Two-phase partitioning bioreactors: a new technology platform for destroying xenobiotics

“…Two-Phase Partitioning Bioreactors (TPPBs) have been identified as one of the potential biotechnologies to treat hydrophobic Volatile Organic Compounds (VOCs; [1][2][3][4]). In such gasliquid-liquid processes, the mass transfer coefficient K L a is a key parameter in estimating reactor performance [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Volumetric mass transfer coefficients characterising VOC absorption in water/silicone oil mixtures

Dumont¹,

Darracq²,

Couvert³

et al. 2013

Chemical Engineering Journal

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The physical absorption of three Volatile Organic Compounds (dimethyldisulphide (DMDS), dimethylsulphide (DMS) and toluene) in "water/silicone oil" systems at a constant flow rate for mixtures of different compositions (φ = 0, 5, 10, 15, 20 and 100%) was investigated using a dynamic absorption method. The results indicate that silicone oil addition leads to a dramatic decrease in K L a which can be related to the change in the partition coefficient (H mix ). They confirm the results obtained for styrene absorption using another measurement technique [15].The interpretation of the results using dimensionless ratiosversus φ also confirms the importance of the partition coefficient ratio m R = H water /H oil in the K L a change. Moreover, the results obtained for toluene absorption in "air/water/silicone oil" systems (φ = 10, 15 and 20%) suggest that the mass transfer pathway is in the order gas→water→oil for these operating conditions. Key-wordsAbsorption; Mass Transfer; Hydrophobic VOC; TPPB; Silicone oil

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“…Up to now, biosurfactant production prediction has only been modeling with soluble carbon sources, being the model most recently reported by Rodrigues et al (2006). Models that describe the uptake of microbial pollutants or product recovery in two liquid phases have been previously reported (Daugulis, 2001). However, models to describe the microbial production of biosurfactant from immiscible substrates in water, have not yet been developed, being type of great importance to design the engineering of the heterogeneous systems liquidliquid, due to the higher yields obtained on the product (biosurfactant) with respect to the systems with soluble carbon sources.…”

Section: Abstract: Bioreactors; Biosurfactants; Liquid Culture; Mathementioning

confidence: 99%

Modeling rhamnolipids production by Pseudomonas aeruginosa from immiscible carbon source in a batch system

Medina-Moreno

Jiménez-Islas

Gracida

et al. 2011

Int. J. Environ. Sci. Technol.

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Two-phase partitioning bioreactors: a new technology platform for destroying xenobiotics

Cited by 212 publications

References 21 publications

Degradation of a Mixture of Hydrocarbons, Gasoline, and Diesel Oil Additives by Rhodococcus aetherivorans and Rhodococcus wratislaviensis

Degradation of a Mixture of Hydrocarbons, Gasoline, and Diesel Oil Additives by Rhodococcus aetherivorans and Rhodococcus wratislaviensis

Volumetric mass transfer coefficients characterising VOC absorption in water/silicone oil mixtures

Modeling rhamnolipids production by Pseudomonas aeruginosa from immiscible carbon source in a batch system

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