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...

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

To analyze the co-combustion process of coal and biomass in a steam boiler furnace originally designed for pulverized coal combustion, it is crucial first to investigate the dynamic behavior of particles within the aero-mixture channels. Due to differences in material properties and particle size distributions, the behavior of coal and biomass part...

By Amel Mešić

The increasing need for sustainable resource utilization has driven the exploration of waste-derived materials for industrial applications. This study investigates the valorization of cattle bone waste into high-purity hydroxyapatite-rich bone ash and its application in ceramics. The beneficiation process involved boiling, drying, controlled calcin...

By Temitope Ologunwa, Rasheed Kolade, Ayodeji Oke, Oluyemi Ologunwa

This study presents the development of an eco-efficient laboratory-scale production route for longsteel products, focusing on sustainable casting and hot deformation processes. Conventionalcasting using 80x80 mm molds and gravity filling generated significant shrinkage defects, leadingto scrap generation, repeated melting, and reduced material effi...

By Emre Alan

Monitoring cavitation erosion in materials is crucial for their performance in environmentscharacterized by severe fluid flow conditions. Materials such as metals, ceramics, and composites,commonly used in these applications, must possess specific mechanical properties to effectivelyresist cavitation erosion. Additionally, various environmental fac...

By Ana Alil, Stanica Nedović, Sanja Martinović, Tatjana Volkov-Husović

The demand for stainless steels has been steadily increasing across industries such as automotive,aerospace, aviation, medical technology, and household appliances, primarily due to their excellentcorrosion resistance, low thermal conductivity, and favorable strength-to-weight ratio. Many ofthese applications involve components with complex geometr...

By Derviš Mujagić, Belma Fakić, Omer Beganović

The translational symmetry of the distribution of atoms (ions) of the charge carriers (electrons or holes) system is broken by sputtering (doping) due to the existence of two boundary surfaces. This is a model of high-temperature superconductors in which the observed symmetry breaking orthogonal to the CuO plane is treated as a perturbation. Single...

By Jovan Šetrajčić, Siniša Vučenović

Metallic materials in granular packings show different electrical properties from their bulk counterparts. In this paper, we investigate the temporal evolution of the electrical conductivity of granular metals. We use metallic beads arranged in different one-, two- and three-dimensional ensembles through which different constant currents are inject...

By Maja Đekić, Ajla Karić, Amra Salčinović Fetić, Melisa Baždar, Belma Husković, Dijana Dujak, Diana Ćubela

This study investigated the mechanical properties of a series of Fe-Cr-Mn (Mo)-N alloys. The chromium content ranged from 16 to 18 mass %. The test alloys were produced by adding nitrided ferroalloys during melting in an induction furnace. Test specimens of each alloy were prepared for mechanical testing and microstructural observation. Tensile str...

By Jasmin Halilović, Edis Nasić, Derviš Mujagić

Steel 17-7PH is austenitic-martensitic steel with high strength, hardness, and resistance to creep, and corrosion. It is designed for aerospace components, but can also be used for other applications that require high strength and corrosion resistance, as well as leaf springs for operation at temperatures up to 316 °C. It can be used in a solut...

By Belma Fakić, Derviš Mujagić, Omer Beganović