Bioslurry treatment of a soil contaminated with low concentrations of total petroleum hydrocarbons

Biodegradation of aged polycyclic aromatic hydrocarbons (PAHs) by microbial consortia in soil and slurry phases

“…The degradation of some PAHs in this experiment was much lower than those reported by Zappi et al, in which the level of naphthalene dropped from 1.1 mg kg −1 soil to <0.05 mg kg −1 by the 21st day. However, the degradation decreased with an increase in the number of benzene rings [43]. No significant reductions of pyrene and benzo(a)pyrene were observed during the course of that experiment.…”

Oxidation of oily sludge in supercritical water

“…Advance analyses on waste oil showed that it is composed of 40-52 wt% alkane, 28-31 wt% aromatics, 7-22.4 wt% resins, and 8-10 wt% asphaltenes [4,5]. Many of these components are toxic, mutagenic and carcinogenic [6][7][8]. Therefore, their release to the environment is strictly controlled and they are classified as priority environmental pollutants by the US Environmental Protection Agency, due to posing a serious threat to the environment [9].…”

Toxicological Profile for Ethylbenzene

“…The partitioning and transport processes in water, soil, and aquatic life are also well characterized (ASTER 1995;Dewulf et al 1996;Kawamura and Kaplan 1983;Ligocki et al 1985;Swann et al 1983). Transformation and degradation processes have also been well characterized in air (Atkinson and Carter 1984;Atkinson et al 1978;Grovenstein and Mosher 1970;Herron and Huie 1973;Hoshino et al 1978;O'Brien et al 1975;Ohta and Ohyama 1985;Ravishankara et al 1978;Yanagihara et al 1977), water (Acton and Barker 1992;Anid et al 1993;Bouwer and McCarty 1984;Burback and Perry 1993;Ehrhardt and Petrick 1984;Gschwend et al 1982;Hutchins 1991;Masten et al 1994;Wakeham et al 1983;Wilson et al 1986), and in soil and sediment (Bestetti and Galli 1984;Chen and Taylor 1995;Hutchins 1991;Hutchins et al 1991;Jamison et al 1970;Ramanand et al 1995;Van der Linden and Thijsse 1965;Yadav and Reddy 1993;Zappi et al 1996). No data need is identified at this time.…”

“…degraded ethylbenzene (in a mixture with other BTEX chemicals) by 18% after 45 days of incubation at 70 °C and by 32% after 45 days of incubation at 60 °C, respectively. Zappi et al (1996) reported that ethylbenzene degraded rapidly in a pilot scale bioslurry reactor under aerobic conditions. The initial concentration (0.35 mg/kg) was degraded by 94% in 2 days.…”