FABRICATION AND CHARACTERIZATION OF THE THIN FILM NANOFIBROUS MEMBRANE WITH ACTIVE LAYER INCORPORATING MULTIWALLED CARBON NANOTUBES FORDESALINATION

Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
View: 127

This Paper With 8 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

DESAL03_016

تاریخ نمایه سازی: 29 دی 1400

Abstract:

Recently, carbon nanotubes (CNTs) have been used in the synthesis of novel thin-film nanocomposite (TFN) membranes for water desalination (Chew & Yong, ۲۰۲۱). TFN membranes, using a polyamide (PA) rejection film of approximately ۱۰۰ nm to a few hundred nm in thickness is supported on a porous substrate, are one of the most common types of nanofiltration (NF) membranes. Among all the approaches for fabricating TFN NF membranes, interfacial polymerization (IP) is the most typical one. Although the active layer is critical to the performance of the TFN NF membrane and has an important influence on the rejection of solutes, recent studies have been conducted that suggest that the morphology of the substrates indicate it has also a significant impact on the performance, as well as the active layer (D. Wang et al., ۲۰۲۱; X. Wang, Ma, Chu, & Hsiao, ۲۰۱۷). Therefore, fabricating a controlled structure in the substrate and then forming an active layer on top of it are two of the major considerations in membrane technology. As far as our knowledge goes, fabrication of the TFN, with an active layer of PA, on a doublelayer nanofibrous substrate has never been reported previously, nor has it been tested in the literature for desalination applications.In this work, the fabrication of the TFN membrane with a double-layer nanofibrous substrate was studied, and the effect of adding functionalized MWCNTs to the rejection layer was investigated.Some characterization method such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and, contact angle (CA) was implied to survey the membrane structure. The performance enhancements in terms of water flux and salt rejection were evaluated in a lab-scale nanofiltration setup. Our work will provide a new understanding for TFN membrane based on MWCNTs.

Authors

R Beigmoradi,

Department of Chemical Engineering, Sahand University of Technology, Tabriz, Iran,Innovation Center for Membrane Technology (ICMT), University of Sistan and Baluchestan,Zahedan, Iran.

A Samimi,

Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, Iran. Innovation Center for Membrane Technology (ICMT), University of Sistan and Baluchestan,Zahedan, Iran.

D Mohebbi-Kalhori

Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, Iran. Innovation Center for Membrane Technology (ICMT), University of Sistan and Baluchestan,Zahedan, Iran.