Lignite is an abundant carbon material with a variable surface structure and low cation density The introduction of metal (hydr)oxide phases has improved the anionic binding potential lignite. In this study, activated lignite (A−L), Ca2+−modified (Ca−L), (Ca−A−L) were synthesized to remove aqueous phosphate. was first (KOH: lignite, mass ratio, 3:1) at 750 ºC prepare A−L, improving its area by ...

The hot strength of coke prepared from an acid-washed lignite by briquetting-carbonization before and after CO2 gasification was, for the first time, investigated in this work. at 1000°C was higher than measured a room temperature. resulted linear decrease with reaction time. lignite-coke showed faster during gasification, compared to conventional cokes derived caking coal or non-or slightly co...

The management of plastic waste is considered to be among the major environmental problems that must urgently addressed. For various reasons, recycling not always feasible. In this study, a comprehensive evaluation mixture wastes (of municipal solid wastes, MSW) as potential fuel performed. Precisely, combustion and co-combustion waste-lignite blends are studied. Thermochemical characteristics,...

Four different types of coal have been pyrolyzed in a laminar flow, drop tube furnace in order to establish a relationship between polycyclic aromatic compound (PAC) evolution and mutagenicity. Temperatures of 900K to 1700K and particle residence times up to 0.3 sec were chosen to best simulate conditions of rapid rate pyrolysis in pulverized (44-53 microns) coal combustion. The specific mutage...

The positive effect of humic acids on the growth of plant roots is well known, however, the mechanisms and role of their physical structure in these processes have not been fully explained yet. In this work, South-Moravian lignite was oxidized by means of nitric acid and hydrogen peroxide to produce a set of regenerated humic acids. The elemental composition, solid state stability and solution ...

After the 2011 Fukushima nuclear accident, Chancellor Merkel of Germany announced a complete nuclear phase-out in Germany by 2022, while President Hollande of France assured the French government of his commitment to nuclear energy. Fossil fuels, notably lignite and coal, dominated the German energy sector with 47.9% market share of total energy production in Germany; nuclear energy is the lead...

Under the pressure of competition, primarily caused by high price carbon dioxide emission allowances, lignite production in Western Macedonia Lignite Centre dramatically reduced last decade. This development affects ambient air quality greater mine area, as evidenced reducing particulate matter concentrations and number exceedances daily average per year. Moreover, differences measurements moni...