TY - JOUR
T1 - UV-initiated polymerization of hydrophobically associating cationic polyacrylamide modified by a surface-active monomer
T2 - A comparative study of synthesis, characterization, and sludge dewatering performance
AU - Liao, Yi
AU - Zheng, Huaili
AU - Qian, Li
AU - Sun, Yongjun
AU - Dai, Li
AU - Xue, Wenwen
PY - 2014/7/9
Y1 - 2014/7/9
N2 - Two cationic polyacrylamides, PAA and PAD, were synthesized for sludge dewatering. The advanced instruments such as 1H NMR, FTIR, and SEM were used to characterize the two copolymers. Their hydrophobic association properties in water were investigated by viscosimetry as well as the dewatering performance studied by the sludge dewatering experiment. The results showed that the optimum conditions for preparation of PAA were that the initiator concentration, urea concentration, molar ratio of AODBAC to AM, and irradiation time were 0.3‰, 1.0%, 10:90, and 60 min, respectively. Also, it was found that PAA had a stronger hydrophobic interaction with a lower intrinsic viscosity and longer dissolution time as well as a better dewatering performance. Furthermore, the charge neutralization and bridging effects were found to contribute much to the sludge dewatering by PAA in which the dewatering performance was able to be enhanced further by the hydrophobic interaction.
AB - Two cationic polyacrylamides, PAA and PAD, were synthesized for sludge dewatering. The advanced instruments such as 1H NMR, FTIR, and SEM were used to characterize the two copolymers. Their hydrophobic association properties in water were investigated by viscosimetry as well as the dewatering performance studied by the sludge dewatering experiment. The results showed that the optimum conditions for preparation of PAA were that the initiator concentration, urea concentration, molar ratio of AODBAC to AM, and irradiation time were 0.3‰, 1.0%, 10:90, and 60 min, respectively. Also, it was found that PAA had a stronger hydrophobic interaction with a lower intrinsic viscosity and longer dissolution time as well as a better dewatering performance. Furthermore, the charge neutralization and bridging effects were found to contribute much to the sludge dewatering by PAA in which the dewatering performance was able to be enhanced further by the hydrophobic interaction.
UR - http://www.scopus.com/inward/record.url?scp=84904096653&partnerID=8YFLogxK
U2 - 10.1021/ie5016987
DO - 10.1021/ie5016987
M3 - 文章
AN - SCOPUS:84904096653
SN - 0888-5885
VL - 53
SP - 11193
EP - 11203
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 27
ER -