Prirodno prečišćavanje i stimulisana bioremedijacija podzemnih voda zagađenih naftnim ugljovodonicima
Natural attenuation and enhanced bioremediation of groundwater contaminated by petroleum hydrocarbons
Author
Marić, Nenad M.Mentor
Papić, PetarCommittee members
Beškoški, VladimirPušić, Milenko
Matić, Ivan
Metadata
Show full item recordAbstract
Disertacija se konceptualno sastoji iz dva dela kojima je obuhvaćen pasivan (prirodno
prečišćavanje) i aktivan remedijacioni pristup (stimulisana bioremedijacija) kod
podzemnih voda zagađenih naftnim ugljovodonicima.
U prvom delu disertacije prikazani su rezultati osmatranja procesa prirodnog
prečišćavanja u podzemnim vodama na lokaciji istorijskog zagađenja kerozinom.
Tragovi zagađenja naftnim ugljovodonicima pronađeni su 20 godina nakon prosipanja
kerozina. Ovo je stvorilo osnovu za proučavanje efekata dugotrajne izloženosti
podzemnih voda procesima biodegradacije u terenskim uslovima. Uočeno je da se
snižene koncentracije elektron akceptora (O2, NO3
-, SO4
2-) i povišene koncentracije
metaboličkih produkata biodegradacije (Mn, Fe) poklapaju sa najvišim vrednostima
parametara organskog zagađenja u podzemnim vodama (Total Organic Carbon - TOC,
Total Petroleum Hydrocarbons - TPH). Utvrđen je uticaj aerobne respiracije, redukcije
nitrata, redukcije mangana (IV), redukcije gvožđa (III) i... redukcije sulfata na hemijski
sastav podzemnih voda. Uticaj metanogeneze je utvrđen na osnovu promena u
izotopskom sastavu podzemnih voda, koncentracije δ13CDIC su za oko 12 ‰ više u zoni
pod uticajem biodegradacije u odnosu na ostatak područja istraživanja.
Registrovano zagađenje podzemnih voda ne potiče od aromatičnih jedinjenja (benzena,
toluena, etilbenzena, ksilena - BTEX i stirena), već od zasićenih ugljovodonika.
Redukcija sulfata kao pojedinačni mehanizam poseduje najveći pojedinačni kapacitet za
biodegradaciju komponenti BTEX.
Najvišim koncentracijama TOC odgovaraju višestruko povišene koncentracije Al i SiO2
u zoni povišene kiselosti pod uticajem biodegradacije naftnih ugljovodonika.
Pretpostavljeno je da je dugotrajna izloženost intenzivnim procesima biodegradacije
ubrzala rastvaranje silikatnih minerala u vodonosnoj sredini...
This dissertation consists of two parts, a passive (natural attenuation) and an active
remediation approach (enhanced bioremediation) for groundwater contaminated by
petroleum hydrocarbons.
In the first part of this dissertation, results of the monitoring of natural attenuation
processes at a site of historical contamination by kerosene are presented. Traces of
petroleum hydrocarbon contamination were found 20 years after the kerosene spill. This
provided a basis for the monitoring of long term groundwater exposure to
biodegradation processes in field conditions. It was observed that decreased electron
acceptor concentrations (O2, NO3
-, SO4
2-) and increased concentrations of metabolic
biodegradation products (Mn, Fe) corresponded to the highest values of the organic
contamination parameters (Total Organic Carbon - TOC, Total Petroleum Hydrocarbons
- TPH) in groundwater. The impact of aerobic respiration, nitrate reduction, reduction of
manganese (IV), reduction of iron (III) and sulp...hate reduction on the chemical
composition of groundwater was determined. Methanogenesis impact was determined
on the basis of the changes in groundwater isotopic composition. δ13CDIC values were 12
‰ higher in the biodegradation affected zone in comparison to the rest of the study area.
The observed contamination of groundwater did not originate from aromatics (benzene,
ethylbenzene, xylene, toluene - BTEX and styrene), but from saturated hydrocarbons.
Sulfate reduction had the largest single capacity for the biodegradation of BTEX
compounds.
The highest TOC concentrations corresponded to several times increased concentrations
of Al and SiO2 in the zone of elevated acidity affected by biodegradation of petroleum
hydrocarbons. It was assumed that long-term exposure to intense biodegradation
processes has enhanced the dissolution of silicate minerals from the aquifer...;
Faculty:
Универзитет у Београду, Рударско-геолошки факултетDate:
26-09-2016Projects:
- Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43004)