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

Water pollution by organic matters are in increase. Photocatalytic degradation of various pollutants presented in environment has promising future. Different materials have been applied in previous scientific works, while TiO2 based materials posse’s great physico-chemical characteristics. Therefore, researchers are constantly developing vari...

By Aleksandar Jovanović, Miroslav Sokić, Milica Mišić, Marija Simić, Mladen Bugarčić

  One of the new methods of anchoring steel structures is the use of large-scale buckling-restrained braces (BRBs) on the lateral system of this type of structures. This study investigates the behavior of BRBs and compares them with buckling braces. In this study, a two-dimensional frame with four stories and four spans was taken and analyzed...

By MOHAMMADAMIN ABDOLLAHZADEH, SHIMA SHAMEKHI

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

Specific environmental conditions, such as marine environments, often influence steel applications in marine industries. These conditions are commonly simulated using a NaCl solution in order to simplify the study and eliminate the complexities of seawater's chemical and biological variability. In this study, 42CrMo4 steel samples, a widely utilize...

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

The Cu-Al-Zn alloy is used as a functional material in industry, and also as a biomaterial. These alloys have excellent electrical properties, good thermal conductivity, and can also be used for biomedical purposes.The basic characteristic of alloys that remember their shape is their independent return to some of their remembered shape when the tem...

By Safija Herenda, Merima Begović, Edhem Hasković, Vanja Asanović

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

Formability is the ability of a material to deform without fracturing, and the assessment of this property depends on various factors such as temperature, deformation speed, and stress state. There are two main approaches to determining formability: one is based on testing different materials under controlled stress conditions, and the other on dev...

By Ibrahim Plančić, Amina Ćurić, Amila Brkić-Omić