No abstract

No abstract

The anthracene (ANT), and the large amounts of soil contaminated by this hazardous polycyclic aromatic hydrocarbon (PAH), necessitate developing a practical treatment method to prevent further environmental damage. Here, we describe a method for effectively pretreating soil highly contaminated with ANT (≈500 mg ANT/kg soil), i.e., we apply Fenton oxidation in which ethanol is added to increase ANT removal. In addition to determining the optimum amounts of ethanol, Fe2+, and H2O2 needed to achieve maximum removal efficiency of ANT from simulated soil (andesol particles), i.e., ≈97%, we also employ GC-MS and HPLC to determine the main oxidation product generated by the optimized Fenton reaction: 9,10-anthraquinon (ANTQUI). The biodegradability of ANTQUI is subsequently confirmed to be much more rapid than that of ANT, i.e., biodegradability of 90 versus 30% over 30 days, results demonstrating that the proposed treatment method can be effectively applied to remove ANT prior to disposal at industrial waste sites.

Our findings suggest that the ApoE ε4 is associated with both atrophy of GM volume and disruption of WM integrity in SMI without WMH.