![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
2. Gas separation techniques
2.1 Permeation separation
This recent technique uses so-called semi-permeable membranes, which have the property of allowing certain molecules to pass through more easily than others (selective permeation). Selectivity is not solely a function of molecule size, which however plays a major role when sizes are very different: the case of obtaining pure hydrogen from mixtures containing N 2 , CH 4 , CO, Ar, etc. The hydrogen that has passed through the membrane constitutes the permeate; its purity can reach 99.9%.
Figure 2 shows the components that make up...
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!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Unit operations. Chemical reaction engineering
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
Gas separation techniques