Regenerative Energie
Organic wastes in all their different shapes and compositions have gained significant commercial, political and academic interest during the last decade. The main driver for this development is the widely accepted consideration of organic wastes as valuable resources rather than problematic or worthless stuff. With the aim to turn the economy from its fossil basis into a bio-economy with presumably higher resource efficiency and less negative or even positive climate impact, governments in many countries have startedto support the use of waste biomass in many ways including subsidies.
However, the increased use of organic wastes has also revealed various kinds of newproblems including technical immaturity, long-term dependence on governmental support, changing regulations in terms of environmental requirements and end-of-waste criteria, and many more. Two major issues that surfaced in recent years are the Formation of new and often problematic wastes (including GHG emissions) while upgrading the original waste and, because organic wastes have been used for ages in agricultureas organic fertilizer, the reduction of soil quality. The more organic matter is used energeticallyor for material purposes, the less is available to nourish our soils and crops with mineral nutrients (especially N and P) and with organic carbon. In this light, the BMBF funded project APECS (Anaerobic pathways to renewable energies and carbon sinks) suggests a new approach to improve the resource efficiency of waste use and to address agricultural and environmental needs at the same time. The underlying concept of the APECS biomass model is a strong integration of bio and thermochemical conversion, soil amendment and carbon sequestration. In detail, acombined production of biomethane by anaerobic digestion and biochar by thermochemicaltreatment of digestate was investigated including the cross-use of internal waste streams.
Further Author:
Benjamin Wirth
| Copyright: | © Wasteconsult International |
| Quelle: | Waste-to-Resources 2015 (Mai 2015) |
| Seiten: | 2 |
| Preis: | € 0,00 |
| Autor: | Dr. Jan Mumme |
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