric analysis and infrared spectroscopy. The effects of some factors including dopant content, feed concentration and trans-membrane pressure on the desalination of the membranes were investigated. The results show that the thermal stability of the nanofiltration membrane increases, and the Ca²⁺ rejection first increases then decreases, with the increasing of MCs content in membranes. The Ca²⁺ rejection can reach to 100% for the as-prepared nanofiltration membranes with MCs content of 2% in raw materials under the conditions of feed concentration of 40 mg·L^-1 and transmembrane pressure of 0.10 MPa.

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	DENG Bo
	GUO Shiqi
	WU Yonghong
	HUANG Heming
	ZHANG Bing

Keywords： nanofiltration membrane industrial wastewater Ca²⁺ magnetic chitosan

Received 2023-09-03;

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DENG Bo, GUO Shiqi, WU Yonghong, HUANG Heming, ZHANG Bing.Investigation of the preparation and desalination property of magnetic chitosan hybrid nanofiltration membranes[J] Chemcial Industry and Engineering, 2025,V42(1): 54-58

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