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J Hazard Mater

Title:		Removal of benzene and methyl ethyl ketone vapor: comparison of hypercrosslinked polymeric adsorbent with activated carbon
Author(s):		Long C; Li Y; Yu W; Li A;
Address:		"State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Road, Nanjing 210046, China. clong@nju.edu.cn"
Journal Title:		J Hazard Mater
Year:		2012
Volume:		20111213
Issue:
Page Number:		251 - 256
DOI:		10.1016/j.jhazmat.2011.12.010
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"A novel hypercrosslinked polymeric adsorbent (HY-1) with high surface area and specific bimodal pore size distribution in the regions of micropore (0.5-2.0 nm) and meso-macropore (30-70 nm) was prepared. Adsorption properties of benzene and methyl ethyl ketone (MEK) vapors onto HY-1 were investigated and compared with a commercial microporous activated carbon (m-GAC). The equilibrium adsorption data showed that the adsorption capacities of benzene and MEK on HY-1 were larger than those of m-GAC at the higher relative pressure. The Dubinin-Radushkevich (D-R) equation was found to fit the experimental data well. The isosteric enthalpy of adsorption for benzene and MEK were calculated. The m-GAC exhibited much higher values of DeltaH(st) for the VOCs than HY-1 at the whole loading studied, which can lead to significant temperature rises during the adsorption step. The results of dynamic experiments revealed that HY-1 had a good dynamic adsorption capacity with a longer breakthrough time and shorter length of mass transfer zone due to its specific bimodal property. Therefore, HY-1 will be a particularly efficient and competitive adsorbent for VOCs recovery, especially at medium-high concentrations"
Keywords:		Adsorption Benzene/*isolation & purification Butanones/*isolation & purification Carbon/*chemistry Polymers/*chemistry Thermodynamics Volatile Organic Compounds/*chemistry;
Notes:		"MedlineLong, Chao Li, Ying Yu, Weihua Li, Aimin eng Comparative Study Research Support, Non-U.S. Gov't Netherlands 2011/12/30 J Hazard Mater. 2012 Feb 15; 203-204:251-6. doi: 10.1016/j.jhazmat.2011.12.010. Epub 2011 Dec 13"