A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In situ bioremediation of hydrocarbon in soil
Laboratory and field experiments were carried out for bioremediation of soils contaminated by fuel oil and motor oil. Bioventing was combined with the application of selected bacteria and dissolved nutrients. In the field experiments, soil gas was evacuated by air pumps from the permeable boreholes. The process was followed by both soil and gas analysis. Biodegradation of oil contamination and the microbial activity was measured by the oil and cell concentration in the soil. In 2 months, the oil content decreased considerably, and the cell number increased by one order of magnitude or more. The evacuated gas was tested for CO2, O2 and volatilized hydrocarbon content. The CO2 level proves the presence of biodegradation: a permanent high value about ten times higher than normal, could be measured for 2 months, followed by a slow decrease in the third month. Volatilized hydrocarbon content was the highest in the first 2 d. After a continuous decrease, it dropped under the threshold of measurability for the third month. Selective biodegradation of hydrocarbon mixtures (oily wastes) was investigated as well: gas Chromatographic oil analysis showed the changes in the oil composition. The appropriate microflora was working in an ideal commensalism, and as a result, all of the hydrocarbon components were degraded nearly to the same extent.
In situ bioremediation of hydrocarbon in soil
Laboratory and field experiments were carried out for bioremediation of soils contaminated by fuel oil and motor oil. Bioventing was combined with the application of selected bacteria and dissolved nutrients. In the field experiments, soil gas was evacuated by air pumps from the permeable boreholes. The process was followed by both soil and gas analysis. Biodegradation of oil contamination and the microbial activity was measured by the oil and cell concentration in the soil. In 2 months, the oil content decreased considerably, and the cell number increased by one order of magnitude or more. The evacuated gas was tested for CO2, O2 and volatilized hydrocarbon content. The CO2 level proves the presence of biodegradation: a permanent high value about ten times higher than normal, could be measured for 2 months, followed by a slow decrease in the third month. Volatilized hydrocarbon content was the highest in the first 2 d. After a continuous decrease, it dropped under the threshold of measurability for the third month. Selective biodegradation of hydrocarbon mixtures (oily wastes) was investigated as well: gas Chromatographic oil analysis showed the changes in the oil composition. The appropriate microflora was working in an ideal commensalism, and as a result, all of the hydrocarbon components were degraded nearly to the same extent.
In situ bioremediation of hydrocarbon in soil
Gruiz, Katalin (author) / Kriston, Eva (author)
Journal of Soil Contamination ; 4 ; 163-173
1995-04-01
11 pages
Article (Journal)
Electronic Resource
Unknown
Bioremediation of petroleum hydrocarbon-contaminated soil by composting in biopiles
| Online Contents | 2000
Bioremediation of hydrocarbon contaminated gasoline station soil by a bacterial consortium
| British Library Conference Proceedings | 2004
Volatile Hydrocarbon Emissions from a Diesel Fuel-Contaminated Soil Bioremediation Facility
| Taylor & Francis Verlag | 2002
In Situ Recycling Of Contaminated Soil Uses Bioremediation Approach
Online Contents | 1996
Case Study: Bioremediation of Petroleum Hydrocarbon-Contaminated Soil under a Residential Building
| British Library Online Contents | 2011