Investigation of Cleaning Efficiency of a Biofilter With an Aeration Chamber/Valymo Biofiltru Su Aeracine Kamera Efektyvumo Tyrimai/Исследование Эффективности Биофильтра С Аэрационной Камерой

Baltrėnas, Pranas; Zagorskis, Alvydas

doi:10.3846/1648-6897.2009.17.12-19

Cited by 28 publications

(14 citation statements)

References 11 publications

(8 reference statements)

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“…The aqueous medium employed was used to maintain the optimal moisture in the biofilter medium and was prepared using the following components: 1 g K 2 HPO 4 ; 0.5 g KCl; 0.5 g MgSO 4 •7H 2 O; 0.1 g FeSO 4 •7H 2 O; 0.90g NaNO 3 , and 1000 g of water (Baltrėnas and Zagorskis, 2009). Aqueous medium was added and replaced with a new one once the sediments appeared.…”

Section: The Aqueous Medium With Nutrientsmentioning

confidence: 99%

A biochar-based medium in the biofiltration system: Removal efficiency, microorganism propagation, and the medium penetration modeling

Baltrėnas

Baltrėnaitė

Kleiza

et al. 2016

Journal of the Air & Waste Management Association

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Biofiltration is a method of biological treatment belonging to cleaner technologies because it does not produce secondary air pollutants, but helps to integrate natural processes in microorganisms for decomposing volatile air pollutants and solving odor problems. The birch wood biochar has been chosen as a principal material for biofilter bed medium. The experiments were conducted at the temperatures of 24, 28, and 32°C, while the concentration of acetone, xylene, and ammonium reached 300 mg/m 3 and the flow rate was 100 m 3 /hr. Before passing through the stage of the experimental research into the packing material inside biofilters, microorganisms were introduced. Four strains of microorganisms (including micromycetes Aspergillus versicolor BF-4 and Cladosporium herbarum 7KA, as well as yeast Exophiala sp. BF1 and bacterium Bacillus subtilis B20) were selected. At the inlet loading rate of 120 g/m 3 /hr, the highest elimination capacity of xylene in the biochar-based biofilter with the inoculated medium was 103 g/m 3 /hr, whereas that of ammonia was 102 g/m 3 /hr and that of acetone was 97 g/m 3 /hr, respectively. The maximum removal efficiency reached 86%, 85%, and 81%, respectively. The temperature condition (though characterized by some rapid changes) can hardly have a considerable influence on the biological effect (i.e., microbiological activity) of biofiltration; however, it can cause the changes in physical properties (e.g., solubility) of the investigated compounds.Implications: The birch biochar can be successfully used in the biofiltration system for propagation of inoculated microorganisms, biodegrading acetone, xylene, and ammonia. At the inlet loading rate of 120 g/m 3 /hr, the highest elimination capacity of xylene was 103 g/m 3 /hr, that of ammonia was 102 g/m 3 /hr, and that of acetone was 97 g/m 3 /hr, respectively. The morphological structure of biochar can be affected by the aggressive air contaminants, causing the change in the medium specific surface area, which is one of the factors controlling the biofilter performance. Although biological effects in biofiltration are typically considered to be more important than physical effects, the former may be more important for compounds with high Henry's Law coefficient values, and the biofilter design should thus provide conditions for better compound absorption.PAPER HISTORY

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Section: The Aqueous Medium With Nutrientsmentioning

confidence: 99%

A biochar-based medium in the biofiltration system: Removal efficiency, microorganism propagation, and the medium penetration modeling

Baltrėnas

Baltrėnaitė

Kleiza

et al. 2016

Journal of the Air & Waste Management Association

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“…1). The solution used for research purposes has been made of K 2 HPO 4 -1 g, KCl -0.5 g, MgSO 4 ×7H 2 O -0.5 g, FeSO 4 ×7H 2 O -0,1 g, NaNO 3 -0.90 g and 1000 g distilled water (Baltrėnas, zagorskis 2009;Trejo-Aguilar et al 2005;Liao et al 2008;Chang, Lu 2003;Wright 2005;Dorado et al 2008;Mansour et al 2011).…”

Section: Maintaining Humidity In the Biofilter With A Wavy Lamellar Smentioning

confidence: 99%

“…At the moment, biological air treatment using certain cultures of microorganisms is one of the most promising air cleaning methods (Baltrėnas, zagorskis 2009 …”

Section: Introductionmentioning

confidence: 99%

“…Lower aerodynamic resistance determines a better distribution of oxygen, which is involved in the metabolic processes of nutrients, in the packing material. Regular search for the methods that improve the aerodynamic processes occurring in the packing material without reducing the effectiveness of treatment is taking place (Baltrėnas, zagorskis 2009).…”

Section: Introductionmentioning

confidence: 99%

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Effectiveness Research on a Wavy Lamellar Plate-Type Biofilter With a Capillary System for the Humidification of the Packing Material Applying Introinduced Microorganisms

Mačaitis

Misevičius

Paškevičius

et al. 2014

Journal of Environmental Engineering and Landscape Management

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Abstract. Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Keywords: TNT, bioaugmentation, biostimulation, phytoremediation, microbial community.

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“…Mažesnis aerodinaminis pasipriešinimas lemia geresnį deguonies, kuris dalyvauja maistinių medžiagų apykaitos procesuose, pasiskirstymą įkrovoje. Nuolat ieškoma būdų, kaip pagerinti įkrovoje vykstančius aerodinaminius procesus, nemažinant valymo efektyvumo (Baltrėnas, Zagorskis 2009). …”

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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Investigation of Cleaning Efficiency of a Biofilter With an Aeration Chamber/Valymo Biofiltru Su Aeracine Kamera Efektyvumo Tyrimai/Исследование Эффективности Биофильтра С Аэрационной Камерой

Cited by 28 publications

References 11 publications

A biochar-based medium in the biofiltration system: Removal efficiency, microorganism propagation, and the medium penetration modeling

A biochar-based medium in the biofiltration system: Removal efficiency, microorganism propagation, and the medium penetration modeling

Effectiveness Research on a Wavy Lamellar Plate-Type Biofilter With a Capillary System for the Humidification of the Packing Material Applying Introinduced Microorganisms

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

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