摘要
通过锆改性绿色友好材料凹凸棒土制备锆基吸附材料去除内分泌干扰物,对其进行一系列测试表征。结果表明,在锆基改性材料表面存在具有功能基团ZrO2,其结构稳定,改性后材料的表面积和总孔容积分别提升3.8倍和2.2倍,在pH为1.5时,电位由负变正,该性质的改变有利于对水体中内分泌干扰物的去除。将锆基改性材料用于4种常见的内分泌干扰物(双酚A、17β-雌二醇、17α-雌二醇、己烷雌酚)的吸附去除研究。结果表明,在pH为1.5,吸附剂投加量为15 mg,内分泌干扰物质量浓度为0.5μg·mL^(-1),吸附30 min后去除率可达100%,该材料经过重复利用4次,其对于内分泌干扰物的去除率可达60%以上。4种污染物的吸附过程符合准二级动力学模型和Langmuir等温吸附模型。
This study focuses on the preparation of zirconium-based adsorbent materials using zirconium-modified bumpy clay,a green and friendly material,to remove endocrine disruptors,and a series of tests were conducted for characterization.The characterization results indicate that the surface of the zirconium-based modified material possesses structurally stable ZrO 2 functional groups.The surface area and total pore volume of the modified material increased by factors of 3.8 and 2.2,respectively.The Zeta potential shifts from negative to positive at pH=1.5,which was favorable for endocrine disruptor removal.The zirconium-modified material was tested for the adsorption and removal of four common endocrine disruptors(bisphenol A,17β-estradiol,17α-estradiol,and hexestrol).The results showed that under the conditions of pH 1.5,adsorbent dosage of 15 mg,endocrine disruptor mass concentration of 0.5μg·mL^(-1),the removal rate reached 100%after 30 minutes of adsorption.After four reuse cycles,the removal rate of endocrine disruptors could still reach over 60%.The adsorption processes of the four pollutants conformed to the quasi-secondary kinetic model and Langmuir isothermal adsorption model.
作者
黄培颖
刘俊彬
李琳睿
陈日耀
刘键熙
HUANG Peiying;LIU Junbin;LI Linrui;CHEN Riyao;LIU Jianxi(College of Environmental and Resource Sciences,College of Carbon Neutral Modern Industry,Fujian Normal University,Fuzhou 350117,China;Fujian Key Laboratory of Pollution Control&Resource Reuse,Fuzhou 350117,China)
出处
《福建师范大学学报（自然科学版）》
CAS
北大核心
2024年第2期125-133,共9页
Journal of Fujian Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(21605020)
福建省科技厅自然科学基金资助项目(2022J01651,2016J05027)。
关键词
内分泌干扰物
凹凸棒土
吸附
锆改性
新污染物
水污染控制
去除
endocrine disruptors
attapulgite
adsorption
zirconium modification
new pollutants
water pollution control
removal
