Now showing items 1-10 of 10

  • Batch process esterification of lactic acid catalysed by cation-exchange resins for the production of environmental-friendly solvent. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Newswood Limited, International Association of Engineers, IAENG http://www.iaeng.org/publication/WCECS2015/, 2015-10-21)
    OKON, E., HABIBA, S. and GOBINA, E. 2015. Batch process esterification of lactic acid catalysed by cation-exchange resins for the production of environmental-friendly solvent. Lecture notes in engineering and computer science: the Proceedings of the world congress on engineering and computer science 2015 (WCECS 2015), 21 - 23 October 2015, San Francisco, USA. Hong Kong: Newswood Limited, International Association of Engineers, IAENG [online], pages 623-628. Available from: http://www.iaeng.org/publication/WCECS2015/WCECS2015_pp623-628.pdf
    In this work, batch wise esterification of lactic acid and ethanol was carried out using different cation-exchange resins including amberlyst 15, amberlyst 16, dowex 50W8x and amberlyst 36 as heterogeneous catalysts. The ...
  • Characterisation of inorganic composite ceramic membrane for lactic acid esterification processes. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Trans Tech Publications http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.99, 2015-05-01)
    OKON, E., SHEHU, H. and GOBINA, E. 2015. Characterisation of inorganic composite ceramic membrane for lactic acid esterification processes. Advanced materials research, 1102, Coddet, C. (ed.) Selected papers from the 2015 international conference on metal, ceramic and composite materials (ICMCCM-2015), 24-25 January 2015, Shanghai, China. Pfaffikon, Switzerland: Trans Tech Publications [online], pages 99-102. Available from: http://dx.doi.org/10.4028/www.scientific.net/AMR.1102.99.
    The use of inorganic composite membranes in chemical industries has received a lot of attention more recently due to a number of exceptional advantages including thermal stability and robustness. Inorganic membranes can ...
  • Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Newswood Limited, International Association of Engineers, IAENG http://www.iaeng.org/publication/IMECS2017/, 2017-03-15)
    OKON, E., HABIBA, S. and GOBINA, E. 2017. Esterification of lactic acid and ethanol using heterogenous catalysts for the production of a bio-based chemical. Lecture notes in engineering and computer science: Proceedings of the international multiconference of engineers and computer scientists 2017 Vol II (IMECS 2017) [online], 15 - 17 March 2017, Kowloon, Hong Kong. Hong Kong: Newswood Ltd, 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, ...
  • Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier https://doi.org/10.1016/j.cattod.2017.05.089, 2017-06-10)
    OKON, E., SHEHU, H. and GOBINA, E. 2018. Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. Catalysis today [online], 310, pages 146-156. Available from: https://doi.org/10.1016/j.cattod.2017.05.089
    The carrier gas permeation performance through α-alumina nano-porous ceramic membrane was investigated in this study. The four carrier gases used for the study were argon (Ar), helium (He), nitrogen (N2) and carbon dioxide ...
  • Gas transport and characterization of inorganic ceramic membrane for lactic acid esterification. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (International Association of Engineers., 2014-10)
    OKON, E., HABIBA, S. and GOBINA, E., 2014. Gas transport and characterization of inorganic ceramic membrane for lactic acid esterification. In: S.I. AO, C. DOUGLAS, W.S. GRUNDFEST and J. BURGSTONE, EDS. Proceedings of the World Congress on Engineering and Computer Science 2014. 22-24 October, 2014. San Francisco: International Association of Engineers. Volume II, pp. 590-594. ISBN 9789881925374.
    Ethyl lactate is an important organic ester, which is biodegradable in nature and widely used as food additive, perfumery, flavor chemicals and solvent. Inorganic porous ceramic membrane has shown a lot of advantages in ...
  • Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation. 

    Okon, Edidiong; Shehu, Habiba; Kajama, Mohammed; Orimoloye, Adesola; Nwogu, Ngozi Claribelle; Orakwe, Ifeyinwa; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp781-784.pdf, 2015-07-01)
    OKON, E.P., SHEHU, H., KAJAMA, M.N, ORIMOLOYE, A.O., NWOGU, N.C., ORAKWE, I.R. and GOBINA, E. 2015. Hydrodynamic performance in mesoporous silica membrane for lactic acid and esterifiecation. Lecture notes in engineering and computer science: Proceedings of the world congress on engineering 2015 (WCE 2015) [online], Vol II, 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, pages 781-784. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp781-784.pdf
    Ethyl Lactate has a lot of applications in different industries including food, pharmaceutical and agricultural processes. The esterification process of lactic acid and ethanol is a highly-equilibrium-controlled reaction. ...
  • Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications. 

    Okon, Edidiong; Gobina, Edward (Newswood Limited http://www.iaeng.org/publication/WCE2015/WCE2015_pp1287-1291.pdf, 2015-07-01)
    OKON, E. and GOBINA, E. 2015. Initial study of heterogeneous catalysts behaviour and carrier gas permeation with catalytic inorganic ceramic membrane for lactic acid esterification applications. Lecture notes in engineering and computer science: proceedings of the world congress on engineering 2015 (WCE 2015) [online], Vol II, 1-3 July 2015, London, UK. Hong Kong: Newswood Limited, pages 1287-1291. Available from: http://www.iaeng.org/publication/WCE2015/WCE2015_pp1287-1291.pdf
    Inorganic membranes continue to attract a lot of attention in various fields including industry and academia, due to the great potential they have shown in various applications. Recently, some studies have focused on the ...
  • Novel esterification reaction from biomass product by coupled acetate membrane and catalysts for ethyl lactate separation. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier https://doi.org/10.1016/j.ijhydene.2017.07.230, 2017-09-08)
    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 ...
  • Preparation, characterization and carrier gas transport characteristics of inorganic and organic membranes for application in lactic acid esterification with ethanol. 

    Okon, Edidiong (Robert Gordon University School of Engineering, 2018-04-01)
    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 ...
  • Resin characterization and tubular membrane transport with single gases for ethyl lactate separations for industrial purposes. 

    Okon, Edidiong; Shehu, Habiba; Nwogu, Ngozi Claribelle; Kajama, Mohammed; Orakwe, Ifeyinwa; Gobina, Edward (Scientific Research Publishing https://dx.doi.org/10.4236/msce.2015.39002, 2015-09-08)
    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, pages 8-14. Available from: https://dx.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 ...