Boric acid recovery using polymer filtration: Studies with alkyl monool, diol, and triol containing polyethylenimines
Boric acid recovery using polymer filtration: Studies with alkyl monool, diol, and triol containing polyethylenimines
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DOI：
10.1002/app.21857
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发表时间：
2005-08
影响因子：
3
通讯作者：
Barbara F. Smith;T. Robison;B. Carlson;A. Labouriau;G. K. Khalsa;N. C. Schroeder;G. Jarvinen;C. Lubeck;S. L. Folkert;Dominic I. Aguino
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文献类型：
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作者：
Barbara F. Smith;T. Robison;B. Carlson;A. Labouriau;G. K. Khalsa;N. C. Schroeder;G. Jarvinen;C. Lubeck;S. L. Folkert;Dominic I. Aguino
合成了三种含有直链烷基一元醇、1，2-二醇和1，2，3-三醇基团的水溶性聚合物，它们主要位于聚乙烯亚胺的伯胺上，对它们进行了表征，并测试了它们回收硼酸的能力。通过滴定、超滤和电感耦合等离子体/原子发射光谱分析测定了这些聚合物与主链聚乙烯亚胺的硼结合能力。在低硼浓度下，1，2，3-三醇聚合物的性能优于1，2-二醇，而在高硼浓度下，1，2-二醇的性能优于1，2，3-三醇。11B-核磁共振波谱和不同盐浓度下的保留值研究表明，硼通过与质子化胺离子配对和生成硼酸酯的方式与这两种聚合物相互作用。对于一元醇和聚乙烯亚胺主链，硼的结合机制仅为离子配对。目前正在考虑将这些聚合物用于选择性回收和再循环压水式核反应堆主冷却剂回路中使用的浓缩酸。#2005威利期刊，Inc.应用理科杂志97：1590-1604,2005
Three water-soluble polymers containing linear alkyl monool, 1,2-diol, and 1,2,3-triol groups, mostly on the primary amines of polyethylenimine, were synthesized, characterized, and tested for their ability to recover boric acid. The boron-binding capacities of these polymers and the backbone polyethylenimine were determined by titration, ultrafiltration, and inductively coupled plasma/atomic emission spectroscopy analysis. At low boron concentrations, the 1,2,3-triol polymer performed better than the 1,2-diol, whereas at high boron concentrations, the 1,2-diol outperformed the 1,2,3-triol. 11B-NMR spectroscopy and retention studies with various salt concentrations indicated that boron interacted with these two polymers by means of ion pairing with the protonated amines and by borate ester formation. For the monool and the polyethylenimine backbone, the mechanism for boron binding was ion pairing only. These polymers are under consideration for the selective recovery and recycling of enriched boric acid used in the primary coolant loop of pressurized water nuclear reactors. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1590–1604, 2005