Removal of methyl acrylate by ceramic-packed biotrickling filter and their response to bacterial community

Treatment of 1,2‐dichloroethane and n‐hexane in a combined system of non‐thermal plasma catalysis reactor coupled with a biotrickling filter

“…As shown in Fig. , the decrease in removal efficiency was primarily due to the reduction of the pollutant retention time, which limited the mass transfer of the pollutant from the gas phase to the biofilm as well as the capacity of the microbes to capture, adsorb and degrade the pollutants in the BTF . Longer EBRTs resulted in improved removal of 1,2‐dichloethane, but required a bigger volume BTF reactor, which limits its practical application.…”

“…5, the decrease in removal efficiency was primarily due to the reduction of the pollutant retention time, which limited the mass transfer of the pollutant from the gas phase to the biofilm as well as the capacity of the microbes to capture, adsorb and degrade the pollutants in the BTF. 43 Longer EBRTs resulted in improved removal of 1,2-dichloethane, but required a bigger volume BTF reactor, which limits its practical application. However, the additional use of DBD-catalysis pretreatment can compensate this limitation of BTF, helping the combined system to achieve relatively high removal efficiencies even at low EBRTs compared with the single BTF system.…”

Identification and Elucidation of the Designing and Operational Issues of Trickling Filter Systems for Wastewater Treatment

“…Mixing of industrial wastewater in influent during VOC degradation Anaerobic conditions in the system Try to neutralized the TF influents by using buffer materials for, e.g., calcium carbonate and dolomite Use nutrient solution, for example Ca(OH) 2 , NaOH, NaHCO 3 , and urea [13,126,129] Biofilm/Slime layer Improper media selection Uneven nutrients supply Uneven aeration High organic and hydraulic loading rates Uneven sloughing Weather Conditions Control the slime layer thickness by sloughing process Create aerobic conditions by maintaining optimum oxygen transfer rate Use good filter media that support microbial growth Use a chemical addition like ferric chloride and polymers to enhanced the growth of the slime layer and also trickling filter efficiency Use optimum oxygen levels for proper growth of bio-film Optimum amounts of nutrient solutions can be applied for microbial growth Increase the DO level of influent by recirculating the effluent Optimize the organic loading rate to maintain bio-film structure [13,23,80,[136][137][138][139][140][141][142][143] effect in TF systems. It was also observed that biofilm thickness also fluctuates seasonally and the thickness was increased in winter and decreased in summer [13,79].…”

“…The performance of TFs varies with media to media due to its surface, depth, and size. Scientists have used several packing media to enhance TF performance, e.g., rocks, plastic [13], nylon pot scrubber [77], groups of commercial rings (such as crushed leca, kaldnes, and Norton), calcitic gravel [115][116], geotextile [117], pall rings [118], polyurethane foam pores [119], coal cinder [42], tire-derived rubber [45], oyster shell [120], corrugated plastic sheet [41], stone [70], gravel and zeolite [118] sponge [38], zeolite and ceramsite [40], polypropylene plastic [39], biochar chips [44], ceramic particles [121], etc. (Brief summaries of the different filter media used in TFs with their targeted pollutants removed are given in Tables 2 and 3).…”

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

“…A major component of modern-day indoor pollution is microscopic airborne solid material known as particulate matter (PM) or aerosols, which includes fine particles [1,2], bacteria [3][4][5], and hydrocarbons (toluene, xylene, formaldehyde and other organic components [6][7][8][9]). Among these, formaldehyde is one of the most prevalent pollutants in indoor air.…”