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Emerging Control Technologies for Volatile Organic Compounds

IR@NEERI: National Environment Engineering Research Institute

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Title Emerging Control Technologies for Volatile Organic Compounds
Creator Parmar, G R
Rao, N N
Subject Environmental Pollution
Description Environmental problems associated with volatile organic compounds (VOCs) in the atmosphere have provided the driving force for sustained fundamental and applied research in the area of environmental remediation. Conventional methods currently used to treat VOCs include incineration, condensation, adsorption, and absorption. Incineration and condensation are cost-effective only for moderate to high VOC concentrations. Adsorption and absorption do not destroy VOCs but simply transfer them to another medium. The humid gas stream can plug the condenser and can fill up the adsorption site of the adsorbent. However, none of these methods are cost-effective for the treatment of gas streams with low to moderate concentration and having large numbers of compounds, as the recovery and reuse of the compounds is not economically feasible. A host of alternative remediation technologies, which offer a number of advantages over conventional technologies, are emerging. These include treatment of VOCs with spark-generated carbon aerosol particles, negative air ions treatment, treatment using mesoporous chromium oxide and silica fiber matrix, electrical discharge treatment, electron beam bombardment, and ultraviolet (UV) photooxidation mediated by heterogeneous photocatalyst particles. This review discusses these emerging technologies against the backdrop of conventional approaches for VOC treatment.
Publisher Taylor & Francis
Date 2009
Type Article
Format application/pdf
Identifier http://neeri.csircentral.net/94/1/parmar_gr.pdf
Parmar, G R and Rao, N N (2009) Emerging Control Technologies for Volatile Organic Compounds. Critical Reviews in Environmental Science and Technology, 39. pp. 41-71.
Relation http://neeri.csircentral.net/94/