The Efficacy of Bioaugmentation on Remediating Oil Contaminated Sandy Beach Using Mesocosm Approach
Abstract: Bioremediation is
basically consists of two approaches, biostimulation and bioaugmentation. The
efficacy of bioaugmentation for combating oil pollution in field application is
still argued. The purpose of study was to evaluate the efficacy of
bioaugmentation and to compare the affectivity of single strain and consortium
application in remediating oil polluted sandy beach. Experimental study in a
field has been conducted with two (2) treatments and one (1) control in three
different plots. The treatmens were introduction of a single strain
(Alcanivorax sp TE-9) and a consortium (Alcanivorax sp. TE-9, Pseudomonas
balearica st 101 and RCO/B/08-015) cultures into oil contaminated sediment. The
experiment in mesocosm approach was taken place in Cilacap coast. Arabian light
crude oil was used in the concentration of 100.000 mg.kg-1 sediment. Changes of
oil concentration, bacterial density and pore water quality have been monitored
periodically for 3 months. The result showed that oil degradation percentage
and bacterial growth in both treatments were higher than in control. After 3
months, the percentage of oil degradation experiment in control, single strain
and formulated consortium treatments were observed at 60.4%, 74.5% and 73.5%.
It proves that bioaugmentation tehnique can enhance significantly oil
biodegradation in sandy beach. The applications of bacteria in single or
consortium culture give no different impact on their affectivity for
bioremediation in Cilacap sandy beach. By data extrapolation it can be
predicted that both of treatments able to reduce remediation time from 210 days
into 135–137 days. Bioaugmentation can be proposed as a good solution for
finalizing oil removing in Cilacap sandy beach when oil spilled occurred in
this environment.
Author: Yeti Darmayati,
Harpasis S. Sanusi, Tri Prartono, Dwi Andreas Santosa, Ruyitno Ruyitno
Journal Code: jpperikanangg150015
