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| Effect of pH for the homoaggregationand flocculation behavior of ultrafine kaolinite |
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Received:March 10, 2016
Revised:March 15, 2016
Accepted:March 17, 2016
Published Online:October 21, 2016
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| DOI： |
| KeyWord:Kaolinite; quartz crystal microbalance; homoaggregation;Flocculation |
| Author | Institution |
| Wu Ya-Yue |
School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou |
| Liao Chun-Fa |
School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou |
| Chen Qian |
Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China;School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China |
| Xu Sheng-ming |
Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China;School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing ,China |
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| Abstract: |
| Homoaggregation and flocculation behavior of ultrafine kaolinite in different pH aqueoussolutionwere studied by adissipative quartz crystal microbalance (QCM-D). Due to increasing the surface potential of octahedral aluminum oxy-hydroxyl (Al?O?OH), the results illustrate that homoaggregation behavior of ultrafine kaolinite were inhibited with increasing the pH value. Meanwhile, the pH of aqueous solution plays an important role in controlling the adsorption kinetics of cationicpolyacrylamide polymer on ultrafine Kaolinite.In the case of pH 8.5, polymer adsorption most closely for kaolinite, whereas when solution pH =6.5 formed the most porous adsorption layer. The cationicpolyacrylamide has better flocculation effectin alkalescence condition. As the solution from weak acid to weak alkaline, cationic polyacrylamide flocculating settling velocity of kaolinite increased significantly. The result of setting experiment consisted with the result of QCM-D. |
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