Amino functionalized carbon nanofibers membrane for forward osmosis application

In this work cellulous triacetate (CTA) membranes were modified by carbon nanofibers (CNFs) and amino functionalized CNFs via phase inversion method for the forward osmosis (FO) application. At the first CNFs were functionalized with amine groups in order to make a hydrophilic property. Then 0.5 wt% of carbon nanofibers and amino functionalized CNFs were added into casting solution as additive to improve the performance of FO membranes. The prepared FO membranes were characterized by FESEM and hydrophilicity measurement. Hydrophilicity and porosity of fabricated CNFs membranes were enhanced with adding functionalized CNFs with hydrophilic functional group attached on CNFs. The FO performance was evaluated using 10 mM NaCl solution as feed solution and 1 M NaCl solution as a draw solution. The modified membrane exhibited higher water flux and lower reverse salt flux in comparison with the neat CTA membrane and three commercial membranes. The water flux of the prepared membrane reached to a maximum of 18 L/m2 h which is above 2 times as high as that of unmodified membrane

کلیدواژه ها:

Cellulous triacetate membrane ، Forward osmosis ، Desalination ، Functionalized carbon nanofibers