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Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes.

Okon, Edidiong; Shehu, Habiba; Nwogu, Ngozi; Kajama, Mohammed; Orakwe, Ifeyinwa; Gobina, Edward

Authors

Edidiong Okon

Habiba Shehu

Ngozi Nwogu

Mohammed Kajama

Ifeyinwa Orakwe

Edward Gobina

Abstract

The dip-coating method has been used to prepare silica membrane. The gas flow rate relationship with the gauge pressure showed a Knudsen type of mechanism of gas transport. The flux was found to decrease with respect to temperature indicating non-activation mechanism of transport through the membrane. The order of the gas kinetic diameter with respect to the gas flow rate was He > Ar > CO2 > N2 confirming a molecular sieving mechanism of gas transport. The characterisation of the resin catalysts was carried out using scanning electron microscopy (SEM). The SEM morphology of the Amberlyst 16 resin catalysts showed a defect-free surface before esterification process. Amberlyst 15 catalyst exhibited some defect on the surface indicating a lower resistance to lactic acid and decomposition at higher temperature after the esterification process at 60?C. The order of the gas viscosity with respect to the gas flux was N2 > Ar > CO2 > He.

Journal Article Type Article
Publication Date Sep 30, 2015
Journal Journal of materials science and chemical engineering
Print ISSN 2327-6045
Electronic ISSN 2327-6053
Publisher New Publisher Required
Peer Reviewed Peer Reviewed
Volume 3
Issue 9
Pages 8-14
Institution Citation OKON, E., SHEHU, H., NWOGU, N., KAJAMA, M., ORAKWE, I. and GOBINA, E. 2015. Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes. Journal of materials science and chemical engineering [online], 3(9), pages 8-14. Available from: https://doi.org/10.4236/msce.2015.39002
DOI https://doi.org/10.4236/msce.2015.39002
Keywords Esterification; Resin characterisation; Transport mechanism; Ethyl lactate; Permeability

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