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Toward a functional integration of anaerobic digestion and pyrolysis for a sustainable resource management. Comparison between solid-digestate and its derived pyrochar as soil amendment

F. Monlau, M. Francavilla, C. Sambusiti, N. Antoniou, A. Solhy, A. Libutti, A. Zabaniotou, A. Barakat and M. Monteleone

Applied Energy, 2016, vol. 169, issue C, 652-662

Abstract: The integration of different technologies acts as a leverage in boosting “circular economy” and improving resource use efficiency. In this respect, the coupling of anaerobic digestion with pyrolysis was the focus of this work. Solid-digestate obtained from anaerobic digestion was addressed to supply pyrolysis thus increasing the net energy gains and obtaining “biochar” (called “pyrochar” in our case) to be used as soil amendment alternatively to solid-digestate. The current interest on biochar is linked to its long-term soil carbon sequestration, thus contributing to global warming mitigation.

Keywords: Anaerobic digestion; Digestate; Pyrolysis; Biochar; Soil quality; Carbon sequestration (search for similar items in EconPapers)
Date: 2016
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Handle: RePEc:eee:appene:v:169:y:2016:i:c:p:652-662