Effect of soil chemical properties on the remediation of phenanthrene-contaminated soil by electrokinetic-Fenton process.
The electrokinetic-Fenton (EK-Fenton) remediation of soil contaminated with phenanthrene was studied. Two different soils were chosen to investigate the effects of chemical properties, such as Fe oxide contents and acid soil buffer capacity. The H(2)O(2) concentrations in pore water, the electrical potential distributions and the electrical currents were monitored to assess the electrochemical effect in relation to the soil properties. Hadong caly had high acid buffer capacity, and thus the amount of electroosmotic flow was lager in the experiment with Hadong clay than with EPK kaolin. The major mechanism of phenanthrene removal was a degradation in the experiment with EPK Kaolin, while it was a simple transport away from the system in experiment with Hadong clay. It was mainly because of the lower acid buffering capacity and better H(2)O(2) stability in case with EPK Kaolin than with Hadong clay.
Kim
Jung-Hwan
JH
Environment Energy Engineering (En3), 4th Floor, Dongcheon Building, Kangnam-Ku, Seoul, South Korea. genkjh@wm.cau.ac.kr
Han
Sang-Jae
SJ
Kim
Soo-Sam
SS
Yang
Ji-Won
JW
D000538:Aluminum Silicates; D002021:Buffers; D002254:Carbonates / Q000737:chemistry; D000077215:Clay; D004563:Electrochemistry; D006861:Hydrogen Peroxide / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000032:analysis; D007616:Kaolin; D010616:Phenanthrenes / Q000032:analysis* / Q000737:chemistry; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D013431:Sulfates / Q000737:chemistry; D018505:Waste Management / Q000379:methods
D000538:Aluminum Silicates; D002021:Buffers; D002254:Carbonates; D010616:Phenanthrenes; D012987:Soil; D012989:Soil Pollutants; D013431:Sulfates; D007616:Kaolin; C031181:phenanthrene; D006861:Hydrogen Peroxide; D007501:Iron; D000077215:Clay