Diesel Fuel Degradation from Contaminated Soil by <i>Dracaena reflexa</i> Using Organic Waste Supplementation

Abstract

The phytoremediation potential of Dracaena reflexa to remediate diesel contaminated soil was determined in a greenhouse study. D. reflexa was planted in soil contaminated with different concentrations of diesel fuel (1, 2.5 and 5 wt%). 5 (wt%) of three different organic wastes [tea leaf (TL), soy cake (SC) and potato skin (PS)] were mixed with the soil and monitored for 270 days. The results of the biodegradation of oil and its fractions showed a reduction of 90 % and 98 % of total petroleum hydrocarbons (TPHs) in soil amended with SC, at 2.5 % and 1 % fuel, respectively. It was observed that in the non-cultivated polluted soil the TPHs, were reduced by 24-27 %. Soil amended with SC provided the greatest diesel fuel loss when compared to other organic waste supplements. D. reflexa roots did not accumulate hydrocarbons from the soil, but the number of hydrocarbon utilizing bacteria was high in the rhizosphere, thus suggesting that the mechanism of the oil degradation was via rhizodegradation. This study has shown that D. reflexa amended with organic wastes has a potential for biodegrading hydrocarboncontaminated soil.

Bio-Enrichment of Waste Crude Oil Polluted Soil: Amended with Bacillus 139SI and Organic Waste

“…The result is similar to that of Medjor et al [21] who reported that at the end of 1200 hours of bioremediation of groundwater polluted with diesel oil, first order reaction showed the constant rate of 0.002 hour-1and half-life (t1/2) of 346.5 hours. Dadrasnia and Agamuthu [7] also have indicated that soil treated with soycake (SC) with a higher amount of N and P recorded a high biodegradation rate at the end of three months of study. They reported low half-life and high biodegradation rate constant in diesel contaminated soil with biowastes amendment compared with unamended control soil.…”

“…More than 200 species of bacteria, yeasts, and fungi have been identified, which are capable of degrading hydrocarbons. In addition, many studies have proven the positive effects of biostimulation in the restoration of total petroleum hydrocarbon contaminated sites [6], [7].…”

Isolation and Screening of Diesel Degrading Bacteria from Ship Dismantling Facility at Tanjungjati, Madura, Indonesia

“…Diesel is a seawater and soil contaminant [4]. Worldwide, about 1.7-8.8 million metric tons of diesel are released into the aquatic environment and soil each year [5]. Reference [6] states that the maximum concentration of PAH in seawater is 0.003 mg/L.…”

Pea cultivar Blauwschokker for the phytostimulation of biodiesel degradation in agricultural soil

“…Phytoremediation is a very promising ecological method employed to clean up different matrices from different contaminants (Di Gregorio et al 2014, 2015; Matsodoum Nguemté et al 2018). A number of studies thus far have focused on the phytoremediation of diesel fuel-contaminated soil (Dadrasnia and Agamuthu 2013; Olajuyigbe and Aruwajoye 2014; Hatami et al 2018); however, relatively little is known about the phytoremediation of soil contaminated with biodiesel, and it still remains unclear if phytoremediation technology is appropriate for removing biofuel from soil. One of the challenges of phytoremediation is identifying appropriate plants for degradation of pollutants.…”