Study of transfer of alcohol (methanol, ethanol, isopropanol) during nanofiltration in water/alcohol mixtures - Université de Rennes Access content directly
Journal Articles Journal of Membrane Science Year : 2020

Study of transfer of alcohol (methanol, ethanol, isopropanol) during nanofiltration in water/alcohol mixtures

Abstract

This study aimed at studying the impact of alcohol presence in water/alcohol mixtures on the performances of the NF 270 polypiperazine amide nanofiltration membrane (Dow Filmtec). Three alcohols of different physico-chemical characteristics were selected methanol, ethanol and isopropanol. NF was achieved for several water/alcohol mixtures of different viscosity (up to twice that of water) and dielectric constant, both known to play a role in separation performances. In presence of alcohol (up to 23 vol%, 30 vol% and 21 vol% for methanol, ethanol and isopropanol, respectively) the flux significantly decreased when compared to that of water. This study provides insights in the alcohol transfer mechanisms allowing to select Spiegler and Kedem and reject Solution-Diffusion, both coupled with the film theory. Discussion highlights how surprisingly the membrane swelling can sometimes have no significant impact on the membrane resistance because opposite phenomena can be compensated such as pore radius increase simultaneously with membrane thickness increase. © 2020
Fichier principal
Vignette du fichier
Nguyen et al-2020-Study of transfer of alcohol (methanol, ethanol, isopropanol) during.pdf (2.37 Mo) Télécharger le fichier
Nguyen-2020-mmc1.pdf (1.12 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02499967 , version 1 (17-03-2020)

Identifiers

Cite

T.V.N. Nguyen, L. Paugam, P. Rabiller, M. Rabiller-Baudry. Study of transfer of alcohol (methanol, ethanol, isopropanol) during nanofiltration in water/alcohol mixtures. Journal of Membrane Science, 2020, 601, pp.117907. ⟨10.1016/j.memsci.2020.117907⟩. ⟨hal-02499967⟩
48 View
157 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More