Effects of oxidative coupling reaction of 4-chlorophenol with manganese oxide on the phenanthrene sorption.
The objective of this study was to evaluate the abiotic transformation rate of 4-chlorophenol (4-CP) by manganese oxide. Sorption and desorption characteristics of polycyclic aromatic hydrocarbons (PAHs) on manganese oxide were also investigated in the presence of 4-CP. Results show that manganese oxide is effective for the transformation of 4-CP and initial reaction rate is the first-order with respect to the 4-CP and manganese oxide. Also, 4-CP transformation rates by manganese oxide are highly dependent upon solution pH and concentration of humic acid. At pH near the point of zero charge (PZC) of manganese oxide, the maximum reaction rate of 4-CP was observed. Sorption of phenanthrene on manganese oxide is significantly increased as a result of 4-CP transformation and subsequent generation of byproducts. Also, sorbed phenanthrene on manganese oxide in the presence of 4-CP showed high degree of desorption resistance.
Ko
Seok-Oh
SO
Department of Civil Engineering, Kyunghee University, Yongin, Korea. soko@khu.ac.kr
Jun
Sun-Young
SY
Lee
Do-Hoon
DH
Park
Jaewoo
J
Shin
Won-Sik
WS
D000327:Adsorption; D002733:Chlorophenols / Q000737:chemistry / Q000302:isolation & purification*; D004785:Environmental Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D006812:Humic Substances; D006863:Hydrogen-Ion Concentration; D017895:Manganese Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010616:Phenanthrenes / Q000737:chemistry / Q000302:isolation & purification*; D018505:Waste Management / Q000379:methods
D002733:Chlorophenols; D004785:Environmental Pollutants; D006812:Humic Substances; D017895:Manganese Compounds; D010087:Oxides; D010616:Phenanthrenes; C029107:4-chlorophenol; C031181:phenanthrene; C027424:manganese oxide