Does anyone know which membrane is good for bioethanol purification?

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Ernest O Nnadi

Marjani et al (2013) reported success with Polyamide-Carbon Nanotube Composite Membranes' Marjani et al (2013) 'Ethanol Purification Using Polyamide-Carbon Nanotube Composite Membranes' Polymer Engineering & Science Volume 54, Issue 4,

http://onlinelibrary.wiley.com/doi/10.1002/pen.23635/pdf