NYOLO LONEMA Jean-Marie1, KOY KASONGO Ruben 2*, MAWA TUZINGILA Romulus3, BIEY MAKALY Emmanuel1

Bioremediation of Tank Bottom Sludge from Petroleum Refinery.

Arenosols cover extensive areas of oil exploitation in the coastal basin of the Democratic Republic of Congo (DRC). These soils are thus subject to continous pollution by oil waste products. An experiment in station and in vitro was carried out to study the possibility of depollution of polluted sites in the Moanda region (PERENCO-SOCIR) by bio-and phytoeremediation. Hence, a combination of micro-organisms from polluted sites was used to degrade ex-situ, the ex-reservoir sludges taking into account the optimal conditions of their life in the soil which serves as diluent. The first order kinetic constant was calculated and an interesting value of 0.034/day for a substrate/microorganism ratio of 5.0 in bioreactors was found. Bacteria Bacillus cereus, Enterobacter cloacae, Escherichia coli, Pseudomonas putida as well as fungi Trichophyton sp. and Fusarium solani were effective in large concentrations of hydrocarbons in the soil. Leguminous plants (Acacia auriculiformis) have been shown to be of confirmed interest in both bioaugmentation and phytodegradation of pollutants. Télécharger l'article