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Authors
Advisor(s)
Abstract(s)
The aim of this work was to study the viability of
recycling the residual yeast and diatomaceous earth (RYDE) slurry
generated by the beer brewing industry by composting with animal
manures, as well as to evaluate the quality of the composts obtained.
Two pilot composting trials were carried out with different mixes:
cow manure/RYDE slurry (Pile CM) and sheep manure/RYDE slurry
(Pile SM). For all piles, wood chips were applied as bulking agent.
The process was monitored by evaluating standard physical and
chemical parameters. The compost quality was assessed by the heavy
metals content and phytotoxicity. Both piles reached a thermophilic
phase in the first day, however having different trends. The pH
showed a slight alkaline character. The C/N reached values lower
than 19 at the end of composting process. Generally, all the piles
exhibited absence of heavy metals. However, the pile SM exhibited
phytotoxicity. This study showed that RYDE slurry can be valorized
by composting with cow manure
Description
Keywords
Beer brewing wastes Compost Quality Valorization
Citation
Silva, M. E., & Brás, I. (2017). Valorization of Beer Brewing Wastes by Composting. Engineering and Technology, International Journal of Biological, Biomolecular, Agricultural, Food and Biotechnological Engineering, 11(3), 220–223.
Publisher
World Academy of Science, Engineering and Technology