| Title |
Fundamental Studies on the Treatment of Particulate Organic Substances Contained in Wastewater by Flotation |
| Authors |
유정민 ( Jung Min Yoo ) ; 김동수 ( Dong Su Kim ) |
| Keywords |
Critical surface tension; flotation; Particulate organic matter; Work of adhesion; Zisman plot |
| Abstract |
Basic studies for the treatment of particulate organic substances contained in wastewater by flotation have been conducted. Four kinds of plastics were chosen as the possibly existing organic particles in wastewater and the Zisman plots for these substances were constructed by measuring the contact angle of liquids on their surfaces. The critical surface tensions for these organic substances were estimated based on the constructed Zisman plot and the floatability of organic substances were regarded to be related with their molecular structure. The existence of dissolved organic substances such as a surfactant was observed to affect the extent of flotation of particulate organics. In addition, the consideration of work of adhesion was thought to be better than adopting the critical surface tension as the analytical basis in the operational design of flotation process of organic particles. |