Technical Faculty in Bor
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Chemometric Evaluation of 16 Priority PAHs in Soil and Roots of Syringa vulgaris and Ficus carica from the Bor Region (Serbia): An Insight into the Natural Plant Potential for Soil Phytomonitoring and Phytoremediation
(MDPI, 2025) Papludis, Aleksandra D.; Alagić, Slađana Č.; Milić, Snežana M.; Nikolić, Jelena S.; Jevtović, Snežana Č.; Stankov Jovanović, Vesna P.; Stojanović, Gordana S.; Gianniantonio Petruzzelli
The soil phytomonitoring and phytostabilization potential of Syringa vulgaris and Ficus carica was evaluated regarding 16 priority polycyclic aromatic hydrocarbons (PAHs) using a chemometric approach and the calculation of bioconcentration factors (BCFs) for each individual PAH in plants’ roots from each selected location in the Bor region. PAHs in roots and the corresponding soils were analyzed using the QuEChERS (Quick, Effective, Cheap, Easy, Rugged, Safe) method with some new modifications, gas chromatography/mass spectrometry, Pearson’s correlation study, hierarchical cluster analysis, and BCFs. Several central conclusions are as follows: Each plant species developed its own specific capability for PAH management, and root concentrations ranged from not detected (for several compounds) to 5592 μg/kg (for fluorene in S. vulgaris). In some cases, especially regarding benzo(a)pyrene and chrysene, both plants had a similar tactic—the total avoidance of assimilation (probably due to their high toxicity). Both plants retained significant quantities of different PAHs in their roots (many calculated BCFs were higher than 1 or were even extremely high), which recommends them for PAH phytostabilization (especially fluorene, benzo(b)fluoranthene, and benzo(k)fluoranthene). In soil monitoring, neither of the plants are helpful because their roots do not reflect the actual situation found in soil. Finally, the analysis of the corresponding soils provided useful monitoring information.
Change in pH and conductivity during the rinsing and the biosorption of copper ions onto pumpkin peel
(University of Zenica, Faculty of Metallurgy and Technology, 2025) Marković, Marina; Gorgievski, Milan; Marković, Miljan; Grekulović, Vesna; Štrbac, Nada; Zdravković, Milica; Božinović, Kristina
The changes in pH and conductivity during the rinsing of the pumpkin peel, and the biosorption of Cu2+ ions, were the subject of this work. The obtained data showed that the pH value of the solutions increased during the rinsing of the biosorbent, as a result of the transfer of H+ ions from the aqueous phase into the structure of the pumpkin peel. An increase in the conductivity value was observed in the initial period of rinsing the pumpkin peel, followed by a decrease. The increase in conductivity in the initial phase contributed to the self-leaching of the alkali and alkaline earth metal ions from the structure of the pumpkin peel, which were transferred into the aqueous phase. The further decrease in conductivity is a result of the dilution of the aqueous phase. The pH value decreased during the biosorption of Cu2+ ions, as hydrogen ions were transferred from the pumpkin peel structure into the solution, and then exchanged with Cu2+ ions. The conductivity value increased during the biosorption process, with a rapid increase in the initial period of 5 minutes, due to the transfer of alkali and alkaline earth metal ions into the solution.
Characterization of electrode materials from spent batteries in the process of recovering valuable metals
(University of Belgrade, Technical Faculty in Bor, 2025) Medić, Dragana; Nujkić, Maja; Tasić, Žaklina; Nedelkovski, Vladan; Đorđievski, Stefan; Alagić, Slađana; Milić, Snežana
The chemical and phase analysis of electrode materials from spent batteries is essential for identifying recyclable components and optimizing metal recovery processes. In this study, the electrode material from a spent cell of an unknown manufacturer was analyzed using inductively coupled plasma mass spectrometry (ICP-MS) and powder X-ray diffraction (XRD). XRD results revealed that the anode material consists of three crystalline phases: NiO, LaCoO3, and CeO₂, while the cathode material contains Ni(OH)₂ and Ni. ICP-MS analysis confirmed the presence of lanthanides in the anode material. Given that lanthanide deposits are concentrated in only a few countries, their recovery from spent batteries presents an opportunity for nations without natural reserves to secure their supply through recycling. This study highlights the potential for sustainable resource management by recovering metals from electronic waste.
