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

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.

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

• Journal Article Type: Article
• Acceptance Date: Sep 5, 2015
• Online Publication Date: Sep 8, 2015
• Publication Date: Sep 30, 2015
• Deposit Date: Sep 9, 2016
• Publicly Available Date: Sep 9, 2016
• Journal: Journal of materials science and chemical engineering
• Print ISSN: 2327-6045
• Electronic ISSN: 2327-6053
• Publisher: Scientific Research Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Issue: 9
• Pages: 8-14
• DOI: https://doi.org/10.4236/msce.2015.39002
• Keywords: Esterification; Resin characterisation; Transport mechanism; Ethyl lactate; Permeability
• Public URL: http://hdl.handle.net/10059/1645