中国造纸2026，Vol.45Issue(4)：180-188,9.DOI:10.11980/j.issn.0254-508X.2026.04.023
碳酸钙复合材料的制备及其对Fe3+的吸附研究
Preparation of Calcium Carbonate Composite Materials and Their Adsorption of Fe3+
摘要
Abstract
This study aimed to investigate the influence mechanisms of dopamine(DA)and sodium alginate(SA)as regulating agents on the structure of calcium carbonate composites and their adsorption performance for Fe3+.By adjusting the concentrations of DA and SA,the regu-latory effects on the crystal phase,microstructure,and particle size distribution of calcium carbonate were systematically studied,and the ad-sorption performance and cycling stability of the two composites for Fe3+were compared.The results showed that the adsorption behavior of DA-CaCO3 conformed to the Freundlich isothermal adsorption model,indicating its heterogeneous surface and adsorption dominated by multi-layer physisorption and weak chemical interactions with Fe3+.In contrast,SA-CaCO3 better followed the Langmuir isothermal adsorption mod-el,suggesting relatively uniform surface sites and a monolayer chemisorption process dominated by chelation,with a theoretical maximum ad-sorption capacity of 515.36 mg/g.Cycling experiments further showed that SA-CaCO3 maintained a removal rate above 80%towards Fe3+after 5 times of adsorption-desorption cycles,demonstrating a good regeneration stability.关键词
多巴胺/海藻酸钠/碳酸钙/Fe3+吸附Key words
dopamine/sodium alginate/calcium carbonate/Fe3+adsorption分类
轻工纺织引用本文复制引用
焦欣烨,蒋学,田秀枝,杜依纯,肖嘉乐,向钟,李宇航..碳酸钙复合材料的制备及其对Fe3+的吸附研究[J].中国造纸,2026,45(4):180-188,9.基金项目
陕西科技大学自然科学前沿研究基金(2020XSGG-07) （2020XSGG-07）
陕西省重点研发计划(2022GY-278) （2022GY-278）
陕西省自然科学基金(2023-JC-YB-104) （2023-JC-YB-104）
广西清洁化制浆造纸与污染控制重点实验室开放基金(2023GXZZKF36). （2023GXZZKF36）
