I am interested in membrane technology as it becomes important in many fields such as water and wastewater treatment Address: Kajang, Selangor, Malaysia
Journal of Biochemistry, Microbiology and Biotechnology
This work is aimed to develop polyethersulfone (PES) nanofiltration (NF) membrane with layer-by-l... more This work is aimed to develop polyethersulfone (PES) nanofiltration (NF) membrane with layer-by-layer (LBL) polyelectrolytes of chitosan (CHI) and poly(acrylic acid) (PAA) for xylitol purification from fermentation broth. Different number of bilayers and type of terminating layer were manipulated for producing more hydrophilicity, negatively charged with improved performance compared to pristine PES membrane. Successful deposition of polyelectrolyte layers onto PES membrane was able to be proven using various tests such as contact angle, Zetasizer and FT-IR. The results obtained have proven that LBL can develop PES membrane with higher resistance to fouling. From Zeta potential analysis, the value of pristine PES membrane's negativity confirmed the theory of negatively charged substrate for LDL. The negative value of PES membrane increased from -16.5 mV to -32.7 mV after being modified to PES (CHI/PAA)6. From FT-IR spectra, the formation of CHI/PAA complexes on the membrane'...
Xylitol is a valuable product in medicine and food fields and can be produced mainly by two proce... more Xylitol is a valuable product in medicine and food fields and can be produced mainly by two processes: (1) chemically with catalyst and (2) bio technologically with yeast, fungi or bacteria. This xylitol is commonly present in mixture form which consist of xylitol, xylose and arabinose. Thus purification is required to increase its value either by crystallization, adsorption or membrane technology. The aim of this work is to investigate the influence of using different nanofiltration (NF) membranes to achieve high purity of xylitol from model solution. In order to achieve a desirable purity of xylitol, in-house synthesized NF membranes from pure PES, PES/SiO2 and PES/Pluronic f127 were used in this study. These NF membranes were fabricated via phase inversion method and further characterized to investigate their performances suitable for xylitol purification. To achieve that: a contact angle was used for hydrophilicity, pure water flux (PWF), xylitol permeation and rejection were in...
Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional tech... more Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional techniques (crystallization and adsorption) were used for xylitol purification from fermentation media. Recently, membrane technology received a great attention due to its high performance in xylitol purification. Among renowned copolymers used for polymer blending to produce membranes, pluronic is receiving much attention due to its strong hydrophilic characteristic and could work as pore former and surface modifier. Polyethersulfone (PES) polymer has been reportedly used for polymer blending as it possesses mechanical and chemical stabilities. Therefore, this work demonstrates the preparation of nanofiltration (NF) membrane using: (1) PES and (2) PES blended with 1.71% and 5% of Pluronic (F127), via phase inversion method. All fabricated membranes were subjected to investigations such as contact angle for hydrophilicity and water and solution flux for membrane performance. The findings sho...
Synthesis of Iron Oxide Nanoparticles to Enhance Polysulfone Ultrafiltration Membrane performance... more Synthesis of Iron Oxide Nanoparticles to Enhance Polysulfone Ultrafiltration Membrane performance for Salt Rejection Muneer M. Ba-Abbad*, Abdul Wahab Mohammad, Mohd S. Takriff, Rosiah Rohani, Ebrahim Mahmoudi, Khalefa A. Faneer, Abdelbaki Benamo Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. Gas Processing Centre, Qatar University, P. O. Box 2713 Doha, Qatar. Department of Chemical Engineering, Faculty of Engineering and Petroleum, Hadhramout University of Science &Technology, Mukalla, Hadhramout, Yemen. muneer711@gmail.com
−Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the diff... more −Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the difference in the size of its particles compared to the other sugars. We evaluated the ability of an in-house polyethersulfone (PES) NF membrane to separate xylitol from a simulated broth solution containing xylose and arabinose. Initially, a Box-Behnken design was utilized to optimize the factors that were significantly involved in the recovery of xylitol, such as the concentration of the components, the composition of the solution, and the pressure. The results obtained from the analysis of the experimental response revealed that the fabricated PES membrane was able to retain 92% of the xylitol and remove 50% of the arabinose, with the purity of the xylitol being enhanced accordingly. The results of fouling showed a good membrane performance for long-term filtration. The concentration polarization was dominated by the membrane pores and the charge. It could be concluded that nanofiltration has a high potential to recover xylitol from its corresponding sugars.
