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Characterization of a hybrid polyacrylamide and its flocculation properties in cyanide tailing suspensions
Liu, Ya1,2; Lv, Cuicui1,2; Ding, Jian1,2; Qian, Peng1; Yu, Yang3; Ye, Shufeng1; Chen, Yunfa1

An inorganic-organic hybrid flocculant Al(OH)(3)-polyacrylamide (Al-PAM) with narrow molecular weight distribution was synthesized using inverse microemulsion polymerization. The hybrid polymer Al-PAM was characterized by Infrared spectroscopy, thermogravimetric analysis, transmission electron microscopy and scanning electron microscopy, and it was found that it had a 'star-like' structure in which Al(OH)(3) colloidal particles acted as cores linking PAM chains. The properties of Al-PAM were investigated in flocculating 10 wt% cyanide tailing suspensions. It was found that as the amount of Al-PAM(M1) with high molecular weight and aluminum content increased, the initial settling rate of particles accelerated, achieving the maximum 6.6 m/h, 17.3 times the rate of the control without flocculants. The turbidity of the supernatant decreased to 35 +/- 2 NTU accordingly, compared to 353 +/- 2 NTU of that in the control, which meant that 90.0% of turbidity was removed from the cyanide tailing suspensions. The flocculation mechanism was further explored by floccule size and. potential measurements. The superior performance of cationic Al-PAM in flocculating negatively charged particles compared to commercial non-ionic GG indicated that electrostatic repulsion between tailing particles was a crucial factor in deciding the flocculation performance of the polymer. The study demonstrated that both charge neutralization and bridge adsorption were conductive to the particle flocculation.

KeywordAcrylamide Cyanide Tailing Suspensions Flocculation Inorganic-organic Hybrid Polymer Inverse Microemulsion
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
WOS KeywordQuartz-crystal Microbalance ; Adsorption ; Polymers ; Performance ; Coagulants ; Removal ; Kaolin ; Silica ; Water
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
WOS IDWOS:000415638000023
Citation statistics
Document Type期刊论文
Corresponding AuthorYe, Shufeng; Chen, Yunfa
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
3.Lakehead Univ, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Recommended Citation
GB/T 7714
Liu, Ya,Lv, Cuicui,Ding, Jian,et al. Characterization of a hybrid polyacrylamide and its flocculation properties in cyanide tailing suspensions[J]. WATER SCIENCE AND TECHNOLOGY,2017,76(9):2482-2493.
APA Liu, Ya.,Lv, Cuicui.,Ding, Jian.,Qian, Peng.,Yu, Yang.,...&Chen, Yunfa.(2017).Characterization of a hybrid polyacrylamide and its flocculation properties in cyanide tailing suspensions.WATER SCIENCE AND TECHNOLOGY,76(9),2482-2493.
MLA Liu, Ya,et al."Characterization of a hybrid polyacrylamide and its flocculation properties in cyanide tailing suspensions".WATER SCIENCE AND TECHNOLOGY 76.9(2017):2482-2493.
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