农作物废弃物活性炭的制备及吸附性能研究  

Preparation of activated carbon from agricultural waste and study on its adsorption

作　　者：徐先阳[1] 黄维秋[1] 高志芳[1] 张齐正 王兆利[1] 王翊红 李丽[1] 

机构地区：[1]常州大学江苏省油气储运重点实验室,常州213016

出　　处：《化工新型材料》2016年第8期257-259,共3页New Chemical Materials

基　　金：江苏省高校"青蓝工程"资助项目(SCZ1409700002);江苏省科技成果转化专项资金项目(BA2015166);常州市科技支撑计划(工业)(CE20150085)

摘　　要：以毛豆秸秆、茄子秸秆为原料,KOH为活化剂制备活性炭。采用正交实验对活性炭的制备工艺进行了优化,并研究了该活性炭对正己烷蒸气的吸附、解吸特性。实验结果表明:毛豆秸秆活性炭吸附性能优于茄子秸秆活性炭;毛豆秸秆活性炭最佳制备条件为炭化温度450℃、碱炭质量比为1、活化时间90min、活化温度750℃,此条件下对正己烷蒸气的吸附率为60.44%;茄子秸秆活性炭的最佳制备条件为炭化温度450℃、碱炭质量比为5、活化时间60min、活化温度650℃,此条件下对正己烷蒸气的吸附率为55.60%;二者的吸附率均达到较高水平;随实验次数增加,2种活性炭对正己烷的解吸率升高,而吸附率降低。Activated carbons were prepared from soy bean straw and eggplant straw using KOH as activator. The preparation process was optimized by orthogonal experiments, and their characterization of adsorption and desorption for hexane vapor were studied. The experimental results showed that the adsorption property of activated carbon from soy bean straw was better than that of eggplant straw. The best preparation conditions of soy bean straw were obtained：carboniza- tion temperature at 450℃ ,alkali activated carbon ratio of 1 to 1 ,activation for 90min at 750℃. The best preparation condi- tions of eggplant straw were obtained; carbonization temperature at 450℃ ,alkali activated carbon ratio of 5 to 1, activation for 60rain at 650℃. At the optimal preparation conditions,the n-hexane vapor adsorption rate of the activated carbon from soy bean straw was 60.44% ,the n-hexane vapor adsorption rate of the activated carbon from eggplant straw was 55. 60%, their adsorption rates reached a higher level. With the experiment times increasing, the hexane vapor desorption rates of two activated carbons increased and the adsorption rates decreased.

关 键 词：毛豆秸秆 茄子秸秆 活性炭 吸附 解吸 

分 类 号：X712[环境科学与工程—环境工程] TQ424.1[化学工程]