塑料科技2024，Vol.52Issue(1)：54-58,5.DOI:10.15925/j.cnki.issn1005-3360.2024.01.012
木聚糖基水凝胶对Cu2+吸附性能的研究
Study on Adsorption Properties of Xylan-Based Hydrogels for Cu2+
摘要
Abstract
Using xylan as the raw material,acrylic acid,N-isopropylacrylamide as functional monomers,and N,N'-methylenebisacrylamide as a crosslinking agent,hydrogel adsorbents were prepared through graft polymerization under ultraviolet initiation with photoinitiator benzoin dimethyl ether.The structure of the hydrogel adsorbent was analyzed using Fourier-transform infrared spectroscopy(FTIR)and scanning electron microscopy(SEM).The effects of pH value,adsorbent dosage,initial mass concentration of metal ions,and adsorption time on the adsorption performance of Cu2+ were studied.The results show that the adsorption capacity of Cu2+ increases with the increase of the pH of the Cu2+ solution.When the Cu2+ concentration is 300 mg/L and the pH value is 5.0,the maximum adsorption capacity for Cu2+ is 290 mg/g,with an adsorption rate of 92%.The adsorption of Cu2+ by the hydrogel follows an ion exchange mechanism,and the adsorption behavior conforms to the pseudo-second-order kinetic model.关键词
水凝胶/N-异丙基丙烯酰胺/丙烯酸/铜离子/生物质吸附剂Key words
Hydrogel/N-isopropylacrylamide/Acrylic acid/Cu2+/Biomass adsorption分类
资源环境引用本文复制引用
梁志,胡鑫鑫..木聚糖基水凝胶对Cu2+吸附性能的研究[J].塑料科技,2024,52(1):54-58,5.基金项目
2020年广东省科技专项资金("大专项+任务清单")项目(2020S00062) （"大专项+任务清单"）
