Biodegradation Potential of Some Bacteria and Fungi Isolates from Septic Tank Sewage in Some Related Sites in Delta and Edo States of Nigeria ()
ABSTRACT
The biodegradation potentials of some selected
bacteria isolated from septic tank sewage in the region under study were examined. Three replicate samples from
Locations A, B and C representing Agbor, Benin and Sapele regions of Delta and
Edo States, Nigeria respectively were collected from the influent tank (raw
sewage) between November 2018 and January 2019 for testing. The sewage in 10 ml
septic tubes for both experimental and control samples was subjected to shake
flask biodegradation analysis using the isolates with the highest screen test
result. A total of 18 bio-treatment options were available in this study. In
the shake flask biodegradation of sewage using isolates, total organic carbon (TOC)
values from day 0 to 25 in all isolates were lower compared with the control
experiments. TOC values at day 25 were lowest (0.10 mg/L) in the treatment containing Bacillus sp. + Klebsiella sp. as compared to the TOC
value (2.01 mg/L) of the treatment which had Aeromonas sp. + Bacillus sp. + Klebsiella sp. pH, EC, COD, TDS, DO and BOD were also monitored for a period of 3 weeks. In all treatment options, there
was a rapid increase in the BOD for the experimental set up around day 10 - 20
which ranged between 74.82 - 187.54 mg/L. The overall physical observation (odour, consistency and colour) of the
experimental and the control septic tubes showed very high remarkable
reductions in the experimental set-up when compared with the observation made
for the control samples.
Share and Cite:
Oyem, I. , Oyem, H. and Atuanya, E. (2020) Biodegradation Potential of Some Bacteria and Fungi Isolates from Septic Tank Sewage in Some Related Sites in Delta and Edo States of Nigeria.
Journal of Geoscience and Environment Protection,
8, 82-93. doi:
10.4236/gep.2020.89005.
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