Extraction of Glucose by Supported Liquid Membrane using Polyethersulfone Flat Sheet Membrane Support

Abstract

Sugar is released during biomass hydrolysis together with unwanted inhibitory compounds such as acetic acid, furfural and hydromethylfurfural. The extraction of particular sugar prior to fermentation process is needed in order to increase the yield of biofuel generated from biomass resources. In the current study, glucose was extracted from the aqueous solution using supported liquid membrane (SLM) system. Polyethersulfone (PES) flat sheet membrane support was fabricated using 15 wt.% PES, 42.5 wt.% DMAc and 42.5 wt.% PEG 200. Liquid membrane was formulated using 2-ethyl hexanol and methyl cholate as solvent and carrier, respectively. The effect of several parameters involved in SLM system such as type of diluent and flowrate of feed and stripping phase on the extraction performance of glucose were studied. About 52.77% of glucose was successfully extracted from aqueous solution using SLM system with 0.01M of methyl cholate in 2-ethyl hexanol. Using simulated biomass hydrolysate solution, almost 54.55% of glucose and 51.08% of xylose were successfully extracted using the SLM system.

Study on stripping phase conditions on the levulinic acid extraction using supported liquid membrane

“…Using different values can cause different pressures existing in the LM, thus, leading to the leakage of LM from the matrix support [22]. The effect of different flow rates as 1.35, 2.07 and 2.79 L/h at both feed and stripping streams in the SLM for glucose extraction were investigated by [23]. Based on the study, increasing the flow rate of both streams and reducing the boundary layer thickness between the phases and membrane lead to a high degree of glucose extraction and recovery.…”