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Amino acid retention with alumina γ nanofiltration membrane

✍ Scribed by H Grib; M Persin; C Gavach; D.L Piron; J Sandeaux; N Mameri

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
202 KB
Volume
172
Category
Article
ISSN
0376-7388

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✦ Synopsis

The amino acid retention with an alumina ␥ nanofiltration membrane was investigated. Research was conducted on the effect of various experimental parameters such as transmembrane pressure, salt concentration and pH on the experimental retention coefficient (R o ) of mineral nanofiltration membrane. Four different amino acids (2 neutral, 1 acidic and 1 basic) were used as solutes in NaCl (0.1 M). The behaviour of each was determined alone and in a mixture of the four amino acids. Comparison of the experimental retention coefficient and the size retention coefficient indicates that charge effects facilitate rejection of the amino acids by alumina membrane. It was demonstrated that nanofiltration of amino acids is strongly influenced by solute environment and by hydrodynamic parameters.

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