Prospective ameliorants based on industrial wastes of timber enterprises

As a result of activity of enterprises of the timber industry complex for the production of paper products, significant volumes of secondary mineral raw materials are formed, which need to be utilized. Soil liming is a promising direction of utilization of such raw materials. By methods of X-ray diffraction, X-ray fluorescence and thermal analyses, mass spectrometry with inductively-coupled plasma, radiological studies the material composition of secondary mineral resources of Syktyvkar TP (dust of electric filters of furnaces, slaked lime obtained from substandard calcium oxide, bark and wood ash) has been determined. The determined features of changes in phase and chemical composition of secondary raw materials allowed to develop original compositions of agrochemicals named “Edemit” and “Pushonka plus”, which were tested for soil liming on the experimental field. It was found that liming contributed to the increase of soil pH value from 4.6 to 6.6 on average, the degree of saturation with bases up to 44—92 % and decrease of hydrolytic acidity twice as compared to the control variant.