Comprehensive Biogeochemical Analysis of Nitrogen Transformation Parameters

Autor: Boris Obrovski, V. Obradović, Vesna Zuber-Radenković, Mirjana Vojinovic-Miloradov, Marija Perović, Milan Dimkić
Rok vydání: 2020
Předmět:
Zdroj: Water Resources. 47:156-170
ISSN: 1608-344X
0097-8078
DOI: 10.1134/s0097807820010121
Popis: The potential for nitrogen attenuation in anoxic groundwater by examining the concentration and distribution patterns of electron acceptors, electron donors and microbiological parameters was assessed. Research was carried out for 25 monitoring bores in two anoxic alluvial aquifers Kovin-Dubovac and Knicanin-Centa during the four years monitoring period (2010–2013). Nitrate and nitrite concentrations were mostly undetectable while ammonium, ferrous and total organic carbon concentrations were increased with sporadic sulfide appearance. Piper diagrams qualified these groundwaters as predominantly Ca2+(Mg2+)–$${\text{HCO}}_{3}^{ - }$$ type. By Alekin classification waters belong to $${\text{C}}_{{\text{I}}}^{{{\text{Ca}}}}$$ type. The multiple electron donors (organic carbon, iron minerals and sulfide) and spatial and temporal variability of alternative electron acceptors proved to be determining factors of dominant nitrogen reduction path way. Concentrations trends of chemical and microbiological parameters revealed the conditions suitable for nitrogen conservation and they are presented via developed maps and BART test results. Statistical analysis was evaluated by Principal Component Analysis and Cluster Dendograms.
Databáze: OpenAIRE
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