Enhanced rehabilitation of tropical aquatic environments polluted with crude petroleum using Candida utilis.

摘要

The recovery of tropical creek Water Compartments along River Escravos in Delta State of Nigeria, grossly polluted with crude petroleum was monitored for a period of 72 weeks upon inoculation with c. utilize , a hydrocarbon utilizer, developed in cane molasses fortified with 15/100 v/v crude petroleum. In the Compartment A, which received the additional yeast culture, both dissolved oxygen (DO) and residual oil concentration (ROC) decreased rapidly over the period; also ROC gave a high but negative correlation coefficient (r=-0.96) with total hydrocarbon utilizers when compared with the results obtained for a similar Compartment B(r=-0.12) not inoculated serving as a surrogate of control under field conditions.