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Citation: LU Hong-Xia, LIU Fu-Sheng, YU Shi-Tao, WANG Qing-Jun. Preparation and Flocculating Performance of Cationic Polyacrylamide[J]. Chinese Journal of Applied Chemistry, ;2008, 25(1): 101-105. shu

Preparation and Flocculating Performance of Cationic Polyacrylamide

1.
College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042

Corresponding author: LIU Fu-Sheng,
Received Date: 13 February 2007
Available Online: 25 May 2007

Cationic polyacrylamide was prepared,and effects of various factors such as oxidant-reductant concentration,azo-compound concentration,and cationic degree on the intrinsic viscosity of the product were studied.The influence of pH,the intrinsic viscosity,cationic degree,and the dosage of the cationic polyacry-lamide on the flocculating performance were also studied.When the(NH₄)₂S₂O₈ and CH₃NaO₃S·2H₂O concentrations were 0.015 0%,the azo-compound concentration was 0.012 5%,the monomer concentration was 40%,and the cationic degree was 40%,the intrinsic viscosity of the product was 13.1 dL/g.The obtained optimum flocculating conditions were that the pH of the wastewater was 6.0,the intrinsic viscosity of the cationic polyacrylamide was 11.9 dL/g,the cationic degree was 40%,and the dosage was 0.027%.Under the above conditions,the transmittance of visible light for the wastewater after treatment was 98.0%,and the flocculating rate was 66.0%,and the dewatering rate was 70.0%.
- cationic polyacrylamide,
- intrinsic viscosity,
- flocculation performance
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