Biodegradation of Phenanthrene by a Consortium of Aerobic Heterotrophic Bacteria and Cyanobacteria in Petroleum Hydrocarbon Polluted Brackish Water of Bodo Creek

摘要

Biodegradation of phenanthrene by a consortium of aerobic heterotrophic bacteria and cyanobacteria isolated from hydrocarbon polluted brackish water of Bodo creek was monitored using GC-MS for 56 days. The initial quantity of phenanthrene in the treatment options monitored on day 0 was 2.8, 1.95, 3.17 and 2.76 mg L^?1 for (A) Aerobic heterotrophic bacteria, (B) Cyanobacteria, (AB) aerobic heterotrophic bacteria+cyanobacteria and (C) Control, respectively on day 56. Mineralization of phenanthrene progressed to 0.1, 0.0, 0.01 and 0.0 mg L^?1 for the treatments of A, B, A+B and C, respectively. The quantity of phenanthrene in all the treatments fluctuated throughout the period monitored hence its biodegradation did not vary significantly with time, t(4) = 1.76 (p>0.05).