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Synthesis of Polyporous Ion-Sieve and Its Application for Selective Recovery of Lithium from Geothermal Water
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-07-03 00:00:00 , DOI: 10.1021/acsami.9b07401 Hongyu Lin 1 , Xiaoping Yu 1 , Mingli Li 2 , Ji Duo 2 , Yafei Guo 1 , Tianlong Deng 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-07-03 00:00:00 , DOI: 10.1021/acsami.9b07401 Hongyu Lin 1 , Xiaoping Yu 1 , Mingli Li 2 , Ji Duo 2 , Yafei Guo 1 , Tianlong Deng 1
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The widespread use of lithium-ion batteries has led to continuously increasing demands for lithium. In order to recover lithium from geothermal water, a novel composite lithium ion-sieve was synthesized and applied in this work. The stability of the material was successfully solved by granulating using acid-alkali resistant polyvinyl chloride as a binder, and its adsorption performances were also improved by using polyethylene glycol (PEG-6000) as a porogen to obtain a polyporous structure. When the developed material was applied for lithium separation from geothermal water, the adsorption capacity reached 12.84 mg/g at 328.15 K with an equilibrium time of about 12 h. The material can be well regenerated using 0.25 mol/L HCl to realize cycle use. The separation factors between Li+ and other co-existing ions were within the range of 273.58–521.28, and the attenuation of adsorption capacity after five cycles was no more than 2%. The high selectivity and reusability properties of the polyporous ion-sieve make the material a potential candidate for the selective separation and recovery of a low concentration of lithium from geothermal water.
中文翻译：
多孔离子筛的合成及其在地热水中选择性回收锂的应用
锂离子电池的广泛使用导致对锂的需求不断增加。为了从地热水中回收锂，合成了一种新型的复合锂离子筛并将其应用在这项工作中。通过使用耐酸碱的聚氯乙烯作为粘合剂制粒，成功地解决了材料的稳定性，并且通过使用聚乙二醇（PEG-6000）作为致孔剂获得多孔结构，还改善了其吸附性能。当将开发的材料用于从地热水中分离锂时，在328.15 K下的吸附容量达到12.84 mg / g，平衡时间约为12 h。使用0.25 mol / L HCl可以很好地再生该材料，从而实现循环使用。Li +之间的分离因子其他共存离子在273.58-521.28之间，五个循环后的吸附能力衰减不超过2％。多孔离子筛的高选择性和可重复使用性使该材料成为从地热水中选择性分离和回收低浓度锂的潜在候选材料。
更新日期：2019-07-03
中文翻译：
多孔离子筛的合成及其在地热水中选择性回收锂的应用
锂离子电池的广泛使用导致对锂的需求不断增加。为了从地热水中回收锂，合成了一种新型的复合锂离子筛并将其应用在这项工作中。通过使用耐酸碱的聚氯乙烯作为粘合剂制粒，成功地解决了材料的稳定性，并且通过使用聚乙二醇（PEG-6000）作为致孔剂获得多孔结构，还改善了其吸附性能。当将开发的材料用于从地热水中分离锂时，在328.15 K下的吸附容量达到12.84 mg / g，平衡时间约为12 h。使用0.25 mol / L HCl可以很好地再生该材料，从而实现循环使用。Li +之间的分离因子其他共存离子在273.58-521.28之间，五个循环后的吸附能力衰减不超过2％。多孔离子筛的高选择性和可重复使用性使该材料成为从地热水中选择性分离和回收低浓度锂的潜在候选材料。
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