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.
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.
[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.
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