Technical Faculty in Bor
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Case study on metal(loid)s distribution in linden tree parts, in areas with hight environmental pollution
(University of Belgrade, Technical Faculty in Bor, 2025) Kalinović, Tanja; Radojević, Ana; Kalinović, Jelena; Jordanović, Jelena; Šerbula, Snežana
The investigation focuses on the distribution of Al, Fe, Cu, Zn, Pb, As, and Cd, in the roots, branches and leaves of linden tree, a very common plant species used in traditional medicine, sampled in the area affected by pollution from the mining-metallurgical facilities for copper production, and one unpolluted zone. Plant samples were collected and processed following the established scientific methods, while concentrations of metal(loid)s were determined using the ICP-AES. Distinct patterns in the metal(loid)s distribution in the linden parts were revealed, which varied depending on the environmental pollution levels, highlighting obvious differences between the polluted and unpolluted zones.
Comparative assessment of potentially toxic elements bioaccumulation and biomonitoring ability using rosehip, hazelnut, and black elder leaves
(Crnogorsko društvo za koroziju, zaštitu materijala i zaštitu životne sredine, 2025) Šerbula, Snežana; Kalinović, Tanja; Radojević, Ana; Kalinović, Jelena; Jordanovic, Jelena
This paper aims to evaluate and compare the environmental role of the rosehip, hazelnut and black elder, in areas with various anthropogenic sources of pollution. In addition to the essential elements for plants such as Ni, Zn, Cu and Fe, the leaves of the studied plant species contained certain amounts of toxic or non-essential elements such as Cd, As, Pb and Al. The concentrations of the analysed elements in the hazelnut and elder leaves from the urban-industrial (UI) and rural (R2) sampling sites stood out in the box plot analyses by the highest number of outlying (mild and extreme) data points. Cu and Pb were the elements with the highest values of the Enrichment factor (EF), in the leaves of the studied plant species, while enrichment was also noted for Zn, Fe, Al, As and Cd, depending on the sampling site and plant species. The highest EF values were calculated for the samples from the UI and R2 sampling sites. The rosehip, hazelnut and elder leaves have a good retention capacity for particulate matter originating from the air containing potentially toxic elements (PTEs), and thus represent green resources for monitoring and mitigation of environmental pollution.
Potential of using zinc processing tailings (ZPT’s) in the production of burnt clay bricks
(University of Belgrade, Technical faculty in Bor, 2025) Messai, Ali; Berrekbia Linda; Meramria, Ikram; Menendez-Aguado, Juan Maria; Fernandez-Perez, Begona; Nikolić, Vladimir; Trumić, Milan; Boustila, Amir
Zinc processing tailings (ZPTs) from the Kharzet Youcef processing complex (Setif- Algeria) are mainly stockpiled in tailings dumps without use, occupying a significant area with potentially influencing the environment and human health. Incorporating ZPTs in building materials manufacturing is an effective solution to meet the dual objectives of environmental protection and economic development. The study investigates the influence of integrating ZPTs to partially replace clays and firing temperature on the physic-mechanical properties of fired clay bricks (FCB). Microstructural, chemical, and mineralogical analyses of ZPT and clays were carried out by SEM-EDS, XRF and XRD, respectively. Seven mixtures were produced with various percentages of ZPTs added to clays (0%, 5%, 10%, 15%, 20%, 25% and 30%) and were fired to three different temperatures (950, 1000 and 1050 °C) at a ramp rate of 5 °C. Physic-mechanical tests were carried out on different brick specimens, and the results obtained showed the FCB incorporated with 30% of ZPTs produced the highest flexural strength of 6.24 MPa, compressive resistance of 29.78 MPa, bulk density of 1.37 g/cm3 and water absorption of 15.1% at 900 °C. Therefore, recycling ZPTs for FCB manufacturing is a feasible alternative waste disposal solution for sustainable development while reducing negative environmental impacts.
Proposal of a Method for Calculating the Bond Work Index for Samples with Non-Standard Feed Particle Size Distribution
(MDPI, Switzerland, 2025) Nikolić, Vladimir; Medina Pierres, Jesús; Sanchez Calvo, Maria; Menendez-Aguado, Juan Maria; Trumić, Milan; Trumić, Maja; Milošević, Vladan
Determining the Bond grindability test in a ball mill is one of the most commonly used methods in the mining industry for measuring the hardness of ores. The test is an essential part of the Bond work index methodology for designing and calculating the efficiency of mineral grinding circuits. The Bond ball mill grindability test has several restrictions, including the sample’s initial particle size distribution (PSD). This paper presents a method for calculating the Bond work index when the Bond ball mill grindability test is performed on samples with non-standard PSD. The presented equation includes a correction factor (k) and is applicable only for P100 = 75 μm. The defined method is then compared with methods proposed by other researchers, and conclusions are drawn as to which method results in less deviation. The presented model resulted in a mean square error of 0.66%.
Utilisation of Zinc Processing Tailings (ZPTs) in Fired Clay Bricks Manufacturing: Case Study
(MDPI, Switzerland, 2025) Messai, Ali; Menendez-Aguado, Juan Maria; Berrekbia, Linda; Meramria, Ikram; Fernandez-Perez, Begona; Nikolić, Vladimir; Trumić, Milan; Boustila, Amir
Zinc processing tailings (ZPTs) of the Kharzet Youcef processing complex, Setif, Algeria, are mainly stockpiled in tailing dumps without use, occupying significant surfaces and negatively influencing the human environment and health. Incorporating ZPTs into building materials manufacturing is an effective solution to meet the dual objectives of environmental protection and economic development. This study investigates the influence of firing temperature and integrating ZPTs as a partial replacement for clay on the physic-mechanical properties of fired clay bricks (FCBs). Microstructural, chemical, and mineralogical analyses of ZPTs and clay were carried out by SEM-EDS, XRF, and XRD, respectively. Seven mixtures were produced with various percentages of ZPTs added to clay (0%, 5%, 10%, 15%, 20%, 25%, and 30%) and were fired at two different temperatures (900 and 1000 °C) at a ramp rate of 5 °C. Physic-mechanical tests were carried out on different brick specimens, and the results obtained showed that the FCBs incorporated with 10% of ZPTs produced the highest flexural strength of 6.24 MPa, compressive resistance of 29.78 MPa, bulk density of 1.37 g/cm3, and water absorption of 15.1% at 900 °C. Therefore, the recycling of ZPTs for FCBs manufacturing is feasible and an effective alternative waste disposal solution for sustainable development while reducing negative environmental impacts.