1. Effect of aluminum ion on sedimentation of kaolinite using anionic polyacrylamides as flocculant based on two-dimensional fractal dimension
- Author
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Yijun Cao, Liqing Sun, and Zilong Ma
- Subjects
Flocculation ,Materials science ,Renewable Energy, Sustainability and the Environment ,Sedimentation (water treatment) ,020209 energy ,Energy Engineering and Power Technology ,02 engineering and technology ,Fractal dimension ,Fuel Technology ,020401 chemical engineering ,Nuclear Energy and Engineering ,Chemical engineering ,Distilled water ,Settling ,0202 electrical engineering, electronic engineering, information engineering ,Zeta potential ,Kaolinite ,0204 chemical engineering ,Turbidity - Abstract
Based on 2D fractal dimension, the effect of aluminum ion (Al3+) on kaolinite flocculation using anionic polyacrylamides (APAMs) as flocculant has been investigated at pH 4. The settling performance was tested, and fractal dimensions of flocs were analyzed. The results show that the clearer the supernatant, the bigger fractal dimension was obtained using APAM in distilled water. With the addition of Al3+, the supernatant turbidity increases first and then decreases, while the trend of fractal dimension with Al3+ concentration is opposite. Zeta potential results indicate that different sedimentation performance and floc fractal dimension of kaolinite are caused by the different APAM flocculation mechanism.
- Published
- 2018
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