(University of Belgrade – Technical Faculty in Bor, 2026) Papludis, Aleksandra; Alagić, Slađana; Milić, Snežana; Medić, Dragana; Jelena, Nikolić; Stankov Jovanović, Vesna; Stojanović, Gordana

In this work, the capacity of unwashed aerial parts of plant species: common ivy (CI), lilac (CL), and fig (CF), for DhA detection in biomonitoring purposes was investigated, using GC/MS, and the Pearson’s correlation analysis. Additionally, the detected DhA concentrations were compared with the interrelated lawmaking. GC/MS detected many considerable DhA quantities and documented different capacity of the investigated species for DhA deposition/bioaccumulation, where CI, and CF, showed a better ability for the atmospheric dust retention than CL. However, the highest DhA concentrations were detected in CL parts: 1200.9 μg/kg for stems, and 174.5 μg/kg for leaves, which is even higher than the related USEPA limit values (LVs) for residential soils. Simultaneously, for CL parts, the highest number of locations lacking in DhA was found. Other species showed that almost all selected locations had measurable DhA concentrations, often at the levels that surpassed mentioned USEPA LVs. This means that all locations with such levels may signify possible dermal risks from direct contacts with aerial parts. The results of the Pearson’s analysis confirmed that the industrial center in Bor, with the heating plant and the mining-metallurgical complex, can be one of significant but not the main source of DhA.

(Springer Nature, 2026) Manasijević, Dragan

In the present work, the selective oxidation behavior of Cu–Sn alloys was investigated using an integrated CALPHAD–HSC thermodynamic approach. Phase constitution and temperature- and composition-dependent activities of Cu and Sn were calculated using the assessed COST 531 thermodynamic database, while oxide stability, equilibrium oxygen partial pressures, and metal–oxide–gas equilibria were evaluated using HSC Chemistry. Activity-corrected oxidation boundaries were constructed to quantify selective oxidation windows as functions of alloy composition and temperature. The results demonstrate that non-ideal interactions substantially influence the predicted oxidation windows. In addition, the Redlich–Kister (RK) parameters describing the liquid Cu–Sn phase were implemented directly into HSC Chemistry through a dedicated activity-coefficient model, enabling self-consistent recalculation of Cu and Sn activities during Gibbs energy minimization. Equilibrium predictions at 1100 °C were compared using three treatments of the liquid phase: ideal solution behavior, fixed CALPHAD-derived activity coefficients, and the self-consistent CALPHAD–RK model. The three metallic-phase treatments produce only limited differences in the equilibrium oxidation degrees at 1100 °C. The self-consistent treatment provides the most conservative predictions, with slightly lower Sn oxidation and somewhat greater Cu oxidation than the simpler treatments. The influence of composition-dependent activity updating is most pronounced in dilute Cu–Sn alloys and during the final stage of Sn removal. This study provides a systematic computational assessment of composition- and temperature-dependent selective oxidation in Cu–Sn alloys and quantifies the influence of alternative metallic-phase descriptions on the predicted Sn-removal/Cu-loss relationship.

(University of Belgrade – Technical Faculty in Bor, 2026) Nujkić, Maja; Tasić, Žaklina; Kalinović, Tanja; Medić, Dragana; Radojević, Ana; Kalinović, Jelena; Jordanović, Jelena; Đorđievski, Stefan; Apostolov, Nataša

Organic compounds, heavy metals and other pollutants reach the soil, groundwater and surface water, then enter the human body through the food chain, representing a significant environmental and health problem. To develop sustainable and efficient methods for pollutant removal, increasing attention is being paid to the application of zeolites synthesised from industrial waste. Various industrial solid wastes are rich in silicates, crystalline and amorphous silicon, as well as aluminium, making them suitable raw materials for zeolite synthesis. Among the most commonly used waste materials are fly ash from coal, red mud, lithium and steel slag, coal tailings and other by-products of the metallurgical industry. This paper presents an overview of previous researches on the synthesis of zeolites from different types of industrial waste, with particular focus on the advantages and limitations of existing preparation procedures. The application of synthesised zeolites in gas purification, wastewater treatment and soil remediation is also analysed. The results of previous researches indicate the significant potential of these materials in environmental protection and the circular economy.

