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, a general and simple model was developed to characterize the VOC transfer by means of the overall mass transfer coefficient (KLa), which was obtained by fitting the model to experimental data of toluene absorption obtained at empty bed residence times (EBRT) from 7 to 50 s.
59 citations
TL;DR: In this article, the liquid-side mass transfer coefficient k L in a dense bubble swarm for a wide range of gas volume fraction ( 045 % ≤ α G ≤ 165 % ) was considered for an air-water system in a square column.
59 citations
TL;DR: In this paper, a parametric study of CO 2 absorption into aqueous solutions of monoethanolamine (MEA)-2-amino-2-methyl-1-propanol (AMP) blends was conducted to obtain a much-needed mass transfer data for process design.
59 citations
TL;DR: A cross-flow rotating packed bed process was evaluated for its absorption of some volatile organic compounds into water, including isopropyl alcohol, acetone, and ethyl acetate, and thus an empirical correlation of KGa was proposed for the first time.
Abstract: A cross-flow rotating packed bed (RPB) process was evaluated for its absorption of some volatile organic compounds (VOCs) into water, including isopropyl alcohol, acetone, and ethyl acetate. The experimental results showed that the mass transfer coefficient (KGa) increased with increasing rotational speed, liquid rate, and gas rate, and thus an empirical correlation of KGa was proposed for the cross-flow RPB for the first time. It was found that this correlation could reasonably estimate our experimental KGa data as well as those reported in literatures. Although the mass transfer coefficient was lower than that in a countercurrent-flow RPB, a cross-flow RPB is believed to be capable of handling a higher gas rate because of its flow pattern.
59 citations
TL;DR: In this paper, an approach to energy transfer due to microscopic interactions between moving acceptor and donor molecules is described, based on a set of coupled evolution equations, assuming that the displacements of the reacting particles obey a diffusion equation.
Abstract: An approach to energy transfer due to microscopic interactions between moving acceptor and donor molecules is described. The theory is based on a set of coupled evolution equations, assuming that the displacements of the reacting particles obey a diffusion equation. A general expression for the transfer rate holding for any microscopic interaction form is derived and its asymptotic behavior at long and moderately long times is examined. Special emphasis is given to the influence of the molecular motion. In the fast diffusion limit, the transfer rate is independent of the mobility of the particles and given by the integral of the microscopic interaction form over space. In a finite diffusion limit, a characteristic transfer length is introduced; it may be interpreted as the radius of a sphere within which trapping is complete in spite of outward diffusion. Its exact expression is derived for multipolar and exponential interactions.
59 citations