Enhancing ethylbenzene vapors degradation in a hybrid system based on photocatalytic oxidation UV/TiO2–In and a biofiltration process

Treatment of organic waste gas in a paint plant by combined technique of biotrickling filtration with photocatalytic oxidation

“…The results showed clearly that highest TVOC removal efficiency was obtained by combined BTF-PCO (95.3-97.8%), followed by PCO (85.2-95.3%) and BTF (50.3-79.7%), suggesting that the combined BTF-PCO techniques was more suitable to remove the organic waste gas with multi-component and changed concentration. Comparatively, only 83% of ethylbenzene could be removed by using combined photocatalytic and biological system [26], which was lower than those in this study. Wei et al reported that 96.7% of toluene could be removed, however, the residence time was 60.6 s which was more than 3 times longer than that in our study [43].…”

“…recalcitrant of hydrophobic) made biofilters very large and uncompetitive [25]. Also, biological processes may not run consistently and were slow adaption to fluctuating VOCs concentrations, resulting in reducing VOCs elimination capacities [26]. An acclimation period with lower removal efficiency (RE) of VOCs was necessary for microorganisms according our previous study [14].…”

“…For instance, with the combination of a photocatalytic reactor and a biofilter, Hinojosa-Reyes et al [26] obtained an increase up to 36% additional ethylbenzene (EB) removal compared with the individual treatment. Palau et al [30] found that the elimination capacity of biofiltration to toluene increased by more than 12 g m À3 h À1 when combined with PCO reactor.…”

VOCs elimination and health risk reduction in e-waste dismantling workshop using integrated techniques of electrostatic precipitation with advanced oxidation technologies

“…To overcome this problem, researchers have successfully eliminated VOCs by combining biological approaches with PC technology (post or pretreatment) to maximize synergistic effects [19][20][21]. Nevertheless, a relatively long acclimation period is needed to use microorganisms in biological system [21,22].…”

Pollution profiles, health risk of VOCs and biohazards emitted from municipal solid waste transfer station and elimination by an integrated biological-photocatalytic flow system: A pilot-scale investigation

“…For instance, the degradation efficiencies of gaseous ethylbenzene [20] and styrene [21] were enhanced in the PCbiofiltration hybrid system. The enhancement of PC pre-treatment is maybe due to the reduction of pollutant concentrations and the production of more oxidized compounds, which are in most cases more easily biodegradable than the former ones and then relieve the inhibitory effect of microorganisms for degradation of toxic compounds.…”