Kinetics study of biologically remediated crude oil polluted soil using a bacteria and fungi
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The effectiveness of remediating soils polluted with crude and treated hydrocarbon oil
using a fungi - Aspergillus niger, bacteria - Pseudomonas aeruginosa and the combination of the
two were investigated and the first order kinetics were studied. Eight systems of 500g soil sample
were polluted with both raw and treated crude oil. Four systems were polluted with 100 ml treated
crude oil while other remaining systems with same quantity of raw crude oil. Two systems with
raw and treated crude oil were left as control (RCC and TCC). Samples of soil polluted with raw
crude oil were amended with A. niger (RCA) and P. aeruginosa (RCP) respectively, while treated
crude samples were also treated with same (TCA) and (TCP) only. The last two systems were
treated with both P. aeruginosa and A. niger (RCAP and TCAP). First order bioremediation
kinetics and biostimulant efficiency for these systems were studied by monitoring Total Petroleum
Hydrocarbon (TPH). The result obtained at the end of the bioremediation period, revealed that
treated crude oil polluted soil remediate faster and better than raw crude oil polluted soil. The
highest level of bioremediation occurred in systems amended with both A. niger and P. aeruginosa
which had about 98 % TPH decrease
Keywords
TP Chemical technology