SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (2): 420-428.DOI: 10.1016/j.cjche.2019.05.016

• Separation Science and Engineering • 上一篇    下一篇

Potential use of nanofiltration like-forward osmosis membranes for copper ion removal

Wan Nur Ain Shuhada Abdullah1,2, Sirinan Tiandee3, Woeijye Lau1,2, Farhana Aziz1,2, Ahmad Fauzi Ismail1,2   

  1. 1 Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia;
    2 School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia;
    3 Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, 84000 Surat Thani, Thailand
  • 收稿日期:2019-03-13 修回日期:2019-05-12 出版日期:2020-02-28 发布日期:2020-05-21
  • 通讯作者: Woeijye Lau
  • 基金资助:
    The authors gratefully acknowledge the financial support provided by the Malaysian Ministry of Education (MoE) under the Fundamental Research Grant Scheme (Grant No. R.J130000.7851.5F017) and Universiti Teknologi Malaysia (UTM) under the UTMSHINE Signature Grant (Grant No. Q.J130000.2451.07G79).

Potential use of nanofiltration like-forward osmosis membranes for copper ion removal

Wan Nur Ain Shuhada Abdullah1,2, Sirinan Tiandee3, Woeijye Lau1,2, Farhana Aziz1,2, Ahmad Fauzi Ismail1,2   

  1. 1 Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia;
    2 School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia;
    3 Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus, 84000 Surat Thani, Thailand
  • Received:2019-03-13 Revised:2019-05-12 Online:2020-02-28 Published:2020-05-21
  • Contact: Woeijye Lau
  • Supported by:
    The authors gratefully acknowledge the financial support provided by the Malaysian Ministry of Education (MoE) under the Fundamental Research Grant Scheme (Grant No. R.J130000.7851.5F017) and Universiti Teknologi Malaysia (UTM) under the UTMSHINE Signature Grant (Grant No. Q.J130000.2451.07G79).

摘要: The discharge of industrial effluent containing heavy metal ions would cause water pollution if such effluent is not properly treated. In this work, the performance of emerging nanofiltration (NF) like-forward osmosis (FO) membrane was evaluated for its efficiency to remove copper ion from water. Conventionally, copper ion is removed from aqueous solution via adsorption and/or ion-exchange method. The engineered osmosis method as proposed in this work considered four commercial NF membranes (i.e., NF90, DK, NDX and PFO) where their separation performances were accessed using synthetic water sample containing 100 mg·L-1 copper ion under FO and pressure retarded osmosis (PRO) orientation. The findings indicated that all membranes could achieve almost complete removal of copper regardless of membrane orientation without applying external driving force. The high removal rates were in good agreement with the outcomes of the membranes tested under pressuredriven mode at 1MPa. The use of appropriate salts as draw solutes enabled the NF membranes to be employed in engineered osmosis process, achieving a relatively low reverse solute flux. The findings showed that the best performing membrane is PFO membrane in which it achieved >99.4% copper rejection with very minimum reverse solute flux of < 1g·m-2·h-1.

关键词: Nanofiltration, Forward osmosis, Copper, Divalent salt, Water flux

Abstract: The discharge of industrial effluent containing heavy metal ions would cause water pollution if such effluent is not properly treated. In this work, the performance of emerging nanofiltration (NF) like-forward osmosis (FO) membrane was evaluated for its efficiency to remove copper ion from water. Conventionally, copper ion is removed from aqueous solution via adsorption and/or ion-exchange method. The engineered osmosis method as proposed in this work considered four commercial NF membranes (i.e., NF90, DK, NDX and PFO) where their separation performances were accessed using synthetic water sample containing 100 mg·L-1 copper ion under FO and pressure retarded osmosis (PRO) orientation. The findings indicated that all membranes could achieve almost complete removal of copper regardless of membrane orientation without applying external driving force. The high removal rates were in good agreement with the outcomes of the membranes tested under pressuredriven mode at 1MPa. The use of appropriate salts as draw solutes enabled the NF membranes to be employed in engineered osmosis process, achieving a relatively low reverse solute flux. The findings showed that the best performing membrane is PFO membrane in which it achieved >99.4% copper rejection with very minimum reverse solute flux of < 1g·m-2·h-1.

Key words: Nanofiltration, Forward osmosis, Copper, Divalent salt, Water flux