Abstract
The thermogravimetric study of the sunflower husk pellets combustion was carried out at three heating rates: 5, 10, and 20 °C/min to increase the efficiency of agricultural waste disposal methods. The husk combustion process can be divided into several stages: the stage of moisture evaporation and the release of light fractions of volatile substances, the main stage of the release of volatiles and combustion, as well as the stage of the carbonaceous residue after-burning. The maximum mass loss was observed in the experiment with a heating rate of 10 °C/min, and it was equal to 91.99% of the total weight of organic matter. The average residual mass for all experiments was 3%. The higher heating value (HHV) of sunflower husk pellets was 19.2 MJ/kg. When implementing a biomass boiler with a capacity of 430 kW, the return period will be 3.43 years.
Highlights
Resources conservation in agriculture plays an important role
Based on TG data, the husk oxidation process can be divided into several stages: the stage of moisture evaporation and the release of light fractions of volatiles, the main stage of the release of volatiles and combustion, and the stage of the carbonaceous residue after-burning, which is consistent with the data of other authors [15, 17]
The husk combustion process can be divided into several stages: the stage of moisture evaporation and the release of light fractions of volatile substances, the main stage of the release of volatiles and combustion, as well as the stage of the carbonaceous residue after-burning
Summary
Resources conservation in agriculture plays an important role. The recycling of waste into secondary raw materials is of particular interest, since this allows eliminating or reducing the negative impact on the environment. Modern waste recycling technologies make it possible to extract all valuable components from recyclable raw materials and produce value-added products from them. The recycling of agricultural waste contributes to the formation of a circular economy, i.e., economic development along a circular path. Agriculture is the sector with the highest biomass production, its use contributes to reducing the use of fossil fuels and greenhouse gas emissions and to the development of ‘green markets’, new jobs, the production of high-tech products (food, feed, bioproducts, and bioenergy) [1]. Crop wastes are the large-tonnage source for the development of bioeconomics
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