Adsorption characteristics of acetone, chloroform and acetonitrile on sludge-derived adsorbent, commercial granular activated carbon and activated carbon fibers

Jiun Horng Tsai, Hsiu Mei Chiang, Guan Yinag Huang, Hung Lung Chiang

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134 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1183-1191
Number of pages9
JournalJournal of Hazardous Materials
Volume154
Issue number1-3
DOIs
Publication statusPublished - 2008 Jun 15

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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