Enzymatic cleaning of ultrafiltration membranes fouled by abattoir effluent

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dc.contributor.authorAllie Z.
dc.contributor.authorJacobs E.P.
dc.contributor.authorMaartens A.
dc.contributor.authorSwart P.
dc.date.accessioned2011-05-15T15:59:41Z
dc.date.available2011-05-15T15:59:41Z
dc.date.issued2003
dc.description.abstractProteins and lipids are the major membrane foulants present in abattoir process effluent. The successful use of ultrafiltration (UF) to treat such effluent streams depends on the effective removal of these foulants, which are mostly hydrophobic fouling species, from the membrane surface. Lipases and proteases were used in this study to clean flat-sheet polysulphone membranes (PSMs) fouled in abattoir effluent. The lipases from Candida cylindracea, Pseudomonas mendocina and Aspergillus oryzea were used alone, as well as in combination with the proteases from Bacillus licheniformis, Protease A (a protein engineered protease specific for low temperature wash conditions) and Aspergillus oryzea. Enzyme assays were first performed to identify active bacterial proteases and lipases. The parameters used to determine the cleaning efficiencies of the enzymes used were: (i) lipid content adsorbed onto the membranes; (ii) protein content adsorbed onto the membranes; and (iii) pure-water flux (PWF) after enzymatic cleaning. The results show the ability of enzymes to remove adsorptive fouling, and indicate their usefulness in enzyme-based cleaning regimes for membranes operating on abattoir effluents. © 2003 Elsevier Science B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationJournal of Membrane Science
dc.identifier.citation218
dc.identifier.citation02-Jan
dc.identifier.issn3767388
dc.identifier.other10.1016/S0376-7388(03)00145-5
dc.identifier.urihttp://hdl.handle.net/10019.1/11306
dc.subjectBacteria
dc.subjectEffluents
dc.subjectEnzymes
dc.subjectFouling
dc.subjectLipids
dc.subjectPolymeric membranes
dc.subjectAbattoir effluents
dc.subjectUltrafiltration
dc.subjectbacterial enzyme
dc.subjectlipid
dc.subjectpolysulfone
dc.subjectproteinase
dc.subjecttriacylglycerol lipase
dc.subjecteffluent treatment
dc.subjectenzyme
dc.subjectmembrane
dc.subjectseparation
dc.subjectultrafiltration
dc.subjectaccuracy
dc.subjectadsorption kinetics
dc.subjectarticle
dc.subjectAspergillus oryzae
dc.subjectBacillus licheniformis
dc.subjectCandida
dc.subjecteffluent
dc.subjectenzyme activity
dc.subjectenzyme assay
dc.subjectenzyme engineering
dc.subjectenzyme specificity
dc.subjectfouling control
dc.subjecthydrophobicity
dc.subjectlow temperature
dc.subjectmembrane permeability
dc.subjectnonhuman
dc.subjectparameter
dc.subjectpriority journal
dc.subjectPseudomonas
dc.subjectultrafiltration
dc.titleEnzymatic cleaning of ultrafiltration membranes fouled by abattoir effluent
dc.typeArticle
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