Elimination of hydrogen sulphide from odorous air by a wood bark biofilter

Langenhove, Herman Van; Wuyts, E.; Schamp, N.

doi:10.1016/0043-1354(86)90109-0

Cited by 74 publications

(28 citation statements)

References 4 publications

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“…8 It can be solved either by conditioning the existing materials or by using the inorganic materials with better air permeability for a field application of the biofilter. 11 The pressure drop was negligible during the experimental period of 70 days. This problem may occur more severely in the treatment of VOCs than ammonia, an inorganic contaminant, because of plugging caused by accumulating biomass.…”

Section: Results and Discussion Ammonia Removal Testsmentioning

confidence: 87%

“…This phenomenon has led to the installation of baffles in some biofilter reactors or the use of inorganic packing materials with better air permeability. 1,11 A modified biofilter with horizontal gas flow and baffles could solve this problem and accommodate a shorter residence time without the usually required greater biofilter area for increasing biofiltration efficiency. 10 In this study, various combinations of organic and inorganic packing materials were tested and one showing the best performance was selected.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Ammonia by Biofilters: A Study with Flow-Modified System and Kinetics

Choi

Kim

Joo

et al. 2003

Journal of the Air & Waste Management Association

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The characteristics of ammonia removal by two types of biofilter (a standard biofilter with vertical gas flow and a modified biofilter with horizontal gas flow) were investigated. A mixture of organic materials such as compost, bark, and peat was used as the biofilter media based on the small-scale column test for media selection. Complete removal capacity, defined as the maximum inlet load of ammonia that was completely removed, was obtained.The modified biofilter showed complete removal up to 1.0 g N/kg dry material/day. However, the removal capacity of the standard biofilter started to deviate from complete removal around 0.4 g N/kg dry material/day, indicating that the modified biofilter system has higher removal efficiency than the standard upflow one. In kinetic analysis of the biological removal of ammonia in each biofilter system, the maximum removal rate, V m , was 0.93 g N/kg dry material/day and the saturation constant, K s , was 32.55 ppm in the standard biofilter. On the other hand, the values of V m and K s were 1.66 g N/kg dry material/day and 74.25 ppm, respectively, in the modified biofilter system.

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Section: Results and Discussion Ammonia Removal Testsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Removal of Ammonia by Biofilters: A Study with Flow-Modified System and Kinetics

Choi

Kim

Joo

et al. 2003

Journal of the Air & Waste Management Association

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“…This suggests the existence of an optimal humidity. For hydrogen sulphide this humidity was 65% according Van Langenhove et al (1986). In the following experiments we have used a humidity of 57% because of its good characteristics for butanal removal and air permeability.…”

Section: Influence Of Biofilter Humiditymentioning

confidence: 99%

The effect of nutrient supplementation on the biofiltration removal of butanal in contaminated air

Weckhuysen

Vriens²,

Verachtert

1993

Appl Microbiol Biotechnol

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Abstract. Butanal is one of the odorous compounds produced in the animal-rendering and food-processing industries and also in sewage-treatment plants. It shows the necessity for complementing such plants with systems for off-gas treatment. Biofiltration using simple packing material was tested for the removal of butanal. Excellent results were obtained when the filters operated at optimal humidity and were supplemented with inorganic nutrients. Without nutrients, butyric acid was detected in the effluent gas, which may explain the lower efficiency of filters without nutrients. Under optimal conditions an elimination of around 90 g. m -3. h -1 was reached.

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“…Three hypotheses might explain this low (even negative) removal: 1) the possible abundance and desorption of terpenes 2) adsorption of hydrocarbons to bed medium followed by desorption and 3) low pH conditions in the bed medium creating conditions stressful to neutral pH hydrocarbon degraders. The first hypothesis comes from previous biofiltration studies of a-pinene [38]. In this work, quick acclimation of bacterial populations to pinene-laden gas streams was attributed to a-pinene being present in the bed medium material.…”

Section: Results and Dlxusslonmentioning

confidence: 97%

Biofiltration of asphalt emissions: Full‐scale operation treating off‐gases from polymer‐modified asphalt production

Cook

Gostomski

1999

Environ. Prog.

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Elimination of hydrogen sulphide from odorous air by a wood bark biofilter

Cited by 74 publications

References 4 publications

Removal of Ammonia by Biofilters: A Study with Flow-Modified System and Kinetics

Removal of Ammonia by Biofilters: A Study with Flow-Modified System and Kinetics

The effect of nutrient supplementation on the biofiltration removal of butanal in contaminated air

Biofiltration of asphalt emissions: Full‐scale operation treating off‐gases from polymer‐modified asphalt production

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