Biodegradation of aromatic hydrocarbons in a compost biofilter

Torkian, Ayoob; Dehghanzadeh, Reza; Hakimjavadi, M

doi:10.1002/jctb.823

Cited by 54 publications

(39 citation statements)

References 12 publications

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“…Calibration curve was obtained by injecting different amounts of liquid n-hexane in a sealed Tedlar bag of known volume and analysing the gas sample [14].…”

Section: Methodsmentioning

confidence: 99%

“…In recent years, a large number of studies have been conducted on VOC biofiltration with several support materials (compost, pine bark, wood chips, peat, inorganic supports or mixed materials) and some hydrophobic and hydrophilic compounds found in different industries [13][14][15][16]. Elimination capacities for benzene, toluene and xylene of 60 g C·m -3 biofilter·h -1 with a removal efficiency of 75% [17] and 18 g C·m -3 biofilter·h -1 with a removal efficiency of 81% [18] have been reported using organic materials and compost respectively.…”

Section: Introductionmentioning

confidence: 99%

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Emission of volatile organic compounds from composting of different solid wastes: Abatement by biofiltration

Pagans

Font

Sánchez

2006

Journal of Hazardous Materials

167

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Emission of volatile organic compounds (VOCs) produced during composting of different organic wastes (source-selected organic fraction of municipal solid wastes (OFMSW), raw sludge (RS) and anaerobically digested wastewater sludge (ADS) and animal by-products (AP)) and its subsequent biofiltration have been studied.Composting was performed in a laboratory scale composting plant (30 l) and the exhaust gases generated were treated by means of a compost biofilter. VOCs concentration in the composting exhaust gases for each composting process ranged from 50 to 695 mg C·m -3 for OFMSW

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“…Calibration curve was obtained by injecting different amounts of liquid n-hexane in a sealed Tedlar bag of known volume and analysing the gas sample [14].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Emission of volatile organic compounds from composting of different solid wastes: Abatement by biofiltration

Pagans

Font

Sánchez

2006

Journal of Hazardous Materials

167

View full text Add to dashboard Cite

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“…Gas sampling ports were connected to impingers containing sulfuric acid solution to trap ammonia gas. Moisture content was determined by drying 5 g of the bed medium at 104 °C for 24 h., cooling in desiccators at room temperature, and measuring the final weight (Torkian, et al, 2003). To determine the pH value of the media, 50ml distilled water was added to a 5g sample then the mixture was blended and used for measurement (Liang, et al, 2000).…”

Section: Methodsmentioning

confidence: 99%

“…The pollutants diffuse from the gas phase into the thin layer of biofilm attached to the support media and are metabolized. The end products of complete biodegradaton are CO 2 , water and microbial biomass (Torkian, et al, 2003). Hence, biofiltration is a complex process that involves several physical, chemical and biological interactions (Baquerizo, et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the biological NH3 removal characteristics of a three stage biofilter with a one stage biofilter

Taghipour

Shahmansoury

Bina

et al. 2006

Int. J. Environ. Sci. Technol.

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ABSTRACT:A three stage and a one-stage bench-scale biofilter with effective heights of 129 cm filled with same type of packing material were operated at different influent concentrations of ammonia in order to investigate their performance in treating waste gas streams. The columns contained a mixture of municipal compost inoculated with thickened municipal activated sludge as a base material and shredded hard plastic as a bulking agent in a 3:2 v/v ratio; the porosity, density and pH were 52 %, 0.65 and 7.2 respectively. Microbial acclimation to ammonia was achieved by exposing the three stage biofilter to an average inlet loading rate of 2.15g-NH 3 /m 3 h and the one-stage to an average inlet loading rate of 1.32 g NH 3 /m 3 h and an empty bed residence time of 60 s, for 10 days and 17 days respectively. Under steady-state condition, maximum elimination capacity (EC) was 9.85 g-NH 3 /m 3 h at a loading rate of 9.86 g-NH 3 /m 3 h for three-stage biofilter and 8.08 g NH 3 /m 3 h at a loading rate of 8.13 g-NH 3 /m 3 h for one-stage biofilter. The average pressure drop across biofilters bed was determined 33.76 Pa/m 1 in three-stage biofilter and 180.7 Pa/m 1 in one-stage biofilter. The three stage biofilter showed superior performance and gained more elimination capacity, shorter acclimation time, longer operation in steady-state condition and less pressure drop than one-stage biofilter.

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“…However, all these materials, under the sway of microorganisms decompose after some time Yun and Ohta 1998;Torkian et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Cleaning Efficiency of Biological Air‐treatment Device With Activated Charge of Different Origin/Biologinio Oro Valymo Įrenginio Su Aktyvinta Skirtingos Kilmės Įkrova Valymo Efektyvumo Tyrimai/ Исследование Эффективности Установки Для Биологической Очистки Воздуха С Активированной Загрузкой Различного Происхождения

Baltrnas

Zagorskis²

2008

Journal of Environmental Engineering and Landscape Management

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Abstract. In order to carry out an experimental investigation a biological air-treatment device was used, namely, a biofilter with a charge of a different origin composed of zeolite, foam and wood chips. When mixing foam and zeolite together with wood chips for air treatment from volatile organic compounds, not only a biological but also adsorptive air-treatment method is used. Using complex treatment technologies the device efficiency and the charge service period are improved. The investigation has shown that microorganisms, being predominant in the bio-treatment process, can breed in charges of on inorganic origin made of natural zeolite and foam. While cultivating spontaneous microorganism associations in the charge, biofilter treatment efficiency was determined to be dependent on the sort of the supplied pollutant, concentration and filtration period. The charge filtration function was most efficient at a velocity of 0,1 m/s when the device was supplied with acetone-polluted air. Cleaning air from acetone, when the original concentration of the pollutant was 103 mg/m 3 , the filter treatment efficiency reached 95%. When the concentration of pollutants supplied into the biofilter is reduced and the filtration period is increased, the device treatment efficiency increases as well.

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Biodegradation of aromatic hydrocarbons in a compost biofilter

Cited by 54 publications

References 12 publications

Emission of volatile organic compounds from composting of different solid wastes: Abatement by biofiltration

Emission of volatile organic compounds from composting of different solid wastes: Abatement by biofiltration

Comparison of the biological NH3 removal characteristics of a three stage biofilter with a one stage biofilter

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