Control on Sediment Resuspension by Activated Red Mud

Abstract:

The present paper mainly studies the adsorption properties of red mud on ammonian and phosphate as well as the control on sediment resuspension. The results show that, after acidfication, the removal rate of phosphate rose from 34.0% to 83.1% with the red mud concentration of 1g/L. Furthermore, red mud can be quickly settled to the bottom, and calcium sulfate(CaS04) generated by acidification react with tricalcium aluminate(3CaO•Al2O3) or activated calcium hydroxide and aluminum hydroxide in the red mud and generate cement bacillus(3CaO•Al2O3•3CaS04), which can grow on the surface of red mud particles forming an isolation layer to inhibit sediment suspension.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 2439-2444
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.2439
• Online since: May 2012
• Authors: Ying Xuan Qu, Yan Qing Sheng, Qi Yao Sun, Chao Feng Ding
• Keywords: Acidfication, Control, Red Mud, Sediment Resuspension

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