聚硅氯化铝的水解形态与Al-Ferron反应动力学

周维芝; 高宝玉; 刘莉莉; 岳钦艳; 王燕

环境化学

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周维芝, 高宝玉, 刘莉莉, 岳钦艳, 王燕. 聚硅氯化铝的水解形态与Al-Ferron反应动力学[J]. 环境化学, 2006, 25(4): 466-470.

引用本文:

周维芝, 高宝玉, 刘莉莉, 岳钦艳, 王燕. 聚硅氯化铝的水解形态与Al-Ferron反应动力学[J]. 环境化学, 2006, 25(4): 466-470.

ZHOU Wei-zhi, GAO Bao-yu, LIU Li-li, YUE Qin-yan, WANG Yan. ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS[J]. Environmental Chemistry, 2006, 25(4): 466-470.

Citation:

ZHOU Wei-zhi, GAO Bao-yu, LIU Li-li, YUE Qin-yan, WANG Yan. ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS[J]. Environmental Chemistry, 2006, 25(4): 466-470.

聚硅氯化铝的水解形态与Al-Ferron反应动力学

1.
山东大学环境科学与工程学院;
2.
山东大学环境研究院, 济南, 250100
基金项目:
山东省优秀中青年科学家奖励基金(编号:2004BS08002)

山东省自然科学基金(编号:Y2005B05)资助项目

ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS

1.
School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China;
2.
Environment Research Institute, Shandong University, Jinan, 250100, China
Fund Project:

摘要: 以铝酸钠为碱化剂合成了具有不同 Si/Al摩尔比的聚硅氯化铝(2.0mol·l-1左右),利用Al-Ferron和Al-NMR研究了铝的水解聚合形态和动力学过程.结果表明,用NaAlO2作碱化剂制备的聚合铝混凝剂与Na2CO3制备的混凝剂相比,Alb减少,Alc增加.随着Si/Al摩尔比的增加,Alb/Al13形态的含量逐渐减小,高聚体Al形态含量逐渐增大.Al-Ferron络合动力学符合准一级化学反应方程,拟合方程式中的部分常数与Al形态含量密切相关,并随制备方法和Si/Al摩尔比的变化而呈规律性变化.
- 聚硅氯化铝 /
- 形态 /
- 动力学拟合方程
Abstract: High-concentration(about 2mol·l-1)flocculants-polyaluminum silicate chloride(PASiC)with different Si/Al mole ratios and polyaluminum chloride(PAC)were prepared using NaAlO2 as basification agent.The chemical species distributions of PASiC and PAC determined by Al-Ferron complexation timed spectrophotometric and 27Al-NMR methods,respectively,have been studied.Al-Ferron kinetics of PASiC and PAC were also synthesized.The experimental results show that hydrolyzing with NaAlO2 brings more Alcand less Alb compared with hydrolyzing with Na2CO3.The species distribution and transformation of PASiC are different from those of PAC,due to the interaction of polysilicic acid and hydrolyzed aluminum species.The Al13/Alb(decreased) while the Alc increased with the increasing of Si/Al ratio.The Al-Ferron kinetics of PASiC and PAC all fit the binary pseudo 1 st order rate equation.The variability of equation constants is obvious on different syntheses method and change of Si/Al molar ratios.The results also show that flocculation efficiency of PASiC is not consistent in Alb/Al13 content.
- polyaluminum silicate chloride /
- species /
- kinetics equation

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周维芝, 高宝玉, 刘莉莉, 岳钦艳, 王燕. 聚硅氯化铝的水解形态与Al-Ferron反应动力学[J]. 环境化学, 2006, 25(4): 466-470.

引用本文:

周维芝, 高宝玉, 刘莉莉, 岳钦艳, 王燕. 聚硅氯化铝的水解形态与Al-Ferron反应动力学[J]. 环境化学, 2006, 25(4): 466-470.

Citation:

聚硅氯化铝的水解形态与Al-Ferron反应动力学

1. 山东大学环境科学与工程学院;
2. 山东大学环境研究院, 济南, 250100

收稿日期: 2005-09-13

基金项目:

山东省优秀中青年科学家奖励基金(编号:2004BS08002)

山东省自然科学基金(编号:Y2005B05)资助项目

关键词:

摘要: 以铝酸钠为碱化剂合成了具有不同 Si/Al摩尔比的聚硅氯化铝(2.0mol·l-1左右),利用Al-Ferron和Al-NMR研究了铝的水解聚合形态和动力学过程.结果表明,用NaAlO2作碱化剂制备的聚合铝混凝剂与Na2CO3制备的混凝剂相比,Alb减少,Alc增加.随着Si/Al摩尔比的增加,Alb/Al13形态的含量逐渐减小,高聚体Al形态含量逐渐增大.Al-Ferron络合动力学符合准一级化学反应方程,拟合方程式中的部分常数与Al形态含量密切相关,并随制备方法和Si/Al摩尔比的变化而呈规律性变化.

English Abstract

ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS

1. School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China;
2. Environment Research Institute, Shandong University, Jinan, 250100, China

Received Date: 2005-09-13

Fund Project:

Keywords:

Abstract: High-concentration(about 2mol·l-1)flocculants-polyaluminum silicate chloride(PASiC)with different Si/Al mole ratios and polyaluminum chloride(PAC)were prepared using NaAlO2 as basification agent.The chemical species distributions of PASiC and PAC determined by Al-Ferron complexation timed spectrophotometric and 27Al-NMR methods,respectively,have been studied.Al-Ferron kinetics of PASiC and PAC were also synthesized.The experimental results show that hydrolyzing with NaAlO2 brings more Alcand less Alb compared with hydrolyzing with Na2CO3.The species distribution and transformation of PASiC are different from those of PAC,due to the interaction of polysilicic acid and hydrolyzed aluminum species.The Al13/Alb(decreased) while the Alc increased with the increasing of Si/Al ratio.The Al-Ferron kinetics of PASiC and PAC all fit the binary pseudo 1 st order rate equation.The variability of equation constants is obvious on different syntheses method and change of Si/Al molar ratios.The results also show that flocculation efficiency of PASiC is not consistent in Alb/Al13 content.

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聚硅氯化铝的水解形态与Al-Ferron反应动力学

ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS

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聚硅氯化铝的水解形态与Al-Ferron反应动力学

English Abstract

ALUMINUM HYDROLYSIS AND Al-FERRON REACTION KINETICS OF POLYALUMINUM SILICATE CHLORIDE IN DILUTED SOLUTIONS

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