Geoekologiya, 2022, Vol. 3, P. 69-81


T. I. Yuganova*, 1

Sergeev Institute of Environmental Geoscience, Russian Academy of Sciences, Ulanskii per., 13, str. 2, Moscow, 101000 Russia

*E-mail: tigryu@gmail.com


Currently, European countries are trying to avoid the direct disposal of biodegradable waste in order to reduce their impact on the environment. In recent decades, a key role in waste management is played by mechanical and biological waste treatment (MBT) through aerobic composting and/or anaerobic digestion. MBT reduces the amount of organic waste sent to landfills by recovering homogeneous fractions for use in energy/material recovery and the production of a bio-stabilized product (stabilized organic waste – SOW) that has a lower environmental impact.

The composition and quality of SOW are considered, which vary significantly depending on the source of raw materials, the degree of separation of the initial waste, the MBT technology, the duration of the maturation stage, and even the composting season. SOW is compared in terms of the level of biological stability with ordinary MSW of different ages buried at a landfill: with MBT, wastes “age” significantly. It is shown that the content of solid organic carbon in the waste decreases during MBT. The amount of aliphatic methylene groups decreases, the content of aldehydes, ketones, carboxylic acids and esters decreases, the content of heavy metals (HM) and carbonate increases. An increase in the decomposition of organic material is indicated by a higher content of solid humic acids in the SOW. For some HMs, the degree of SOW humification positively correlates with metal solubility.

Keywords: municipal solid waste, mechanical-biological treatment, stabilized waste, composting, organic matter, heavy metals, humification



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