Community Research and Development Information Service - CORDIS

FP5

BIO FLAM Report Summary

Project ID: ENK5-CT-1999-00004
Funded under: FP5-EESD
Country: Netherlands

CCSEM for mineral size distribution of coal-biomass mixtures

A Computer Controlled Scanning Electron Microscopy (CCSEM) procedure has been developed to determine the mineral speciation of coal-biomass mixtures, as a basis for ash formation and ash deposition predictions. For coal, such procedures are existent and well known. CCSEM for coals is used to determine the Mineral Size Distribution (MSD), the output of such an analysis being the normalised mass distribution of some 25 mineral types, divided over particle size bins of, e.g., 2-4, 4-8, 8-16, 16-32, 32-64 and 64-128µm.

Many biomass materials also contain, specific, typically calcium or silicon-based “bio”-minerals. Agricultural (harvested) or waste biomass materials are often contaminated with sand and clay particles. Since the biominerals and the external contamination may both significantly contribute to the total inorganic matter, a new CCSEM procedure was developed to accommodate the analysis of biomass materials.

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