Two‐Phase Partitioning Bioreactors

Fam, Hala

doi:10.1002/9781118523360.ch8

Cited by 4 publications

(2 citation statements)

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“…The increased pace of experimental studies in TPPBs conducted in the past 10 years has significantly expanded our understanding of the complex mass transfer phenomena and substrate uptake mechanisms, which constitute the fundamental processes governing the performance of these multiphase systems [5,8]. Recent experimental findings confirmed the direct VOC uptake from liquid NAPs in some instances, opening new possibilities for the development of highperformance TPPBs [16,17].…”

Section: Introductionmentioning

confidence: 59%

“…Moreover, most NAPs used for TPPB implementation show a high affinity for O2 and consequently, the increase in the VOC mass transfer in TPPBs is concomitant with an increase in the O2 transfer rate, enhancing the opportunities for complete VOC mineralization [5,6]. Thus, the VOC biodegradation performance in TPPBs is often superior to that recorded in conventional biological gas treatment systems [7,8].…”

Section: Introductionmentioning

confidence: 99%

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A novel mathematical approach for the understanding and optimization of two-phase partitioning bioreactors devoted to air pollution control

Dorado¹,

Dumont²,

Muñoz³

et al. 2015

Chemical Engineering Journal

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Two-phase partitioning bioreactors (TPPBs) support the removal of volatile organic compounds (VOCs) from contaminated gaseous emissions at unprecedented rates and concentrations. TPPBs are biological multiphase systems provided with a non-aqueous phase (NAP) with high affinity for the target VOC. Although modeling of TPPBs is a research field that has rapidly evolved, recent experimental findings such as the direct VOC uptake from liquid NAPs and the quantification of simultaneous partial mass transfer coefficients have not been incorporated yet in a comprehensive mathematical description. In this work, a mathematical description of TPPBs, including continuous aqueous phase renewal and potential VOC uptake directly from the NAP, was developed. Model simulations indicated that TPPB performance can be enhanced by improving the partial mass transfer coefficient between the gas and the NAP (by increasing the contact between the gas and the NAP). The model also showed that microorganisms with half-saturation constants < 5 g m -3and ability to take up VOC directly from the NAP can boost significantly TPPB performance. The present modeling platform was tested against experimental data from literature for methane, hexane and dichloromethane and no parameter fitting was carried out.

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