TY - JOUR
T1 - Adsorption characteristics of acetone, chloroform and acetonitrile on sludge-derived adsorbent, commercial granular activated carbon and activated carbon fibers
AU - Tsai, Jiun Horng
AU - Chiang, Hsiu Mei
AU - Huang, Guan Yinag
AU - Chiang, Hung Lung
N1 - Funding Information:
The authors express their sincere thanks to the National Science Council, Taiwan, ROC (Contract NSC 94-2211-E-039-07 and 95-2211-E-039-012) for funding this study.
PY - 2008/6/15
Y1 - 2008/6/15
N2 - The adsorption characteristics of chloroform, acetone, and acetonitrile on commercial activated carbon (C1), two types of activated carbon fibers (F1 and F2), and sludge adsorbent (S1) was investigated. The chloroform influent concentration ranged from 90 to 7800 ppm and the acetone concentration from 80 to 6900 ppm; the sequence of the adsorption capacity of chloroform and acetone on adsorbents was F2 > F1 ∼ C1 ∼ S1. The adsorption capacity of acetonitrile ranged from 4 to 100 mg/g, corresponding to the influent range from 43 to 2700 ppm for C1, S1, and F1. The acetonitrile adsorption capacity of F2 was ∼20% higher than that of the other adsorbents at temperatures <30 °C. The Freundlich equation fit the data better than the Langmuir and Dubinin-Radushkevich (D-R) equations. The adsorption rate of carbon fibers is higher than that of the other adsorbents due to their smaller fiber diameter and higher surface area. The micropore diffusion coefficient of VOC on activated carbon and sludge adsorbent was ∼10-4 cm2 s-1. The diffusion coefficient of VOC on carbon fibers ranged from 10-8 to 10-7 cm2 s-1. The small carbon fiber pore size corresponds to a smaller diffusion coefficient.
AB - The adsorption characteristics of chloroform, acetone, and acetonitrile on commercial activated carbon (C1), two types of activated carbon fibers (F1 and F2), and sludge adsorbent (S1) was investigated. The chloroform influent concentration ranged from 90 to 7800 ppm and the acetone concentration from 80 to 6900 ppm; the sequence of the adsorption capacity of chloroform and acetone on adsorbents was F2 > F1 ∼ C1 ∼ S1. The adsorption capacity of acetonitrile ranged from 4 to 100 mg/g, corresponding to the influent range from 43 to 2700 ppm for C1, S1, and F1. The acetonitrile adsorption capacity of F2 was ∼20% higher than that of the other adsorbents at temperatures <30 °C. The Freundlich equation fit the data better than the Langmuir and Dubinin-Radushkevich (D-R) equations. The adsorption rate of carbon fibers is higher than that of the other adsorbents due to their smaller fiber diameter and higher surface area. The micropore diffusion coefficient of VOC on activated carbon and sludge adsorbent was ∼10-4 cm2 s-1. The diffusion coefficient of VOC on carbon fibers ranged from 10-8 to 10-7 cm2 s-1. The small carbon fiber pore size corresponds to a smaller diffusion coefficient.
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U2 - 10.1016/j.jhazmat.2007.11.065
DO - 10.1016/j.jhazmat.2007.11.065
M3 - Article
C2 - 18180103
AN - SCOPUS:43049139125
SN - 0304-3894
VL - 154
SP - 1183
EP - 1191
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1-3
ER -