摘要
以农业剩余物山竹果壳为原料,采用氢氧化钾(KOH)为活化剂制备活性炭。利用正交实验(L16(44))确定活性炭的最佳制备工艺。并以活性炭为吸附剂,采用单因素变量法,研究Cu(Ⅱ)初始浓度、溶液pH值、吸附温度、吸附时间对活性炭吸附性能的影响,探究其等温吸附过程和吸附动力学特征。结果表明:Langmuir模型能更好的描述活性炭对Cu(Ⅱ)的吸附过程,最大吸附量为18.15 mg/g;吸附动力学可用准二级动力学方程来拟合,其相关系数为0.9987。
Active carbon was prepared by potassium hydroxide(KOH)from mangosteen shell.Orthogonal test(L16(44))was used to determine the optimal preparation technology of activated carbon.The activated carbon was used as an adsorbent to remove Cu(Ⅱ)from aqueous solution by single-factor variable experiments.The effects of initial heavy metal concentration,pH value,temperature,adsorption time on the removal of cupric ion were investigated.Isotherm adsorption and kinetic characteristics were also discussed.The results showed that the Langmuir model can better describe the activated carbon for Cu(Ⅱ)adsorption process,the maximum adsorption quantity was 18.15 mg/g.The adsorption kinetics can be fitted by a quasi-second-order kinetic equation with a correlation coefficient of 0.9987.
作者
郝梦荻
何应春
张旺全
盛显良
HAO Meng-di;HE Ying-chun;ZHANG Wang-quan;SHENG Xian-liang(College of Material Science and Art Design,Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010018;College of Science,Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010018;Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization,Inner Mongolia Hohhot 010018,China)
出处
《广州化工》
CAS
2020年第9期87-91,153,共6页
GuangZhou Chemical Industry
关键词
山竹果壳
活性炭
正交实验
铜离子
吸附
mangosteen shell
activated carbon
orthogonal experiment
cupric ion
adsorption
