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6397190 
Journal Article 
Study on Kinetics of Coagulant Polysilicate Aluminium Ferric Magnesium in Coagulation Process 
Chen, L 
2012 
Yes 
Advanced Materials Research
ISSN: 1022-6680 
Advanced Materials Research 
550-553 
2680-2684 
WOS:000319487001185 
With poly aluminum ferric silicate (II) and magnesium (PSAFMS) coagulation treatment of four kinds of reactive dyes, through the determination of its absorbance with coagulation time changes, studied the coagulation reaction kinetics problems, as PSAFMS coagulant development would lay the theoretical foundation of application. Under coagulation condition that the water temperature was 8 degrees C, pH=11, PSAFMS coagulant dosage was 10 ml/L, in 3 minutes the decolorization rate of reactive red RSB was 94.6%, reactive blue 3GF was 93.3%, reactive navy blue S-G was 80.8% and reactive yellow M-3RE was 75%. Different reactive dye decolorization rate is differences. It is related to dye molecular structure and particle size of the radius. From ln(rho(0)/rho(t))-t, (1/rho(0)-1/rho(t))-t relation curve of the linear correlation coefficient, the first-order reaction of the linear correlation coefficient than the secondary correlation coefficient was better, and more than 0.9668, so PSAFMS coagulant with reactive dye decolorization reaction is the first-order. The rate equations for the ln(rho(0)/rho(t)) = kt, just different reactive dye has different reaction rate constant.< 
PSAFMS; reactive dyer; decolorization; kinetics