Circular economy on organic waste management
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330.341+628.4.02 (1)
Dynamics of the economy. Economic movement (453)
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OLEINIUC, Maria. Circular economy on organic waste management. In: Creşterea economică în condiţiile globalizării, Ed. 16, 12-13 octombrie 2022, Chișinău. Chisinau, Moldova: INCE, 2022, Ediția 16, pp. 39-39b.
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Creşterea economică în condiţiile globalizării
Ediția 16, 2022
Conferința "Creşterea economică în condiţiile globalizării"
16, Chișinău, Moldova, 12-13 octombrie 2022

Circular economy on organic waste management

CZU: 330.341+628.4.02
JEL: Q57

Pag. 39-39b

Oleiniuc Maria
 
"Alecu Russo" State University of Balti
 
 
Disponibil în IBN: 3 noiembrie 2022


Rezumat

Relevance. Organic waste accounts for more than half of the solid waste stream in many low-income countries. Many cities have found that diverting organic waste from disposal sites can lead to considerable health, economic and environmental benefits. Organic waste management strategies such as composting and anaerobic digestion, which involve using natural processes to convert organic content into biogas, are feasible options in most locations, but require careful planning and implementation. Meanwhile, food waste collected in ordinary cities can contain pollutants. And this danger (albeit unlikely, but quite real) forces us to apply all fertilizers obtained as a result of processing only on soils that are not of agricultural significance. The goal of the study is to determine the benefits of redirecting organic waste. Research methods: analysis and synthesis, induction and deduction, history and logic, tabular and graphical method The resulting. The most obvious way to remove such waste is to process it into composting – fertilizer for the soil, for which you just need to let them rot. Another way of processing wet biomass is its fermentation without oxygen access, which leads to the release of so-called biogas containing (rounded) up to 2/3 of the volume parts of methane, 1/3 of carbon dioxide, 1% hydrogen sulfide and small impurities of nitrogen, oxygen, hydrogen and carbon monoxide. Biogas can be burned in conventional gas equipment – boilers, turbines and piston engines, receiving heat and electricity. At the same time, it should be remembered that a small content of hydrogen sulfide in biogas can cause sulfurous corrosion of some parts, and combustion poorer (in comparison with conventional natural gas) mixture is regulated within narrower limits (or requires specially designed burners). In recent years, various methods of synthesis of liquid fuels from biogas have been developed.

Cuvinte-cheie
organic waste, composting, Anaerobic digestion, etc.