期刊
WATER SCIENCE AND TECHNOLOGY
卷 73, 期 8, 页码 2025-2030出版社
IWA PUBLISHING
DOI: 10.2166/wst.2016.046
关键词
adsorption; 4-chlorophenol; hard coal; low-cost adsorbent
The potential use of raw hard coals as low-cost adsorbents for the removal of 4-chlorophenol (4-CP) from aqueous solutions was examined. The effect of experimental parameters such as the pH and salt presence was evaluated. The kinetic studies showed the equilibrium time was found to be 2 h for all of the adsorbents and that the adsorption process followed the pseudo-second order kinetic model. The adsorption isotherms of the 4-CP on the hard coals were fitted to the Langmuir, Freundlich, Langmuir-Freundlich, Sips and Redlich-Peterson equations. Based on the results obtained, hard coals appear to be a promising adsorbent for the removal of some hazardous water pollutants, like 4-CP and related compounds.
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