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
LANDSLIDES ON THE ROADS OF THE NORTHERN PART OF THE REPUBLIC OF SRPSKA AS A RESULT OF ELEMENTAL OR ANTHROPOGENIC PROCESSES
The Republic of Srpska, which is an integral part of Bosnia and Herzegovina, was affected by intense precipitation during May 2014 and May 2015. The northern part of the Republic of Srpska is located between the plain area of the Sava River and the mountain massif of the inner Dinarides, while the eastern and western parts are confined to the river...
By Neđo Đurić, Dijana Đurić
ELIMINATION OF TOXIC ELEMENTS BY NATURAL AND SYNTHETIC ADSORBENTS
The adsorption of Zn(II) and Cu(II) onto siderite (S) and kaolin (K) and adsorption of As(V) onto bentonite (B) was studied. The chemical modification – precipitation of MnO2 on the kaolin (KM) and siderite (SM) surface was used to improve the adsorption properties of natural materials for their application in columns. In the batch tests the higher...
By Zuzana Danková, Alexandra Bekényiová, Zuzana Mitróová, Danka Gešperová
ANALYSIS OF TIME OSCILLATIONS OF WATER ON LAKE MODRIC AS A MULTI-PURPOSE RESERVOIR
The major task of multi-purpose reservoir „Modrac“ operation is to decide how much water should be released now and how much should be retained for future use given some available and/or forecasted information at the beginning of the current time period. In practice, reservoir operators usually follow rule curves, which stipulate the actions that s...
By Nedim Suljić, Omer Kovčić
HUMIC ACIDS OPTICAL PROPERTIES OF RENDZINA SOILS IN DIVERSE ENVIRONMENTAL CONDITIONS OF SERBIA
This study examined the impact of climate, altitude and landforms on humic acids (HA) optical properties (E4/E6, ∆logK, RF indexes) in Serbian Rendzina soils. HA humification degree of calcareous and decarbonated Rendzinas under natural vegetation (forest and grassland, separately) decreased with altitude increasing. This particular rule was not ma...
By Svjetlana Radmanović, Nataša Nikolić, Aleksandar Đorđević
INFLUENCE OF ENVIRONMENTAL CONDITIONS ON CARBON AND NITROGEN CONTENT IN SERBIAN RENDZINA SOILS
Organic matter in Serbian Rendzina soils dependence on altitude and geographic regions was investigated. There was no regular dynamics of carbon and nitrogen content nor in C/N ratio, probably because of slight climatic variation among altitudes and regions, thus negligible differences in vegetation, organic litter and decomposition dynamics. Predi...
By Svjetlana Radmanović (Cupać), Aleksandar Đorđević, Nataša Nikolić
pH OF PRECIPITATION IN THE AREA OF THE TOWN OF BIJELJINA
Presence of certain polluting substances in the atmosphere causes disturbance of natural pH values that leads to acidic precipitation occurrence. Measurement of pH of precipitation in the area of the town of Bijeljina has been done since 2008 and the sampling has been performed at three points. This paper presents measurement results of surveys for...
By Mira Vidaković, Neđo Đurić, Petar Savković, Radenko Babić