同时从水生环境中去除多核化物 (Sr2+,Co2+,Cs+和I-) 使用基于水酸盐的水净化工艺
Seong Deok Seo1, Hai Son Truong-Lam2, Changsu Jeon1
1Offshore Plant Resources R&D Center, Korea Institute of Industrial Technology, Busan 46744, Republic of Korea.
Journal of hazardous materials
|October 18, 2023
概括
这项研究表明,一种新的以水合物为基础的工艺有效地从污染水中去除主要的放射性核素,如Sr2+,Co2+,Cs+和I-. 该方法同时在约70分钟内去除超过85%的离子,提供高效的净化溶液.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 核化学 核化学 核化学
背景情况:
- 现有的放射性核素去除方法,如离子交换和膜分离是有效的,但产生二次废物,不能同时去除所有污染物.
- 气体水合物工艺已经显示出从盐水中同时去除离子的潜力,在单个步骤中,没有预处理或后处理.
研究的目的:
- 为了研究在核事故地区发现的主要放射性核素 (Sr2+,Co2+,Cs+,I-),以水合物为基础的净水工艺的去除特性.
- 用这种水合物工艺评估共存盐离子对放射性核酸去除效率的影响.
主要方法:
- 基于水酸盐的净水工艺被用来处理含有特定放射性核素的水样.
- 评估了Sr2+,Co2+,Cs+和I-的去除效率,无论是否存在干扰盐离子.
- 检查了被移除的离子的物理位置 (例如,附着在水合物晶体表面).
主要成果:
- 基于水合物的工艺同时去除了超过85%的目标放射性核素离子.
- 无论是否存在并存的盐离子,都实现了有效的去除.
- 净化过程需要大约70分钟才能显著地去除离子.
- 发现大多数污染物离子都附着在水合物晶体的外表面.
结论:
- 基于水合物的净水工艺显示出高效率和同时去除多个放射性核素.
- 该过程是强大的,即使在干扰盐离子的存在下也表现良好.
- 一项拟议的改进涉及水合物晶体外部部分溶解步骤,以优化净化效率.
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