| abstract |
Bone charcoal for the purification of gases or liquids from undesirable by-products, harmful substances and toxins, which is produced by industrial pyrolysis of coarsely crushed, degreased, deboninated bones, bone components and cartilage in the form of slaughterhouse waste, characterized that these as crushing granules or granules a uniform grain structure with a diameter between 0.05-15 mm, and a high specific surface area of at least 500-1200 m 2 · g -1 and a high cation exchange capacity> 50 meq / 100 g or SI Unit> 5 cmol / kg possesses and a doping reagent of metal salts and / or metal oxides of metals (Ca, Cr, K, Mg, W, Se, B, Na, Hg, Mo, As, Sb, Sn, Pb, Bi, Tl, Cd, Cu, Ag, Co, Ni, Mn, Zn and / or Fe), which is caused by a pyrolysis at temperatures of around 820 ° C and higher while avoiding the taking place at temperatures above 1000 ° C calcination in the production. |