Biofiltration of volatile ethanol using sugar cane bagasse inoculated with Candida utilis

Christen, Pierre; Domenech, F.; Michelena, Georgina; Auria, Richard; Revah, Sergio

doi:10.1016/s0304-3894(01)00314-4

Cited by 69 publications

(34 citation statements)

References 18 publications

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“…The fact that many fungal species are able to degrade the VOCs present in the waste gas stream, however, raises the distinct possibility that they contributed to VOC removal. 21,[25][26][27][28][29][30] No attempt was made to enumerate microbial populations in Biofilter 2, so a direct comparison between the two systems is not possible. As described in the following section, however, differences in the quantity of biomass between the two systems were readily apparent from microscopy analysis.…”

Section: Plate Count Datamentioning

confidence: 99%

Biofilter Treatment of Volatile Organic Compound Emissions from Reformulated Paint: Complex Mixtures, Intermittent Operation, and Startup

Moe

2005

Journal of the Air & Waste Management Association

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Two biofilters were operated to treat a waste gas stream intended to simulate off-gases generated during the manufacture of reformulated paint. The model waste gas stream consisted of a five-component solvent mixture containing acetone (450 ppm v ), methyl ethyl ketone (12 ppm v ), toluene (29 ppm v ), ethylbenzene (10 ppm v ), and p-xylene (10 ppm v ). The two biofilters, identical in construction and packed with a polyurethane foam support medium, were inoculated with an enrichment culture derived from compost and then subjected to different loading conditions during the startup phase of operation. One biofilter was subjected to intermittent loading conditions with contaminants supplied only 8 hr/day to simulate loading conditions expected at facilities where manufacturing operations are discontinuous. The other biofilter was subjected to continuous contaminant loading during the initial start period, and then was switched to intermittent loading conditions. Experimental results demonstrate that both startup strategies can ultimately achieve high contaminant removal efficiency (Ͼ99%) at a target contaminant mass loading rate of 80.3 g m Ϫ3 hr Ϫ1and an empty bed residence time of 59 sec. The biofilter subjected to intermittent loading conditions at startup, however, took considerably longer to reach high performance. In both biofilters, ketone components (acetone and methyl ethyl ketone) were more rapidly degraded than aromatic hydrocarbons (toluene, ethylbenzene, and p-xylene). Scanning electron microscopy and plate count data revealed that fungi, as well as bacteria, populated the biofilters.

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Section: Plate Count Datamentioning

confidence: 99%

Biofilter Treatment of Volatile Organic Compound Emissions from Reformulated Paint: Complex Mixtures, Intermittent Operation, and Startup

Moe

2005

Journal of the Air & Waste Management Association

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“…Generally, heterotrophic microbial strains used in VOC bioreactors, can bio-catalyse VOCs via two pathways: (1) consuming organic compounds in the course of catabolic pathway for energy or (2) using VOCs as a carbon source for anabolic processes. Species of Pseudomonas, Candida, Mycobacterium, Alcaligenes, Exophiala, Acetinobacter, Fusarium, Cladosporium, Rhodococus, Aspergillus and mucor are some of microorganisms which identified and used for degradation of VOCs by biofiltration (Marek et al, 1999;Diehl et al, 2000;Christen et al, 2002;Qi et al, 2002;Woertz et al, 2002). The filter bed inoculation depends on both the nature of the filtering materials and the VOC biodegradability level.…”

Section: Microorganismmentioning

confidence: 99%

Volatile Organic Compounds Removal Methods: A Review

Bouchaala¹

2012

American Journal of Biochemistry and Biotechnology

145

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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.

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“…After 16 days, the EC decreased drastically which can be attributed to the inhibitory conditions by high concentration of ethanol in the aqueous phase, oxygen limitation or accumulation of toxic products. Christen et al (2001) reported that steady-state in the ethanol biofiltration by Candida utilis was maintained for 300 h with an ethanol load of 93.7 g m -3 h -1 . However, at a load of 511.9 g m -3 h -1 , no steady-state was observed due to the accumulation of toxic compounds such as acetaldehyde, acetic acid and ethyl acetate, which are produced from the partial oxidation of ethanol.…”

Section: Effect Of Hydrocarbon Loads On Bioreactor Performancementioning

confidence: 99%

Hydrophobic response of the fungus Rhinocladiella similis in the biofiltration with volatile organic compounds with different polarity

et al. 2009

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Rhinocladiella similis biodegraded volatile organic compounds (VOCs) of different polarity in gas-phase biofilters. Elimination capacities, (EC) of 74 g(hexane) m(-3) h(-1), 230 g(ethanol) m(-3) h(-1), 85 g(toluene) m(-3) h(-1) and 30 g(phenol) m(-3) h(-1) were obtained. EC values correlated with the solubility of the VOCs. R. similis grown with n-hexane or ethanol in biofilters packed with Perlite showed that the surface hydrophobicity was higher with n-hexane than ethanol. The hydrophobin-like proteins extracted from the mycelium produced with n-hexane (15 kDa) were different from those in the ethanol biofilter (8.5 kDa and 7 kDa).

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Biofiltration of volatile ethanol using sugar cane bagasse inoculated with Candida utilis

Cited by 69 publications

References 18 publications

Biofilter Treatment of Volatile Organic Compound Emissions from Reformulated Paint: Complex Mixtures, Intermittent Operation, and Startup

Biofilter Treatment of Volatile Organic Compound Emissions from Reformulated Paint: Complex Mixtures, Intermittent Operation, and Startup

Volatile Organic Compounds Removal Methods: A Review

Hydrophobic response of the fungus Rhinocladiella similis in the biofiltration with volatile organic compounds with different polarity

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