塑料科技2025，Vol.53Issue(4)：46-51,6.DOI:10.15925/j.cnki.issn1005-3360.2025.04.008
木聚糖-g-丙烯酸水凝胶对亚甲基蓝吸附性能研究
Study on Adsorption Properties of Xylan-g-acrylic Acid Hydrogels for Methylene Blue
摘要
Abstract
Xylan was used as the raw material,acrylic acid as the functional monomer,and N,N'-methylenebisacrylamide as the crosslinker to prepare xylan-g-acrylic acid hydrogel via graft polymerization.The effects of pH value,adsorbent dosage,initial concentration of methylene blue,adsorption time,salinity,and regeneration cycles on the adsorption performance of methylene blue were investigated.The results showed that the optimal pH range for the hydrogel to remove methylene blue was 5～10,and the adsorption equilibrium time was approximately 210 min.The hydrogel exhibits excellent adsorption performance for methylene blue,with an adsorption removal rate as high as 97%for moderate to low concentration(≤400 mg/L)methylene blue solutions.The adsorption behavior of the hydrogel towards methylene blue conformed to the pseudo-second-order kinetic model and the Langmuir isotherm model.The maximum adsorption capacity,as calculated from the Langmuir adsorption model,could reach 1 405 mg/g.The xylan-g-acrylic acid hydrogel demonstrated good regeneration and reusability,and it can be used as a biomass adsorbent for the treatment of methylene blue wastewater.关键词
水凝胶/丙烯酸/亚甲基蓝/生物质吸附剂Key words
Hydrogel/Acrylic acid/Methylene blue/Biomass adsorbent分类
资源环境引用本文复制引用
梁志,王丹菊,胡鑫鑫..木聚糖-g-丙烯酸水凝胶对亚甲基蓝吸附性能研究[J].塑料科技,2025,53(4):46-51,6.基金项目
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"）
广东省普通高校特色创新类项目(2021KTSCX325) （2021KTSCX325）
广东省高职教育创新创业训练计划项目(粤教职函[2022]23号:310) （粤教职函[2022]23号:310）
