Analysis of Drying of Brewers’ Spent Grain

José Ignacio Arranz; María Teresa Miranda; Francisco José Sepúlveda; Irene Montero; Carmen Victoria Rojas

doi:10.3390/proceedings2231467

Proceedings (Nov 2018)

Analysis of Drying of Brewers’ Spent Grain

José Ignacio Arranz,
María Teresa Miranda,
Francisco José Sepúlveda,
Irene Montero,
Carmen Victoria Rojas

Affiliations

José Ignacio Arranz: Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain
María Teresa Miranda: Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain
Francisco José Sepúlveda: Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain
Irene Montero: Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain
Carmen Victoria Rojas: Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain

DOI: https://doi.org/10.3390/proceedings2231467
Journal volume & issue: Vol. 2, no. 23
p. 1467

Abstract

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Brewing industry generates a main residue, brewers’ spent grain (BSG), which has good properties both for use in animal consumption and for thermal use, but contains a very high content of moisture (20–25% dry matter content), so that its elimination or treatment should be immediate, since it can cause degeneration problems of the product. Currently, brewers often supply this material at low cost for use as livestock feed. This solution is not efficiently carried out without reporting too much benefit to the brewers more than to eliminate waste from their facilities. However, BSG is a raw material of interest for application in different areas due to its low price, availability throughout the year and a valuable chemical composition, so it seems necessary to look for an alternative use to give value to these characteristics. In this paper a drying study is carried out in order to establish the foundations for its energy use by thermal of BSG. BSG has been used from a craft brewery located at Badajoz, Spain. Drying analysis was carried out for various temperatures and inlet air flow by means a convective dryer. The properties studied show that BSG can be used for thermal utilization in large installations, being necessary heat drying processes as a pretreatment in order to obtain a biofuel with acceptable efficiency.

Published in Proceedings

ISSN: 2504-3900 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: General Works
Website: http://www.mdpi.com/journal/proceedings

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