摘要
以啤酒厂脱水后污泥(BS)为原材料制备了污泥质生物炭,探究了该污泥质生物炭对2,4-二氯苯酚的吸附效能、等温吸附曲线及吸附动力学特征,并采用扫描电镜(SEM)对其进行了表征分析。结果表明:BS生物质炭吸附2,4-二氯苯酚的最佳条件为:BS生物质炭的投加量为2. 0 g/L、初始溶液pH值为8. 0时,2,4-二氯苯酚的去除率最高可达55. 7%,该吸附过程符合Freundlich等温吸附模拟与二级动力学。通过SEM分析可知:BS生物炭表面呈现大量的微孔结构,为2,4-二氯苯酚的吸附创造了良好的条件。
Sludge-derived biochar was prepared using raw brewer’s dewatered sludge( BS). Adsorption properties,adsorption isothermal curve,and adsorption kinetics of 2,4-dichlorophenol on the sludge-derived biochar were investigated. In addition,the surface features of the sludge-derived biochar were described by the scanning electron microscope( SEM). The experimental results showed that the optimal conditions for the adsorption of 2,4-dichlorophenol were as follows: the dosage of BS biochar 2. 0 g/L and the pH of the solution 8. 0. Then the highest removal rate was 55. 7%. This adsorption process fit well with Freundlich isothermal adsorption model and the second-order kinetics. According to the SEM analysis,sludge-derived biochar had a large number of micropore structures on its surface,thus creating favorable condition for the adsorption of 2,4-dichlorophenol.
作者
林旭萌
宿程远
黄纯萍
赵力剑
陈孟林
黄智
LIN Xu-meng;SU Cheng-yuan;HUANG Chun-ping;ZHAO Li-jian;CHEN Meng-lin;HUANG Zhi(School of Environment and Resources, Guangxi Normal University, Guilin 541004, China;Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China)
出处
《环境工程》
CAS
CSCD
北大核心
2019年第8期154-158,87,共6页
Environmental Engineering
基金
广西自然科学基金项目(2017GXNSFAA198277)
广西师范大学博士科研启动基金项目(2016BQ003)
关键词
2-4二氯苯酚
污泥质生物炭
吸附动力学
等温吸附曲线
2,4-dichlorophenol
sludge-derived biochar
adsorption kinetics
adsorption isothermal curve
