Evaluation of Halloysite Nanotube-Loaded Chitosan-Based Nanocomposite Membranes for Water Desalination by Pervaporation


Unugul T., UĞUR NİGİZ F.

WATER AIR AND SOIL POLLUTION, vol.233, no.2, 2022 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 233 Issue: 2
  • Publication Date: 2022
  • Doi Number: 10.1007/s11270-022-05505-z
  • Title of Journal : WATER AIR AND SOIL POLLUTION
  • Keywords: Chitosan, Halloysite nanotube, Pervaporative desalination, THIN-FILM NANOCOMPOSITE, POLYETHERSULFONE ULTRAFILTRATION MEMBRANE, GRAPHENE OXIDE, SEAWATER DESALINATION, COMPOSITE MEMBRANES, HOLLOW-FIBER, PERFORMANCE, ENERGY, POLYSULFONE, FABRICATION

Abstract

In this study, halloysite nanotube (HNT)-loaded chitosan-based nanocomposite membranes were synthesized and used for pervaporative desalination of water. Structural and morphological properties of the nanocomposite membranes were investigated. The effects of the HNT content, feed temperature, and feed NaC1 concentration on the flux and salt rejection were investigated. As the HNT content was increased, the degree of swelling decreased. At all temperature values, higher than 99% of salt rejections were achieved. The flux value increased from 1.63 to 4.89 kg/m(2)h, when the HNT content increased from 0 to 20 wt% at 30 degrees C. While the highest salt rejection value was obtained as 99.90% using the 10 wt% HNT-loaded nanocomposite membrane, the highest flux value was obtained as 5.81 kg/m(2)h using the 20 wt% HNT-loaded membrane at 50 degrees C. The pervaporation desalination results showed that HNT simultaneously increased the swelling resistance and the separation capability of the chitosan membrane.