Production, Characterization and Utilization of Hydrochar as Bio-Fertilizer
Schleicher, S., Bischoff, W-A., Pfenning, J., Tjiok, D., von Stackelberg, B., Benkowitsch, E., Müller, T.
Hydrochar, a product derived from biomass converted by hydrothermal carbonisation (HTC), can be used as charcoal for thermal combustion or as a bio-fertilizer. Due to its chemical and structural composition it is more suitable as a bio-fertilizer than as charcoal for thermal combustion. We produced and investigated Hydrochars from different waste streams (biowaste, biodigestate and sewage sludge). The Hydrochars were chemically characterized and also the effect on plant growth was studied. The aim of this study was to produce a purpose designed Hydrochar for soil amendment (fertilizer and soil conditioner). All tested hydrochars have high potential as bio-fertilizer.Hydrochars from biodigestate increased marketable yields and complied with EU ecolabel requirements as organic fertilizers. Hydrochars from sewage sludge were negative for plant growth, had low K content and contained high levels of heavy metals.Hydrochars from biowaste were negative for plant growth and had low K content. For these, further optimizationswill be tested..
biochar, bio fertilizer, hydrochar, soil melioration, plant test, ecolabel, hydrothermal carbonization (HTC)
24th European Biomass Conference and Exhibition
1746 - 1747
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