MIXTURE OF TAILINGS FOR APPLICATION IN LIGHT SOIL

摘要

A mixture of mining tailings for application in light soil, comprising coal-associated shales, municipal sewage sludge and post-consumption mineral wool, characterized with the following composition: coal-associated shales with pH of 6.8 in 1-mole KCl solution, sorption capacity of 12.6 cmol(+) kg -1 , total base cations of 12.3 cmol(+) kg -1 , saturation of sorption complex with base cations equal to 98%, carbon content of 62.4 g/kg -1 , nitrogen content of 2.23g/kg -1 , in the amount of 200-500 Mg ha -1 ; municipal sewage sludge with pH of 6.2 in 1-mole KCl solution, sorption capacity of 33.9 cmol(+) kg -1 , total base cations of 29.6 cmol(+) kg -1 , and saturation of sorption complex with base cations equal to 87%, carbon content of 199.8 kg -1 , with the C tot : N tot ratio of 7.2 in the amount 10 Mg ha 1 as well as post-consumed Grodan mineral wool from gardening, with high base cation content amounting to 52.04 cmol(+) kg -1 and high water capacity of 1450% in the amount of 400-500m 3 ha -1 .