A comparison of treatments for anthracene using two bench-scale treatability test methods.

摘要

Two bench-scale treatability methods were investigated for assessing the degradation of anthracene--a three-ringed polycyclic aromatic hydrocarbon (PAH) frequently discovered in soils contaminated with petroleum hydrocarbons, creosote, coal tar, and other hazardous wastes. Solid-phase and slurry-phase test methods were used to evaluate six treatments and a control, chosen from previously published bioremediation research. The treatments included DARAMEND{dollar}sp{lcub}rm TM{rcub}{dollar} amendment, Igepal{dollar}spcircler{dollar} and Tween{dollar}spcircler{dollar} surfactants, ORC{dollar}spcircler{dollar} and Fenton's oxidation, and bioaugmentation. The use of radio-labelled anthracene, spiked into a previously uncontaminated soil, allowed for detailed monitoring of anthracene mineralization over a 91-day study period. Five treatments (DARAMEND{dollar}sp{lcub}rm TM{rcub},{dollar} Fenton's, bioaugmentation, Igepal{dollar}spcircler,{dollar} and ORC{dollar}spcircler{dollar}) mineralized significantly more anthracene than did the controls for the solid-phase method whereas only three treatments (bioaugmentation, DARAMEND{dollar}sp{lcub}rm TM{rcub}{dollar} and Igepal{dollar}spcircler{dollar}) did so for the slurry-phase method. The solid-phase method was superior to the slurry-phase method regarding the recovered amount of radio-labelled anthracene, and especially the amount that completely mineralized.