Transformations of organic matter from brown coal introduced into anthropogenically transformed grounds

Aim of project
The project aims at an estimation of utilization of brown coal as an effective source of organic matter in anthropogenically transformed grounds. Dynamics of transformation of a particular fraction of organic matter as well as development of soil microorganism will be defined. The influence of humic acids developed during humufication process of organic matter from brown coal on the sorption of heavy metals will be determined. Sorption properties of brown coal will be determined using adsorption of water steam. Properties of humus of soil as well as dynamics of transformation of organic matter from brown coal will be determined in humicacids.

Thus, the purpose of the research is the determination of dynamics of transformation (mineralization and humufication) of organic matter from brown coal introduced into anhropogenically transformed grounds and in the estimation of the infl uence of humic acids (soil) as a protection barrier, which can limit phytoextraction of heavy metals by plants and their presence in food chain as well as migration into ground water.

Expected results
In the project we assumed that the organic matter from brown coal would be similar to humus of soil coming from traditional natural fertilizers. And so the addition of brown coal will enrich soil of low content of organic matter with humus and of properties similar to those from traditional sources (manure, green manures) of organic matter. It is particularly important in soils of our country, for which the balance of organic matter is disadvantageous. Predominant participation of light (sandy) soils, specifi city of the climate, structure of sowings do not contribute to accumulation of organic matter. In this situation, an additional source of organic matter in soils is essential. There is no doubt that the considered brown coal, because of, among others, slow mineralization, can be a very good source of humic substances in transformed anthropogenically soils.