皮革科学与工程2024，Vol.34Issue(6)：1-8,8.DOI:10.19677/j.issn.1004-7964.2024.06.001
蛋白-多糖-Cr(Ⅲ)络合物的形成及其脱铬机制
Formation and Chromium Removal Mechanism of Protein-polysaccharide-Cr(Ⅲ)Complexes
摘要
Abstract
In this study,sodium alginate(SA)and bovine serum albumin(BSA)were utilized to mimic polysaccharides and proteins during the leather tanning wastewater treatment.This research examined the characteristics and stability of various complexes formed by the interaction of polysaccharides,proteins,and Cr(Ⅲ).It was discovered that the molecular weights of the SA-BSA-Cr(Ⅲ)complexes were considerably lower than those of the separate ligands,suggesting that the complexes predominantly arise from intramolecular coordination.A shift in the isoelectric points of the complexes towards a neutral pH enhanced neutralization precipitation and flocculation sedimentation processes.However,the maximum chromium removal efficiency achieved was only 85.62％.Introducing ultrasonic pretreatment in combination with a reflocculation agent increased the chromium removal efficiency of the complexes to over 98％,with the process remaining unaffected by pH variations.The findings of this investigation offer a theoretical and practical foundation for the enhanced removal of chromium in non-neutral environments.关键词
制革废水/Cr(Ⅲ)络合物/絮凝沉淀/超声预处理/海藻酸钠/牛血清白蛋白Key words
tanning wastewater/Cr(Ⅲ)complexes/flocculation sedimentation/ultrasonic pretreatment/sodium alginate/bovine serum albumin分类
资源环境引用本文复制引用
马宏瑞,杜佳怡,党靖雯,郝永永,朱超..蛋白-多糖-Cr(Ⅲ)络合物的形成及其脱铬机制[J].皮革科学与工程,2024,34(6):1-8,8.基金项目
国家自然科学基金(22076113) （22076113）
