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Jan Kujawski - One of the best experts on this subject based on the ideXlab platform.

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneaux, Marek Bryjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneau, Marek Yjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

Wojciech Kujawski - One of the best experts on this subject based on the ideXlab platform.

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneaux, Marek Bryjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneau, Marek Yjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

Ewa Wierzbowska - One of the best experts on this subject based on the ideXlab platform.

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneaux, Marek Bryjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneau, Marek Yjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

Joanna Kujawa - One of the best experts on this subject based on the ideXlab platform.

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneaux, Marek Bryjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

  • influence of hydrophobization conditions and ceramic Membranes pore size on their properties in vacuum membrane distillation of water organic solvent mixtures
    Journal of Membrane Science, 2016
    Co-Authors: Wojciech Kujawski, Joanna Kujawa, Ewa Wierzbowska, Sophie Cerneau, Marek Yjak, Jan Kujawski
    Abstract:

    Abstract The initially hydrophilic micro- and macroporous ceramic Membranes were successfully hydrophobized by grafting with fluoroalkylsilane (FAS) molecules. The influence of diverse parameters (e.g. type of molecule, duration of grafting, concentration of FAS solution, type of solvent) on the resulting hydrophobic surface was investigated. The liquid entry pressure of water (LEPw) was used as a measure of the hydrophobization efficiency. The prepared Membranes were subsequently investigated in vacuum membrane distillation (VMD) process using pure water and water–organic solvent solutions as feed mixtures. It was found that permeate flux of pure water is strictly correlated with LEPw value. The selectivity of Membranes in contact with water–organic mixtures depends strongly on the pore size of the hydrophobized membrane. Microporous membrane are much less efficient in the Separation of organics from water (Separation factor of ethyl acetate – EtAc in the range 1.3–30) comparing with macroporous ones (Separation factor of EtAc in the range 32–60). The results were also discussed assuming the various mechanism of transports through porous ceramic Membranes. These latter results were additionally compared with the results obtained for hydrophobic polymeric Membranes (Separation factor of EtAc in the range 25–450).

Saeed Shirazian - One of the best experts on this subject based on the ideXlab platform.

  • anfis pattern for molecular Membranes Separation optimization
    Journal of Molecular Liquids, 2019
    Co-Authors: Mashallah Rezakazemi, Amir Mosavi, Saeed Shirazian
    Abstract:

    Abstract In this work, molecular Separation of aqueous-organic was simulated by using combined soft computing-mechanistic approaches. The considered Separation system was a microporous membrane contactor for Separation of benzoic acid from water by contacting with an organic phase containing extractor molecules. Indeed, extractive Separation is carried out using membrane technology where complex of solute-organic is formed at the interface. The main focus was to develop a simulation methodology for prediction of concentration distribution of solute (benzoic acid) in the feed side of the membrane system, as the removal efficiency of the system is determined by concentration distribution of the solute in the feed channel. The pattern of Adaptive Neuro-Fuzzy Inference System (ANFIS) was optimized by finding the optimum membership function, learning percentage, and a number of rules. The ANFIS was trained using the extracted data from the CFD simulation of the membrane system. The comparisons between the predicted concentration distribution by ANFIS and CFD data revealed that the optimized ANFIS pattern can be used as a predictive tool for simulation of the process. The R2 of higher than 0.99 was obtained for the optimized ANFIS model. The main privilege of the developed methodology is its very low computational time for simulation of the system and can be used as a rigorous simulation tool for understanding and design of membrane-based systems.