Enhanced efficiency in HA removal by electrocoagulation through optimizing flocs properties: Role of current density and pH

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Enhanced efficiency in HA removal by electrocoagulation through optimizing flocs properties: Role of current density and pH
	Liu, Huijuan; Qu, Jiuhui; Hu, Chengzhi; Sun, Jingqiu; Wang, Shuqing; Liu, Ruiping
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2017-03-24
卷号	175 期号:0 页码:248-254
关键词	Electrocoagulation Aluminum Flocs Water Treatment
英文摘要	The performance of electrocoagulation (EC) significantly depends on flocs properties that could be improved through regulating electrochemical parameters. However, little information has been collected to date regarding the relationship between flocs characteristics and electrochemical parameters. In this study, the influences of pH and current density (j) were investigated to characterize the flocs generated from EC process with aluminum anode. The results indicated that higher j performed better on HA removal due to a larger Al dosage. A highest efficiency in HA removal by EC process occurred at weak acidic range, where the flocs presented a stronger adsorption ability. Higher j and higher water pH led to a larger flocs size. The EC time to form the largest flocs was consistent with that to reach zero point charge, where surface charge favors the aggregation of Al(OH)(3) precursors to form large flocs. Flocs strength was positively correlated with applied j and negatively correlated with water pH. The flocs generated with low applied j and at low initial pH had a higher value of BET surface area and a more porous surface structure. (C) 2016 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39691]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Liu, Huijuan,Qu, Jiuhui,Hu, Chengzhi,et al. Enhanced efficiency in HA removal by electrocoagulation through optimizing flocs properties: Role of current density and pH[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,175(0):248-254.
APA	Liu, Huijuan,Qu, Jiuhui,Hu, Chengzhi,Sun, Jingqiu,Wang, Shuqing,&Liu, Ruiping.(2017).Enhanced efficiency in HA removal by electrocoagulation through optimizing flocs properties: Role of current density and pH.SEPARATION AND PURIFICATION TECHNOLOGY,175(0),248-254.
MLA	Liu, Huijuan,et al."Enhanced efficiency in HA removal by electrocoagulation through optimizing flocs properties: Role of current density and pH".SEPARATION AND PURIFICATION TECHNOLOGY 175.0(2017):248-254.