A Novel Flocculant of Poly Aluminum Silicate Sulfate-Polyacrylamide Hybrid

A novel flocculant based on polyacrylamide-poly aluminum silicate sulfate (PAM-PASS) has been synthesized using a redox initiation system at 40 degrees Celsius in aqueous medium. In this paper, the influence of the concentration of acrylamide, the mole ratio of aluminum to silicon, and pH value on t...

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Bibliographic Details
Published inJournal of chemical engineering & process technology Vol. 6; no. 4; p. 1
Main Authors Chang, Li zhe, Wu wenjie, dingwei
Format Journal Article
LanguageEnglish
Published 2015
Subjects
Acrylamide
Activation
Aluminum
Aluminum silicates
Polyacrylamides
Silicon
Sodium
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Summary:A novel flocculant based on polyacrylamide-poly aluminum silicate sulfate (PAM-PASS) has been synthesized using a redox initiation system at 40 degrees Celsius in aqueous medium. In this paper, the influence of the concentration of acrylamide, the mole ratio of aluminum to silicon, and pH value on the activation of silicate, which was prepared with the sodium silicate with the modulus of 3.3, was investigated. The results showed that the optimal process conditions for preparing PAM-PASS were as follows: silica concentration of 7%, aluminum silicon ratio of 3:1, and pH value of 3.0, acrylamide mass fraction of 20.7% of total material, aluminum hydroxide accounted for 7.5% of total material quality score with ammonium persulfate and sodium bisulfite as initiator, reaction temperature 40 degrees Celsius, PAM-PASS the synthesis of 3 hours. It was found that an ionic bond exists between Al colloid and polyacrylamide (PAM) chains in the PAM-PASS; Silicon and aluminum form the amorphous polymer and the flocculation efficiency of PAM-PASS is much better than that of commercial polyacrylamide (PAM) and PASS.
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ISSN:2157-7048
2157-7048
DOI:10.4172/2157-7048.1000246