权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

キレート剤による岩石/廃棄物からの金属抽出とCO2利用・鉱物化プロセスの開発

使用螯合剂从岩石/废物中提取金属以及二氧化碳利用/矿化工艺的开发

基本信息

批准号：
21K14571
负责人：
WANG JIAJIE
金额：
$ 2.91万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Early-Career Scientists
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

项目摘要

This research aims to develop a high-efficiency and low-cost CO2 mineralization process using recyclable chelating agents and industrial wastes/rocks at low to moderate temperatures.In the first year of research, the excellent role of chelating agent on promoting CO2 mineralization was confirmed. Based on clarification of the effects of various conditions on mineral dissolution and carbonation, the system was optimized (Wang et al., J. Environ. Chem. Eng., 2022). Moreover, the special role of chelating agents on controlling Ca carbonates purity and morphologies was confirmed (Wang et al., Sci. Rep., 2021), which has great significance in making valuable products for industrial application.However, the process still poses a challenge in terms of chemical costs, particularly for Na2CO3. This issue was addressed in the second year of research, during which the process was further developed to eliminate the need for chemical consumption during CO2 storage and significantly reduce costs. The feasibility of applying this process to various industrial wastes was also verified. Additionally, the possibility of using natural chelating agents such as amino acids and applying the process in underground rock reservoirs is currently under investigation, with preliminary results already published (Yoshioka et al., Front. Environ. Sci., 2022; Takahashi et al., Geochemics, 2023; Kikuchi et al., Front. Environ. Sci., 2022).Finally, the removal of impurity metals from the recyling solution is being studied, and the results are expected to be applied in the near future.

本研究旨在利用可回收的螯合剂和工业废渣/岩石，在中低温条件下开发一种高效、低成本的CO2矿化工艺。在第一年的研究中，证实了螯合剂对CO2矿化的良好促进作用。在澄清了各种条件对矿物溶解和碳化的影响的基础上，对系统进行了优化(Wang等人，J.化学。工程，2022年)。此外，证实了螯合剂在控制碳酸钙纯度和形貌方面的特殊作用(Wang等人，Sci.这在生产工业应用的有价值的产品方面具有重要意义。但是，该工艺仍然在化学成本方面构成挑战，特别是对Na2CO3而言。这一问题在研究的第二年得到了解决，在此期间，进一步开发了该工艺，以消除二氧化碳储存过程中对化学品消耗的需要，并显著降低成本。并验证了该工艺应用于各种工业废物处理的可行性。此外，目前正在研究使用氨基酸等天然螯合剂并将这一过程应用于地下岩层的可能性，初步结果已经公布(Yoshioka等人，Front)。环境。科学，2022；高桥等人，地球化学，2023；菊内等人，前线。环境。最后，正在研究从回收液中去除杂质金属，结果有望在不久的将来得到应用。