化工进展2024，Vol.43Issue(6)：3386-3397,12.DOI:10.16085/j.issn.1000-6613.2023-0727
葡甲胺功能化rGO/MWCNTs-OH复合气凝胶的制备及对硼的吸附
Preparation of methylglucamine-functionalized rGO/MWCNTs-OH composite aerogels and its adsorption of boron
摘要
Abstract
Aerogels have promising applications in the field of adsorption.In this study,methylglucamine-functionalized reduced graphene oxide/hydroxylated carbon nanotube aerogels were prepared by hydrothermal synthesis and freeze-drying method for boron removal from salt lake brines.The adsorption behavior of the adsorbent on boron in aqueous solution was investigated,and the adsorption process was in accordance with the pseudo-second-order kinetic model and Freundlich isothermal adsorption model.The maximum adsorption amount was 33.64mg/g when the initial boron concentration was 1000mg/L,pH was 10,the adsorption time was 9h and the temperature was 298K.The response surface method could predict the experimental results and optimize the reaction conditions,and the boron adsorption amount was 32.91mg/g under the optimal conditions.The adsorption mechanism analysis showed that the adsorption process mainly consisted of the complexation of the—OH functional group on the adsorbent with B.The adsorbent still had a high adsorption capacity for B after three adsorption-desorption experiments.The adsorbent had good resistance to coexisting salt interference and good adsorption performance in real brine with an adsorption capacity of 23.87mg/g.This aerogel was potentially valuable for boron extraction from salt lake brines and wastewater.关键词
葡甲胺/氧化石墨烯/碳纳米管/硼/响应面法Key words
methylglucamine/graphene oxide/carbon nanotubes/boron/response surface methodology分类
化学化工引用本文复制引用
潘彤彤,崔香梅..葡甲胺功能化rGO/MWCNTs-OH复合气凝胶的制备及对硼的吸附[J].化工进展,2024,43(6):3386-3397,12.基金项目
青海省应用基础研究计划(2019-ZJ-7044). （2019-ZJ-7044）
