摘要
通过化学活化法制备芝麻秸秆活性炭,然后对亚甲基蓝进行了吸附实验。考察了活性炭的投加量、初始浓度、吸附时间对吸附过程的影响及表征分析。结果表明:碱炭比为2∶1时,制备得到的活性炭吸附性能最好。初始浓度为40 mg/L,吸附时间为90 min,投加量为20 mg时,去除率达到最大值98.49%。经过准一级动力学和准二级动力学相关系数得出,芝麻秸秆活性炭吸附亚甲基蓝染料的过程为化学吸附。
Sesame straw activated carbon is prepared by chemical activation method,and methylene blue is adsorbed.The influence and characterization analysis of activated carbon dosage,initial concentration,adsorption time on the adsorption process are investigated.The results show that when the alkali-carbon ratio is 2∶1,the adsorption performance of activated carbon is the best.When the initial concentration is 40 mg/L,the adsorption time is 90 min,and the dosage is 20 mg,the removal rate reaches the maximum 98.49%.The adsorption process of methylene blue dye on sesame straw activated carbon is chemical adsorption by comparing the correlation coefficient of first order kinetics and second order kinetics.
作者
张建
周威远
王娅娅
ZHANG Jian;ZHOU Weiyuan;WANG Yaya(College of Chemistry and Environmental Science , Yili Normal University , Yi′ning 835000 , China)
出处
《河南化工》
CAS
2022年第2期25-28,共4页
Henan Chemical Industry
基金
伊犁师范大学校级一般项目(2019YSDX027)。
关键词
芝麻秸秆
活性炭
吸附
亚甲基蓝
化学活化
sesame straw
activated carbon
adsorption
methylene blue
chemical activation
