Article | REF: J2789 V1

Membrane filtration (IO, NF, UF, MF) - Theoretical aspects: transfer mechanisms

Authors: Pierre AIMAR, Patrice BACCHIN, Alain maurel

Publication date: February 10, 2010, Review date: June 1, 2023

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Overview

Français

ABSTRACT

This article analyzes the transfer mechanisms that occur during the reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF) and microfiltration (MF). These methods of liquid-phase separation by permeation through permselective membranes under the action of a pressure gradient involve complex phenomena. The purpose of this theoretical presentation is to enable the user to achieve a better understanding of each of these techniques in order to at best optimize their implementation.

Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.

Read the article

AUTHORS

  • Pierre AIMAR: Chemical Engineering Laboratory UMR CNRS/INP/UPS Paul Sabatier University (Toulouse)

  • Patrice BACCHIN: Chemical Engineering Laboratory UMR CNRS/INP/UPS Paul Sabatier University (Toulouse)

  • Alain maurel: Consultant

 INTRODUCTION

The aim of this dossier [J 2789] is to analyze the transfer mechanisms involved in membrane filtrations such as :

  • OI reverse osmosis;

  • nanofiltration NF ;

  • UF ultrafiltration;

  • MFT microfiltration;

so that the user can identify the most limiting transfer mechanisms for a given application, and understand the influence of operating conditions on process operation.

After a few general points, we present the theoretical considerations required to analyze the transfer mechanisms that determine process operation: filtration speed, material accumulation and selectivity. This dossier forms the theoretical basis on which the [J 2 790v2] dossier is based, providing the theoretical tools required for process design and optimization. In simplified terms, this file presents the cause of the phenomena (the transfer mechanisms involved), while the [J 2 790v2] file presents the consequences of these phenomena on process efficiency (permeability and selectivity).

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Water technologies

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Membrane filtration (RO, NF, UF, MFT)