广西师范大学学报（自然科学版）2024，Vol.42Issue(5)：150-162,13.DOI:10.16088/j.issn.1001-6600.2024030702
赤泥-聚丙烯酸-羧甲基纤维素水凝胶对水中Pb2+吸附研究
Adsorption Effect of Red Mud-Polyacrylic Acid-Carboxymethyl Cellulose Hydrogel on Pb2+in Water
摘要
Abstract
In order to solve the pollution of lead(Pb)in the environment and to properly dispose of red mud,an industrial solid waste generated in alumina oxide smelting.In this study,red mud was used as raw material,sodium carboxymethyl cellulose(CMC)and acrylic acid(AA)were introduced through polymerization and cross-linking reaction to prepare red mud-polyacrylic acid-carboxymethyl cellulose(RMAAC)composite hydrogel.It had adsorption performance,strong stability and high recycling rate,which were used as adsorbents for adsorption of Pb in water.The adsorption of Pb2+by RMAAC was mainly attributed to monomolecular layer chemisorption with the involvement of physisorption.The adsorption mechanisms may include ion exchange,functional group complexation,cation-π and ligand chelation.The maximum adsorption amount calculated by Langmuir model was 730.16 mg/g,and excellent adsorption properties within a broad pH range of 3 to 6.RMAAC showed high selective adsorption capacity for Pb2+in the pollution of multiple heavy metal ions.关键词
水凝胶/赤泥/复合材料/铅/吸附机理/选择性吸附Key words
hydrogel/red mud/complex material/lead/adsorption mechanism/selective adsorption分类
资源环境引用本文复制引用
付佳慧,王威,邓华,赵栋,张舒云,叶顺云,胡乐宁..赤泥-聚丙烯酸-羧甲基纤维素水凝胶对水中Pb2+吸附研究[J].广西师范大学学报（自然科学版）,2024,42(5):150-162,13.基金项目
广西重点研发计划项目(GKAB22035038) （GKAB22035038）
