Naslov (eng)

Delineation of the Main Conditions Affecting Nitrogen Form in Selected Anoxic Alluvial Aquifers in Serbia

Autor

Perović, Marija
Obradović, Vesna
Mitrinović, David
Vučković, Tanja
Nenin, Tanja

Publisher

Opis (eng)

Nitrogen complex chemistry is reflected in several oxidation states (from -3 to +5) in which nitrogen can persist depending on prevailing environmental biogeochemical conditions. The oxidation state of the elements in groundwater will preferably be determined by dissolved oxygen concentration and redox potential, followed by concentration and availability of present organic matter, nitrates, fero/manganese and sulfate ions, and dominant species of microorganisms. The aim of the paper is distinguishing which parameters are the main controllers of dominant reactions and final form of nitrogen present in anoxic alluvial aquifers, regardless of nitrogen origin. Research was conducted for selected drainage wells from Knicanin - Centa (Danube and Tisa river), Kovin - Dubovac (Danube river) and selected wells from Belgrade groundwater source (Sava River). Parameters such as Eh, O2, TOC, Fe2+ , H2S concentrations and BART test results were all analyzed. The obtained results were used to define prevailing nitrogen form and dominant nitrogen transformation reactions, indicating different anoxic aquifers potential for nitrogen loss (N2, N2O) or conservation (NH4+).The conclusion is that in anoxic alluvial groundwaters which were the subject of this research prevailing controlling factors are the concentration of total organic carbon (TOC), followed by presence of ferrous iron and sulfide, while C:N ratio would determine whether the nitrogen is subject of loss (N2O, N2) or conservation (NH4+).

Jezik

engleski

Datum

2016

Licenca

© All rights reserved

Predmet

nitrogen transformation, anoxic groundwater, BART test

Deo kolekcije (1)

o:243

Institut za vodoprivredu "Jaroslav Černi"