期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 241, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2023.124579
关键词
Chitosan; Hydrogel; Rectorite; Adsorption; Pollutant
A novel hydrogel adsorbent was developed by incorporating natural rectorite (REC) into a chitosan-g-poly (2-acrylamido-2-methyl-propane-sulfonicacid) hydrogel network, which exhibited enhanced adsorption capacities and removal rates for methylene blue (MB) compared to commercial activated carbons. The adsorbent showed high adsorption efficiency in a broad pH range (2-11) and could be reused for >4 times.
Polysaccharide-based hydrogel adsorbents become popular because of their high adsorption capacity and fast adsorption rate, but their low removal rate and poor pH resistance have always been fatal shortcomings. Herein, a feasible strategy was proposed to strengthen the ability of hydrogel adsorbent to remove organic pollutants (i. e., dye) by incorporating natural rectorite (REC) into chitosan-g-poly (2-acrylamido-2-methyl-propane-sulfonicacid) hydrogel network to form a rectorite-in-polymer network structure. The introduction of less dosage of REC (1.2 wt%) into the hydrogel facilitates to improve its adsorption capacities toward methylene blue (MB) in deionized water, tap water, seawater, Yangtze River water, and Yellow River water (1083.39-1303.49 mg/g); while incorporating higher content of REC (15.8 wt% REC) helps to improve the removal rate (99.6% for MB in real waters), which are greatly superior to commercial activated carbons. The adsorbent keeps high adsorption efficiency in a broad pH range (2-11), and can be reused for >4 times.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据