环境工程学报2025，Vol.19Issue(1)：40-50,11.DOI:10.12030/j.cjee.202402071
β-环糊精基复合水凝胶吸附磷酸三(2-氯乙基)酯的效能与机制
Adsorption performance and mechanism of β-cyclodextrin based composite hydrogel towards tris(2-chloroethyl)phosphate
摘要
Abstract
A β-cyclodextrin-trimethylammonium chloride-acrylamide composite hydrogel(CDN-AM-CH)absorbent was successfully prepared by the ternary monomer copolymerization method to effectively remove the tri(2-chloroethyl)phosphate(TCEP),a kind of organophosphorus flame retardant.Both the adsorption performance of CDN-AM-CH to TCEP and the related mechanisms were investigated.The results showed that the prepared hydrogel absorbent illustrated a lamellar and gel network structure with the-NH2 group.Under the conditions of 25 ℃and 150 r·min-1,CDN-AM-CH had a maximum adsorption capacity of 126.26 mg·g-1 towards TCEP with an initial concentration of 200 mg·L-1.The adsorption equilibrium time was 8 h.The applicable pH range was wide within 3～11.Moreover,CDN-AM-CH still had a good TCEP adsorption performance in the presence of salinity and organic matter,and could still maintain 97.1％adsorption capacity after five adsorption-desorption cycles.In addition,for TCEP in actual polluted water bodies with more complex components,high adsorption amount by CDN-AM-CH also occurred.The mechanisms analysis showed that the main structure of cyclodextrin and-NH2 group in CDN-AM-CH played the dual roles of inclusion and hydrogen bonding during the adsorption process.关键词
β-环糊精/复合水凝胶/磷酸三(2-氯乙基)酯(TCEP)/吸附性能/包合作用/氢键Key words
β-cyclodextrin/composite hydrogel/tri(2-chloroethyl)phosphate(TCEP)/adsorption performance/inclusion/hydrogen bonding分类
环境科学引用本文复制引用
李俊仪,张达鑫,王毅力..β-环糊精基复合水凝胶吸附磷酸三(2-氯乙基)酯的效能与机制[J].环境工程学报,2025,19(1):40-50,11.基金项目
国家"十三五"重点研发计划"三峡库区面源污染植被削减过程与技术研究"资助项目(2017YFC0505303) （2017YFC0505303）
胜利油田分公司博士后资助项目(YKB2213) （YKB2213）
