Biochar as Additive in Biogas-Production from Bio-Waste

Daniel Meyer-Kohlstock, Thomas Haupt, Erik Heldt, Nils Heldt and Eckhard Kraft
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Daniel Meyer-Kohlstock: Biotechnology in Resources Management, Bauhaus-Universität Weimar, Coudraystr. 7, Weimar 99423, Germany
Thomas Haupt: Biotechnology in Resources Management, Bauhaus-Universität Weimar, Coudraystr. 7, Weimar 99423, Germany
Erik Heldt: Biotechnology in Resources Management, Bauhaus-Universität Weimar, Coudraystr. 7, Weimar 99423, Germany
Nils Heldt: Biotechnology in Resources Management, Bauhaus-Universität Weimar, Coudraystr. 7, Weimar 99423, Germany
Eckhard Kraft: Biotechnology in Resources Management, Bauhaus-Universität Weimar, Coudraystr. 7, Weimar 99423, Germany

Energies, 2016, vol. 9, issue 4, 1-10

Abstract: Previous publications about biochar in anaerobic digestion show encouraging results with regard to increased biogas yields. This work investigates such effects in a solid-state fermentation of bio-waste. Unlike in previous trials, the influence of biochar is tested with a setup that simulates an industrial-scale biogas plant. Both the biogas and the methane yield increased around 5% with a biochar addition of 5%—based on organic dry matter biochar to bio-waste. An addition of 10% increased the yield by around 3%. While scaling effects prohibit a simple transfer of the results to industrial-scale plants, and although the certainty of the results is reduced by the heterogeneity of the bio-waste, further research in this direction seems promising.

Keywords: biochar; bio-waste; biogas; anaerobic digestion; solid-state fermentation; composting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (21)

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