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Analysis of Drying of Brewers’ Spent Grain

Department of Mechanical Engineering, Energy and Materials, School of Industrial Engineering, University of Extremadura, Elvas Avenue s/n, 06006 Badajoz, Spain
Author to whom correspondence should be addressed.
Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 July 2018.
Proceedings 2018, 2(23), 1467;
Published: 1 November 2018
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.
Keywords: brewers’ spent grain; drying; biomass brewers’ spent grain; drying; biomass
MDPI and ACS Style

Arranz, J.I.; Miranda, M.T.; Sepúlveda, F.J.; Montero, I.; Rojas, C.V. Analysis of Drying of Brewers’ Spent Grain. Proceedings 2018, 2, 1467.

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