Enhanced Biodegradation of Used Engine Oil in Soil Amended with Organic Wastes

Abstract

Three organic wastes (banana skin (BS), brewery spent grain (BSG), and spent mushroom compost (SMC)) were used for bioremediation of soil spiked with used engine oil to determine the potential of these organic wastes in enhancing biodegradation of used oil in soil. The rates of biodegradation of the oil were studied for a period of 84 days under laboratory conditions. Hydrocarbon-utilizing bacterial counts were high in all the organic waste-amended soil ranging between 10.2×10 6 and 80.5×10 6 CFU/g compared to unamended control soil throughout the 84 days of study. Oil-contaminated soil amended with BSG showed the highest reduction in total petroleum hydrocarbon with net loss of 26.76% in 84 days compared to other treatments. First-order kinetic model revealed that BSG was the best of the three organic wastes used with biodegradation rate constant of 0.3163 day −1 and half-life of 2.19 days. The results obtained demonstrated the potential of organic wastes for oil bioremediation in the order BSG>BS>SMC.

Biological Remediation of Hydrocarbon and Heavy Metals Contaminated Soil

“…Organic wastes like banana skin, spent mushroom compost and brewery spent grain in earlier studies were found to enhance the biodegradation of used lubricating oil up to 90% loss of oil within the period of 3 months (Abioye, et al, 2009b(Abioye, et al, , 2010. Also the results of our studies revealed the potential of melon shell to stimulate 75% crude oil degradation in soil contaminated with crude oil within the period of 28 days (Abioye, et al, 2009a). Depending on the nature of the contaminated soil, some of these nutrients could become limiting, hence the additions of nutrients are necessary to enhance the biodegradation of oil pollutants (Choi et al, 2002;Kim et al, 2005).…”

Biodegradation of Diesel Oil in Soil and Its Enhancement by Application of Bioventing and Amendment With Brewery Waste Effluents as Biostimulation-Bioaugmentation Agents

“…1 , Ganiyu K. Latinwo 1 soil remediation includes mechanical, burying, evaporation, dispersion, and washing. However, these technologies are expensive and can lead to incomplete decomposition of contaminants [Das and Chandra, 2011].…”

The Oxidative Stress Response of Mirabilis jalapa to Exhausted Engine Oil (EEO) during Phytoremediation

“…Moreover, as plants reside at the lower ranks in the food chain, their bioaccumulation can lead to severe toxicity in tertiary consumers, including humans [8][9]. Therefore, once entered in the human bodies through the food chain, many of these compounds can result in renal disorders, liver diseases, and alteration in DNA [1,10]. Besides, the presence of EEO in soil can also disturb soil ecology, soil fertility, and alteration of soil structure leading to crop contamination [11].…”