Xylitol is a by-product that is obtained from the production of bioethanol. A lignocellulosic bio... more Xylitol is a by-product that is obtained from the production of bioethanol. A lignocellulosic biomass contains an abundance of xylose that acts as a precursor in the production of xylitol. The xylitol produced from biomass sources through biological route is a cleaner production than the common chemical route, which involves least sustainable processes. However this xylitol may contain other impurities and sugars that are difficult to separate due to their close molecular weights. A highly concentrated xylitol can potentially be obtained through the use of a pressure filtration membrane as a potential cleaner production technology due to the unique properties of the membrane including low energy requirement, high separation performance, and high selectivity between xylitol and sugars. In this work, a specially blended polymeric membrane was synthesized, characterized and tested in the recovery of xylitol from a synthetic biomass fermentation solution. Pluronic f127 at different ratios of 1, 3, and 5% was blended with Polyethersulfone (PES) to modify the PES membrane. The effect of the Pluronic ratio on the selectivity of the PES membrane in the separation of xylitol from sugars and also the fouling mitigation effect under the presence of Pluronic in the membrane were investigated. The results showed an improvement in the hydrophilicity of the membrane, where the contact angle of the pure PES membrane dropped from 80 to 65 following the addition of Pluronic at different ratios. The water flux also increased with an increase in the Pluronic ratio. The rejection of xylitol was found to decrease in the presence of Pluronic, and a reasonable xylitol selectivity was obtained. Surprisingly, the selectivity of the membrane towards xylitol was further enhanced by the presence of ethanol in the synthetic fermentation solution. Therefore, the PES blended Pluronic membrane was shown to have a great potential for the separation of xylitol from sugars.
The main target of membrane technologies such as the Ultrafiltration (UF), Nanofiltration (NF) an... more The main target of membrane technologies such as the Ultrafiltration (UF), Nanofiltration (NF) and Reverse osmosis (RO) is to produce better filtration and separation of organic and inorganic substance from water as well as for longer life of the membrane. The phase inversion method is a well-known method to fabricate UF, NF and RO membranes for different application. The UF membrane is widely used in separation of macromolecules from solution as pretreatment stage with higher efficiency in hybrid process. The UF membrane made by pure polymer showed low flux, which affect on process performance of separation. The Polysulphone (PSF) is the most common polymer used in UF membrane which a hydrophobic material is making its surface prone to fouling due to adsorptive mechanism. This limitation of UF membranes have been solved by blended with nanoparticles incorporated membranes which showed significant enhancement on permeability, surface hydrophilicity, mechanical properties and other properties such as the selectivity. The main objective of this study to modify of UF membrane by blended with new composite nano-material for higher rejection of salt and organic substances. The graphene-zinc iron oxide composite as new nano-material was synthesized by sol gel method at low temperature of preparation. The composite was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) to show the structure, morphology and particle size of nanoparticles. Thermal decomposition was determined using thermogravimetric–differential scanning calorimetry (TGDSC). The results showed that cubic system of zinc iron oxide nanoparticles with 8 nm of crystal size was obtained using XRD. The morphology using TEM showed zinc iron oxide composite graphene as layer of nanoparticles with size lower
−Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the diff... more −Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the difference in the size of its particles compared to the other sugars. We evaluated the ability of an in-house polyethersulfone (PES) NF membrane to separate xylitol from a simulated broth solution containing xylose and arabinose. Initially, a Box-Behnken design was utilized to optimize the factors that were significantly involved in the recovery of xylitol, such as the concentration of the components, the composition of the solution, and the pressure. The results obtained from the analysis of the experimental response revealed that the fabricated PES membrane was able to retain 92% of the xylitol and remove 50% of the arabinose, with the purity of the xylitol being enhanced accordingly. The results of fouling showed a good membrane performance for long-term filtration. The concentration polarization was dominated by the membrane pores and the charge. It could be concluded that nanofiltration has a high potential to recover xylitol from its corresponding sugars.
Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional tech... more Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional techniques (crystallization and adsorption) were used for xylitol purification from fermentation media. Recently, membrane technology received a great attention due to its high performance in xylitol purification. Among renowned copolymers used for polymer blending to produce membranes, pluronic is receiving much attention due to its strong hydrophilic characteristic and could work as pore former and surface modifier. Polyethersulfone (PES) polymer has been reportedly used for polymer blending as it possesses mechanical and chemical stabilities. Therefore, this work demonstrates the preparation of nanofiltration (NF) membrane using: (1) PES and (2) PES blended with 1.71% and 5% of Pluronic (F127), via phase inversion method. All fabricated membranes were subjected to investigations such as contact angle for hydrophilicity and water and solution flux for membrane performance. The findings showed increasing in water flux from 24.6 L/m 2 .h to 70.2 L/m 2 .h as 5% of Pluronic added. Further, the hydrophilicity improved from 80.1 ± 1.93 o to 72 ±0.3 o and 67.6 ± 0.72 o when 1.71 and 5% of Pluronic F127 added respectively. Therefore, the addition of Pluronic f127 has a great impact on PES membrane for xylitol permeation. Abstrak Memperoleh ketulenan yang tinggi bagi xilitol merupakan salah satu batu loncatan di dalam industri perubatan. Terdapat banyak teknik konvensional (penghabluran dan penjerapan) yang telah digunakan untuk penulenan xilitol daripada media penapaian. Baru-baru ini, teknologi membran banyak menarik perhatian dengan prestasinya yang bagus dalam penulenan xilitol. Antara kopolimer yang sering digunakan untuk campuran polimer dalam penghasilan membran adalah pluronik yang telah menerima perhatian kerana sifat hidrofiliknya dan boleh membantu dalam pembentukan liang serta pengubahsuai permukaan membran. Polimer polietersulfon (PES) telah dilaporkan digunakan untuk polimer campuran kerana ia mempunyai kestabilan mekanikal dan kimia. Oleh itu, kerja ini menunjukkan penyediaan membran penurasan-nano (NF) menggunakan: (1) PES dan (2) PES dicampur dengan 1.71% dan 5% Pluronik (f127), melalui kaedah fasa songsangan. Kesemua membran yang dihasilkan dicirikan menggunakan sudut sentuhan untuk sifat hidrofilik dan fluks air serta larutan bagi prestasi membran. Hasil kajian menunjukkan peningkatan dalam fluks air daripada 24.6 L/m 2 .h kepada 70.2 L/m 2 .h apabila 5% Pluronik F127 ditambah. Selanjutnya, sifat hidrofilik membran bertambah baik iaitu daripada 80.1 ± 1.93 o kepada 72 ± 0.3 o dan 67.6 ± 0.72 o apabila 1.71 dan 5% Pluronik F127 ditambah. Didapati penambahan Pluronik F127 memberi kesan yang besar ke atas membran PES untuk penyerapan xilitol.
Xylitol is an important raw material in cosmetic, pharmaceutical and food industries due to its n... more Xylitol is an important raw material in cosmetic, pharmaceutical and food industries due to its non-cariogenic sweetener properties. Xylitol in mixed sugars which obtained from fermentation media could be purified through adsorption or crystallisation. Xylitol may leach out during adsorption while the complexity of the fermentation broth in crystallisation has limits the utilisation of these techniques. The use of membrane filtration technique is foreseen could avoid these limitations as its separation is based on the solutes size, shape and/or molecular weight ranges. In this work, special blend polymer membranes were synthesised, characterised and tested in the xylitol recovery from synthetic solution. Pluronic F127 at 1 %, 3 %, and 5 % was blended with polyethersulfone (PES) to modify membranes. The effect of Pluronic ratio on the membrane selectivity for xylitol separation from sugars and also the fouling mitigation effect under Pluronic presence in the membranes were investigated. The results showed an improvement in the membrane hydrophilicity, where the contact angle of pure PES membrane has dropped from 80 ° to 65 ° in addition of Pluronic at different ratios. The water flux has also increased as the Pluronic ratio increased. The rejection of xylitol has found to decrease in Pluronic presence. Surprisingly, the membrane selectivity has enhanced greatly as desired. The PES blend Pluronic membranes have shown promising future in xylitol separation from sugars.
