Biodegradation of PAHs, PCBs and PHC in sediments from Černý Příkop (Czech Republic)

Abstract

The thesis deals with the issue of biodegradation of polycyclic aromatic hydrocarbons, polychlorinated biphenyls and petroleum hydrocarbons in the sediments sample from Černý příkop. The sediments of Černý příkop constitute an important environmental load for the territory of Ostrava City. The sediment differs from ordinary soil matters by its high content of natural organic substances; the TOC content is 37 %, to which the PAHs and PCBs primarily adsorb. Standard species of pure bacterial cultures of Pseudomonas putida and Rhodococcus sp. were used for the biodegradation. Regardless of the high efficiency of degradation of the monitored pollutants, the limit values, specified by the decree no. 294/2005 Coll. on conditions of storage of waste on dumps and its use on terrain surface, were not achieved. The conclusions and possible proposals of measures were elaborated as a basis for further long-term monitoring.