Raspberry and blackberry grown in Serbia from the aspect of the green agenda
(Naučno-stručno Društvo za zaštitu životne sredine Srbije ECOLOGICA, 2024) Zdravković, Milica; Grekulović, Vesna; Štrbac, Nada; Zdravković, Bojan; Gorgievski, Milan; Marković, Miljan; Marković, Marina
Serbia is one of the leading countries in the world in terms of raspberry and blackberry production. Production is focused on the cultivation of raspberries and blackberries for the purpose of the fruit selling, so large amounts of leaves of these two plants remain unused on plantations or are burned. In tradicional medicine, the healing effects of raspberry leaves and blackberry leaves are known, but due to the large production, it is impossible to use all the leaves for these purposes. Newer research indicates numerous possibilities of application of raspberry leaves and blackberry leaves. An important aspect is the use of raspberries and blackberries that grow near the mine. In addition to being used in medicine and pharmacy, extracts can be used as metal corrosion inhibitors. Depleted plant mass that can be used for biosorption, as a binding agent and starting component of cellulose production. Obtaining the extract instead of burning the leaves fulfills the first condition of the Green Agenda, which is decarbonization and reduction of industrial emissions. Environmental pollution is reduced with a focus on air quality. Better energy efficiency is achieved by an adequate selection of extragens. The circular economy is achieved by a system in which production resources (fruit and leaves) are encouraged, and waste, waste emission and energy outflow are significantly reduced. In addition to encouraging the economy and sustainable plant food systems that are characteristic of the Western Balkans, protection and investment in ecosystems is achieved.
Malina i kupina gajene u Srbiji sa aspekta Zelene agende
(Naučno-stručno Društvo za zaštitu životne sredine Srbije ECOLOGICA, 2024) Zdravković, Milica; Grekulović, Vesna; Štrbac, Nada; Zdravković, Bojan; Gorgievski, Milan; Marković, Miljan; Marković, Marina
Srbija je jedna od vodećih zemalja u svetu po proizvodnji maline i kupine. Proizvodnja je usmerena na gajenje maline i kupine radi prodaje ploda, pa velike količine lista ove dve biljke ostaju neiskorišćene na plantažama ili bivaju spaljene. U narodnoj medicini je poznato lekovito dejstvo lista maline i lista kupine, ali je zbog velike proizvodnje nemoguće iskorititi svu količinu listova u ove svrhe. Novija istraživanja ukazuju na brojne mogućnosti primene lista maline i lista kupine. Važan aspekt predstavlja upotreba maline i kupine koja raste u blizini rudnika. Pored upotrebe u medicini i farmaciji ekstrakti se mogu koristiti kao inhibitori korozije metala. Osiromašena biljna masa se može primeniti za biosorpciju, kao vezivno sredstvo i polazna komponenta proizvodnje celuloze. Dobijanjem ekstrakta umesto spaljivanja listova ispunjava se prvi uslov Zelene agende, a to je dekarbonizacija i smanjenje industrijskih emisija. Smanjuje se zagađenje životne sredine sa fokusom na kvalitet vazduha. Adekvatnim izborom ekstragensa postiže se bolja energetska efikasnost. Cirkularna ekonomija se postiže sistemom u okviru kojeg se podstiču proizvodni resursi (plod i list), a otpad, emisija otpada i energetski odliv bitno umanjuju. Pored podsticanja privrede i održivih prehrambenih sistema biljaka koje su karakteristične za Zapadni Balkan, postiže se zaštita i investiranje u ekosisteme.