A model for treating polluted air streams in a continuous two liquid phase stirred tank bioreactor

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

“…13 ), corresponding to microorganisms supporting a high affinity towards the VOC. These results were in agreement with Fazaelipoor [10], who highlighted the relevance of low KS values for increasing TPPB performance. The sensitivity analysis here performed under the current operational conditions clearly identified VOC mass transfer rather than biological activity as the main limitation of the system.…”

“…For instance, Cruickshank et al [9] described the strong impact of O2 limitation on the performance of TPPBs by means of a comprehensive mathematical model. The key role of the biological kinetic parameters (particularly the VOC half-saturation constant KS) on the performance of TPPBs was anticipated by the mathematical description proposed by Fazaelipoor [10]. Likewise, the occurrence of a direct VOC uptake in the NAP was early proposed in the mathematical description of the benzene vapor removal in TPPBs by Nielsen et al [11,12] The impact of the NAP addition on the VOC absorption in TPPBs has been better understood from the modeling approach of Dumont et al [13,14].…”

Model for a solid–liquid stirred tank two-phase partitioning bioscrubber for the treatment of BTEX

“…This uptake and release of BTEX by the polymer beads reduces toxic substrate levels in the aqueous phase during periods of high loading and increases mass transfer of BTEX out of the gas phase. Although models for liquid-liquid TPPBs for the treatment of waste gases, which have an organic solvent sequestering phase, have been developed and validated [6][7][8][9], no models exist for suspended growth SL-TPPBs, despite several benefits of using polymers as a sequestering phase over organic solvents [10].…”

Novel Bioreactors for Waste Gas Treatment

“…Therefore, there are many works based on the addition of an organic-phase with more affi nity for the target compound than water. The continuous presence of heavy organic solvent in biological air treatment systems can also be advantageous for the removal of hydrophilic compounds from air stream, because they can reduce the level of inhibitory effect caused by high concentrations of organic pollutants to the existing microbial community (Fazaelipoor 2007 ) . The most widely used organic phases are dodecane, hexadecane, and silicone oil.…”