湿法冶金2024，Vol.43Issue(5)：543-550,8.DOI:10.13355/j.cnki.sfyj.2024.05.010
聚乙烯亚胺功能化的生物炭气凝胶对铀的吸附性能研究
Adsorption Properties of Polyethylene Imine-functionalized Biochar Aerogel for Uranium
摘要
Abstract
The synthesis of a polyethylene imine-functionalized biochar aerogels(LSBC-CTS/PEI)using lotus seed powder,chitosan and polyethylene imine as materials,and used for adsorption of U(Ⅵ)in wastewater was studied.The results show that LSBC-CTS/PEI exhibit a looser structure with interconnections,and contains very rich amine-based functional groups,which can provide more adsorption sites for U(Ⅵ)coordination.The selective adsorption of U(Ⅵ)by LSBC-CTS/PEI is greatly affected by pH.The adsorption is mainly composed of single-layer chemisorption,which belongs to a spontaneous endothermic process,and is more suitable for description by quasi-second-order kinetics and Langmuir isothermal adsorption model.The selectivity of LSBC-CTS/PEI to uranium is 84.91％,and the maximum adsorption capacity is 533.89 mg/g.The adsorption material has high adsorption capacity of uranium,good selectivity,and convenient separation of solid and liquid,so it has the certain value of application.关键词
铀(Ⅵ)/吸附/壳聚糖/聚乙烯亚胺/功能化/生物炭/气凝胶Key words
uranium(Ⅵ)/adsorption/chitosan/polyethylene imine/functionalization/biochar/aerogel分类
化学化工引用本文复制引用
冯子豪,吕建奇,汪洋,任奇,王云..聚乙烯亚胺功能化的生物炭气凝胶对铀的吸附性能研究[J].湿法冶金,2024,43(5):543-550,8.基金项目
国家自然科学基金地区科学基金项目(22366003) （22366003）
江西省自然科学基金面上项目(20224BAB203005). （20224BAB203005）
