Рад у часопису

објављена верзија

енглески

Nenad Marić, Jana Štrbački, Sanja Mrazovac Kurilić, Vladimir P Beškoski, Zoran Nikić, Snežana Ignjatović, Jovana Malbašić

Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)

Environmental Geochemistry and Health

Springer Netherlands

2020

Aquifer contamination by petroleum hydrocarbons leads to measurable changes of groundwater hydrochemistry, primarily due to the microbiological activity. This study analyzes this phenomenon at an historical kerosene-contaminated site in Vitanovac (central Serbia). Due to the long-term hydrocarbon contamination and exposure to aerobic and anaerobic biodegradation mechanisms, the lowest concentrations of O2, NO3−, and SO42− (electron acceptors) and the highest concentrations of Mn and Fe (products of microbial metabolic activity) overlap. The terminal redox-accepting processes in groundwater ranged from oxygen reduction to sulfate reduction. The most anoxic processes were registered in piezometers closest to the source of contamination, as was also confirmed by the redox potential (Eh) measurements. High electrical conductivity values and the highest TOC, SiO2, and Al concentrations also overlap in the contaminated zone close to the source of contamination. Scanning electron microscopy study of quartz grains from the zone undergoing the impact of biodegradation confirmed the occurrence of weathering microscale processes on mineral surfaces. Taking all these factors together, it seems reasonable to assume that microbiological activity has caused the enhanced weathering of silicate minerals.

42

7

1921

1935

https://doi.org/10.1007/s10653-019-00462-9

0269-4042 (Print) 1573-2983 (Online)

podzemne vode, hidrohemija, zagađenje, naftni ugljovodonici, biodegradacija

groundwater, hydrochemistry, contamination, petroleum hydrocarbons, biodegradation

M20

М21

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