Title:
Direct Biological Methanation of the Synthesis Gas of an Allothermal Wood Gasifier
Author(s):
Trabold, T., Dillig, M., Neubert, M., Karl, J.
Document(s):
Paper
Abstract:
Methanogenic archaea are able to substitute natural gas, i.e. CH4, by metabolization of H2 and CO2 or CO, respectively. The presented paper is based on the project Ash-to-Gas, which aims at using biomass-derived syngas from thermochemical gasification as the main feedstock instead of the common feed biogas and hydrogen produced by the electrolysis This leads to a broader applicability of biological methanation. Main research questions under evaluation are the archaeas’ ability of converting CO and tars as major output and byproducts of the gasification. Furthermore, the investigation focuses on the applicability of char and ash as a nutrient for the microorganisms. This conference contribution presents the experimental results obtained in a continuously stirred tank methanation reactor (CSTR) at the Chair of Energy Process Engineering at Friedrich-Alexander-University Erlangen-Nürnberg (FAU). The effects of various components and impurities of the syngas like CO, tars (e.g. toluene, naphthalene and acenaphtene) and ashes on the microorganisms and their productiveness are discussed.
Keywords:
tar, allothermal gasification, archaea, biological methanation
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas production and biogas upgrading
Event:
26th European Biomass Conference and Exhibition
Session:
2DO.7.1
Pages:
592 - 595
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2DO.7.1
Price:
FREE
