硅酸盐通报2018，Vol.37Issue(4)：1160-1166,7.
硅烷偶联剂改性硅藻土及其去除水中As(Ⅴ)的研究
Modified Diatomite with Silane Coupling Agent and As(V)Removal
摘要
Abstract
The adsorbent for As(V)ion removal was prepared by using diatomite as matrix, γ-propylalkoxysilane(APES)as the modifier.The highest removal rate of 87.11% was observed at the optimal modification conditions: modified diatomite 3 g, APES 4 mL, pH =11, reaction time 6 h, reaction temperature 30 ℃.The scanning electron microscopy(SEM)observation showed that the diatomite matrix did not change before and after modification.The Fourier transform infrared spectroscopy (FT-IR)analysis proved the disappearance of hydroxyl group and the appearance of-NH2.Besides,the adsorption of As(V)ions on adsorbent obeys the Freundlich model and the pseudo second-order equation.关键词
γ-氨丙基三甲氧基硅烷/硅藻土/As(V)/吸附Key words
γ-propylalkoxysilane/diatomite/As(V)/adsorption分类
资源环境引用本文复制引用
李聪,解庆林,陈南春,钟溢健,梁效铭..硅烷偶联剂改性硅藻土及其去除水中As(Ⅴ)的研究[J].硅酸盐通报,2018,37(4):1160-1166,7.基金项目
国家自然科学基金(41662005,51564008) （41662005,51564008）
广西环境污染控制理论与技术重点实验室研究基金(001102216078) （001102216078）
广西科技攻关项目(桂科攻14124004-5-5) （桂科攻14124004-5-5）
