Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7074058 | Bioresource Technology | 2015 | 5 Pages |
Abstract
Energy supply is a global hot topic. The social and political pressure forces a higher percentage of energy supplied by renewable resources. The production of renewable energy in form of biomethane can be increased by co-substrates such as municipal biowaste. However, a demand-driven energy production or its storage needs optimisation, the option to store the substrate with its inherent energy is investigated in this study. The calorific content of biowaste was found unchanged after 45 d of storage (19.9 ± 0.19 kJ gâ1 total solids), and the methane yield obtained from stored biowaste was comparable to fresh biowaste or even higher (approx. 400 m3 Mgâ1 volatile solids). Our results show that the storage supports the hydrolysis of the co-substrate via acidification and production of volatile fatty acids. The data indicate that storage of biowaste is an efficient way to produce bioenergy on demand. This could in strengthen the role of biomethane plants for electricity supply the future.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Peter Aichinger, Martin Kuprian, Maraike Probst, Heribert Insam, Christian Ebner,