Effect of aluminum ion on sedimentation of kaolinite using anionic polyacrylamides as flocculant based on two-dimensional fractal dimension. Issue 6 (19th March 2019)

• Record Type: Journal Article
• Authors: Sun, Liqing; Cao, Yijun; Ma, Zilong
• Is Part Of: Energy sources. Volume 41:Issue 6(2019)
• Page Start: 645
• Page End: 653
• Publication Date: 2019-03-19
• Subjects: Aluminium ion -- flocculation mechanism -- fractal dimension -- Kaolinite sedimentation; Natural resources -- Periodicals; Energy consumption -- Periodicals; Energy consumption -- Climatic factors -- Periodicals; Energy conversion -- Periodicals; Energy conversion -- Environment aspects -- Periodicals; Power (Mechanics) -- Periodicals; 333.7905
• DOI: 10.1080/15567036.2018.1520347
• Languages: English
• ISSNs: 1556-7036

Abstract

ABSTRACT: Based on 2D fractal dimension, the effect of aluminum ion (Al 3+ ) 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 Al 3+, the supernatant turbidity increases first and then decreases, while the trend of fractal dimension with Al 3+ 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.