| 초록 |
Flocculation of suspended particles using polymeric flocculants occurs by bridging the suspended particles through polymer molecules. However, the resulting flocs formed are usually bulky and contain large amounts of water which is attributed to the hydrophilicity of the solid surface and the polymer molecules. The difficulty in removing this large amount of associated water by conventional mechanical methods has resulted in renewed extensive research interest. Recently, thermo sensitive polymers that are soluble in water at low temperature, but are insoluble above the intrinsic transition temperature of the polymer are being used as novel flocculants.Chitosan, a non-toxic, biodegradable, biocompatible and environmentally friendly polymer, obtained from the native polymer chitin by fully or partially N-deacetylation, has not merited special attention of the scientific community as promising alternative. Chitin is the second to cellulose most abundant polysaccharide found in nature.The preparation, characterization and evaluation of the designed chitosan derivatives, the detailed experimental set up and the resulting flocculation results obtained will be discussed. |
