Performance of a styrene-degrading biofilter inoculated with Pseudomonas sp. SR-5

Jang, Jong Hee; Hirai, Mitsuyo; Shoda, Makoto

doi:10.1263/jbb.100.297

Cited by 19 publications

(15 citation statements)

References 29 publications

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“…This can explain the behavior of EC observed in Figure 5. First, at nitrogen concentrations smaller than 2 gN/L, the styrene removal was limited by the nitrogen availability, as observed by Jang et al 29 in styrene biofiltration. Then, the maximal EC was reached at 3 gN/L.…”

Section: Styrene Elimination Rate Throughout the Packed Bed Heightmentioning

confidence: 84%

Biofiltration of Air Contaminated by Styrene Vapors on Inorganic Filtering Media: An Experimental Study

St-Pierre

Ramírez

Heitz

2009

Journal of the Air & Waste Management Association

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This paper presents a study on the biofiltration of styrene by using two inorganic filtering materials. The effects of styrene inlet load and nitrogen concentration present in the nutrient solution on biofilter performance were studied. The styrene inlet concentration was varied from 65 to 1115 parts per million by volume (ppmv), whereas the contaminated airflow rate was fixed at 1 m 3 /hr. The nitrogen concentration in nutrient solution was varied from 1 to 4 gN/L. The maximum elimination capacity obtained was 105 g/m 3 -hr, which corresponded to a removal efficiency of 80% for a styrene inlet load of 130 g/m 3 -hr. This study shows that the nitrogen content in the nutrient solution affects the removal rate of styrene, with an optimal nitrogen concentration of 3 gN/L. The performance comparison between two different inorganic bed types was undertaken and a comparative study on biofiltration of two aromatic compounds, styrene and toluene, is also presented.

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Section: Styrene Elimination Rate Throughout the Packed Bed Heightmentioning

confidence: 84%

Biofiltration of Air Contaminated by Styrene Vapors on Inorganic Filtering Media: An Experimental Study

St-Pierre

Ramírez

Heitz

2009

Journal of the Air & Waste Management Association

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“…A micronutrient medium [7] was used to supplement inorganic salts to the microorganisms used in the biofilter, while VOC was used as the sole carbon source. On the basis of 1 L of aqueous solvent, the mineral salt nutrient medium used for the biofilter had the following compositions, 1.55 g K 2 HPO 4 , 0.85 g NaH 2 PO 4 Á2H 2 O, 2.0 g (NH 4 ) 2 SO 4 , 0.1 g MgCl 2 Á6H 2 O, 10.0 mg EDTA, 2.0 g…”

Section: Micronutrient Mediummentioning

confidence: 99%

“…In Figs. 4,7,9,10,11,12 concentrations of solute in three phases have been plotted against axial position of the biofilter using gas phase superficial velocity as a parameter. Overall pattern remains the same at all values of gas velocities.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…4,7,13,14,15,16, axial concentration profiles of VOC in three phases have been plotted using liquid velocity as a parameter. As the liquid velocity exceeds gas velocity, the ultimate removal of solutes increases.…”

Section: Theoretical Analysismentioning

confidence: 99%

“…During the vapour treatment in wafer fabrication and printed circuit board applications highly volatile organic solvents like trichloroethylene [2,3], acetone and other such solvents are frequently used. On the other hand, the solvents like toluene [4,5], styrene [6,7], and so on are used extensively in polymer industries and in different chemical process industries involving solvent extraction. Although very low in concentration, the volatile organic compounds [8,9] are highly detrimental to human health.…”

Section: Introductionmentioning

confidence: 99%

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Experiments and three phase modelling of a biofilter for the removal of toluene and trichloroethylene

Das

Chowdhury

Bhattacharya

2010

Bioprocess Biosyst Eng

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Volatile organic compounds, namely, toluene, trichloroethylene, styrene, etc., disposed off by electronics and polymer industries, are very harmful. The treatment of VOC laden air through biochemical route is one of the potential options for reduction of their concentration in parts per million or parts per billion level. Under the present investigation, a 0.05-m diameter and 0.58-m high trickle bed biofilter has been studied for the removal of VOCs namely toluene and trichloroethylene from a simulated air-VOC mixture using pure strain of Pseudomonas putida (NCIM2650) in immobilized form. Inlet concentrations of VOCs have been varied in two ranges, the lower being 0.20-2.00 g/m(3) and higher being 10-20 g/m(3), respectively. The Monod type rate kinetics of removal of VOCs has been determined. A three-phase deterministic mathematical model has been developed taking the simultaneous reaction kinetics and interphase (gas to liquid to biofilm) mass transfer rate of VOCs into consideration. Experimentally determined kinetic parameters and mass transfer coefficients calculated using standard correlations have been used. Concentrations have been simulated for all the three phases. Simulated results based on the model have been compared with the experimental ones for both gas and liquid phases satisfactorily. The mathematical model validated through the successful comparison with experimental data may be utilized for the prediction of performance of biofilters undergoing removal of different VOCs in any further investigation and may be utilized for the scale-up of the system to industrial scale.

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Microbial degradation of styrene: biochemistry, molecular genetics, and perspectives for biotechnological applications

Mooney

Ward

O’Connor

2006

Appl Microbiol Biotechnol

111

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Large quantities of the potentially toxic compound styrene are produced and used annually by the petrochemical and polymer-processing industries. It is as a direct consequence of this that significant volumes of styrene are released into the environment in both the liquid and the gaseous forms. Styrene and its metabolites are known to have serious negative effects on human health and therefore, strategies to prevent its release, remove it from the environment, and understand its route of degradation were the subject of much research. There are a large number of microbial genera capable of metabolizing styrene as a sole source of carbon and energy and therefore, the possibility of applying these organisms to bioremediation strategies was extensively investigated. From the multitude of biodegradation studies, the application of styrene-degrading organisms or single enzymes for the synthesis of value-added products such as epoxides has emerged.

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Performance of a styrene-degrading biofilter inoculated with Pseudomonas sp. SR-5

Cited by 19 publications

References 29 publications

Biofiltration of Air Contaminated by Styrene Vapors on Inorganic Filtering Media: An Experimental Study

Biofiltration of Air Contaminated by Styrene Vapors on Inorganic Filtering Media: An Experimental Study

Experiments and three phase modelling of a biofilter for the removal of toluene and trichloroethylene

Microbial degradation of styrene: biochemistry, molecular genetics, and perspectives for biotechnological applications

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