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Towards green membranes: preparation of cellulose acetate ultrafiltration membranes using methyl lactate as a biosolvent

Medina-Gonzalez, Yaocihuatl and Aimar, Pierre and Lahitte, Jean-Francois and Remigy, Jean-Christophe Towards green membranes: preparation of cellulose acetate ultrafiltration membranes using methyl lactate as a biosolvent. (2011) International Journal of Sustainable Engineering, 4 (1). 75-83. ISSN 1939-7038

(Document in English)

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Official URL: http://dx.doi.org/10.1080/19397038.2010.497230


Ultrafiltration membranes were prepared using cellulose acetate (CA) as a polymer, LiCl and CaCl2 as porogens and methyl-(S)-lactate as a solvent. CA, methyl lactate and the porogens used in this work are obtained from renewable resources; they are biodegradable, non-toxic and non-volatile organic compounds. Flat sheet ultrafiltration membranes were prepared by the phase inversion technique. A molecular weight cut-off between 15 and 35 kDa (polyethylene glycol) and pure water permeability between 13 and 177 litres h21m22 bar21 were obtained. These parameters are in the ideal range for water treatment industry. Improvement of pollutant degree and ecotoxicity of the process was evaluated by ‘green’ metrics by the P (pollutants, persistent and bioaccumulative) and E (ecotoxicity) parameters. Both of these variables were recorded as zero using our method. This study represents a step ahead towards the production of ultrafiltration polymeric membranes by a‘greener’ process than current methods.

Item Type:Article
Additional Information:Thanks to Taylor and Francis editor. The definitive version is available at http://www.tandfonline.com The original PDF of the article can be found at: http://www.tandfonline.com/doi/abs/10.1080/19397038.2010.497230
HAL Id:hal-01286567
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:11 Mar 2016 08:57

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