6533b824fe1ef96bd12812de

RESEARCH PRODUCT

Utilization of enzymatic detergents to clean inorganic membranes fouled by whey proteins

S. ÁLvarezFrancisco A. RieraRicardo AlvarezM. Arguello

subject

chemistry.chemical_classificationHydrolysisWhey proteinMembraneChromatographyEnzymeFoulingChemistryBatch reactorFiltration and SeparationFractionationPermeationAnalytical Chemistry

description

In this work inorganic membranes used for whey protein fractionation were cleaned with enzymatic detergents. The inorganic membrane Carbosep ® M1 (Orelis S.A., France), of 150 kg/mol molecular weight cut-off and ZrO2 filtering layer, was used and the commercial detergent P3-Ultrasil ® 62 (Henkel IbS.A., Spain) was selected for the cleaning. Hydraulic and chemical methods were considered to characterize the membrane cleanliness. Cleaning efficiency was observed to be a function of the operating conditions: recycling versus non-recycling of permeate, cleaning solution pH, enzymatic agent concentration and cleaning time. The optimum conditions to perform the cleaning were related to the optimum conditions to hydrolyze whey proteins in a batch reactor. Very high cleaning efficiencies (∼100%) were reached in short operating times (20 min). However, residual matter was detected on the membrane surface after the cleaning. © 2004 Elsevier B.V. All rights reserved.

yearjournalcountryeditionlanguage
2005-02-01Separation and Purification Technology
https://doi.org/10.1016/j.seppur.2004.05.005