摘要
采用N2低温吸附/脱附、Boehm滴定对活性炭的孔结构和表面含氧官能团进行表征,研究微波热处理对活性炭的吸附性能的影响。用Langmuir和Freundlich吸附等温模型对活性炭的吸附性能进行评价,比较了溶液pH和吸附温度对改性前后活性炭的吸附能力影响,运用准一次方动力学模型和准二次方动力学模型对2种活性炭的吸附动力学进行研究。结果表明:微波热处理改性活性炭可提高活性炭对苯酚的吸附性能。
To study the effect of microwave pyrolysis on the adsorption capacity of activated carbon,the adsorbents were characterized by N2 adsorption /desorption and Boehm titration.The Langmuir and Freundlich adsorption models were used to evaluate the adsorption capacity of carbons.The effect of solution pH and temperature were also investigated.The pseudo-firstorder model and pseudo-second-order model were applied to study the adsorption kinetic of parent and modified carbon.The results indicated that microwave pyrolysis improved the adsorption capacity of activated carbon for phenol.
出处
《环境工程》
CAS
CSCD
北大核心
2014年第9期36-39,共4页
Environmental Engineering
基金
四川省教育厅重点项目(11ZA122
12ZA264)
自贡市科技局重点项目
关键词
微波
活性炭
表面性质
吸附
苯酚
microwave
activated carbon
surface properties
adsorption
phenol
