SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 56 ›› Issue (4): 33-45.DOI: 10.1016/j.cjche.2022.06.027

• Full Length Article • 上一篇    下一篇

Effective desalination and anti-biofouling performance via surface immobilized MWCNTs on RO membrane

Aneela Sabir1,3, Wail Falath1,4, Muhammad Shafiq3, Nafisa Gull3, Maria Wasim3, Karl I. Jacob1,2   

  1. 1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA;
    2. G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA;
    3. Institute of Polymer of Textile Engineering, University of the Punjab, Lahore 54590, Pakistan;
    4. Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
  • 收稿日期:2022-03-22 修回日期:2022-05-26 出版日期:2023-04-28 发布日期:2023-06-13
  • 通讯作者: Aneela Sabir,E-mail:aneela.ipte@pu.edu.pk

Effective desalination and anti-biofouling performance via surface immobilized MWCNTs on RO membrane

Aneela Sabir1,3, Wail Falath1,4, Muhammad Shafiq3, Nafisa Gull3, Maria Wasim3, Karl I. Jacob1,2   

  1. 1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA;
    2. G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA;
    3. Institute of Polymer of Textile Engineering, University of the Punjab, Lahore 54590, Pakistan;
    4. Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
  • Received:2022-03-22 Revised:2022-05-26 Online:2023-04-28 Published:2023-06-13
  • Contact: Aneela Sabir,E-mail:aneela.ipte@pu.edu.pk

摘要: Desalination is considered a viable method to overcome the issue of water scarcity either from waste water or seawater. For this purpose, this study employed a facile approach to develop surface immobilized oxidized-MWCNTs (o-MWCNTs) onto crosslinked polyvinyl alcohol (PVA) membrane. Firstly, modified polysulphone substrate was synthesized on to which crosslinked PVA layer was spread onto it. PVA layer act as active layer for surface immobilization of o-MWCNTs in varying concentration. The functional group analysis, morphology and roughness of membranes surface was conducted out using FTIR, SEM and AFM respectively. The results showed that modified membranes, immobilized o-MWCNTs enhanced the salt rejection (Na2SO4) upto 99.8%. After contacting with Escherichia coli and Staphylococcus aureus for 2.5 h the bacteria mortalities of the fabricated membrane could reach 96.9%. Furthermore, the anti-biofouling tests showed that OP-MWCNTs (1–5) modified membranes have higher anti-biofouling property than the control membrane.

关键词: Surface immobilized, Reverse osmosis, Multi walled carbon nanotubes, Nanomaterials

Abstract: Desalination is considered a viable method to overcome the issue of water scarcity either from waste water or seawater. For this purpose, this study employed a facile approach to develop surface immobilized oxidized-MWCNTs (o-MWCNTs) onto crosslinked polyvinyl alcohol (PVA) membrane. Firstly, modified polysulphone substrate was synthesized on to which crosslinked PVA layer was spread onto it. PVA layer act as active layer for surface immobilization of o-MWCNTs in varying concentration. The functional group analysis, morphology and roughness of membranes surface was conducted out using FTIR, SEM and AFM respectively. The results showed that modified membranes, immobilized o-MWCNTs enhanced the salt rejection (Na2SO4) upto 99.8%. After contacting with Escherichia coli and Staphylococcus aureus for 2.5 h the bacteria mortalities of the fabricated membrane could reach 96.9%. Furthermore, the anti-biofouling tests showed that OP-MWCNTs (1–5) modified membranes have higher anti-biofouling property than the control membrane.

Key words: Surface immobilized, Reverse osmosis, Multi walled carbon nanotubes, Nanomaterials