Wyniki wyszukiwania - BazTech

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Improving the technology of obtaining humic substances from peat

Petrova Zhanna, Sniezhkin Yurii, Petrov Anton, Novikova Yuliia, Badekha Andrii

Journal of New Technologies in Environmental Science

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2023

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Vol. 7, nr 4

121--124

EN

The study of the extraction of humic substances from peat is considered in the work. During the studies of various mode parameters of extraction, the optimal one was determined, which obtained a higher yield of humic substances. For decades, the arguments of plant growers about which forms of fertilizers are more useful for soil fertility and more effective for plants - organic or mineral - have not subsided. Each of these types has its own disadvantages and advantages, and as it turned out later, it is possible to keep the soil healthy and get the maximum benefit only with a competent combination of them.

2

Drying of composite raw material based on peat solid residue after extraction of humic fertilizers and corn crop residues

Sniezhkin Yurii, Petrova Zhanna, Vorobiov Leonid, Petrov Anton, Novikova Yuliia

Journal of New Technologies in Environmental Science

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2023

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Vol. 7, nr 3

99--102

EN

The article presents studies of the drying kinetics of composite raw materials based on solid peat residues after extraction of the humus component and corn harvesting residues. The resulting heat of combustion of composite raw materials is 1.2-1.4 times higher than that of peat in its native state. Moreover, their fairly high calorific value allows them to be used as an alternative fuel in domestic and municipal energy.

3

The latest technology for obtaining composite biofuel and fertilizers

Sniezhkin Yurii, Petrova Zhanna, Paziuk Vadim, Petrov Anton, Novikova Yuliia

Journal of New Technologies in Environmental Science

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2022

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Vol. 6, nr 1

41--50

EN

One of the main problems of the modern world is the search for and supply of renewable energy resources that could compete with oil and natural gas. In recent years, the world is entering the era of biotechnology, which uses renewable raw materials to produce energy and materials. One of the sources of alternative types of fuel is peat, which is the cheapest type of fuel for the population, raw material for nutritious soils and organic-mineral fertilizers. The purpose of the work is to create the latest technology for obtaining composite fuel and fertilizers. The article examines the study of drying kinetics on a convective drying stand with an automatic system for collecting experimental data and their processing. The optimal modes of drying the composite mixture based on the solid residue of peat after the extraction of the humic component with crushed corn residues have been determined. According to the methods, the kinetics of heat-moisture exchange during drying of the composite mixture was calculated and it was determined that the generalized drying curves of the composite mixture coincide with the obtained experimental curves. The technology for obtaining humic substances and biofuel from peat and nutritious corn residues has been developed. Biofuel obtained by the technology on the basis of solid residue after extraction of humic substances from peat and nutritious residues of corn meets the standards of quality fuel and is 12.3 MJ/kg.

4

Heat and mass exchange processes during drying of composite mixture from peat waste and corn stalk

Petrova Zanna, Paziuk Vadim, Petrov Anton, Novikova Yuliia

Journal of New Technologies in Environmental Science

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2022

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Vol. 6, nr 4

115--118

EN

This paper presents a study of the heat and mass exchange processes of drying composite raw materials based on the solid residue after the extraction of humic substances from peat and nutritious corn stalk. A study of the drying kinetics of the composite mixture was conducted and energy-efficient modes were determined. The kinetics of heat-moisture exchange during drying of the composite mixture was calculated, and the kinetic regularities of drying were determined and summarized.

5

Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand

Petrova Zhanna, Sniezhkin Yurii, Paziuk Vadym, Novikova Yuliia, Petrov Anton

Journal of Ecological Engineering

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2021

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Vol. 22, nr 6

159--166

EN

In Ukraine, the problem of processing and utilization of sludge deposits that are formed during the treatment process at wastewater treatment plants is relevant. Unprocessed sewage sludge merges into overcrowded sludge sites every year, which leads to a deterioration of the environment and living conditions in Ukraine. Therefore, the aim of the work was to study the processing of sludge, the creation of pellets based on their composition with peat and biomass and their drying. The article presents the studies of drying kinetics of composite pellets based on peat, obsolete sludge and biomass on an experimental convective drying stand. The influence of the proportions of the components of the composition on the drying time was determined and the ratio at which the drying time of the pellets is shorter and the pellets are of better quality was selected. A comparison of the drying time of the sludgepeat composition and its components was performed, which shows that during the drying of the composite pellets, the intensification of the drying process is observed. The study related to the effect of the diameter of the pellets on the duration of drying showed that the duration of drying increases along with diameter. The presented comparison of drying kinetics of twoand three-component pellets shows the same nature of the drying curves and the drying time is in the range of 17-18 minutes. The optimal ratio of components for quality granulation was selected. The effective drying regimes of composite pellets based on silt deposits, peat and biomass were determined.