|
KMID : 1024520050140070699
|
|
Journal of the Environmental Sciences
2005 Volume.14 No. 7 p.699 ~ p.709
|
|
|
Characteristic of Degradation of Humic Acid using Jeju Scoria Coated with WO₃/TiO₂ Photocatalyst
|
|
Ryu Seong-Pil
Oh Youn-Keun
Jeong Khang-Ok
|
|
|
Abstract
|
|
|
|
This study aimed at improving the photocatalytic degradation of HA. In this study, the Degradation of Humic Acid using Jeju Scoria Coated with in the presence of UV irradiation was investigated as a function of different experimental condition : photocatalyst dosage, addition and pH of the solution. Photodegradation efficiency increased with increasing photocatalyst dosage, the optimum catalyst dosage is 2.5 g/L and Photodegradation efficiency is maximized to . This indicates that retains a much higher Lewis surface acidity than has a higher affinity for chemical species having unpaired electrons. The addtion of cation() in water increased the photodegradaion efficiency. But the addtion of ion in water decreased a photodegradation efficiency. Photodegradation efficiency increased with decreasing pH < pzc, the electrostatic repulsion between the HA and the surface of decreased.
|
|
|
KEYWORD
|
|
|
Humic acid, Scoria
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|