Modifying coconut shell activated carbon for improved purification of benzene from volatile organic waste gas

被引：46
|
作者：
Deng, Zhihua [1 ,2 ]
Deng, Qing [1 ]
Wang, Linqi [1 ]
Xiang, Ping [1 ]
Lin, Jing [3 ]
Murugadoss, Vignesh [4 ]
Song, Gang [5 ]
机构：
[1] Southwest Forestry Univ, Key Lab Ecol Environm Evolut & Pollut Control Mou, Coll Ecol & Environm, Kunming 650233, Yunnan, Peoples R China
[2] Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sou, Minist Educ, Kunming 650233, Yunnan, Peoples R China
[3] Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Peoples R China
[4] Engn Multifunct Composites Nanotech LLC, Adv Mat Div, Knoxville, TN 37934 USA
[5] Zhengzhou Univ, Natl Engn Res Ctr Adv Polymer Proc Technol, Minist Educ, Key Lab Mat Proc & Mold, Zhengzhou 450001, Peoples R China
来源：
ADVANCED COMPOSITES AND HYBRID MATERIALS | 2021年 / 4卷 / 03期
关键词：
Modified coconut shell-activated carbon; Benzene; Adsorption; Kinetic model; ADSORPTION;
D O I：
10.1007/s42114-021-00273-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, coconut shell-activated carbon was modified by the impregnation method. The best-modified reagent was 1% KOH. Under this condition, acetone's equilibrium adsorption capacity by modified activated carbon (1% KOH-AC) reached 0.96 mg g(-1). The effects of inlet time, inlet flow rate, inlet concentration, and adsorption temperature on the removal efficiency were discussed. With the increase of intake time, the removal efficiency of benzene by coconut shell-activated carbon kept 100% at first and then decreased. The higher the inlet flow rate and concentration, the worse the benzene removal. The lower the operating temperature was, the better the benzene removal was. The purification and adsorption mechanisms were explored by BET and FTIR. The results showed that the Bangham kinetic model fitted the equilibrium adsorption capacity of benzene best.
引用
收藏
页码：751 / 760
页数：10
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