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Study of membrane cleaning with and without ultrasounds application after fouling with three model dairy solutions

Paper ID Volume ID Publish Year Pages File Format Full-Text
18809 43033 2016 11 PDF Available
Title
Study of membrane cleaning with and without ultrasounds application after fouling with three model dairy solutions
Abstract

•Chemical cleaning with P3 Ultrasil 115 at various operating conditions were tested.•Cleaning efficiency was calculated for each membrane and dairy model solution.•The effect of US on the cleaning efficiency of UF membranes was studied.•US application to P3 Ultrasil 115 cleaning solution enhanced membrane cleaning.•Renylat 45 was the solution that caused more fouling for both membranes tested.

The aim of this study was to investigate the behavior of two ultrafiltration (UF) membranes after their fouling with different fouling solutions and cleaning with a surfactant, including the application of ultrasounds (US). Thus, two UF membranes (UH030 and UP005) were fouled with three different whey model solutions that consisted of bovine serum albumin (BSA) with a concentration of 1% (w/w), BSA (1%, w/w) plus CaCl2 with a concentration of 0.17% (w/w) and whey solution (Renylat 45) with a concentration of 2.22% (w/w). Chemical cleaning was carried out with P3 Ultrasil 115 solution at temperatures between 25 °C and 45 °C and concentrations in the range between 0.5% (v/v) and 0.9% (v/v). US were applied in some of the tests at a frequency of 20 kHz and nominal power of 300 W. The results demonstrated that US cleaning was effective to enhance the permeability recovery, although this enhancement was only up to 9%. Concerning fouling, results from resistances calculations showed that for UH030 membrane prevails the reversible fouling whereas for UP005 membrane predominate irreversible fouling.

Keywords
Ultrasounds; Ultrafiltration; Model dairy solutions; Fouling; Membrane cleaning; Surfactant
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Study of membrane cleaning with and without ultrasounds application after fouling with three model dairy solutions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 100, Part A, October 2016, Pages 36–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us