Biodegradation of Indeno (1, 2, 3 - c, d) Pyrene and Dibenzo (A, H) Perylene by Aerobic Heterotrophic Bacteria and Cyanobacteria in Brackish Water
Ichor, Tersagh *
Department of Biological Sciences, University of Agriculture, Makurdi, Nigeria
E. M. Aondoakaa
Department of Biological Sciences, University of Agriculture, Makurdi, Nigeria
Ande, Sesugh
Department of Chemistry, University of Agriculture, Makurdi, Nigeria
*Author to whom correspondence should be addressed.
Abstract
Biodegradation of indeno (1, 2, 3- c, d) pyrene and dibenzo (a, h) perylene; high molecular weight PAHs by isolates of aerobic heterotrophic bacteria, cyanobacteria and its consortium from Boodo Creek characterized with brackish water was monitored for 56 days using GC- MS. The initial concentration of indeno (1, 2, 3- c, d) pyrene in treatment with aerobic heterotrophic bacteria (AHB) was 0.09 mg/l, cyanobacteria (CB) was 0.08 mg/l; AHB+CB was 0.3 mg/l and the control, C was 0.12. Dibenzo (a, h) perylene had AHB 0.10 mg/l; CB 0.07 mg/l; AHB + CB 0.21 mg/l and C 0.23 mg/l. The quantity of the PAH’s monitored reduced to 0 on day 56 in all the treatment options though fluctuation in the quantity of the HMW PAH’s was observed throughout the period monitored for biodegradation. Biodegradation of indeno (1, 2, 3- c, d) pyrene and dibenzo (a, h) perylene did not vary with time (p > 0.05).
Keywords: Biodegradation, cyanobacteria, Bodo Creek, bacteria