1 VUT v Brně Fakulta chemická Ústav fyzikální a spotřební chemie Miroslav KALOČ 2 2 VŠB-TU Ostrava Fakulta metalurgie a materiálového inženýrství Katedra chemie Martina KLUČÁKOVÁ 1 Miloslav PEKAŘ 1
thermal power plant in Hodonín last mine working Mikulčice near Hodonín combustion heat: kJ/kg heating value: ~ kJ/kg LIGNITE AT PRESENT ( Czech Republic) low quality fuel
coal + biomass surface activity high content of humic substances valuable chemical raw material ESSENCE: LIGNITE IN THE FUTURE?
direct use OR chemical or physical treatment for instance: sorbent plant production supporting agent source of humic substances LIGNITE IN THE FUTURE?
in natural state lignite - SORBENT Maximum adsorbed amounts in mol/g Al 3+ Cd 2+ Cr 3+ Cu 2+ Fe 2+ Pb 2+ Zn 2+ lignite coal Merck 3.57 ––
Sample 650/1 650/2 750/1 750/2 RBK after carbonization lignite - SORBENT Toluene breakthrough times for various sorbents Relative breakthrough time in %
relative % yield Fertilizer * Carrots Maize Vetch NPK lignite lignite lignite * Lignite fertilizer dosage grows with growing number lignite & AGRICULTURE Relative yields from pot tests
field tests - wheat lignite & AGRICULTURE
natural state: 20-30% after oxidation in suspension: up to ~ 60% sorption and complexation kinetics and equilibria transport and chemical processes in humic gels fractionation and characterization of humic acids thermooxidative stability preparation of organic-mineral complexes lignite & HUMIC ACIDS
BURN LIGNITE OR CLOSE MINES OR MAKE EFFICIENT AND INTELLIGENT USE OF ONE OF OUR FEW RAW MATERIALS WHAT TO DO...? CONCLUSION