The Experts below are selected from a list of 14475 Experts worldwide ranked by ideXlab platform

Kaisong Zhang - One of the best experts on this subject based on the ideXlab platform.

  • effect of silver loaded sodium zirconium phosphate nanoagz nanoparticles incorporation on pes Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

  • Effect of silver loaded sodium zirconium phosphate (nanoAgZ) nanoparticles incorporation on PES Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

Jian Huang - One of the best experts on this subject based on the ideXlab platform.

  • effect of silver loaded sodium zirconium phosphate nanoagz nanoparticles incorporation on pes Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

  • Effect of silver loaded sodium zirconium phosphate (nanoAgZ) nanoparticles incorporation on PES Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

Mengqi Shi - One of the best experts on this subject based on the ideXlab platform.

  • Solvent activation before heat-treatment for improving reverse osmosis Membrane Performance
    Journal of Membrane Science, 2020
    Co-Authors: Mengqi Shi, Wentao Yan, Chenxi Dong, Lifen Liu, Shijie Xie, Congjie Gao
    Abstract:

    Abstract In this work, a novel and simple strategy, i.e., solvent activation before heat-treatment was proposed to improve reverse osmosis (RO) Membrane Performance. This activation strategy is different from that adopted in previous reports. With this strategy, solvent activation was conducted before heat-treatment. While in previous reports, solvent activation was conducted after heat-treatment. By systematic characterization, solvent activation before and after heat-treatment were compared for the first time. The results showed that exchanging the order of solvent activation and heat-treatment created completely different effects on the RO Membrane structures and Performance. Specifically, solvent activation before heat-treatment affected the RO Membrane structures more obviously and was superior in terms of improving RO Membrane Performance. Besides, the solvent activation was discussed deeply. The results showed that it had better choose an activation solvent, which is non-polar and low viscous as well as molecular size is small. By using an appropriate activation solvent, such as hexane, solvent activation before heat-treatment improved the RO Membrane Performance markedly: the flux was improved from 46 ± 1 L m−2· h−1 to 75 ± 5 L m−2 h−1 (by 63%) and meanwhile a high rejection of 98.97 ± 0.08% was retained (the testing condition: 15.5 bar pressure, 2000 ppm NaCl feed and 25 °C). Additionally, an unexpected phenomenon was found: increasing the activation time led to the decrease of flux and increase of rejection, which is because more activation solvent (hexane) molecules remained in the polyamide layer and then impeded the transport of water and salt.

  • Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation Membrane Performance over a wide pressure range
    Chinese Journal of Chemical Engineering, 2019
    Co-Authors: Mengqi Shi, Chenxi Dong, Zhi Wang, Xinxia Tian, Song Zhao, Jixiao Wang
    Abstract:

    Abstract In this work, the effects of support surface pore structures (including surface pore size, surface pore density and surface porosity) on the Performance of thin film composite (TFC) gas separation Membrane over a wide pressure range (from 0.3 to 2.0 MPa) were studied. To fulfill it, the polysulfone (PSf) supports with different surface pore structures were prepared. Two kinds of wide-accepted polymeric Membrane materials, i.e., polyvinylamine (PVAm) and Pebax 1657 copolymer, were used as skin layer materials. We pointed out for the first time that the support surface average pore size and pore density could affect the chain mobility of polymer of skin layer at the support surface pore entrance, then, can affect the TFC Membrane Performance. Besides, we also discussed the effects of support on the TFC Membrane Performance when the feed pressure changes for the first time. This work can provide guidance for choosing a suitable support for TFC gas separation Membrane.

G Arthanareeswaran - One of the best experts on this subject based on the ideXlab platform.

