Biodegradation of ethanol vapour in a biofilter

Abstract

Bio®ltration is a cost effective air pollution control technology for volatile organic compounds. Bio®ltration of ethanol vapour from air stream was evaluated in this study. Experimental investigations were conducted on a laboratory scale bio®lter, containing mixture of compost and polystyrene inert particles as the ®lter materials. Mixed consortium of activated sludge was used as a inoculum. The continuous performance of bio®lter for ethanol removal was monitored for different concentrations and¯ow rates. The removal ef®ciencies decreased at higher concentrations and higher gas¯ow rates. A maximum elimination capacity of 195 g m A3 h A1 was achieved. The response of bio®lter to shut down and restart-up operation showed that the bio®lm has got a good stability.

Biotrickling Filtration of Air Contaminated with 1-Butanol

“…During the start-up phase, butanol removal might have been due to adsorption on the perlite as the initial biomass concentration was low, but as a biofilm formed over the perlite particles, the removal mechanism must have switched to biodegradation. A similar observation has been reported by Arulneyam et al [9].…”

“…Studies have been reported in literature with laboratory-scale bioreactors to evaluate the performance for a range of hydrocarbons and oxygenated hydrocarbons [9][10][11][12][13][14][15][16]. However, the biological treatment of 1-butanol in air has not been as extensively reported as some other compounds, especially at higher concentrations.…”

Elimination of Methanol and Ethanol by Biofiltration: An Experimental Study

“…Various biofiltration studies have been previously performed with ethanol and have usually reported maximum elimination capacities of around 200 g/ m 3 /h (Arulneyam and Swaminathan 2000;Wen et al 2005). High level conversions (between 90 and 100%) can also be attained.…”

“…Industries associated with large emissions of alcohol vapors include: printing, foundries, pulp and paper, food industries (including bakeries, sugar refineries, alcohol distillation) or those process industries using solvents during their extraction, washing or drying process steps (Arulneyam and Swaminathan 2000;Dastous et al 2005). To control the emissions of these alcohols, various technologies have been proposed and tested over the years.…”

生物滤池在处理VOCs和异味气体中的应用研究进展<br>A Review of Biofilter for Treatment of VOCs and Odours

“…、珍珠岩 [17] 、蛭石 [18] 、玻璃珠 [19] 、聚氨酯泡沫塑料 [20] 、聚苯乙烯 [21] [38] 等人研究表明苯系物的降解 作用强度达到最大的 pH 适宜范围为 7.5~8.0。Lee [39] 等也报道苯系物降解的适宜 pH 为 7.0。Veiga [40] 等研 究了不同的 …”