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This paper presents an analysis of water flow and flow velocity in an open channel of rectangular cross section as a function of channel roughness, ie Manning roughness coefficient. Three different cases of finishing the open channel of rectangular cross-section were analyzed, namely the concrete channel, the channel with smoothed cement mortar and...

By Nedim Suljić

May 2021 Original scientific article Chemical Tehnology
CHEMICAL LEACHING OF CONTAMINATED SOIL – CASE STUDY

This study presents results of chemical leaching of contaminated soil from several metallurgically loaded locality of Richnava in Slovakia, applying two chelants – Na2EDTA and Na3EDDS of different molar concentration, done at different leaching conditions. The lower molar concentration (2 mM) of chelants showed comparable effect on Mn, Ni, As...

By Zuzana Danková, Iveta Štyriaková, Ľubica Kovaničová, Katarína Čechovská, Marián Košuth, Jaroslav Šuba, Jarmila Nováková, Patrik Konečný, Ľubomír Tuček, Katarína Žecová, Eva Lenhardtová, Zoltán Németh

Chromium, ammonium, and potassium compounds are pollutants in the environment released mainly by industrial wastewater and they can negatively influence the quality of surface water. Zeolites and bentonites are commonly used adsorbents for removal of pollutant from water. In the study, the adsorbents were used in their natural form, without chemica...

By Tomáš Bakalár

The paper presents results of detailed geological research of quartzite in the wider area of Smrčevice, southeastern of Gornji Vakuf-Uskoplje. Based on the defined boundaries of surface distribution and research results, geological reserves of about 12 million tons have been determined in the wider area of Smrcevica. The quartzite reserves that hav...

By Dževad Forčaković, Rejhana Dervišević

Natural disasters during May 2014 caused a flood of water outside the unregulated bed of the river Tinja in the local area of Gornji Hrgovi. The flood effect affected the undermining and destruction of the foot part of the slope, reactivation and regressive development of the landslide, which was manifested by further secondary “breaking&rdqu...

By Jasenko Čomić, Aida Hrustić

The mineral resources of the Republic of Srpska enable the exploitation and processing of mineral raw materials in the metal, metal processing, construction, chemical industry, cement industry, ceramics and construction materials, etc. The largest part (over 90% in terms of value) are reproductive materials for processing in other industries and a ...

By Vladimir Malbašić

In the present paper, the authors develop a methodology for stability monitoring of the hydrotechnical-defensive embankment that is exposed to heavy frequent traffic. The proposed methodology envisages several phases of observation, work and monitoring: (1) macroscopic observations, (2) geophysical-geoelectric tests, (3) group of exploration works,...

By Srđan Kostić, Nebojša Nikolić, Vladimir Malbašić

In many projects, piles are designed and installed as the ultimate solution in foundation construction, load transition to the resistant subsurface layers, providing lateral resistance, and overcoming the poor performance of surface soils. Pile design should be done with respect to structural consideration, the load-carrying capacity of the surface...

By Karamjavan Abbas Firouzi, Hojjat Hashempour

When building new roads in BiH, reconstruction or rehabilitation of existing roads, construction or replacement of asphalt layers is a mandatory part of construction works. The lifespan of the entire pavement structure depends on the quality of the final asphalt layers of the pavement structure. One of the most significant characteristics of the as...

By Zahid Bašić, Amir Džananović, Elmedin Tabaković

The efficiency of wastewater treatment is not only measured by the quality of treated wastewater, but also by the efficiency of treatment and permanent disposal of sludge that is separated. In addition to harmless, the sludge also contains hazardous substances that are released from wastewater during treatment. This work aims to obtain a neutral an...

By Zoranka Malešević, Milica Đeković-Šević, Mirjana Jovović