Project meeting of STEP at the site of the company ATS - Agro Trading & Solutions in Hardegsen (Photo: DBFZ)

Biomass gasification Biomethane strategy Biofuels

Project ID 03KB011

BtG - R&D Platform – Energetic utilisation of residual biomass with Absorption Enhanced Reforming (AER) Technology

Fuel spruce (Photo: IFK)


  • 01.04.2009 – 31.12.2012


Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW)
Industriestr. 6
70565 Stuttgart

Dr. Michael Specht – project leader
Telephone: +49 (0) 711 7870-218  

Stefan Steiert  – project coordinator
Telephone: +49 (0) 711 7870-257


03KB011B - DVGW test laboratory at the Engler-Bunte-Institute of the Karlsruhe Institute of Technology (KIT)
03KB011C - Universität Stuttgart
  • Address:
  • Universität Stuttgart
    Institute of Combustion and Power Plant Technology (IFK)
    Pfaffenwaldring 23
    70569 Stuttgart
  • Contact:
  • Prof. Dr. Günter Scheffknecht – project leader
    Telephone: +49 (0) 711 6856-8913

    Norman Poboß – further project member

    Mariusz Zieba – further project member

Associated partners

Cooperation partners



Results only available in German.


The R&D-Platform „BtG“ pursuits the scientific monitoring and optimisation of the AER gasification technology and focuses on innovative methods to use the high-quality product gas in a poly-generation concept.


In the frame of this project, innovative methods to generate power, heat and / or SNG (H2) from low rank biomass resources are developed, proven and demonstrated. Hence, project work shall support product realisation and, respectively, commercial launch of an AER demonstration plant. Goals are the prove of feasibility of innovative conversion technologies in order to initiate future demonstration projects. A further overall objective is the installation of a network consisting of research institutes, universities and companies. Further R&D projects dealing with thermo-chemical biomass-to-gas technologies will be acquired and a close cooperation with the operator of the AER gasification plant concerning public relations, marketing and market positioning is envisaged.



The scientific task of ZSW and its partners is to investigate the applicability of mineral-rich biomass resources for AER gasification. Another research topic is the conditioning of AER product gas for SNG production and renewable hydrogen. Further the conception of AER pressure mode will be investigated because pressurised gasification enables higher reaction rates and allows smaller reactors with higher biomass input.


The Institute of Combustion and Power Plant Technology (IFK) predominantly investigates the applicability of mineral-rich biomass resources (e.g. agricultural waste materials, etc.) from the “biosphere reserve Schwäbische Alb” for AER gasification to enlarge the spectrum of usable types of biomass and to exploit potential biomass sources that are not in competition with food production or heat generation. Gasification trials are operated under AER conditions at the coupled fluidized bed gasification pilot plant of the IFK with selected wood substitute fuels and wood substitute mixtures from the biosphere reserve.


  • Evaluation of different methods and pre-selection of the reactor and catalyst system concepts for cleaning the gasification raw gas up to syn gas quality.
  • Construction of a laboratory apparatus to prove the feasibility of a hot gas cleaning concept for SNG production from AER gasification gases experimentally.
  • Screening of catalysts and adsorbents with model gases and evaluation with real gasification raw gases at IFK.



  • Biomass gasification 
  • Fuel Flexibilisation
  • Hot gas cleaning for SNG production
  • Renewable hydrogen
  • Conception of AER pressure mode


  • Gasification of biomass in fluidized bed reactors, characterizing product gas and flue gas in consideration of contaminant components
  • Influence of  fuel quality on product gas composition and product gas quality in the sorption enhanced steam gasification
  • Optimization of reactor concept and operating conditions


  • Conception of selected hot gas cleaning stages for SNG production from AER gasification gases
  • Construction and implementing of a mobile laboratory apparatus



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