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Type: Artigo de evento
Title: Combined Microwave And Rotating Pulsed Fluidized Bed Drying Of Poly-hydroxybutyrate
Author: Da Rosa G.S.
Junior A.M.
Dos Santos Rocha S.C.
Abstract: Poly-hydroxybutirate (PHB) is a biodegradable thermoplastic polyester that can be considered analogous to many conventional petroleum-derived plastics currently in use. In Brazil, PHB is produced by bacterial fermentation of the sugarcane in a process integrated to the sugar and ethanol industrial chain. Drying is an important step of PHB production because an adequate post-processing can be achieved only at moisture contents lower than 0.50 % (w.b.). This work aimed at investigating the influence of microwave power level and hot air conditions on drying of PHB in a combined microwave and rotating pulsed fluidized bed (RPFB) dryer. The effects of operational parameters were analyzed by a 2-level factorial design with 3 repetitions at the center point. The results showed final moisture content in the range of 0.38-0.95 % (w.b.). Temperature of the air and microwave power level had a significant influence on the drying process. The dryer proved to be appropriate to dry the PHB granules, resulting in a lower process time compared to convective drying in RPFB.
Editor: Editions Cepadues
Rights: fechado
Identifier DOI: 
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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