In this paper, we studied the superlattice model, as a special class of materials in which the "nodes" of the crystal lattice are made up of interconnected thin films with a certain regular and periodic arrangement. We have theoretically determined the energy spectra that exciton quasiparticles can have in these structures. The number of film layer...

By Jovan Šetrajčić, Siniša Vučenović, Matilda Vojnović

The depletion of fossil fuel reserves and the increasing environmental concerns regarding their production and combustion have led to an exponential rise in interest in biofuels [1], among which biodiesel has attracted attention due to its characteristics such as high biodegradability, non-toxicity, and low emissions of carbon monoxide, particulate...

By Azra Halilović, Sabina Begić, Zoran Iličković, Amna Karić

Sphalerite is a sulfide zinc mineral, which also contains supporting metals such as iron, copper and lead. In this work, we dealt with the extraction of iron from sphalerite in a new oxidation system. Manganese dioxide was used as the primary oxidant, and KI was used as a secondary oxidizing agent with the aim of creating an I2/I- oxidation cycle i...

By Miroslav Sokić, Dimitrije Anđić, Nikola Vuković, Ivana Jelić, Mladen Bugarčić, Vaso Manojlović, Aleksandar Jovanović

In this work, I aim to examine the various influences of process parameters on the physical and mechanical properties of extruded polystyrene (XPS). Since XPS belongs to the group of thermoplastic polymers, its properties are significantly affected by thermal treatment, particularly temperature and pressure. However, in addition to these key factor...

By Sarah Lenasi

Technological developments and the demand for innovative products in catalysis and energy conversion/storage have driven the development of high entropy alloys (HEAs) and high entropy oxides (HEOs). HEAs, formed by combining four or more elements in nearly equal ratios, and HEOs have become prominent research topics for the above-mentioned technolo...

By Umay Çınarlı Yavaş, Ahmet Turan, Taner Akbay

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. ...

By Marina Marković, Milan Gorgievski, Miljan Marković, Vesna Grekulović, Nada Štrbac, Milica Zdravković, Kristina Božinović

In this research, the resulsts of bentonite characterization by XRF before and after adsorption are presented. The influence of temperature and pH on the capacity and efficiency of adsoption of lead (II) ions using bentonite is determined by adsorption experiments for initial lead (II) concentrations of 200, 300 and 400 mg/L, adsorbent dosage of 1 ...

By Amna Karić, Amra Odobašić, Edisa Papraćanin, Azra Halilović

Aluminium and its alloys, with superior mechanical properties and recyclability, are essential for industries such as transportation, construction, and packaging. Its recyclability supports sustainability by reducing greenhouse gas (GHG) emissions, energy consumption, and reliance on primary aluminium, making secondary aluminium production increasi...

By İlayda OZBAG TOGACAR, Umay Cinarli Yavas, Meral Baygul, Durdane Degerli, Sedat Arslan, Arif Karaca, Ahmet Turan

Aluminum dross contains high amount of metallic Al (up to %60 wt. Al) and regarded as a waste in aluminum casting operations. High metallic value in Al dross can be utilized via recycling procedure. In this study, Al dross was used in aluminothermic ferrochromium production with chromite ore and mill scale. Enthalpy, Gibbs Free Energy and Entropy o...

By Selçuk Yeşiltepe

Traditionally, the design of manufacturing technology and tool construction for metal forming processes relies on literature guidelines and the extensive experience of engineers. Today, the technology of deformation processing is in rapid development based on the application of computers, which enable extensive research and studies. This is also tr...

By Ibrahim Plančić, Amina Agić