摘要
以玉米秸秆为原料,通过热解制备生物炭,分析吸附温度、吸附时间和溶液p H值对废水中Cd^(2+)的吸附效果。研究结果表明:在300℃和600℃条件下热解制备玉米秸秆生物炭T300和T600,T300生物炭对废水中Cd^(2+)的吸附效果好于T600。当温度为80℃,吸附时间为60 min,溶液pH为7.0时,T300生物炭对废水中Cd^(2+)的去除率最大,达到95.77%;在25℃条件下,当吸附时间为40 min,溶液pH为7.0时,T600生物炭对废水中Cd^(2+)的去除率最大,为81.66%。该研究成果将为重金属废水的处理提供技术支撑,同时也可以为生物炭材料制备提供科学依据。
Biochar was prepared by pyrolysis with corn stalk as raw material,and the adsorption effect of adsorption temperature,adsorption time and pH value on Cd^(2+)in wastewater was analyzed.The results showed that corn stalk biochar T300 and T600 were prepared by pyrolysis at 300℃and 600℃,and the adsorption effect of T300 biochar on Cd^(2+)in wastewater was better than that of T600.When the temperature was 80℃,the adsorption time was 60 min,and the solution pH was 7.0,the maximum Cd^(2+)removal rate of T300 biochar reached 95.77%.In the condition of 25℃,when the adsorption time is 40min and the solution pH is 7.0,the maximum Cd^(2+)removal rate of T600 biochar is 81.66%.The research results will provide technical support for the treatment of heavy metal wastewater,and also provide scientific basis for the preparation of biochar materials.
作者
薛宏
冀鑫毅
刘家奇
贾怀增
陈佳伟
来雪慧
Xue Hong;Ji Xinyi;Liu Jiaqi;Jia Huaizeng;Chen Jiawei;Lai Xuehui(Department of Environment and Safety Engineering,Taiyuan Institute of Technology,Taiyuan Shanxi 030008)
出处
《山西化工》
2023年第3期26-27,30,共3页
Shanxi Chemical Industry
基金
太原工业学院大学生创新创业项目(GK2021138)。
