News
Preparatory Trip for the Local Production of APELI Stoves and Fuels
After the two local project coordinators of the HeRoTogo project began their work in Lomé and Kpalimé in December 2024, Dr. Dennis Krüger and Wiebke Anna Wedekind traveled again to Togo from February 28 to March 9, 2025. This time, the focus was particularly on visiting potential local production sites for the APELI stove developed at DBFZ, as well as on locally available fuels made from residual materials or fast-growing biomass required for its operation. At both locations, sample productions of individual stove components were also reviewed. These components had been produced on a trial basis by specialized manufacturers in a comparative competition. In Kpalimé, a visit took place with Mr. Yawo DOGBATSE, the mayor of the city and chairman of the Covenant of Mayors in Sub-Saharan Africa, to inform him about the objectives and activities of the HeRoTogo project and the developments in Kpalimé. Finally, the APELI stoves that have been in operation at the field test site since 2022 were serviced, and discussions were held with the users about their current experiences and suggestions for use and potential further adaptations.
Participation at World Sustainable Energy Days

The World Sustainable Energy Days took place from March 4–7, 2025, in Wels, Austria, featuring a diverse range of research topics, including the EU Pellet Conference, Energy Efficiency Conference, Young Energy Researchers, Energy Efficiency Policy, Industrial Energy Transition, and Smart E-Mobility. Our team member, Kassé Jean Hugues Angbé, had the privilege of presenting his work, titled "Strategy Development for Hydrogen-Conversion Businesses in Côte d'Ivoire" on 4 March 2025 at the Young Biomass Researchers Conference. This event provided him with valuable opportunities to expand his network and connect with fellow young researchers working on related topics.
DBFZ presents APELI cooker at the BMBF
Deforestation in African regions and many other parts of the world is increasing rapidly. The reasons for this are growing population numbers and the increased use of wood/charcoal as cooking fuel. Against this background, a cooker for special requirements was developed in Togo as part of the "LabTogo" project funded by the Federal Ministry of Education and Research (BMBF). The newly developed stove by DBFZ not only requires significantly less fuel than traditional cookers, but also has lower emissions during operation. Our colleague Dr. Dennis Krüger was able to present the new cooker to the Federal Government's hydrogen representative, Mr. Till Mansmann, at the BMBF. Further information: www.dbfz.de/labtogo
Participation in the Annual Meeting of DBFZ
The annual meeting of DBFZ took place on 11-12 September 2024 with the main theme of “Multi-talented biomass: basic raw material, carbon source and energy option”. Working Group of Biogenic Char Applications participated at the event for the first time officially as a “Team” with two contributions. Dr. Dennis Krüger and Dr. Özge Mutlu presented their collaborated poster with Dr. Mirjam Müller titled as “Technical implementation of biochar production according to the TLUD principle” within the framework of ETH-Soil project. Moreover, Dr. Andreas Schedl gave an oral presentation on the topic of “Material and energetic use - biogenic coal” in the session of “Biomass Cycles” with was moderated by Dr. Volker Lenz.
Moderation of the “Meet the Industry” Session at ICONIC 2024
ICONIC (International Conference of Integrated Intellectual Community) launched by PPI Jerman (Vereinigung Indonesischer Studenten in Deutschland e.V) in 2014 and serves as a bridge between Indonesia and the global community, particularly Germany, addressing issues pertaining to sustainable development. This year, ICONIC celebrated its 10th anniversary and 5th occurrence, focusing on the subject “Transformation for Low-Carbon Development”. Rafiandy Dwi Putra is privileged to moderate the session “Meet the Industry: Presentation of the Companies” on 6 September 2024. In this session, six innovative companies from Indonesia and Germany presented their efforts and achievements in supporting low-carbon development.
BioFe Project Kick-off Meeting
The iron & steel industry is on the verge of a major shift from coal to green hydrogen processes. However, the transition from blast furnaces to hydrogen-based direct reduction is significantly hindered by the scarcity of green hydrogen and the lack of suitable infrastructure. As a result, natural gas-based direct reduction is seen as a bridging technology. Additionally, sponge iron lacks carbon, which negatively impacts the operation of the electric arc furnace by increasing the melting temperature, requiring the addition of carbon, and causing greater iron loss in the slag. Biomass can be used in various ways for direct reduction and offers solutions to the aforementioned challenges: as a heat source, a reducing gas, or even in solid form for pellet production. In our “BioFe - Biomass use in iron production under economic and CO2-reducing conditions” project which officially started in June 2024, we aim to determine the availability of sustainable biomass for the steel industry, how it can be optimally integrated into direct reduction in iron production, and to assess the potential economic and environmental impacts. It is funded by Sächsische Aufbaubank – Förderbank (SAB)/EFRE. The kick-off meeting with our project partner DLR-DI took place in Cottbus on 27.08.2024. The project leader Andreas Schedl and researcher Rafiandy Dwi Putra had chance to exchange with the partners on the further steps of the project. For further information about the project, please contact with Dr. Andreas Schedl (Contact)
HeRoTogo Project Kick-off Meeting in Togo
HeRoTogo - Development of a roadmap for sustainable heat generation with biomass in Togo and demonstration of selected technologies along the entire utilization path” project is officially started in March 2024. The project is funded by Federal Ministry of Education and Research (BMBF) and is the follow-up project of LabTogo project (also funded by BMBF) by building on its successful results. HeRoTogo project aims the creation of a road map for sustainable biomass-based heat supply in Togo for private and commercial actors. On this regard, internal kick-off meeting took place on 10.04.2024 and following that project leader Dennis Krüger visited Lomé-Togo together with Wiebke Wedekind between 25 May-1 June 2024. During their stay, they had chance to exchange with our Togolese partners and discuss about the further steps of the project. They also visited two important project locations; Dévémé and Kpalimé. For further information about the project, please contact with Dr. Dennis Krüger (Contact)
Top Downloaded Article in CE&T

Our article entitled "Competitive Options for Bio-Syngas in High-Temperature Heat Demand Sectors: Projections until 2050", published in Chemical Engineering and Technology (Wiley), is considered one of the most downloaded articles among the papers published in an issue between 01.01-31.12.2022. This study investigated competitive options for bio-syngas as a replacement for natural gas in Germany's energy-intensive sectors with high heat demand and projected them until 2050 using selected technologies. It was funded by the Federal Ministry for Economic Affairs and Climate Protection (BMWi) as part of the "KonditorGas" project (03EI5417A). Further information about the article can be found here