(Mining and Metallurgy Institute Bor, 2026) Petrović, Aleksandra; Kalinović, Tanja; Radojević, Ana; Kalinović, Jelena; Nujkić, Maja; Jordanović, Jelena

Atmospheric microplastics (MPs) are widely distributed across diverse environments. Urban areas exhibit the highest concentrations and deposition fluxes due to emissions from traffic, industry, and other anthropogenic activities. Remote regions also contain microplastics, highlighting their long-range atmospheric transport and persistence. Fibers and fragments, mainly composed of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA), polystyrene (PS), and tire wear particles (TWP), are the predominant forms of atmospheric MPs. Western European countries lead global scientific publication output, whereas studies in the Republic of Serbia remain scarce, highlighting the need for enhanced monitoring and research on MPs occurrences, impacts, and mitigation strategies.

(Scientific Technical Union of Mechanical Engineering Industry-4.0, Bulgaria, 2026) Gorgievski, Milan; Marković, Miljan; Štrbac, Nada; Grekulović, Vesna; Zdravković, Milica; Marković Jović, Marina; Božinović, Kristina

Corn stalk was used as a biosorbent for the adsorption of copper ions from synthetic solutions. To examine the mechanism of the adsorption process and identify the potential rate-determining step, the following kinetic models were used in this study: the pseudo-first order kinetic model, the pseudo-second order kinetic model, the Elovich kinetic model, and the interparticle diffusion model. Kinetic studies show that copper ions adsorption followed the pseudo-second order kinetic model. The maximum adsorption capacity was 5.5 mg g ⁻ ¹. The results indicate that corn stalk can be successfully used as a biosorbent for the adsorption of copper ions from synthetic solutions.

(University of Belgrade - Technical Faculty in Bor, 2026) Marković, Miljan; Gorgievski, Milan; Grekulović, Vesna; Štrbac, Nada; Marković Jović, Marina; Božinović, Kristina; Zdravković, Milica

Copper ion biosorption using raw and calcined chicken eggshells as biosorbents was conducted. The change in metal removal degree over time was monitored. Biosorption experiments were carried out in batch conditions for 90 minutes, as this duration is considered sufficient to reach equilibrium between phases. The experiments were conducted at three temperatures: 25 °C, 30 °C, and 35 °C. The results showed that the Cu2+ removal degree increased with time for both raw and calcined chicken eggshells. The results also indicated that system temperature significantly affects the efficiency of the biosorption process. Copper ion biosorption onto raw eggshells was considerably faster and more efficient, with a higher copper removal degree at higher temperatures. Biosorption onto calcined eggshells was less dependent on temperature, with Cu2+ removal being slightly faster at 35 °C, but the overall efficiency remained the same at all temperatures.

(Ugovorna okružna privredna komora Pirot, 2026) Janković, Lidija; Jevtić Tomić, Adrijana; Nikolić, Ivica; Milovanović, Goran

Inovacioni kapacitet predstavlja ključni pokretač ekonomskog razvoja i konkurentnosti, što je od izuzetnog značaja za zemlje Zapadnog Balkana. U tom kontekstu, rad se fokusira na ispitivanje odnosa između finansijske podrške, ulaganja preduzeća i inovacija u zemljama Zapadnog Balkana (Srbija, Bosna i Hercegovina, Crna Gora, Albanija i Severna Makedonija) u trogodišnjem periodu 2023–2025, na bazi podataka iz izdanja Evropske tabele inovacija (European Innovation Scoreboard – EIS). Primena Pearson-ove korelacije omogućila je ispitivanje veza između finansijske podrške, ulaganja firmi i broja inovatora. Rezultati ukazuju na to da finansijska podrška i investicije preduzeća imaju značajnu ulogu u oblikovanju inovacionog kapaciteta regiona. Ovi nalazi doprinose boljem razumevanju faktora koji utiču na nacionalne inovacione sisteme i predstavljaju osnovu za dalje strateško planiranje unapređenja inovacija.