Dilute phase pneumatic conveying of whey protein isolate powders: Particle breakage and its effects on bulk properties

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dc.contributor.authorZhang, Fuweng
dc.contributor.authorOlaleye, Akeem K.
dc.contributor.authorO'Mahony, James A.
dc.contributor.authorMiao, Song
dc.contributor.authorCronin, Kevin
dc.contributor.funderEnterprise Irelanden
dc.date.accessioned2020-08-04T09:21:32Z
dc.date.available2020-08-04T09:21:32Z
dc.date.issued2020-07-01
dc.date.updated2020-08-04T09:12:38Z
dc.description.abstractBreakage of dairy powder during pneumatic conveying negatively affects the end-customer properties (scoop uniformity and reconstitution). A dilute phase pneumatic conveying system was built to conduct studies into this problem using whey protein isolate powder (WPI) as the test material. Effects of conveying air velocity (V), solid loading rate (SL), pipe bend radius (D), and initial particle size (d) on the level of attrition were experimentally studied. Four quality characteristics were measured before and after conveying: particle size distribution, tapped bulk density, flowability, and wettability. The damaged WPI agglomerates after conveying give rise to many porous holes exposed to the interstitial air. V is the most important input variable and breakage levels rise rapidly at higher airspeeds. The mean volume diameter D[4,3] decreased by around 20% using the largest airspeed of 30 m/s. Powder breakage is also very sensitive to particle size. There appears to be a threshold size below which breakage is almost negligible. By contrast, SL and D show lesser influence on powder breakage. Reflecting the changes in particle size due to breakage, tapped bulk density increases whereas wettability decreases as a result of an increase in conveying air velocity. However, breakage does not show a significant effect on powder flowability as powder damage not only decreases particle size but also changes the particle's surface morphology.en
dc.description.sponsorshipEnterprise Ireland (Grant Number TC/2014/0016)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZhang, F., Olaleye, A. K., O'Mahony, J. A., Miao, S. and Cronin, K. (2020) 'Dilute phase pneumatic conveying of whey protein isolate powders: Particle breakage and its effects on bulk properties', Advanced Powder Technology. doi: 10.1016/j.apt.2020.06.019en
dc.identifier.doi10.1016/j.apt.2020.06.019en
dc.identifier.eissn1568-5527
dc.identifier.issn0921-8831
dc.identifier.journaltitleAdvanced Powder Technologyen
dc.identifier.urihttps://hdl.handle.net/10468/10350
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.rights© 2020, Elsevier B.V. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectFlowabilityen
dc.subjectPneumatic conveyingen
dc.subjectPowder breakageen
dc.subjectWettabilityen
dc.subjectWhey protein isolateen
dc.titleDilute phase pneumatic conveying of whey protein isolate powders: Particle breakage and its effects on bulk propertiesen
dc.typeArticle (peer-reviewed)en
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