Crude oil spills have wreaked havoc on the ecosystem across the world due to oil extraction activities, equipment failure, and infrastructure vandalism. The cleanup of contaminated places is a pressing environmental issue that must be addressed. The ability of a combination of pig droppings and pig bone char (biostimulant) to promote and optimise crude oil biodegradation in soil was studied in this study. 500g of loamy soil was spiked with crude oil at a concentration of 3% (w/w). The spiked soil was amended with varied percentages of biostimulant mixes and labelled A – E. The Control was spiking soil with no biostimulant added. Each experiment was set up in six (6) repetitions, ran for six weeks, and was sampled and analysed destructively every week. The biostimulated and unbiostimulated soils' removal efficiency were found to be 66.70 to 86.70 percent and 3.69 percent, respectively. The biodegradation first-order rate constants for biostimulated and unbiostimulated soils were 0.1978 to 0.3391wk-1 and 0.0050wk-1, respectively. The biostimulated soil C containing 50 percent bone char and 50 percent pig droppings removed the most total petroleum hydrocarbon (TPH). Pig droppings were shown to be a more efficient biostimulant than pig bone char in biostimulated soils A, B, D, and E. The elimination of TPH with the best biostimulant was accurately predicted by a first-order kinetic model. It is determined that a 1:1 ratio of agro-organic waste materials such as pig droppings and pig bone char can provide a simple, practical, low-cost, and environmentally acceptable solution to the problem of crude oil contamination in soil.
Please click here: https://journaljabb.com/index.php/JABB/article/view/30170
No comments:
Post a Comment