Next Article in Journal
Exploring the Gas-Permeation Properties of Proton-Conducting Membranes Based on Protic Imidazolium Ionic Liquids: Application in Natural Gas Processing
Next Article in Special Issue
Self-Cleaning Nanocomposite Membranes with Phosphorene-Based Pore Fillers for Water Treatment
Previous Article in Journal
A Novel Time Lag Method for the Analysis of Mixed Gas Diffusion in Polymeric Membranes by On-Line Mass Spectrometry: Pressure Dependence of Transport Parameters
Previous Article in Special Issue
The Formation of Polyvinylidene Fluoride Membranes with Tailored Properties via Vapour/Non-Solvent Induced Phase Separation
Open AccessArticle

On-Line NIR to Regulate Pervaporation Process: Application for Dehydration

Aix-Marseille Université, CNRS, Centrale Marseille, M2P2 UMR 7340, Equipe Procédés Membranaires (EPM), Europôle de l’Arbois, BP80, Pavillon Laennec, Hall C, 13545 Aix-en-Provence CEDEX, France
SANOFI, Chemin de Meteline, 04200 Sisteron, France
Author to whom correspondence should be addressed.
Membranes 2018, 8(3), 74;
Received: 6 August 2018 / Revised: 21 August 2018 / Accepted: 21 August 2018 / Published: 4 September 2018
The regeneration of volatile organic solvents via dehydration tests, from 90 wt %, was evaluated by pervaporation using an on-line near-infrared (NIR) spectrometer. Experiments were performed using a bis(triethoxysilyl)methane (BTESM)-based ceramic HybSi® membrane at temperatures of 20, 30 and 40 °C. The presence of an on-line NIR allows continuous monitoring of the process without sampling, and quickly estimates mass fractions of species in the retentate. Dehydration tests were performed at 30 °C in order to confirm the on-line NIR reproducibility, and closely matched results obtained with an off-line densimeter. These results validated the usefulness of the on-line NIR and provided the same precision whatever the mass fraction in the retentate. A good on-line reproducibility was found, with an agreement between the on-line NIR and off-line densimeter, obtaining an average deviation of ±0.058 wt %, ±0.17 wt % and ±0.049 wt %, respectively, at 20, 30 and 40 °C. View Full-Text
Keywords: on-line near-infrared spectroscopy; pervaporation; HybSi® membrane; organic purification on-line near-infrared spectroscopy; pervaporation; HybSi® membrane; organic purification
Show Figures

Figure 1

MDPI and ACS Style

La Rocca, T.; Carretier, E.; Clair, T.; Etienne, M.; Moulin, P. On-Line NIR to Regulate Pervaporation Process: Application for Dehydration. Membranes 2018, 8, 74.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop