Enhanced Production of in Situ Keggin Al-13(7+) Polymer by a Combined Fe-Al Coagulation Process for the Treatment of High Alkalinity Water

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Enhanced Production of in Situ Keggin Al-13(7+) Polymer by a Combined Fe-Al Coagulation Process for the Treatment of High Alkalinity Water
	Li, Ning ; Hu, Chengzhi ; Lan, Huachun ; Liu, Ruiping ; Liu, Huijuan ; Qu, Jiuhui
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2019-05-20
卷号	7 期号:10 页码:9544-9552
关键词	In situ Keggin Al-13(7+) polymer Alkalinity Combined Fe-Al coagulation Low Al residuals Algae containing water
ISSN号	2168-0485
英文摘要	Treatment of high alkalinity water by coagulation is one of the challenges for drinking water treatment. The solution of acidifying the raw water or adding more coagulants would inevitably increase the corrosive tendency and treatment costs. In this study, a combined Fe-Al coagulation, during which a small amount of Fe was introduced prior to Al, promoted the coagulation efficiency of Al salts significantly. In contrast to the individual Al process, the combined Fe-Al coagulation accelerated the floc growth rate with the turbidity removal increased from 46% to 73% at the Fe:Al mole ratio of 1:10 and time interval of 10 s, and better tolerated the high basicity. The Keggin Al-13(7+) polymer of the combined process was confirmed by the surface-enhanced Raman spectroscopy, X-ray photoelectron spectra, and Al-27 nuclear magnetic resonance analyses, and its enhanced generation induced by the Fe addition was investigated by the Ferron assay. The favored local pH at the colloid-water interface governed by the hydrolysis of Fe was proposed to be responsible for the enhanced coagulation of Al salts. The potential applicability of the combined Fe-Al coagulation was further demonstrated by its desirable impurity removal efficiency for the treatment of a high alkaline/pH algae containing source water.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43084]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Sch Environm, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Li, Ning,Hu, Chengzhi,Lan, Huachun,et al. Enhanced Production of in Situ Keggin Al-13(7+) Polymer by a Combined Fe-Al Coagulation Process for the Treatment of High Alkalinity Water[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(10):9544-9552.
APA	Li, Ning,Hu, Chengzhi,Lan, Huachun,Liu, Ruiping,Liu, Huijuan,&Qu, Jiuhui.(2019).Enhanced Production of in Situ Keggin Al-13(7+) Polymer by a Combined Fe-Al Coagulation Process for the Treatment of High Alkalinity Water.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(10),9544-9552.
MLA	Li, Ning,et al."Enhanced Production of in Situ Keggin Al-13(7+) Polymer by a Combined Fe-Al Coagulation Process for the Treatment of High Alkalinity Water".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.10(2019):9544-9552.