Treatment of Paint Spray Booth Off-Gases in a Fungal Biofilter

Qi, Bing; Moe, William M.; Kinney, Kerry A.

doi:10.1061/(asce)0733-9372(2005)131:2(180)

Cited by 54 publications

(39 citation statements)

References 23 publications

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“…Low head loss observed in these biofilters was likely attributable in part to the highporosity polyurethane foam packing, which allows substantial accumulation of biomass without a concomitant increase in pressure drop. 11,15,31 CONCLUSIONS Results presented herein demonstrate that the synthetic gas stream representative of emissions from reformulated paints can be treated effectively using biofilters even in cases with intermittent operation. With use of an acclimated enrichment culture, successful startup was achieved under intermittent or continuous loading conditions; however, high removal efficiency was achieved more quickly in the continuously loaded system.…”

Section: Microscopy Datamentioning

confidence: 95%

“…Laboratory and pilot-scale biofilters treating mixtures of ketones and aromatic hydrocarbons have revealed that removal of ketones generally precedes that of aromatic compounds. [7][8][9]11,15 Faster removal of ketones may result because of physical-chemical properties of higher aqueous partitioning coefficients and aqueous solubilities leading to faster mass transfer. It may also result from inherent differences in rates of enzyme-catalyzed reactions.…”

Section: Voc Concentration Profilesmentioning

confidence: 99%

“…Recent laboratory-scale tests and full-scale installations have demonstrated that biological treatment processes can be an effective technique for controlling VOC emissions generated during manufacture, 5,6 as well as application, [7][8][9][10][11] of conventional paint. In the most common biological process for air pollution control, referred to as biofiltration, contaminated air is passed through a packed-bed fixed-film bioreactor.…”

Section: Introductionmentioning

confidence: 99%

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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: Microscopy Datamentioning

confidence: 95%

Section: Voc Concentration Profilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…Extraction of biomass from that packing did not result in a sufficient amount for analysis. A possible reason for low biomass and poor performance in that reactor could be similar to the one advanced by Qi et al 20 They found that poor VOC removal performance in biofilters packed with PUF was because of incomplete humidification of the influent air, which caused partial drying of the packing material and high salinity at the inlet port of the reactor. This effect, although minimized by the higher water holding capacity of the porous packings, could have influenced the axial distribution patterns in the other biofilters shown in Figure 8.…”

Section: Detailed Packing Analysismentioning

confidence: 71%

Comparison of Different Packing Materials for the Biofiltration of Air Toxics

Sakuma

Hattori

Deshusses

2006

Journal of the Air & Waste Management Association

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Four different biofilter packing materials (two porous ceramics, perlite, and open pore polyurethane foam) were compared for the removal of toluene vapors. The focus was on evaluating performance at relatively short gas retention time (13.5 and 27 sec). The reactors were initially operated as biotrickling filters with continuous feeding and trickling of a nutrient solution. After significant plugging of the biotrickling filter beds with biomass was observed, the operation mode was switched to biofiltration with only periodic supply of mineral nutrients. This resulted in stable conditions, which allowed detailed investigations over Ͼ6 months. The reactor packed with cattle bone Porcelite (CBP), a ceramic material containing some macronutrients and micronutrients, exhibited the highest performance. The critical load (i.e., load at which 95% removal occurred) was 29 g m Ϫ3 hr Ϫ1 at a gas retention time of 13.5 sec and 66 g m Ϫ3 hr Ϫ1 at a gas retention time of 27 sec. After the long-term experiment, the packing materials were taken from the reactors and examined. The reactors were divided into three sections, top, middle, and bottom, to determine whether spatial differentiation of biomass occurred. The assays included a double-staining technique to count total and live microorganisms and determination of moisture, protein, and dry weight contents. Microbial community analysis was also conducted by denaturing gradient gel electrophoresis. The results showed that most reactors had a significant fraction of inactive biomass. Comparatively, the CBP biofilter held significantly higher densities of active biomass, which may be the reason for the higher toluene removal performance. The analyses suggest that favorable material properties and the nutrients slowly released by the CBP provided better environmental conditions for the process culture.

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“…For removal and biodegradation of a wide-range organic compounds from industrial plants, usage of fungi was tested. Also, some research was already performed to examine the impact of VOC within paints on planktonic bacteria (STOFFELS et al, 1998) and filamentous fungi (QI and KINNEY, 2005). QI and KINNEY, (2005) tested efficiency of the pure culture of Cladosporium sphaerospermum in removing the mixture of n-butyl acetate, methyl ethyl ketone, methyl propyl ketone, and toluene.…”

Section: Introductionmentioning

confidence: 99%

Difference in influence of commercial industrial paints on microbial biofilms and planktonic cells

Grujić¹,

Radevic²,

Radojević³

et al. 2017

Kragujevac J Sci

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ABSTRACT. This study compares the effect of commercial industrial paints on the Escherichia coli PMFKG-F2, Proteus mirabilis PMFKG-F4 and Saccharomyces cerevisiae PMFKG-F6 planktonic cells and biofilms. A MBEC TM -HTP assay and standard 96 microtiter plate assay were used to test the levels of resistance of planktonic cells and biofilms. The minimum inhibitory concentration (MIC) and minimum lethal concentration (MLC) of the tested substances, which affects planktonic cells and biofilms, were determined and the results were confirmed by fluorescence microscopy.Results obtained for planktonic cells were compared between them and with the results obtained for biofilms. Noticeable difference in the resistance between the biofilms and the planktonic cells on paints, was observed. The E. coli PMFKG-F2 planktonic cells showed the highest resistance in the presence of the tested substance 2 (MICp 2.5 µl/ml), while the P. mirabilis PMFKG-F4 planktonic cells showed the highest resistance in the presence of the tested substance 2 (MICp 5 µl/ml). The S. cerevisiae PMFKG-F6 planktonic cells showed the same level of resistance in the presence of the tested substances 1, 2 and 5 (MICp 0.62 µl/ml). The E. coli PMFKG-F2, P. mirabilis PMFKG-F4 and S. cerevisiae PMFKG-6 biofilms showed the highest resistance in the presence of the tested substance 5 (MICb 125 µl/ml, MICb 125 µl/ml and MICb 62.5 µl/ml).The obtained results suggest that the biofilm may have a potential to be used in bioremediation of wastewater contaminated with industrial paints.

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Treatment of Paint Spray Booth Off-Gases in a Fungal Biofilter

Cited by 54 publications

References 23 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

Comparison of Different Packing Materials for the Biofiltration of Air Toxics

Difference in influence of commercial industrial paints on microbial biofilms and planktonic cells

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