TY - JOUR
T1 - Evaluation a self-assembled anionic polyacrylamide flocculant for the treatment of hematite wastewater
T2 - Role of microblock structure
AU - Zhang, Shixin
AU - Zheng, Huaili
AU - Tang, Xiaomin
AU - Sun, Yongjun
AU - Wu, Yexuan
AU - Zheng, Xinyu
AU - Sun, Qiang
N1 - Publisher Copyright:
© 2018 Taiwan Institute of Chemical Engineers
PY - 2019/2
Y1 - 2019/2
N2 - Self-assembly is able to control molecular structure of flocculants and improves their flocculation efficiency. In this study, template polymerization and ultrasonic initiation system attributed to the self-assembly of anionic polyacrylamide (TPAS-U) with a microblock structure using acrylamide (AM) and sodium p-styrene sulfonate (SSS) as monomers and poly (allylammonium chloride) (PAAC) as template. The functional groups and ordered microblock structure in TPAS-U were discovered via characterization analysis. Association constant (KM) manifested the self-assembly mechanism. And the role of ultrasonic in the synthesis was discussed as well. TPAS-U with well-organized/special structure had excellent flocculation performance in the treatment of hematite wastewater over other anionic flocculants. The flocs formed by TPAS-U possessed the big size, the compact structure and the strong recover ability after breakage. The uniform and regular microblock structure in TPAS-U attributed to the high utilization efficiency of negative charges, which improved neutralization, adsorption and bridging in the treatment.
AB - Self-assembly is able to control molecular structure of flocculants and improves their flocculation efficiency. In this study, template polymerization and ultrasonic initiation system attributed to the self-assembly of anionic polyacrylamide (TPAS-U) with a microblock structure using acrylamide (AM) and sodium p-styrene sulfonate (SSS) as monomers and poly (allylammonium chloride) (PAAC) as template. The functional groups and ordered microblock structure in TPAS-U were discovered via characterization analysis. Association constant (KM) manifested the self-assembly mechanism. And the role of ultrasonic in the synthesis was discussed as well. TPAS-U with well-organized/special structure had excellent flocculation performance in the treatment of hematite wastewater over other anionic flocculants. The flocs formed by TPAS-U possessed the big size, the compact structure and the strong recover ability after breakage. The uniform and regular microblock structure in TPAS-U attributed to the high utilization efficiency of negative charges, which improved neutralization, adsorption and bridging in the treatment.
KW - Anionic polyacrylamide
KW - Floc characteristic
KW - Flocculation mechanism
KW - Microblock structure
KW - Self-assembly
KW - Treatment of hematite wastewater
UR - http://www.scopus.com/inward/record.url?scp=85054648399&partnerID=8YFLogxK
U2 - 10.1016/j.jtice.2018.09.030
DO - 10.1016/j.jtice.2018.09.030
M3 - 文章
AN - SCOPUS:85054648399
SN - 1876-1070
VL - 95
SP - 11
EP - 20
JO - Journal of the Taiwan Institute of Chemical Engineers
JF - Journal of the Taiwan Institute of Chemical Engineers
ER -