A Bilayered Structure Comprised of Functionalized Carbon Nanotubes for Desalination by Membrane Distillation

Madhuleena Bhadra, Sagar Roy, Somenath Mitra

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The development of a novel carbon nanotube (CNT) immobilized membrane comprised of a double-layer structure is presented for water desalination by membrane distillation. The bilayered structure is comprised of CNTs functionalized with a hydrophobic octadecyl amine group on the feed side and carboxylated CNTs on the permeate side. The latter is more hydrophilic. The hydrophobic CNTs provide higher water vapor permeation, while the hydrophilic CNTs facilitate the condensation of water vapor. Together, these led to superior performance, and flux in a direct contact membrane distillation mode was found to be as high as 121 kg/m2h at 80 °C. The bilayered membrane represented an enhancement of 70% over the unmodified membrane and 37% over a membrane which had a monolayered structure where only the feed side was CNT-modified.

Original languageEnglish (US)
Pages (from-to)19507-19513
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number30
DOIs
StatePublished - Aug 3 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Fingerprint

Dive into the research topics of 'A Bilayered Structure Comprised of Functionalized Carbon Nanotubes for Desalination by Membrane Distillation'. Together they form a unique fingerprint.

Cite this