Bioremediation of petroleum contaminated soils
1998
Dumitru, M. | Toti, M. | Constantin, Carolina | Voiculescu, Anca | Capitanu, V. | Popa, Daniela (Institutul de Cercetari pentru Pedologie si Agrochimie, Bucuresti (Romania)) | Ceausu, C. | Pirvulescu, Elena(Statiunea de Cercetari pentru Cereale si Plante Industriale "Albota", Arges (Romania))
Approximately 50.000 ha agricultural and forest lands are polluted by petrol hydrocarbons or by petrol hydrocarbons and brine, within the areas of petroleum extraction, transportation and processing. The research carried out within two field experiments - one accidentally polluted and the other having a controlled pollution level - led to the following conclusions: pollution with 0.5 per cent petroleum decreased the maize yield with 36 per cent, while pollution with 1 per cent petroleum reduced the maize yield with 57 per cent; high rates of organic (200 t/ha) and inorganic (N300) fertilisers produced high yield increases (371 per cent) under the conditions of soil deep loosening; scarification and fertilisation (organic and inorganic) determined a significant increase of the microbial activity, revealed by the increase of dehydrogenase activity, number of bacteria and fungi, and number of species, which caused a very significant decrease of the petroleum pollution degree; diversity of the bacterial population increased in time and was higher in the treatments receiving manure, for instance, Arthrobacter species was prevailing in this case.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por National Research and Development Institute for Soil Science, Agrochemistry and Environment Protection