Development of Simultaneous Recovery System of Rare Metals from Deep Ocean Water

深海水稀有金属同步回收系统的研制

基本信息

批准号：
18560724
负责人：
YOSHIZUKA Kazuharu
金额：
$ 2.5万
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 (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560724/
关键词：
Ocean resources Rare metal Adsorptive separation Deep ocean water 反応・分離工学

项目摘要

For the purpose of efficient and selective separation and recovery of rare metals such as lithium, strontium, rubidium and cesium from deep ocean water, we have carried out : (1) Development of novel adsorbents having high selectivity of strontium, rubidium and cesium lithium against coexisting ions such as sodium, magnesium, (2) Evaluation of adsorption and separation performance of the adsorbents, (3) Development of granulation method suitable for the adsorbents preventing large pressure drop in the adsorption column, and (4) Investigation of simultaneous recovery system of rare metals from the seawater using the column module. As results of this research, the followings were obtained and these results were already published in several journals and international conferences.(1) We have successfully developed zeolite A adsorbent which high-selectively recognizes strontium and cesium ions. We have also investigated the relationship between adsorption properties and selectivity and crystal structures of the adsorbents.(2) We have elucidated that the adsorption of target ions was preceded under the ion exchange mechanism.(3) We have prepared the granular adsorbents with some millimeter order using with several kinds of binders such as chitin, alumina and silica binders. We have elucidates the optimal binder and amount ratio between adsorbent and binder. We have also developed a novel granulation method using extruder.(4) We have examined the influence of some experimental conditions on the selective recovery of rare metals in artificial deep ocean water in detail. We have investigated the durability of the granulated adsorbents under the adsorption-desorption operation of the column module system.

为了进行有效和选择性的分离和恢复稀有金属，例如深海水中的锂，腹膜，rub和最典范，我们进行了：（1）开发具有高可选择性的新型吸附剂，对腹膜，rub和锂的选择性很高颗粒方法适用于可吸附的吸附剂，以防止吸附柱中的压力大大下降，（4）使用柱模块从海水中同时研究稀有金属的同时恢复系统。作为这项研究的结果，获得了以下内容，并且这些结果已经在几个期刊和国际会议上发表。（1）我们成功地开发了沸石一种吸附剂，高度选择地识别腹膜和剖宫产。 We have also investigated the relationship between adsorption properties and selectivity and crystal structures of the adsorbents.(2) We have elucidated that the adsorption of target ions was preceded under the ion exchange mechanism.(3) We have prepared the granular adsorbents with some millimeter order using with several kinds of binders such as chitin, alumina and silica binders.我们已经阐明了吸附剂和粘合剂之间的最佳粘合剂和量比。（4）我们还研究了某些实验条件对人造深海水中稀有金属的选择性回收的影响（4）详细研究了一种新型的颗粒方法。我们已经研究了柱模块系统的吸附 - 吸附操作下的颗粒吸附剂的耐用性。