Application of Biofiltration to the Control of VOC Emissions

Kiared, Karim; Wu, Guisheng; Beerli, M.; Rothenbühler, M.; Heitz, Michèle

doi:10.1080/09593331808616512

Cited by 30 publications

(17 citation statements)

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“…This hypothesis is additionally supported by other authors, who explained higher VOC elimination capacities at increased gas concentrations (for the same loading rate) by an increased microbial activity induced by the increased VOC concentrations. 20 For other VOCs, reported adaptation periods range from a few hours for methanol (400 ppm v ) to 7-10 days for ␣-pinene (30 -35 ppm v ). 21 During period 2, an EC max of 1695 g/m /day to standardize for stoichiometric oxygen demand.…”

Section: Discussionmentioning

confidence: 99%

Degradation of Isobutanal at High Loading Rates in a Compost Biofilter

Sercu

Demeestere

Baillieul

et al. 2005

Journal of the Air & Waste Management Association

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Biofiltration has been increasingly used for cleaning waste gases, mostly containing low concentrations of odorous compounds. To expand the application area of this technology, the biofiltration of higher pollutant loading rates has to be investigated. This article focuses on the biodegradation of isobutanal (IBAL) in a compost biofilter (BF) at mass loading rates between 211 and 4123 g/m 3 /day (30 -590 ppm v ). At mass loading rates up to 785 g/m 3 /day, near 100% removal efficiencies could be obtained. However, after increasing the loading rate to 1500 -1900 g/m 3 / day, the degradation efficiency decreased to 62-98%. In addition, a pH decrease and production of isobutanol (IBOL) and isobutyric acid (IBAC) were observed. This is the first report showing that an aldehyde can act as electron donor as well as acceptor in a BF. To study the effects of pH, compost moisture content, and electron acceptor availability on the biofiltration of IBAL, IBOL, and IBAC, additional batch and continuous experiments were performed. A pH of 5.2 reduced the IBAL degradation rate and inhibited the IBOL degradation, although adaptation of the microorganisms to low pH was observed in the BFs. IBAC was not degraded in the batch experiments. High moisture content (51%) initially had no effect on the IBOL production, although it negatively affected the IBAL elimination increasingly during a 21-day time-course experiment. In batch experiments, the reduction of IBAL to IBOL did not decrease when the amount of available electron acceptors (oxygen or nitrate) was increased. The IBAL removal efficiency at higher loading rates was limited by a combination of nutrient limitation, pH decrease, and dehydration, and the importance of each limiting factor depended on the influent concentration.

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Section: Discussionmentioning

confidence: 99%

Degradation of Isobutanal at High Loading Rates in a Compost Biofilter

Sercu

Demeestere

Baillieul

et al. 2005

Journal of the Air & Waste Management Association

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“…The pressure needed is significantly higher than for the other types of gas treatment systems because it must overcome the head of water (water depth in the tank) and headloss in the aerator. For example, the headloss across biofilters has been reported to range from 0.003 to 0.17 m of water head per m of bed depth (Govind et al, 1993;Kiared et al, 1997;Torres et al, 1997). Equation 9.16 can be used to estimate the power requirements for aeration (Metcalf & Eddy, 1991).…”

Section: Other Organicsmentioning

confidence: 99%

Bioreactors for Waste Gas Treatment

Kennes¹,

Veiga²

2001

Environmental Pollution

119

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“…ex., l'ammoniac, les amines, les oxydes d'azote, …), les composés soufrés (p. ex., sulfure d'hydrogène, disulfure de carbone, les mercaptans, …) et les composés halogénés (Bohn 1992;Williams et Miller 1993;Yang et Allen 1994;Allen et van Til 1997;Barnes et al 1995;Heinlein et Koch 1995;Kiared et al 1997b). Ces composés font partie des polluants atmosphériques, toxiques et (ou) malodorants et (ou) dangereux.…”

Section: Domaine D'application De La Biofiltrationunclassified

Traitement de l'air par biofiltration

Jorio¹,

Heitz²

1999

Can. J. Civ. Eng.

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Depuis plusieurs décennies, le traitement de l'air contaminé par des solvants organiques volatils fait l'objet de maintes recherches et tentatives dans le but de trouver le procédé le plus efficace et le moins onéreux. En parallèle aux diverses technologies traditionnelles de traitement de l'air, on assiste ces dernières années à l'émergence de procédés biologiques, en particulier la biofiltration qui semble constituer une avenue très appréciée de par son efficacité, son aspect environnemental et son moindre coût. Dans cet article, la technologie de biofiltration est située par rapport aux techniques conventionnelles et aux autres procédés biologiques de traitement de l'air. Par la suite, après un court historique sur la biofiltration, l'emphase est mise sur le principal objectif de cette revue bibliographique qui est la présentation des connaissances actuelles concernant les principes de base du procédé, les critères d'application, les conditions d'opération qui influencent les performances et la fiabilité de ce procédé et les développements récents sur la modélisation mathématique des biofiltres. Finalement, les applications industrielles et les coûts du procédé de biofiltration sont brièvement discutés.Abstract: During several decades, there have been numerous studies and attempts in the field of the treatment of volatile organic solvent contaminated air, with the aim of finding a more efficient and less expensive process. In parallel with the traditional air treatment technologies, biological processes have emerged in recent years. Biofiltration appears to be a particularly preferred path due to its efficiency, its environmental aspects, and its lower costs. In this paper, the biofiltration technology is positioned in relation to conventional techniques and other biological air treatments. Subsequently, after a short historical account of biofiltration, the focus is put on the main objective of this literature review, presenting the current knowledge about the basic principles of the process, its applicability, operational conditions that influence performance and reliability of this process, and recent developments in mathematical biofilter modeling. Finally, industrial applications and biofiltration processing costs are briefly discussed.

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Application of Biofiltration to the Control of VOC Emissions

Cited by 30 publications

References 0 publications

Degradation of Isobutanal at High Loading Rates in a Compost Biofilter

Degradation of Isobutanal at High Loading Rates in a Compost Biofilter

Bioreactors for Waste Gas Treatment

Traitement de l'air par biofiltration

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