Mariana Marinescu, M. Toti, Eugenia Gament, M. Marinescu
Romania still depends largely on crude oil for income earnings. Crude oil spillage is also a very common problem in the country. There is therefore a need for continuous research on the problems associated with pollution resulting from spillage and its effects on the soil environment which has a negative impact on crop growth on it. There are a variety of pollutants affecting soil and subsoil, such as fuel and oil products, hydrocarbon residues, crude oil, other products resulting from the operation (saturated and unsaturated aliphatic hydrocarbons, and the monocyclic and polycyclic aromatic). These types of products (mainly hydrocarbons) have a harmful risk, affecting the quality of groundwater, which becomes unfit for use for a long time (drinking water, irrigation and different industrial uses). It also poses risks to human health, biological environment and vegetation, aromatic compounds having a strong feature of mutagenic and carcinogenic and, not least, affect the environment security, presenting risks of explosion and fire, when the floating oil reach the groundwater in the basement of various buildings. The case study was achieved at Perisoru, Braila county, in an area polluted by crude oil criminal drilling in a transport pipeline. This paper includes: presentation of the area, the main morphological features, physical, agrochemical and microbiological characteristics of soil samples collected from polluted area and the soil profile of the maximum pollution compared with those of uncontaminated soil in the vicinity of the polluted area, the dynamics of pollutant migration depth of soil profile horizons depending on the sequence and genetic characteristics and the degree of pollutant loading. The paper presents the results obtained for petroleum fractions in soil samples polluted with crude oil. The conclusion of the case study investigated in the crude oil polluted area was that the physico-chemical and biological characteristics make chernozem a good environment for biodegradation process, if they occur in order to optimize the factors that control the bioremediation process. Without the application of pedo-ameliorative measures to stimulate biodegradation and specific return as state of land before the pollution occurrence, would occur very slowly, self-cleaning process requiring unacceptable periods of time.
crude oil, case study, Braila county, petroleum fractions, polluted soil.
Presentation: oral