Enhancement of gas-liquid mass transfer rate of apolar pollutants in the biological waste gas treatment by a dispersed organic solvent

1997 ◽  
Vol 21 (8) ◽  
pp. 578-588 ◽  
Author(s):  
M.Teresa Cesário ◽  
Wim A. Beverloo ◽  
Johannes Tramper ◽  
Hendrik H. Beeftink
Keyword(s):  
Mass Transfer ◽  
Organic Solvent ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Gas Treatment ◽  
Waste Gas ◽  
Liquid Mass ◽  
Waste Gas Treatment ◽  
Liquid Mass Transfer

Enhancement of formic acid production from CO2 in formate dehydrogenase reaction using nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109978-109982 ◽  
Author(s):  
Young-Kee Kim ◽  
Sung-Yeob Lee ◽  
Byung-Keun Oh
Keyword(s):  
Mass Transfer ◽  
Formic Acid ◽  
Acid Production ◽  
Transfer Rate ◽  
Formate Dehydrogenase ◽  
Mass Transfer Rate ◽  
Liquid Mass ◽  
Dehydrogenase Reaction ◽  
Liquid Mass Transfer ◽  
Mesoporous Nanoparticles

In an enzyme process using a gas substrate, the enhanced gas liquid mass transfer rate of the gas substrate by methyl-functionalized mesoporous nanoparticles could improve the productivity.

scholarly journals Effect of Particle Penetration Depth on Solid/liquid Mass Transfer Rate by Particle Blowing Technique

2017 ◽  
Vol 57 (11) ◽  
pp. 1902-1910 ◽  
Author(s):  
Takahiro Okuno ◽  
Md. Azhar Uddin ◽  
Yoshiei Kato ◽  
Sang Beom Lee ◽  
Yong Hwan Kim
Keyword(s):  
Mass Transfer ◽  
Penetration Depth ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Liquid Mass ◽  
Particle Penetration ◽  
Liquid Mass Transfer ◽  
Solid Liquid

Toluene removal in a biofilm reactor for waste gas treatment

1997 ◽  
Vol 36 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Anne R. Pedersen ◽  
Erik Arvin
Keyword(s):  
Mass Transfer ◽  
Gas Flow ◽  
Biofilm Reactor ◽  
Biological Degradation ◽  
Gas Treatment ◽  
Waste Gas ◽  
Filter Performance ◽  
Liquid Mass ◽  
Toluene Removal ◽  
Liquid Mass Transfer

A lab-scale trickling filter for treatment of toluene-containing waste gas was investigated. The filter performance was investigated for various loads of toluene. Two levels of the gas flow were examined, 322 m d−1 and 707 m d−1. The gas inlet concentrations were varied in the range from 0.6 to 4.0 g m−3. The toluene elimination increased linearly with increasing load, and at maximum load the elimination was 50 g m−3 h−1 (70% purification efficiency). This was in accordance with reported values for toluene removal in trickling filters. The removal was determined by the gas/liquid mass transfer and the biological degradation as well. An analytical model described the toluene removal as a half-order removal by use of two sets of parameters for the gas/liquid mass transfer and the biological degradation due to the two different gas flows. The mass transfer coefficients and the surface removal rates estimated by parameter fitting corresponded to previously observed values. The effect of the gas flow on the mass transfer coefficient and the biological removal rate may be explained by different flow patterns of the gas and the liquid phases. A characterisation of the biofilm showed an almost even biofilm growth over the filter height, which was in accordance with a constant liquid concentration throughout the column.

scholarly journals Gas-solid and gas-liquid mass transfer: Effect of turbulent Schmidt number

2007 ◽  
Vol 13 (3) ◽  
pp. 167-168 ◽  
Author(s):  
Aleksandar Dudukovic ◽  
Rada Pjanovic
Keyword(s):  
Mass Transfer ◽  
Eddy Viscosity ◽  
Schmidt Number ◽  
Mass Transfer Rate ◽  
Transfer Effect ◽  
Transfer Coefficients ◽  
Mass Transfer Effect ◽  
Liquid Mass ◽  
Turbulent Schmidt Number ◽  
Liquid Mass Transfer

The scope of this paper is to explain effect of eddy viscosity and turbulent Schmidt number on mass transfer rate. New, theoretically based correlation for gas-liquid mass transfer coefficients are proposed.

Performance evaluation and effect of biogas circulation rate of a bubble column for biological desulfurization

2012 ◽  
Vol 66 (9) ◽  
pp. 1914-1922 ◽  
Author(s):  
Takuro Kobayashi ◽  
Kai-Qin Xu ◽  
Yu-You Li ◽  
Yuhei Inamori
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Removal Rate ◽  
Mass Transfer Rate ◽  
Circulation Rate ◽  
Bubble Column Reactor ◽  
Sulfate Production ◽  
Liquid Mass ◽  
Batch Tests ◽  
Liquid Mass Transfer

Biological desulfurization using a bubble column reactor was investigated in a continuous biogas treatment. Rapid biogas circulation between the digester and the bubble column for biological desulfurization was used to stimulate the gas–liquid mass transfer of H2S. A positive correlation between the biogas circulation rate and H2S removal rate was observed. Moreover, the increase in the circulation rate stimulated the O2 mass transfer, eventually translating into an increase in sulfate production from the oxidation of H2S. Throughout the continuous experiment, the reactor retained sufficient levels of sulfide-oxidizing bacteria. A comparison of the results of the continuous biogas treatment and batch tests suggests that the gas–liquid mass transfer rate of H2S was the rate-limiting step in the biological desulfurization in the reactor, indicating that the mass transfer efficiency of H2S needs to be improved to enhance the desulfurization performance.

Sign in / Sign up

Export Citation Format

Share Document