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The feasibility to obtain effective cheap adsorbents using rotary kiln technology is studied for three lignites with different composition. The paper analyzes three different aspects, (i) relation between lignite origin and adsorption capacities of 4 nitrophenol, (ii) effect of the mineral matter content (amount and nature of ashes), (iii) pore volume distribution and surface area development. The...
In this article, cheap adsorbents were produced starting from two different lignites. About 500 kg of each coal was pyrolyzed in a rotary kiln at semi-pilot scale. Characterization of the obtained chars are made in terms of porosity development, surface functional groups and adsorptive properties determined for both 4-nitrophenol and lead. A post-oxidative treatment at low temperature is proposed...
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