Technical Faculty in Bor
Welcome to the digital repository of the University of Belgrade – Technical Faculty in Bor.
The software platform meets the current requirements that apply to the dissemination of scholarly publications and it is compatible with relevant international infrastructures.
Recent Submissions
Negative effects of fast fashion on the environment
(University of Banja Luka, Faculty of Technology, 2024) Urošević, Snežana; Urošević, Igor; Jovanović, Marina
Due to the development of fast fashion, the negative impacts of textile industry products on the environment have increased tremendously. Fast fashion is based on cheap products, usually of low quality and their products are based on trends, which is why their use stops after they stop being trendy, not because of their damage or loss of functionality. As fast fashion is based on the constant creation of new styles and clothes that are based on them and that are sold at very low prices, the products are used in a faster way for one or at most two seasons and then thrown away. The development of fast fashion has led to an extremely large increase in the amount of clothing that is thrown away, despite the fact that it is still completely usable. In this way, large amounts of waste are created, which in most cases are difficult to recycle, which is why they are disposed of in landfills. The relevance of this work lies in the increasing interest in environmental protection. The aim of this paper is to provide a contribution to the understanding of the complex problems arising from large amounts of textile waste that negatively affect the environment, as well as to offer solutions to reduce the negative effects in order to preserve the environment and promote the sustainability of the textile industry.
Analysis of business processes in railways and public enterprises of Serbia
(University of Belgrade, Technical faculty in Bor, 2024) Marković, Filip; Urošević, Snežana
Managing an organization of any kind and achieving its goals, especially in terms of increasing effectiveness, efficiency and realization of set goals and strategies, requires a thorough understanding of its internal functioning and structure. It is crucial to understand that the organization's activities are realized through a series of connected and goal-oriented business processes. Through the review of the conceptual definition of business processes and the consideration of models for their analysis, the specifics of the application of these processes in the context of the railway and the public sector in the Republic of Serbia are explored. The current context of research in the field of business processes in Serbia is analyzed, with a focus on the characteristics of the railway and public sectors.
Supply chains and logistics of transport in SME textile and clothing industry
(Union of Engineers and Textile Technicians of Serbia, Belgrade, 2024) Dimitrijević, Dragan; Dimitrijević, Natalija; Gligorijević, Jasmina; Urošević, Snežana; Adamović, Živoslav; Cvetković, Filip
Today, in times of general globalization of business, efficient business optimization measures are necessary, as well as innovative ways of organizing supply chains and transport systems, which are based on the exploitation of invariant and adaptable possibilities, i.e. on the efficient exploitation of information system flexibile modules, with a high degree of automation of all activities and comprehensive implementation of ICT. By the way, one of the most important links in the process of business or production supply chains for companies in the textile and clothing industry is the transport of materials and goods, which with its adequate technological or organizational solutions enables cost reduction and increase in productivity and business efficiency, thereby strengthening the competitiveness of the company. These are precisely the elements of innovative logistics of transport systems that, as key components in the supply chain organize, regulate and monitor the process of transport (goods and materials) and adequate storage, but also optimize the control of process stocks, finished products and raw materials, with minimal costs and acceptable impact on the environment, which enables an increase in the effectiveness and economic efficiency of all technical and organizational systems. Based on the current global state of the clothing industry, as well as trends in business, the future development of supply chains and logistics of transport (of all kinds) can be anticipated as a diffusion spillover in the field of artificial intelligence and virtual show or quantum computing, with self-regulation and taking appropriate actions, with a direct prediction of anomalies in logistics costs and performance, as well as in the needs of artificial intelligence and automation of some parts or complete areas of business processes, whereby as a result, the obvious need for quantitative-qualitative strengthening and increasing the capabilities of human resources will be imposed.
Photocatalytic degradation of naphthalene, using various nanocomposite materials mostly based on metal oxides
(Inženjersko društvo za koroziju, Beograd, 2024) Nedelkovski, Vladan; Radovanović, Milan; Alagić, Slađana
Polycyclic aromatic hydrocarbons (PAHs) cause significant environmental and health concerns, necessitating effective remediation strategies. Specifically, biological treatments are only effective for PAH compounds with lower molecular weights, while for the efficient elimination of more complex PAH structures, the photocatalytic method is more recommended. Photocatalytic degradation has primarily relied on TiO2-based materials. However, this review focuses on the utilization of various nanomaterials for the degradation or total removal of naphthalene from the environment, and especially from wastewater. Precisely speaking, the photocatalytic activity of various nanocomposite materials containing (predominately) metal oxides is discussed, with an emphasis on photocatalytic degradation mechanisms and the identification of degradation intermediates. Key findings reveal that these materials hold substantial promise, and that photogenerated holes, superoxide radicals, and hydroxyl radicals play crucial roles in the degradation processes, highlighting additionally the unique mechanisms of these processes. Important information about the intermediates and pathways of naphthalene photodegradation discussed in the mechanisms of degradation has been confirmed using gas chromatographymass spectrometry (GC-MS).
Valorization of zinc from the eaf dust using the hydrometallurgical process
(Mining and Metallurgy Institute Bor, 2024) Trifunović, Vanja; Milić, Snežana; Avramović, Ljiljana; Božić, Dragana
Since the dust from the electric arc furnace (EAF dust) contains a high percentage of zinc in its composition, it can be used as a secondary raw material for zinc valorization. After characterization the original sample of the EAF dust, it was treated using the hydrometallurgical process. After the applied hydrometallurgical treatment of the EAF dust, a pregnant leaching solution, rich in zinc and other impurities, was obtained. To valorize zinc, and obtain the commercial quality ZnSO4·H2O product, the impurities were removed by purification the pregnant leaching solution through the processes of neutralization and cementation. From the purified pregnant leaching solution, using the evaporation and crystallization processes, a product was obtained and its characteristics are in accordance with the characteristics of the ZnSO4·H2O product on the market. The fact that ZnSO4·H2O is the only crystalline phase in the obtained zinc product, it was confirmed by the XRD analysis.