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Effect of Substrate Characteristics and Process Fluid Percolation on Dry Anaerobic Digestion Processes
Author(s) -
Wedwitschka Harald,
Gallegos Daniela,
Tietze Michael,
Reinhold Jürgen,
Jenson Earl,
Liebetrau Jan,
Nelles Michael
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900404
Subject(s) - anaerobic digestion , compaction , methane , materials science , percolation (cognitive psychology) , permeability (electromagnetism) , pulp and paper industry , chemistry , waste management , chemical engineering , composite material , organic chemistry , engineering , biochemistry , neuroscience , membrane , biology
The dry anaerobic batch digestion process is an organic waste treatment technology most appropriate for the treatment of stackable (non‐free‐flowing) dry organic waste materials. The effect of the process fluid percolation and substrate permeability on methane production of organic household waste was investigated in anaerobic dry digestion trials at pilot scale. The container system consisted of two percolation digesters and a fixed‐bed methane digester. The experimental results indicate that material compaction occurs during the digestion process and can have a negative effect on substrate permeability. Structure material addition reduced material compaction and as a result increased the substrate permeability.