DEVELOPMENT OF WASTE BASED BIOSTIMULANT FOR THE REMEDIATION OF CRUDE OIL CONTAMINATED SOIL


DEVELOPMENT OF WASTE-BASED BIOSTIMULANT FOR THE REMEDIATION OF CRUDE OIL CONTAMINATED SOIL 

ABSTRACT

In this research work, the development of a waste based Biostimulant in the remediation of Crude-oil contaminated soil was investigated. Biostimulants used was plant waste (Plantain Peel) at a constant proportion of crude oil contamination and treated with varying concentration of biostimulant (10%w/w, 15%w/w, 20%w/w, 25%w/w, 30%w/w). Microsoft Excel tool and Design Expert statistical software were used in the kinetic study and optimization of the process. The treatment period was done in 28days days. At the end of the study, in the sample treated with 100g PP the TPH was found to reduce from 28346 to 17498(mg/Kg) with %D equal to 39.2%, in 150, 200, 250 and 300(g) PP treament, TPH reduce from 28344 to 16595, 28343 to 15251, 28340 to 13883 and 28338 to 12255(mg/Kg) with corresponding %D of 42.07, 46.47, 50.74% and 55.98(%) respectively.  The optimization results shows that the optimum TPH and HUB value was 14190.9mg/Kg and 2.34162cfu/g at mass A=282.312g, time B= 3.38379wks and temperature C= 21.3207oC with desirability of 1. Which showed that the predicted model actually fits the experimental data. The results so obtained shows that agro waste based technology using plantain peel is a cheap and effective means of bioremediation of crude oil contaminated sites.

 

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