Degradation of CI Reactive Blue 19 using combined iron scrap process and coagulation/flocculation by a novel Al(OH)3-polyacrylamide hybrid polymer

The removal of C.I. Reactive Blue 19 dye at initial concentration of 1000 mg/L was studied using iron scrap process and coagulation/flocculation by a novel synthesized Al(OH)(3)-PAM inorganic-organic hybrid polymer. A novel synthesized Al(OH)(3)-PAM was prepared using a redox initiation system while (NH4)(2)S2O8 and NaHSO3 were used to initiate the polymerization at 50 degrees C in aqueous medium. The Al(OH)(3)-PAM was characterized using FT-IR spectroscopy, TEM, and XRD. pH of dye solution and Al(OH)(3)-PAM dosage have been studied while COD reduction and color removal in different settling times were investigated. The results show that 26% of (COD) content and 45% of color have been removed by iron scrap process. Meanwhile 90% of the color and 82% of COD have been removed by Al(OH)(3)-PAM hybrid polymer in an optimum dosage of 700 mg/L and optimum effective pH between pH of 5-6. (C) 2012 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.