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Characteristics of nanosized polyaluminum chloride coagulant prepared by electrolysis process
Liu, HJ; Qu, JH; Hu, CZ; Zhang, SJ
2003
Source PublicationCOLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume216Issue:1Pages:139-147
AbstractPolyaluminum chloride (PAC) has become a focus of many studies involving coagulation because of its advantages over traditional coagulants. In this study, a novel method involving an electrolysis process for preparing of PAC was developed. The products were characterized using Al-27 NMR spectroscopy, dynamic light scattering (DLS) and transmission electron micrograph (TEM). Results indicated that the electrolysis process provided favorable conditions for the formation of significant quantities of active species (Al-13 polymer) at relatively high concentrations of total Al (Al-T) (0.2-2.0 mol l(-1)). For each concentration of Al-T, there was an optimum molar ratio of OH/Al (n) for formation of Al-13. The Al-13 species was stable for more than 6 months in solution when the n value was < 2.0. However, in solutions with n values above 2.2, the Al-13 species gradually converted to other polynuclear forms that were not detectable by Al-27 NMR spectroscopy. The results of DLS and TEM showed that the particles existing in PAC prepared by the electrolysis process were in the nanometer size range. (C) 2002 Elsevier Science B.V. All rights reserved.
Department环境水质学国家重点实验室
KeywordPreparation Polyaluminum Chloride Electrolysis Process Al-13 Polymer Stability
WOS Research AreaChemistry
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/23745
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Liu, HJ,Qu, JH,Hu, CZ,et al. Characteristics of nanosized polyaluminum chloride coagulant prepared by electrolysis process[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2003,216(1):139-147.
APA Liu, HJ,Qu, JH,Hu, CZ,&Zhang, SJ.(2003).Characteristics of nanosized polyaluminum chloride coagulant prepared by electrolysis process.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,216(1),139-147.
MLA Liu, HJ,et al."Characteristics of nanosized polyaluminum chloride coagulant prepared by electrolysis process".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 216.1(2003):139-147.
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