Selection of appropriate adsorption technique for recovery of VOCs: an analysis

Adsorption of benzene, cyclohexane and hexane on ordered mesoporous carbon

“…Volatile organic compounds (VOCs) are a class of air pollutants in industrial processes and daily human consumption Parmar and Rao, 2009;He et al, 2012;Hernandez et al, 2003;Ghoshal and Manjare, 2002;Reguer et al, 2011;Gonzalez-Miquel et al, 2013). Because of their high vapor pressure and low boiling point, they are prone to be emitted into the atmosphere, causing great environmental problems because of their intrinsically hazardous properties.…”

“…Not only they are the main precursors of photochemical reaction in the atmosphere, inducing ozone destruction and photochemical smog, but they are also toxic toward human health, and may cause pathogenic, mutagenic and even fatal diseases (Wang et al, 2007;Parmar and Rao, 2009;He et al, 2012;Hernandez et al, 2003). Unfortunately, with the continuous development of industrialization in recent years, the emissions of VOCs have gradually increased to a new high level (Ghoshal and Manjare, 2002;Wu et al, 2011). In order to reduce the harmful effect of VOCs on the environment and humans, stringent regulations have already been enforced to limit further VOC emission.…”

“…Various kinds of methods, such as catalytic oxidation, adsorption, absorption, photocatalytic processes, and biological methods are employed for the abatement of VOCs (Wang et al, 2007;Parmar and Rao, 2009;He et al, 2012;Hernandez et al, 2003;Ghoshal and Manjare, 2002;Reguer et al, 2011;Gonzalez-Miquel et al, 2013). Among them, adsorption technology seems to be the preferred choice due to its great advantages of convenience and high efficiency (Hernandez et al, 2003;Ghoshal and Manjare, 2002;Reguer et al, 2011).…”

Removal of chlorinated organic volatile compounds by gas phase adsorption with activated carbon

“…Adsorption, absorption and condensation are the three most common non-destructive techniques for the removal/recovery of Cl-VOCs from gas streams [21][22][23][24]. Adsorption with activated carbon (AC) has been widely used for the removal of gaseous organic pollutants [25,26].…”

Toluene, Methanol and Benzaldehyde Removal from Gas Streams by Adsorption onto Natural Clay and Faujasite-Y type Zeolite

“…Moreover, adsorption is a very effective treatment method to use at low concentration levels of VOCs. [15][16] Activated carbons and zeolites have been widely used as adsorbents in many environmental applications. [17][18][19][20][21][22][23] On one hand, the use of activated carbons as adsorbents is limited by their high costs of manufacturing, pore blocking, flammability risk and other problems associated to their regeneration.…”