Topic
Mass transfer coefficient
About: Mass transfer coefficient is a research topic. Over the lifetime, 7827 publications have been published within this topic receiving 168354 citations.
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TL;DR: In this paper, the authors used modified Onda-type equations to better understand the sensitivity of gas and liquid velocities on mass transfer, and the effects of packing wetting.
56 citations
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TL;DR: In this paper, the authors measured mean relative gas hold up, slip velocity, bubble size distribution, and volumetric mass transfer coefficient of oxygen in sparged columns of highly viscous non-Newtonian fluids (CMC solutions) as a function of the gas flow rate, and CMC concentration.
56 citations
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TL;DR: In this article, the authors compared the performance of PDMS and poly (methyl vinyl) siloxane (PVMS) in the membrane extraction of water-phenol mixtures and found that PDMS was more suitable for the operation under strong base condition.
56 citations
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TL;DR: Very accurate determinations of the first and second moments of sample peaks have been made from measurements at different velocities of the mobile phase, finding that a flow-dependent mass transfer term also plays a role in the exchange between the mobile and stationary phases.
56 citations
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TL;DR: In this paper, a correlation for the volumetric gas-liquid mass transfer coefficient (kLa) in stirred-tank reactors (STRs) using results from the literature is developed.
Abstract: A correlation is developed for the volumetric gas–liquid mass transfer coefficient (kLa) in stirred-tank reactors (STRs) using results from the literature. The volumetric mass transfer coefficient is correlated on the basis of the relative dispersion parameter (N/NCD) for similar impeller hydrodynamics and operating regimes. Using a bench-top STR of diameter T= 0.211 m, gas–liquid mass transfer data are also obtained and found to follow the proposed correlation when the appropriate hydrodynamic conditions are satisfied. A STR scale-up technique from bench-scale (T= 0.211m and D/T= 0.35) to industrial-scale (up to T= 2.7 m) is proposed using a normalized hydrodynamic flow regime map and shown to be useful in understanding the range of operational conditions for the successful scale-up of STRs.
56 citations