Mineral concentrations in solid fuels from European semi-natural grasslands after hydrothermal conditioning and subsequent mechanical dehydration

F. Hensgen, L. Buehle, I. S. Donnison, M. D. Fraser, J. Vale, J. Corton, K. Heinsoo, I. Melts, M. Wachendorf

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Abstract

The integrated generation of solid fuel and biogas from biomass (IFBB) is particularly designed for the conversion of semi-natural and high biodiversity grassland biomass into energy. This biomass is problematic in common energy conversion techniques, e.g. biogas conversion or combustion, because of its chemical composition. The IFFB process separates the material into a fibre rich solid fuel and a fluid, which is rich in minerals and highly digestible constituents and is used for anaerobic digestion. Biomasses from 18 European semi-natural grassland sites have been processed in an IFBB prototype. The impact of different chemical and botanical parameters on mass flow of mineral plant compounds and their concentrations in the fuel has been investigated. Fuel quality was significantly influenced by chemical and botanical parameters and the quality could be significantly improved during processing. Biomass with a high grass proportion and fibre content showed the best fuel qualities after IFBB treatment.
Original languageEnglish
Pages (from-to)332-342
Number of pages11
JournalBioresource Technology
Volume118
Early online date18 May 2012
DOIs
Publication statusPublished - 01 Aug 2012

Keywords

  • Bioenergy
  • Grassland
  • IFBB
  • Solid fuel

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