Journal of Biochemistry, Microbiology and Biotechnology
This work is aimed to develop polyethersulfone (PES) nanofiltration (NF) membrane with layer-by-l... more This work is aimed to develop polyethersulfone (PES) nanofiltration (NF) membrane with layer-by-layer (LBL) polyelectrolytes of chitosan (CHI) and poly(acrylic acid) (PAA) for xylitol purification from fermentation broth. Different number of bilayers and type of terminating layer were manipulated for producing more hydrophilicity, negatively charged with improved performance compared to pristine PES membrane. Successful deposition of polyelectrolyte layers onto PES membrane was able to be proven using various tests such as contact angle, Zetasizer and FT-IR. The results obtained have proven that LBL can develop PES membrane with higher resistance to fouling. From Zeta potential analysis, the value of pristine PES membrane's negativity confirmed the theory of negatively charged substrate for LDL. The negative value of PES membrane increased from -16.5 mV to -32.7 mV after being modified to PES (CHI/PAA)6. From FT-IR spectra, the formation of CHI/PAA complexes on the membrane'...
Xylitol is a valuable product in medicine and food fields and can be produced mainly by two proce... more Xylitol is a valuable product in medicine and food fields and can be produced mainly by two processes: (1) chemically with catalyst and (2) bio technologically with yeast, fungi or bacteria. This xylitol is commonly present in mixture form which consist of xylitol, xylose and arabinose. Thus purification is required to increase its value either by crystallization, adsorption or membrane technology. The aim of this work is to investigate the influence of using different nanofiltration (NF) membranes to achieve high purity of xylitol from model solution. In order to achieve a desirable purity of xylitol, in-house synthesized NF membranes from pure PES, PES/SiO2 and PES/Pluronic f127 were used in this study. These NF membranes were fabricated via phase inversion method and further characterized to investigate their performances suitable for xylitol purification. To achieve that: a contact angle was used for hydrophilicity, pure water flux (PWF), xylitol permeation and rejection were in...
Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional tech... more Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional techniques (crystallization and adsorption) were used for xylitol purification from fermentation media. Recently, membrane technology received a great attention due to its high performance in xylitol purification. Among renowned copolymers used for polymer blending to produce membranes, pluronic is receiving much attention due to its strong hydrophilic characteristic and could work as pore former and surface modifier. Polyethersulfone (PES) polymer has been reportedly used for polymer blending as it possesses mechanical and chemical stabilities. Therefore, this work demonstrates the preparation of nanofiltration (NF) membrane using: (1) PES and (2) PES blended with 1.71% and 5% of Pluronic (F127), via phase inversion method. All fabricated membranes were subjected to investigations such as contact angle for hydrophilicity and water and solution flux for membrane performance. The findings sho...
Synthesis of Iron Oxide Nanoparticles to Enhance Polysulfone Ultrafiltration Membrane performance... more Synthesis of Iron Oxide Nanoparticles to Enhance Polysulfone Ultrafiltration Membrane performance for Salt Rejection Muneer M. Ba-Abbad*, Abdul Wahab Mohammad, Mohd S. Takriff, Rosiah Rohani, Ebrahim Mahmoudi, Khalefa A. Faneer, Abdelbaki Benamo Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. Research Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. Gas Processing Centre, Qatar University, P. O. Box 2713 Doha, Qatar. Department of Chemical Engineering, Faculty of Engineering and Petroleum, Hadhramout University of Science &Technology, Mukalla, Hadhramout, Yemen. muneer711@gmail.com
−Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the diff... more −Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the difference in the size of its particles compared to the other sugars. We evaluated the ability of an in-house polyethersulfone (PES) NF membrane to separate xylitol from a simulated broth solution containing xylose and arabinose. Initially, a Box-Behnken design was utilized to optimize the factors that were significantly involved in the recovery of xylitol, such as the concentration of the components, the composition of the solution, and the pressure. The results obtained from the analysis of the experimental response revealed that the fabricated PES membrane was able to retain 92% of the xylitol and remove 50% of the arabinose, with the purity of the xylitol being enhanced accordingly. The results of fouling showed a good membrane performance for long-term filtration. The concentration polarization was dominated by the membrane pores and the charge. It could be concluded that nanofiltration has a high potential to recover xylitol from its corresponding sugars.
