This paper gives a solution to the problem of improving a solid waste management system through the integration of two systemic methodologies: material flow analysis and life cycle assessment. The proposed method serves to assess the effectiveness of the implementation of various waste management measures. The study was carried out with the detailing of the anaerobic digestion process since it is this recycling technology that plays a key role in reducing the amount of waste along with the production of renewable energy and in reducing the adverse effects on the external environment. Simulation of changes in waste properties in a certain processing sequence was carried out in order to obtain reliable information for further optimization of the system. The proposed modeling of waste treatment processes based on their constituent equations made it possible to adequately reflect the impact of changes in working conditions on all subsequent output flows. The analysis of material flows for an enterprise of mechanical and biological treatment of waste is presented and the use of the model in the context of the process of anaerobic digestion of household waste is illustrated. It was found that anaerobic digestion potentially makes it possible to obtain 4.1 Gj of biogas energy from 1 HSW, which corresponds to 460 kWh of electricity and 2060 MJ of heat. The developed method is based on a combination of analysis of material flows and life cycle assessment. The method acts as a tool for comparing alternative technologies and waste management scenarios. In the future, it can serve to support waste management decisions at both the strategic and operational levels
Humanity has existed in special living conditions since March 11, 2020 when WHO declared COVID-19 a global pandemic. This coronavirus disease has already taken more than 6.55 million of people's lives from almost 625 million of officially confirmed cases of people infected around the world at the beginning of October 2022. Lot of university lecturers, teachers and researchers are concerned by new challenges in the education and science process. Therefore, many new recommendations and methodologies have been published for effective teaching in the pandemic time focusing on different forms of distance digital education. Certainly, the process has been actual for biological disciplines too where the biggest problems appeared with the organisation of field courses. Every country and even every university have been looking for optimal ways within their epidemic situation according to country restriction rules. Therefore, we have generalized this experience, as well as developed protocols on example of iNaturalist platform ( https://www.inaturalist.org/ ) for effective use of citizen science tools not just for distance learning of botanical cycle disciplines in the pandemic time and beyond, but also for collecting valuable data about plant distribution during this process. We present a future-oriented vision of the solution of biodiversity and sustainability education.
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