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Comparison of municipal waste management systems using LCA. South Backa waste management region. A case study

Stepanov J., Ubavin D., Prokic D., Budak I., Stevanovic-Carapina H., Stanisavljevic N.

Environment Protection Engineering

2018

Vol. 44, nr 3

33--49

The Republic of Serbia as a candidate country for the EU is obliged to comply with EU directives. This refers to the waste management sector as well. Different goals need to be fulfilled and the current waste management practice has to be improved in order to meet all regulatory EU requirements. Therefore, any piece of information that would support future waste management decisions is of great significance for developing and streamlining future strategies. The life cycle assessment (LCA) is a popular tool widely used for assessment of environmental impacts of waste management systems. This paper focuses on a LCA of four waste management scenarios used in selected region in Serbia (South Backa) and five indicators for the comparison and evaluation of municipal solid waste management strategies. The analysis includes the current situation of waste management in this region, as the base scenario, and three alternative scenarios. The combined life cycle inventory (LCI) model and life cycle impact assessment (LCIA) method has been used to evaluate the municipal solid waste system with the purpose of identifying environmental benefits and disadvantages, as well as economic cost of defined scenarios of waste management systems that could be implemented. The results clearly indicate the difference between the scenarios and show the influence of implementation of composting, RDF treatment, incineration and increased recycling rates on the environmental performance and economic cost of municipal solid waste management in the South Backa region.

Application of contemporary engineering techniques and technologies in the field of dental prosthetics

Budak I, Kosec B., Sokovic M.

Journal of Achievements in Materials and Manufacturing Engineering

2012

Vol. 54, nr 2

233--241

Purpose: During the last couple of decades, development of medical science has been marked with an ever more pronounced interdisciplinary character which, in part, can be attributed to various engineering applications. Rapid development of computer-aided technologies, which completely transformed production engineering, also left an indelible mark on dental prosthetics. Striving towards its primary goal - primum non nocere (’Above all, do not harm!’), the area of dental prosthetics has introduced numerous novel technologies and methods which allow manufacture of precision, custom-made, optimal dental replacements. Design/methodology/approach: The aim of research - to contribute to integration of modern engineering technologies and computer-aided systems into dental prosthetics with special emphasis on efficient manufacture of dental replacements with precision which allows clinical applicability. The subject scope of the paper comprises modelling, manufacturing with special emphases on materials, quality inspection and environmental impact assessment (cleaner production). Findings: In the industrially developed countries, efforts have been concentrated towards advancement of modelling and manufacture of dental replacements by introducing modern computer equipment and state-of-the-art materials and machining technologies. However, in countries in transition, dental replacements are predominantly manufactured in a traditional, manual way prone to errors. The reasons for this situation are various. Practical implications: It is expected that this trend will have a significant impact on the further development of production engineering techniques and technologies in the near future. Originality/value: The paper evolved on the premise that there is a room for more intensive co-operation between the two disciplines - dental prosthetics and engineering, with a prospect for success of the development of novel, original solutions. In that sense, this paper should serve to both professions - production engineers and dentists.