标题：Tubular activated carbons made from cotton stalk for dynamic adsorption of airborne toluene

作者： Hu, LJ (Hu, Lijuan); Peng, Y (Peng, Ying); Wu, F (Wu, Feng); Peng, SZ (Peng, Shanzhi); Li, JJ (Li, Jinjun); Liu, ZZ (Liu, Zizheng)

来源出版物：JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS卷：80页码: 399-405 DOI：10.1016/j.jtice.2017.07.029 出版年： NOV 2017

摘要：Monolithic tubular activated carbons were prepared from cotton stalks by chemical activation using phosphorous acid and zinc chloride and referred to as AC-P and AC-Z, respectively. These tubular carbons can be stacked into a honeycomb-like configuration, which has potential in the emission control of volatile organic compounds. Dynamic adsorption of toluene on the tubular activated carbons was tested. AC-P had a specific surface area of 1256 m(2)/g, 73.4% of which was contributed by mesopores; while AC-Z had a specific surface area of 795 m2/g, 60% of which was contributed by micropores. FTIR spectra revealed that AC-Z possessed less oxygen-containing polar groups than AC-P, which contributed to its higher hydrophobicity. TG analysis also suggested that less water was adsorbed on AC-Z. At a flow rate of 150 mL/min and toluene concentration of 1000 ppm, the dynamic toluene adsorption capacity of AC-P was as high as 328 mg/g under dry conditions owing to its high specific surface area; however, it decreased to only 94 mg/g under wet conditions (80% relative humidity, 25 degrees C) due to its hydrophilicity. In contrast, AC-Z having high hydrophobicity showed a dynamic toluene adsorption capacity of 258 mg/g under dry conditions, which remained at 221 mg/g under wet conditions. (C) 2017 Taiwan Institute of Chemical Engineers.

入藏号： WOS:000415769200046

文献类型：Article

语种：English

作者关键词：Cotton stalk; Chemical activation; Monolithic activated carbon; Adsorption; Toluene; Volatile organic compounds

扩展关键词： VOLATILE ORGANIC-COMPOUNDS; HONEYCOMB MONOLITHS; CHEMICAL ACTIVATION; MESOPOROUS SILICA; AQUEOUS-SOLUTIONS; METHYLENE-BLUE; SURFACE-AREA; WATER-VAPOR; REMOVAL; BENZENE

通讯作者地址：Li, JJ (reprint author), Wuhan Univ, Hubei Key Lab Biomass Resources, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

Liu, ZZ (reprint author), Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China.

电子邮件地址：lijinjun@whu.edu.cn; lzz2015@whu.edu.cn

地址：

[Hu, Lijuan; Peng, Ying; Wu, Feng; Peng, Shanzhi; Li, Jinjun] Wuhan Univ, Hubei Key Lab Biomass Resources, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

[Liu, Zizheng] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China.

影响因子：4.217