化工进展2023，Vol.42Issue(12)：6631-6640,10.DOI:10.16085/j.issn.1000-6613.2023-0201
石墨化生物质炭对磺胺甲(噁)唑的吸附性能
Adsorption performance of sulfamethoxazole by graphitized biochar
摘要
Abstract
The graphitized biochar WSC600K-B was prepared using waste walnut shell as raw material and KOH as modifier.The material was characterized by SEM,TEM,BET,XRD and Raman spectrum.The adsorption performance and mechanism of sulfamethoxazole(SMX)by WSC600K-B were investigated.The results showed that after activated by KOH,the surface of WSC600K-B presented orderly graphite lattice articles,the corresponding ID/IG was 1.037,and the degree of graphitization was high.The pore structure of WSC600K-B with honeycomb briquette shape was greatly improved,the pore was uniformly distributed,and the specific surface area increased to 733.64m2/g.At room temperature and pH=5,the removal rate of 50mg/L SMX by 0.25g/L WSC600K-B could reach 94.28%,and the adsorption capacity was 203.64mg/g.The adsorption process was significantly affected by pH and coexisting ions.The higher the pH value,the lower the adsorption efficiency.Coexisting ions inhibited the adsorption process.The adsorption process was in accordance with the second-order kinetic model and the Freundlich isothermal model,which was a multi-molecular layer chemical adsorption.Pore filling,π-π stacking,hydrogen bonding,hydrophobic interaction,and electrostatic interaction occurred during the reaction and the adsorption behavior was a spontaneous exothermic reaction.关键词
石墨化/核桃壳/生物质炭/磺胺甲(噁)唑/吸附Key words
graphitization/walnut shell/biochar/sulfamethoxazole/adsorption分类
建筑与水利引用本文复制引用
马丽然,张彦平,李芬,李一兵,马行迪..石墨化生物质炭对磺胺甲(噁)唑的吸附性能[J].化工进展,2023,42(12):6631-6640,10.基金项目
国家自然科学基金(22278100) （22278100）
大学生创新创业训练计划(X202210080025). （X202210080025）
