Evaluating the impact of water supply strategies on p-xylene biodegradation performance in an organic media-based biofilter

Gallastegui, Gorka; Muñoz, Raúl; Ibarra-Berastegi, Gabriel; Barona, Astrid; Ηλίας, Α.

doi:10.1016/j.jhazmat.2010.10.008

Cited by 19 publications

(12 citation statements)

References 35 publications

(36 reference statements)

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“…They concluded that the removal of BTEX (benzene, toluene, ethylbenzene, xylenes) increases when temperatures increase from 15 to 25°C following an exponential trend. The role of compost moisture (CM) is also important and has been identified as a key operating parameter determining biofiltration efficiency (Gallastegui et al, 2011). In this study, the compost moisture content showed a loss of 30% from the beginning until the end of the treatment (Figure 3).…”

Section: Biofilter Treatmentmentioning

confidence: 75%

“…The presence of anaerobic sulfate-reducing bacteria indicates the development of anaerobic zones in the biofilter. This could be promoted by continuously supplying water, which could result in channeling phenomena and compaction of the biofilter medium (Gallastegui et al, 2011). Accordingly, when the pollutant concentrations are regular, a packing material with low-bioavailability carbon and low biodegradability, such as compost based on green waste, appears to be a good technological solution for indoor air pollution treatment.…”

Section: Biofilter Treatmentmentioning

confidence: 99%

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A hybrid biological process of indoor air treatment for toluene removal

Hort

Platel

Sochard

et al. 2014

Journal of the Air & Waste Management Association

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Bioprocesses, such as biofiltration, are commonly used to treat industrial effluents containing volatile organic compounds (VOCs) at low concentrations. Nevertheless, the use of biofiltration for indoor air pollution (IAP) treatment requires adjustments depending on specific indoor environments. Therefore, this study focuses on the convenience of a hybrid biological process for IAP treatment. A biofiltration reactor using a green waste compost was combined with an adsorption column filled with activated carbon (AC). This system treated a toluene-micropolluted effluent (concentration between 17 and 52 µg/m 3 ), exhibiting concentration peaks close to 733 µg/m 3 for a few hours per day. High removal efficiency was obtained despite changes in toluene inlet load (from 4.2 × 10 −3 to 0.20 g/m 3 /hr), which proves the hybrid system's effectiveness. In fact, during unexpected concentration changes, the efficiency of the biofilter is greatly decreased, but the adsorption column maintains the high efficiency of the entire process (removal efficiency [RE] close to 100%). Moreover, the adsorption column after biofiltration is able to deal with the problem of the emission of particles and/or microorganisms from the biofilter.Implications: Indoor air pollution is nowadays recognized as a major environmental and health issue. This original study investigates the performance of a hybrid biological process combining a biofilter and an adsorption column for removal of indoor VOCs, specifically toluene.

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Section: Biofilter Treatmentmentioning

confidence: 75%

Section: Biofilter Treatmentmentioning

confidence: 99%

A hybrid biological process of indoor air treatment for toluene removal

Hort

Platel

Sochard

et al. 2014

Journal of the Air & Waste Management Association

Self Cite

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“…In the particular case of biofilters, the moisture content of the packed bed constitutes a key performance parameter governing microbial activity [71]. The optimal bed moisture content in biofiltration ranges from 40% to 70% (on a weight basis), although optimal microbial activities have been recorded at lower moisture contents for xerophilic microbial communities [9,72,73]. Excessive moisture may cause a rapid organic packing media structural deterioration, the development of anaerobic zones and limit gas pollutant mass transfer from the gas phase to the biofilm in the particular case of hydrophobic gas pollutants [8,46,74].…”

Section: Packing Materialsmentioning

confidence: 99%

Biological technologies for the treatment of atmospheric pollutants

Muñoz

Malhautier

Fanlo

et al. 2015

International Journal of Environmental Analytical Chemistry

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“…Biofiltrai naudojami butanoliui, acetonui, ksilenui, toluenui ir kitiems lakiesiems organiniams junginiams iš oro valyti (Delhomenie, Heitz 2005;Jeong et al 2010;Gallastegui et al 2010). Įrenginiai gali būti efektyvūs, kai teršalo koncentracija neviršija 500 mg/m 3 (Govind 2009;Ramirez et al 2009;Baltrėnas, Zagorskis 2010a).…”

Section: įVadasunclassified

Research on the Aerodynamic Resistance of Trickle Biofilter / Lašelinio Biofiltro Aerodinaminio Pasipriešinimo Tyrimai

Zagorskis

Spiečiūtė

2011

Mokslas - Lietuvos Ateitis

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A four – section trickle biofilter was constructed for experimental research. The filter was filled with the packing material of artificial origin. The material consists of plastic balls having a large surface area. The dependence of biofilter aerodynamic resistance on supply air flow rate and the number of filter sections was determined. The aerodynamic resistance of the biofilter was measured in two cases. In the first case, the packing material of the filter was dry, whereas in the second case it was wet. The experimental research determined that an increase in the air flow rate from 0.043 m/s to 0.076 m/s causes an increase in biofilter aerodynamic resistance from 30.5 to 62.5 Pa after measuring four layers of dry packing material. In case of wet packing material, biofilter aerodynamic resistance after measuring four layers of plastic balls increases from 42.1 to 90.4 Pa. Santrauka Eksperimentiniams tyrimams atlikti sukonstruotas keturių sekcijų lašelinis biofiltras. Filtras užpildytas dirbtinės kilmės įkrova, sudaryta iš didelį paviršiaus plotą turinčių plastikinių rutuliukų. Naudojant įkrovą, skirtą introdukuotų mikroorganizmų asociacijoms kultivuoti, nustatytos biofiltro aerodinaminio pasipriešinimo priklausomybės nuo tiekiamo oro srauto greičio ir sekcijų skaičiaus. Biofiltro aerodinaminis pasipriešinimas matuotas dviem atvejais: esant sausai ir sudrėkintai įkrovai. Nustatyta, kad didinant tiekiamo oro srauto greitį nuo 0,043 iki 0,076 m/s, įrenginio aerodinaminis pasipriešinimas išmatavus keturis įkrovos sluoksnius padidėja nuo 30,5 iki 62,5 Pa tuo atveju, kai įkrova sausa, ir nuo 42,1 iki 90,4 Pa, – kai įkrova sudrėkinta.

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Evaluating the impact of water supply strategies on p-xylene biodegradation performance in an organic media-based biofilter

Cited by 19 publications

References 35 publications

A hybrid biological process of indoor air treatment for toluene removal

A hybrid biological process of indoor air treatment for toluene removal

Biological technologies for the treatment of atmospheric pollutants

Research on the Aerodynamic Resistance of Trickle Biofilter / Lašelinio Biofiltro Aerodinaminio Pasipriešinimo Tyrimai

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