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

Power Biomass gasification Biomass furnace

Project ID 03KB049

HTC - Integrated utilization plant and strategy for community biomass: "HTC" Halle Municipal Water Management and Waste Disposal Company

Municipal waste from the region Halle (Photo: Hallesche Wasser und Stadtwirtschaft GmbH)


  • 01.12.2010 – 31.12.2014


DBFZ Deutsches Biomasseforschungszentrum gemeinnützige GmbH
Torgauer Straße 116
04347 Leipzig

Dr.-Ing. Marco Klemm – project leader
Telephone: +49 (0)341 2434 537

Andreas Clemens – direct contact person
Telephone: +49 (0)341 2434 479

Michael Kröger
Telephone: +49 (0)341 2434 432

Thomas Zeng
Telephone: +49 (0)341 2434 542


03KB049B - Hallesche Wasser und Stadtwirtschaft GmbH

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Results are only available in German.


The project is focused on the hydrothermal carbonisation (HTC) as an innovative conversion process to transform biogenic residual materials into high-quality biogenic solid fuels.


In close cooperation with the German Biomass Research Centre (DBFZ), the Halle Municipal Water Management and Waste Disposal Company (HWS) intends to use this project to design, set up and test an integrated process for the multiple-stage energetic utilization of biodegradable waste and further biomass fractions. This will represent an independent contribution to efficient exploration, development and utilization of biogenic residual materials. As similar problem situations exist in other communities, the created concept should be transferable to them and thus be subject to repeated use. Initially, the product from this process is planned to serve as lignite substitute for combustion in large-scale power plants. Manufacturing energy pellets will also be examined as a higher-quality utilization alternative.



The DBFZ analyses the chemical composition of the organic waste and determines its fuel properties, e.g. the heating value. The organic waste is hydrothermal treated in a laboratory autoclave to identify optimal operation parameters and to evaluate the quality of the HTC biochar. Furthermore pellets form HTC biochar are produced and combusted measuring the emissions. Overall assessments identify the energy and economic efficiency and evaluate the greenhouse gas emission saving.


 The project’s objective is to draw up a concept of innovative, economically advantageous and climate-friendly recycling of biogenic residual materials. Besides the established processes of composting and fermentation, hydrothermal carbonisation (HTC) is looked into as an innovative conversion process to transform biomass produced regionally into high-quality biogenic solid fuels and such materials’ potential of reducing greenhouse gases is evaluated.



  • Characterisation of raw materials
  • Hydrothermal Carbonisation in a laboratory autoclave
  • Scientific support of the plant operation
  • Energetic utilization of the HTC biochar
  • Concept evaluation, Energy and material balances, Quantification of greenhouse gas emission


 Altogether, seven work packages determine the focuses:

  • Characterization of raw materials and laboratory analyses as a basis for the technical and commercial preparation of the investment decision (milestone)
  • Erection and operation of the HTC plant, scientific support of the plant operation and energetic utilization of the HTC bio-coal
  • Concept evaluation, energy and material balances, cost accounting


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