Adsorption of Organic Vapors on Carbon and Resin
Publication: Journal of Environmental Engineering
Volume 111, Issue 4
Abstract
A comparative study was conducted on the adsorption/desorption of organic vapors (toluene and para‐xylene) on a synthetic resin (XAD4) and activated carbon using a gravimetric method involving the use of a quartz spring expansion. While the two sorbents can effectively remove the organic vapors, it was observed that activated carbon adsorbs more organic vapor than synthetic resin at low concentrations; but at higher industrial level concentrations, the resin adsorbs more organic vapor. The rate of adsorption is higher than that of desorption for the two organic vapors regardless of the sorbent. However, the resin showed higher reversible adsorption. The effective intraparticle diffusion coefficients () were observed to be strongly dependent on the solute concentration. As such, rate studies ought to be conducted around the expected concentration range that is expected during application. Pore diffusion dominated the adsorption/desorption of both organic vapors on the XAD4 resin. For the carbon system, pore diffusion dominated the adsorption but surface diffusion contributed to the desorption process. This is believed to be due to higher interaction of the solutes with activated carbon.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 111 • Issue 4 • August 1985
Pages: 487 - 500
Copyright
Copyright © 1985 ASCE.
History
Published online: Aug 1, 1985
Published in print: Aug 1985
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