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Rhamnolipid as new bio-agent for cleaning of ultrafiltration membrane fouled by whey
Department of Chemical Engineering, Babol Noushirvani University of Technology.
Department of Chemical Engineering, Babol Noushirvani University of Technology.
Department of Chemical Engineering, Babol Noushirvani University of Technology.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0003-4887-2433
2018 (English)In: Engineering in Life Sciences, ISSN 1618-0240, E-ISSN 1618-2863, Vol. 18, no 5, p. 272-280Article in journal (Refereed) Published
Sustainable development
In my opinion, the content of this publication falls within the area of sustainable development.
Abstract [en]

In this work, rhamnolipid biosurfactant as an eco-friendly and biodegradable cleaning agent was produced by Pseudomonas aeruginosa bacteria and was used to evaluate the chemical cleaning efficiency of whey fouled ultrafiltration membranes. Thin layer chromatography (TLC) and Fourier transform infrared spectroscopy (FTIR) confirmed the successful synthesis of rhamnolipid. The produced rhamnolipid was compared to chemical cleaners including sodium hydroxide (NaOH), sodium dodecyl sulfate (SDS) and Tween 20. Ultrafiltration membranes used for fouling and cleaning analysis were prepared using phase inversion via immersion precipitation technique. For studying the fouling mechanisms, Hermia's model adapted to cross-flow was used. From the fouling mechanism experiments, it was found that the complete blocking and cake formation were the dominant fouling mechanisms. The highest values of cleaning efficiency were achieved using rhamnolipid and NaOH as cleaning agents with the flux recovery of 100%, but with considering the low concentration of the rhamnolipid used in the cleaning solution compared to NaOH (0.3 versus 4 g/L for NaOH), its application is preferred. 

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 18, no 5, p. 272-280
Keywords [en]
Fouling mechanism, Membrane cleaning, Rhamnolipid biosurfactant, Ultrafiltration, Whey
National Category
Industrial Biotechnology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-14794DOI: 10.1002/elsc.201700070ISI: 000431632000001Scopus ID: 2-s2.0-85041586780OAI: oai:DiVA.org:hb-14794DiVA, id: diva2:1236121
Available from: 2018-07-31 Created: 2018-07-31 Last updated: 2018-08-08Bibliographically approved

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Taherzadeh, Mohammad J

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