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题名: An effective method for improving electrocoagulation process: Optimization of Al-13 polymer formation
作者: Hu, Chengzhi; Wang, Shuqing; null(孙境求); Liu, Huijuan; Qu, Jiuhui
刊名: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
出版日期: 2016-01-20
卷号: 489, 期号:0, 页码:234-240
关键词: Electrocoagulation ; Aluminum species ; Electrochemical parameter
DOI: 10.1016/j.colsurfa.2015.10.063
部门归属: 中国科学院饮用水科学与技术重点实验室
英文摘要: Al-13 polymer has been believed to be the most active species responsible for coagulation. The character of Al species distribution and the formation of Al-13 polymer in electrocoagulation (EC) process were investigated in order to provide insight into optimizing EC operation and design. The results indicated that predominant Al species shifted from monomer toward medium polymer then to larger polymer or Al( OH)(s) with increasing EC time. The in-situ Al-13 polymer could be generated in EC process, and became the dominant species during 5-15 min. In EC process, Al-13 species fraction positively correlated with the removal of turbidity and organic. The increase of pH and current density could accelerate the hydrolysis-polymerization process of Al3+. pH 5-7 and lowering current density favored the formation of Al-13 polymer during EC process, EC process with bipolar electrodes had a higher yield of monomeric and Al-13 species, while EC process with monopolar electrodes facilitated the formation of larger polymer or Al(OH)(s). The content of Al-13 polymer can reach more than 60% under optimal conditions. (C) 2015 Elsevier B.V. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36155
Appears in Collections:中国科学院饮用水科学与技术重点实验室_期刊论文

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Recommended Citation:
Hu, Chengzhi,Wang, Shuqing,Sun, Jingqiu,et al. An effective method for improving electrocoagulation process: Optimization of Al-13 polymer formation[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2016,489(0):234-240.
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