Xylitol is a by-product that is obtained from the production of bioethanol. A lignocellulosic bio... more Xylitol is a by-product that is obtained from the production of bioethanol. A lignocellulosic biomass contains an abundance of xylose that acts as a precursor in the production of xylitol. The xylitol produced from biomass sources through biological route is a cleaner production than the common chemical route, which involves least sustainable processes. However this xylitol may contain other impurities and sugars that are difficult to separate due to their close molecular weights. A highly concentrated xylitol can potentially be obtained through the use of a pressure filtration membrane as a potential cleaner production technology due to the unique properties of the membrane including low energy requirement, high separation performance, and high selectivity between xylitol and sugars. In this work, a specially blended polymeric membrane was synthesized, characterized and tested in the recovery of xylitol from a synthetic biomass fermentation solution. Pluronic f127 at different ratios of 1, 3, and 5% was blended with Polyethersulfone (PES) to modify the PES membrane. The effect of the Pluronic ratio on the selectivity of the PES membrane in the separation of xylitol from sugars and also the fouling mitigation effect under the presence of Pluronic in the membrane were investigated. The results showed an improvement in the hydrophilicity of the membrane, where the contact angle of the pure PES membrane dropped from 80 to 65 following the addition of Pluronic at different ratios. The water flux also increased with an increase in the Pluronic ratio. The rejection of xylitol was found to decrease in the presence of Pluronic, and a reasonable xylitol selectivity was obtained. Surprisingly, the selectivity of the membrane towards xylitol was further enhanced by the presence of ethanol in the synthetic fermentation solution. Therefore, the PES blended Pluronic membrane was shown to have a great potential for the separation of xylitol from sugars.
The main target of membrane technologies such as the Ultrafiltration (UF), Nanofiltration (NF) an... more The main target of membrane technologies such as the Ultrafiltration (UF), Nanofiltration (NF) and Reverse osmosis (RO) is to produce better filtration and separation of organic and inorganic substance from water as well as for longer life of the membrane. The phase inversion method is a well-known method to fabricate UF, NF and RO membranes for different application. The UF membrane is widely used in separation of macromolecules from solution as pretreatment stage with higher efficiency in hybrid process. The UF membrane made by pure polymer showed low flux, which affect on process performance of separation. The Polysulphone (PSF) is the most common polymer used in UF membrane which a hydrophobic material is making its surface prone to fouling due to adsorptive mechanism. This limitation of UF membranes have been solved by blended with nanoparticles incorporated membranes which showed significant enhancement on permeability, surface hydrophilicity, mechanical properties and other properties such as the selectivity. The main objective of this study to modify of UF membrane by blended with new composite nano-material for higher rejection of salt and organic substances. The graphene-zinc iron oxide composite as new nano-material was synthesized by sol gel method at low temperature of preparation. The composite was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) to show the structure, morphology and particle size of nanoparticles. Thermal decomposition was determined using thermogravimetric–differential scanning calorimetry (TGDSC). The results showed that cubic system of zinc iron oxide nanoparticles with 8 nm of crystal size was obtained using XRD. The morphology using TEM showed zinc iron oxide composite graphene as layer of nanoparticles with size lower
−Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the diff... more −Nanofiltration (NF) membranes may offer a good route for the recovery of xylitol due to the difference in the size of its particles compared to the other sugars. We evaluated the ability of an in-house polyethersulfone (PES) NF membrane to separate xylitol from a simulated broth solution containing xylose and arabinose. Initially, a Box-Behnken design was utilized to optimize the factors that were significantly involved in the recovery of xylitol, such as the concentration of the components, the composition of the solution, and the pressure. The results obtained from the analysis of the experimental response revealed that the fabricated PES membrane was able to retain 92% of the xylitol and remove 50% of the arabinose, with the purity of the xylitol being enhanced accordingly. The results of fouling showed a good membrane performance for long-term filtration. The concentration polarization was dominated by the membrane pores and the charge. It could be concluded that nanofiltration has a high potential to recover xylitol from its corresponding sugars.
Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional tech... more Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional techniques (crystallization and adsorption) were used for xylitol purification from fermentation media. Recently, membrane technology received a great attention due to its high performance in xylitol purification. Among renowned copolymers used for polymer blending to produce membranes, pluronic is receiving much attention due to its strong hydrophilic characteristic and could work as pore former and surface modifier. Polyethersulfone (PES) polymer has been reportedly used for polymer blending as it possesses mechanical and chemical stabilities. Therefore, this work demonstrates the preparation of nanofiltration (NF) membrane using: (1) PES and (2) PES blended with 1.71% and 5% of Pluronic (F127), via phase inversion method. All fabricated membranes were subjected to investigations such as contact angle for hydrophilicity and water and solution flux for membrane performance. The findings showed increasing in water flux from 24.6 L/m 2 .h to 70.2 L/m 2 .h as 5% of Pluronic added. Further, the hydrophilicity improved from 80.1 ± 1.93 o to 72 ±0.3 o and 67.6 ± 0.72 o when 1.71 and 5% of Pluronic F127 added respectively. Therefore, the addition of Pluronic f127 has a great impact on PES membrane for xylitol permeation. Abstrak Memperoleh ketulenan yang tinggi bagi xilitol merupakan salah satu batu loncatan di dalam industri perubatan. Terdapat banyak teknik konvensional (penghabluran dan penjerapan) yang telah digunakan untuk penulenan xilitol daripada media penapaian. Baru-baru ini, teknologi membran banyak menarik perhatian dengan prestasinya yang bagus dalam penulenan xilitol. Antara kopolimer yang sering digunakan untuk campuran polimer dalam penghasilan membran adalah pluronik yang telah menerima perhatian kerana sifat hidrofiliknya dan boleh membantu dalam pembentukan liang serta pengubahsuai permukaan membran. Polimer polietersulfon (PES) telah dilaporkan digunakan untuk polimer campuran kerana ia mempunyai kestabilan mekanikal dan kimia. Oleh itu, kerja ini menunjukkan penyediaan membran penurasan-nano (NF) menggunakan: (1) PES dan (2) PES dicampur dengan 1.71% dan 5% Pluronik (f127), melalui kaedah fasa songsangan. Kesemua membran yang dihasilkan dicirikan menggunakan sudut sentuhan untuk sifat hidrofilik dan fluks air serta larutan bagi prestasi membran. Hasil kajian menunjukkan peningkatan dalam fluks air daripada 24.6 L/m 2 .h kepada 70.2 L/m 2 .h apabila 5% Pluronik F127 ditambah. Selanjutnya, sifat hidrofilik membran bertambah baik iaitu daripada 80.1 ± 1.93 o kepada 72 ± 0.3 o dan 67.6 ± 0.72 o apabila 1.71 dan 5% Pluronik F127 ditambah. Didapati penambahan Pluronik F127 memberi kesan yang besar ke atas membran PES untuk penyerapan xilitol.
Xylitol is an important raw material in cosmetic, pharmaceutical and food industries due to its n... more Xylitol is an important raw material in cosmetic, pharmaceutical and food industries due to its non-cariogenic sweetener properties. Xylitol in mixed sugars which obtained from fermentation media could be purified through adsorption or crystallisation. Xylitol may leach out during adsorption while the complexity of the fermentation broth in crystallisation has limits the utilisation of these techniques. The use of membrane filtration technique is foreseen could avoid these limitations as its separation is based on the solutes size, shape and/or molecular weight ranges. In this work, special blend polymer membranes were synthesised, characterised and tested in the xylitol recovery from synthetic solution. Pluronic F127 at 1 %, 3 %, and 5 % was blended with polyethersulfone (PES) to modify membranes. The effect of Pluronic ratio on the membrane selectivity for xylitol separation from sugars and also the fouling mitigation effect under Pluronic presence in the membranes were investigated. The results showed an improvement in the membrane hydrophilicity, where the contact angle of pure PES membrane has dropped from 80 ° to 65 ° in addition of Pluronic at different ratios. The water flux has also increased as the Pluronic ratio increased. The rejection of xylitol has found to decrease in Pluronic presence. Surprisingly, the membrane selectivity has enhanced greatly as desired. The PES blend Pluronic membranes have shown promising future in xylitol separation from sugars.
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