Abstract
Volatile Organic Compounds (VOCs) are among the most toxic chemicals which are detrimental to humans and environment. There is a significant need of fully satisfactory method for removal of VOCs. There are several methods including physical, chemical and biological treatments available to remove VOCs by either recovery or destruction. The aim of the present study is to summarize the available methods for VOC removal; trying to find a promising method among the available techniques. A wide range of VOCs can be treated biologically in which it offers advantages over more traditional processes including lower operating and capital costs and a smaller carbon footprint. However, due to a complex nature and diversity of VOCs it is hard to find a simple and promising method. Treatment still requires more research to solve the associate problems with available VOC elimination techniques.
Highlights
INTRODUCTIONContradictory lowering NOx at constant Volatile Organic Compounds (VOCs) concentrations predicts increased peak ozone concentrations to the ridge line
The reactions represented by Equation 1, involve Volatile Organic Compounds (VOCs) oxidation with NOx, hydroxyl catalysing some of the key reactions including other chemical compounds
As the wide range of VOCs implies a broad range of reaction rates, Commission for Europe (UNECE) and U.S VOCs are capable of long range distribution and Environmental Protection Agency (EPA)
Summary
Contradictory lowering NOx at constant VOC concentrations predicts increased peak ozone concentrations to the ridge line. This is due to more hydroxyl radicals available to react with VOCs due to reduced NOx-hydroxyl reactions. Indoor levels of VOC can be regulated by selecting low-emission materials for furnishing, cleaning and construction. This approach is impractical as many of the materials emitting VOCs are considered standard fixtures and attempting to replace them could prove costly. In the present study we summarize the available methods for VOCs removal; try to find a promissing technique
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