  • effect of silver loaded sodium zirconium phosphate nanoagz nanoparticles incorporation on pes Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

  • Effect of silver loaded sodium zirconium phosphate (nanoAgZ) nanoparticles incorporation on PES Membrane Performance
    Desalination, 2012
    Co-Authors: Jian Huang, G Arthanareeswaran, Kaisong Zhang
    Abstract:

    Abstract Polyethersulfone (PES) based ultrafiltration Membranes were fabricated via phase inversion by adding silver-loaded sodium zirconium phosphate nanoparticles (nanoAgZ) in PES casting solutions. The effect of nanoAgZ concentration on the Membrane Performance, i.e., morphology, hydrophilicity, thermal stability, permeation and antifouling properties was investigated. The results of thermal gravitational analysis (TGA) showed that the thermal stability of the hybrid Membrane had been improved by the addition of nanoAgZ particles. Contact angle results indicated that the hydrophilicity of the modified Membranes was enhanced. The contact angle of the Membrane decreased from 71.5° to 52.6° with the increase of the nanoparticle content in the casting solution. Permeation experiment results showed that the modified PES Membranes demonstrate better separation Performance over the pure PES Membrane. The pure water flux of PES Membrane increased from 82.1 L/m 2  h to 100.6 L/m 2  h with the addition of the nanoparticles. Most importantly, the incorporation of the nanoAgZ particles enhanced the BSA fouling resistance and also the anti-biofouling Performance of the Membrane.

Chenxi Dong - One of the best experts on this subject based on the ideXlab platform.

  • Solvent activation before heat-treatment for improving reverse osmosis Membrane Performance
    Journal of Membrane Science, 2020
    Co-Authors: Mengqi Shi, Wentao Yan, Chenxi Dong, Lifen Liu, Shijie Xie, Congjie Gao
    Abstract:

    Abstract In this work, a novel and simple strategy, i.e., solvent activation before heat-treatment was proposed to improve reverse osmosis (RO) Membrane Performance. This activation strategy is different from that adopted in previous reports. With this strategy, solvent activation was conducted before heat-treatment. While in previous reports, solvent activation was conducted after heat-treatment. By systematic characterization, solvent activation before and after heat-treatment were compared for the first time. The results showed that exchanging the order of solvent activation and heat-treatment created completely different effects on the RO Membrane structures and Performance. Specifically, solvent activation before heat-treatment affected the RO Membrane structures more obviously and was superior in terms of improving RO Membrane Performance. Besides, the solvent activation was discussed deeply. The results showed that it had better choose an activation solvent, which is non-polar and low viscous as well as molecular size is small. By using an appropriate activation solvent, such as hexane, solvent activation before heat-treatment improved the RO Membrane Performance markedly: the flux was improved from 46 ± 1 L m−2· h−1 to 75 ± 5 L m−2 h−1 (by 63%) and meanwhile a high rejection of 98.97 ± 0.08% was retained (the testing condition: 15.5 bar pressure, 2000 ppm NaCl feed and 25 °C). Additionally, an unexpected phenomenon was found: increasing the activation time led to the decrease of flux and increase of rejection, which is because more activation solvent (hexane) molecules remained in the polyamide layer and then impeded the transport of water and salt.

  • Support surface pore structures matter: Effects of support surface pore structures on the TFC gas separation Membrane Performance over a wide pressure range
    Chinese Journal of Chemical Engineering, 2019
    Co-Authors: Mengqi Shi, Chenxi Dong, Zhi Wang, Xinxia Tian, Song Zhao, Jixiao Wang
    Abstract:

    Abstract In this work, the effects of support surface pore structures (including surface pore size, surface pore density and surface porosity) on the Performance of thin film composite (TFC) gas separation Membrane over a wide pressure range (from 0.3 to 2.0 MPa) were studied. To fulfill it, the polysulfone (PSf) supports with different surface pore structures were prepared. Two kinds of wide-accepted polymeric Membrane materials, i.e., polyvinylamine (PVAm) and Pebax 1657 copolymer, were used as skin layer materials. We pointed out for the first time that the support surface average pore size and pore density could affect the chain mobility of polymer of skin layer at the support surface pore entrance, then, can affect the TFC Membrane Performance. Besides, we also discussed the effects of support on the TFC Membrane Performance when the feed pressure changes for the first time. This work can provide guidance for choosing a suitable support for TFC gas separation Membrane.