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Design and evaluation of gas transport through a zeolite membrane on an alumina support. (2018)
Book Chapter
SHEHU, H., OKON, E., ORAKWE, I. and GOBINA, E. 2018. Design and evaluation of gas transport through a zeolite membrane on an alumina support. In Rashed, M.N. and Palanisamy, P.N. (eds.) Zeolites and their applications. London: IntechOpen [online], chapter 3. Available from: https://doi.org/10.5772/intechopen.75545

This chapter details the synthesis and applications of zeolite membranes (gas separation and zeolite membrane reactors). Gas separation is still not carried out at industrial level for zeolite membranes. Related areas, such as the possibility of inco... Read More about Design and evaluation of gas transport through a zeolite membrane on an alumina support..

Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol. (2018)
Thesis
OKON, E.P. 2018. Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol. Robert Gordon University, PhD thesis.

Ethyl lactate (EL) plays a major role as green solvent and also a replacement for most petrochemical solvents. The esterification process of lactic acid and ethanol to produce EL is an equilibrium-limiting reaction and the selective removal of one of... Read More about Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol..

Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation. (2017)
Journal Article
OKON, E., SHEHU, H. and GOBINA, E. 2018. Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation. International journal of hydrogen energy [online], 43(15), pages 7703-7712. Available from: https://doi.org/10.1016/j.ijhydene.2017.07.230

This study presents the effect of combined membrane separation and heterogeneous catalysts for the production of ethyl lactate solvent. The enhanced process is a flat sheet cellulose acetate membrane and cation-exchange resin catalysts. A methodology... Read More about Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation..

Novel zeolite-polyurethane membrane for environmental applications and gas separations. (2017)
Journal Article
SHEHU, H., OKON, E. and GOBINA, E. 2017. Novel zeolite-polyurethane membrane for environmental applications and gas separations. Materiaux and techniques [online], 105(2), article number 205. Available from: https://doi.org/10.1051/mattech/2017031

This research work investigates the effect of polyurethane polymer on the separation of CO2, CH4 and C3H8 through a zeolite/polyurethane mixed matrix membrane. A methodology based on the modification of porous ceramic inorganic support with the aim t... Read More about Novel zeolite-polyurethane membrane for environmental applications and gas separations..

Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. (2017)
Conference Proceeding
EDIDIONG, O., HABIBA, S. and GOBINA, E. 2017. Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. In Ao, S.I., Gelman, L., Hukins, D.W.L., Hunter, A. and Korsunsky, A.M. (eds.) Proceedings of the 2017 International multiconference of engineers and computer scientists (IMECS 2017), 15-17 March 2017, Hong Kong, China. Lecture notes in engineering and computer science, 2228. Hong Kong: Newswood Ltd [online], pages 811-817. Available from: http://www.iaeng.org/publication/IMECS2017/IMECS2017_pp811-817.pdf

In this work, the batch process esterification reaction was carried out at 80 oC using different types of heterogeneous catalysts. The heterogeneous resin catalysts used for the analysis were amberlyst 15, amberlyst 36, amberlyst 16 and dowex 50W8x.... Read More about Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical..

Recovery of VOC from offshore and onshore shuttle tankers using structured Y-type zeolite membranes. (2017)
Conference Proceeding
HABIBA, S., AJAYI, A., EDIDIONG, O. and GOBINA, E. 2017. Recovery of VOC from offshore and onshore shuttle tankers using structured Y-type zeolite membranes. In Ao, S.-I., Kim, H.K. and Amouzegar, M.A. (eds.) Transactions on engineering technologies: revised selections from proceedings of the 2015 World congress on engineering and computer science (WCECS 2015), 21-23 October 2015, San Francisco, USA. Singapore: Springer [online], pages 541-553. Available from: https://doi.org/10.1007/978-981-10-2717-8_38

The emissions of volatile organic compounds (VOCs) from onshore and offshore facilities are studied and an alternative technology for the recovery of methane and propane by the use of membrane technology is explored. Permeation tests were carried out... Read More about Recovery of VOC from offshore and onshore shuttle tankers using structured Y-type zeolite membranes..

Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes. (2015)
Journal Article
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

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-act... Read More about Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes..

Preparation and characterization of inorganic membranes for hydrocarbon separation from N2 for environmental applications. (2015)
Journal Article
KAJAMA, M.N., SHEHU, H., OKON, E. and GOBINA, E. 2015. Preparation and characterization of inorganic membranes for hydrocarbon separation from N2 for environmental applications. Energy and environment research [online], 5(1), pages 110-120. Available from: https://doi.org/10.5539/eer.v5n1p110

This paper reports the preparation and characterization of gas transport using tubular alumina support and silica membrane for propylene (C3H6) and nitrogen (N2) separation. Dip-coating technique was employed to deposit silica on the support after wh... Read More about Preparation and characterization of inorganic membranes for hydrocarbon separation from N2 for environmental applications..