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Practical Study on the Simultaneous Recovery System of Rare Metals from Deep Ocean Water

深海水稀有金属同步回收系统的实践研究

基本信息

批准号：
20360353
负责人：
YOSHIZUKA Kazuharu
金额：
$ 11.98万
依托单位：
The University of Kitakyushu
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360353/
关键词：
海洋資源レアメタル吸着分離海洋深層水リチウム

项目摘要

In this study, the simultaneous recovery system of rare metals from seawater has been developed by hybridizing the mutual recovery system of lithium, strontium, rubidium and molybdenum with individual adsorbents. We have the following results.(1) Development of inorganic ion size-recognizable adsorbents for Sr, Rb and Mo Zeolitic adsorbent for Sr, MnO_2 type adsorbent for Rb and hematite type adsorbent for Mo were developed, respectively.(2) Elucidation of adsorption mechanism by measuring the adsorption equilibria and kinetics of metallic ionsThe dependencies of pH and concentrations of metallic ions and adsorbent amount on adsorption rates of metallic ions were elucidated by measuring the time courses of the adsorption amount of metallic ions.(3) Development of novel granulation method of adsorbentsA novel granulation method of powder adsorbents were developed by using inorganic binders suchas silica and alumina.(4) Fundamental study of mutual recovery of rare metals from simulated d … More eep ocean waterIndividual selective recovery of Li, Sr, Rb and Mo were carried out by using simulated deep ocean water. The simulated deep ocean water was prepared by referring the component analysis results of deep ocean water sampled at Okino-Torishima site in Tokyo at the end of 2005. The optimization of operation conditions such as flow rate of supplying solution, scrubbing and elution processes were carried out for suppressing the impediment of coexisting ions(5) Fundamental study of simultaneous recovery of rare metals from simulated deep ocean waterSimultaneous selective recovery of four elements from simulated deep ocean water was carried out by using the lab-scale experimental apparatus. In these elements, Li and Sr were recovered with high recovery efficiencies, while Rb and Mo were limited to low recovery efficiency. This is still continuing to study the enhancement of efficiencies.(6) Practical study of simultaneous selective recovery of rare metals from seawaterPractical experiments of simultaneous recovery of Li, Sr, Rb and Mo were carried out by using a pilot plant of rare metal recovery from seawater in Institute of Ocean Energy of Saga University at Imari, Saga for evaluating the time course of recovery efficiencies of adsorbents, disabilities. In these elements, Li were recovered with high recovery efficiencies, while Sr, Rb and Mo were limited to low recovery efficiency. This is still continuing to study the enhancement of efficiencies. Less

在这项研究中，通过将锂、锶、铷和钼的相互回收系统与单独的吸附剂混合，开发了从海水中同时回收稀有金属的系统。我们得到以下结果：(1)开发了Sr、Rb和Mo的无机离子尺寸识别吸附剂。分别开发了Sr沸石吸附剂、Rb的MnO_2型吸附剂和Mo的赤铁矿型吸附剂。(2)通过测量金属的吸附平衡和动力学阐明吸附机理。通过测量金属离子吸附量的时间过程，阐明了pH、金属离子浓度和吸附剂量对金属离子吸附速率的依赖性。(3)新型吸附剂造粒方法的开发利用二氧化硅和氧化铝等无机粘合剂开发了粉末吸附剂的新型造粒方法。(4)基础研究利用模拟深层海水相互回收稀有金属的研究利用模拟深层海水对Li、Sr、Rb和Mo进行了单独选择性回收。参考2005年底东京冲野鸟岛现场采样的海洋深层水的成分分析结果，制备了模拟海洋深层水。对供液流量、洗涤和洗脱过程等操作条件进行了优化，以抑制共存离子的阻碍。(5)从模拟海洋深层水中同时回收稀有金属的基础研究同时选择性回收四种使用实验室规模的实验装置对模拟深层海水中的元素进行了分析。在这些元素中，Li和Sr的回收效率较高，而Rb和Mo的回收效率较低。 (6)从海水中同时选择性回收稀有金属的实际研究利用佐贺县伊万里市佐贺大学海洋能源研究所的海水中稀有金属回收中试装置进行了同时回收Li、Sr、Rb和Mo的实际实验，以评估回收效率的时间过程。吸附剂，残疾。这些元素中，Li的回收效率较高，而Sr、Rb和Mo的回收效率较低。这还在继续研究效率的提升。较少的