| 高浓度高Alb含量聚合氯化铝的制备及其水解行为研究 |
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| 引用本文： | 贾建军,赵长伟,张静波,栾兆坤,武洁玮,刘成蹊.高浓度高Alb含量聚合氯化铝的制备及其水解行为研究[J].无机化学学报,2009,25(2):345-349. |
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| 作者姓名： | 贾建军 赵长伟 张静波 栾兆坤 武洁玮 刘成蹊 |
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| 作者单位： | 1. 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,北京,100085
2. 中国矿业大学化学与环境工程学院,北京,100083 |
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| 摘 要： | 高浓度高Alb含量聚合氯化铝的制备及其相关性质研究一直是国内外学者研究的热点和前沿问题.本文首先采用化学法合成出AlT=0.2 mol·L-1,Alb高于85%的低浓度高Alb含量的聚合氯化铝,并在热侧温度55℃,冷侧温度20℃条件下进行膜蒸馏浓缩,首次成功地制备出总铝浓度AlT=2.52mol·L-1,Alb含量高达88%的高浓度高Alb含量的聚合氯化铝溶液.其次,对两种高Alb含量的低浓度和高浓度的聚合氯化铝新产品进行了水解特性研究,分别考察了稀释倍数、pH和稀释时间等因素对溶液中聚铝形态分布的影响.结果表明,稀释刚一开始时,Alb下降比较明显,但随着稀释倍数的增大,Alb含量降低较为缓慢,但在整个稀释过程中Alb含量仍能保持在70%以上;溶液的pH在碱性范围内对聚铝形态有一定影响,在碱性范围内,随着pH的增加,Alb含量逐渐增加,Alb、Alc含量逐渐减少,在酸性和中性较宽的范围内能够保持较高的Alb含量和较低的Alb含量;稀释时间对铝形态的影响较小,Alb聚合形态能够保持较长时间的稳定性.实验结果表明我们所制备的高浓度高Alb含量聚合氯化铝具有相当的化学稳定性.
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| 关 键 词： | 高浓度聚合氯化铝 膜蒸馏 水解 铝形态分布 |
Preparation and Hydrolysis Behavior of High Concentration Polyaluminium Chloride Solutions with High Content of Alb |
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| JIA Jian-Jun,ZHAO Chang-Wei,ZHANG Jing-Bo,LUAN Zhao-Kun,WU Jie-Wei and LIU Cheng-Xi.Preparation and Hydrolysis Behavior of High Concentration Polyaluminium Chloride Solutions with High Content of Alb[J].Chinese Journal of Inorganic Chemistry,2009,25(2):345-349. |
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| Authors: | JIA Jian-Jun ZHAO Chang-Wei ZHANG Jing-Bo LUAN Zhao-Kun WU Jie-Wei and LIU Cheng-Xi |
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| Institution: | State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,School of Chemical and Environment Engineering, China University of Mining and Technology, Beijing 100083,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 and School of Chemical and Environment Engineering, China University of Mining and Technology, Beijing 100083 |
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| Abstract: | |
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| Keywords: | high concentration polyaluminium chloride membrane distillation hydrolysis Al species distribution |
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