A comparative assessment of biofiltration and activated sludge diffusion for odour abatement

Lebrero, Raquel; Rodriguéz, Elisa; García‐Encina, Pedro A.; Muñoz, Raúl

doi:10.1016/j.jhazmat.2011.03.090

Cited by 65 publications

(29 citation statements)

References 25 publications

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“…Several physical-chemical properties of macadamia nutshells were measured. The moisture content of the packing material was determined using Equation (1) with m N and m DN the mass of the nutshells at ambient conditions and the mass of dry nutshells after 24 h drying in an oven at 383 K:…”

Section: Characterization Of Packing Materialsmentioning

confidence: 99%

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Volckaert

Álvarez‐Hornos

Heynderickx

et al. 2012

J of Chemical Tech & Biotech

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BACKGROUND Biofilters are suitable to treat industrial emissions polluted with volatile organic compounds (VOCs), responsible for photochemical smog and depletion of the ozone layer. This study analyzes the performance of a biofilter with Macadamia ternifolia nutshells as a carrier material treating air streams contaminated with ethylbenzene under mesophilic conditions with continuous feeding. RESULTS The biofilter was operated continuously for 5 months applying several inlet loads (IL), empty bed residence times (EBRT) and temperatures. At a temperature of 303 ± 1 K removal efficiencies (RE) higher than 90% were obtained for ILs lower than 85.6 g m−3 h−1 and 70.6 g m−3 h−1 at an EBRT of 150 and 90 s. The yield coefficient resulted in 0.73 g of dry biomass formed per g of ethylbenzene degraded. Michaelis–Mentens half saturation parameter Km and maximum volumetric elimination rate rm were calculated for EBRT of 90 s, Km = 0.28 ± 0.09 g m−3 and rm = 89 ± 11 g m−3 h−1, and 150 s, Km = 0.72 ± 0.18 g m−3 and rm = 117 ± 15 g m−3 h−1. CONCLUSIONS The experimental data shows that a biofilter with Macadamia ternifolia nutshells (waste material in Thailand) as a carrier material is a good option for air treatment in tropical areas with typical temperatures varying from 292 to 313 K, using ethylbenzene as a test substrate. Copyright © 2012 Society of Chemical Industry

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Section: Characterization Of Packing Materialsmentioning

confidence: 99%

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Volckaert

Álvarez‐Hornos

Heynderickx

et al. 2012

J of Chemical Tech & Biotech

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“…The biological oxidation of sulphide is used in the process called "activated sludge diffusion" (AS diffusion) to treat odorous air at wastewater treatment plants, since odors associated with sewage and wastewater treatment are mainly generated by H2S [2][3][4][5][6]. In biological reactors equipped for AS diffusion [7], the gaseous Sulphur compounds diffuse into the liquid phase where microorganisms are able to oxidize them.…”

Section: Introductionmentioning

confidence: 99%

Sulphide Biooxidation in Activated Sludge Diffusion Process: Microbiological and Biochemical Effects

et al. 2018

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Sulphide was adopted as odorous compound in a simulation of AS Diffusion, an interesting process to treat odors at wastewater treatment plants by diffusing odorous air into aerobic basins. Its behaviour were experimentally evaluated along with its effects on the biomass and the biological processes supposed by some author in an AS diffusion test. Two bench scale sequencing batch reactors (SBRs) were fed in parallel on real primary sewage and monitored after adding increasing concentrations of sulphide to one of them. In this reactor, an average sulphide removal of 94% was measured. Microbial biochemical activity and composition did not show relevant variations after the addition of sulphide, and the good features of activated sludge flocs were maintained also in terms of sludge settleability.

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“…It is currently estimated that more than half of all biofilters installed worldwide for the treatment of gaseous emissions are used in composting, sewage (Van Groenetijn and Kraakman, 2005) and wastewater treatment plants (Lebrero et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Dynamic olfactometry and GC–TOFMS to monitor the efficiency of an industrial biofilter

Gutiérrez

Martín

Pagans³

et al. 2015

Science of The Total Environment

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A comparative assessment of biofiltration and activated sludge diffusion for odour abatement

Cited by 65 publications

References 25 publications

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Sulphide Biooxidation in Activated Sludge Diffusion Process: Microbiological and Biochemical Effects

Dynamic olfactometry and GC–TOFMS to monitor the efficiency of an industrial biofilter

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