Flocculation behavior of colloidal particles induced by different cationic flocculant structure in the presence of polyanion

摘要

Cationic polyelectrolytes(C-PE)are utilized as flocculants to enhance the rate of solid/liquid separation in water treatment.In the water bodies,there are inevitable natural organic matters(NOM),with opposite charge in addition to solid particles.Previously,we have reported the remarkable effect of polyacrylic acid(PAA),an analogue of NOM to inhibit the function of C-PE in flocculation1.However,the effect of molecular structure of flocculant can be considered to have an influence on this behavior.Here,we tested polystyrene latex(PSL)as colloidal particle,polyacrylic acid(PAA)with three different cationic flocculant structures.