Efficient Separation of Tritiated Water from Light Water Based on Membrane Distillation by Gas–Liquid Exchange

Hirokazu Miyoshi*,  and , Masahiro Fujiwara*, 
{"title":"Efficient Separation of Tritiated Water from Light Water Based on Membrane Distillation by Gas–Liquid Exchange","authors":"Hirokazu Miyoshi*,&nbsp; and ,&nbsp;Masahiro Fujiwara*,&nbsp;","doi":"10.1021/acssusresmgt.4c0030510.1021/acssusresmgt.4c00305","DOIUrl":null,"url":null,"abstract":"<p >The removal of tritiated water (HTO) from “ALPS-treated water” originating from the disabled Fukushima Daiichi Nuclear Power Plant (FDNPP) is an important environmental issue. In this paper, we report a new method of separating HTO from light water (H<sub>2</sub>O) based on membrane distillation by gas–liquid exchange. HTO-containing water loaded on a hydrophobic membrane modified with a photothermal black dye was exposed to artificial sunlight. The heat generated from the dye upon sunlight exposure vaporized the water, with the HTO-containing water vapor penetrating through the membrane. The permeated HTO-containing water vapor was mixed with H<sub>2</sub>O added to hydrophilic filters under the membrane. Gas–liquid exchange occurred in these filters and significantly decreased the percentage of HTO in the water collected under all filters. The increases in both the filter number and H<sub>2</sub>O content in the hydrophilic filters increased the efficiency of HTO separation. When four hydrophilic filters containing H<sub>2</sub>O and four hydrophobic filters were set alternately, the ratio of HTO collected under these filters decreased to 12 ± 0.3%. This process was also effective for the removal of <sup>137</sup>Cs from <sup>137</sup>Cs-containing water.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"1 11","pages":"2452–2460 2452–2460"},"PeriodicalIF":0.0000,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Sustainable Resource Management","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acssusresmgt.4c00305","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The removal of tritiated water (HTO) from “ALPS-treated water” originating from the disabled Fukushima Daiichi Nuclear Power Plant (FDNPP) is an important environmental issue. In this paper, we report a new method of separating HTO from light water (H2O) based on membrane distillation by gas–liquid exchange. HTO-containing water loaded on a hydrophobic membrane modified with a photothermal black dye was exposed to artificial sunlight. The heat generated from the dye upon sunlight exposure vaporized the water, with the HTO-containing water vapor penetrating through the membrane. The permeated HTO-containing water vapor was mixed with H2O added to hydrophilic filters under the membrane. Gas–liquid exchange occurred in these filters and significantly decreased the percentage of HTO in the water collected under all filters. The increases in both the filter number and H2O content in the hydrophilic filters increased the efficiency of HTO separation. When four hydrophilic filters containing H2O and four hydrophobic filters were set alternately, the ratio of HTO collected under these filters decreased to 12 ± 0.3%. This process was also effective for the removal of 137Cs from 137Cs-containing water.

Abstract Image

基于气液交换膜蒸馏技术从淡水中高效分离三态水
从废弃的福岛第一核电站(FDNPP)的 "ALPS 处理水 "中去除三价水(HTO)是一个重要的环境问题。本文报告了一种基于气液交换膜蒸馏技术从轻水(H2O)中分离 HTO 的新方法。含 HTO 的水负载在用光热黑色染料改性的疏水膜上,暴露在人造太阳光下。阳光照射时染料产生的热量使水汽化,含 HTO 的水蒸气透过膜。渗透后的含 HTO 水蒸气与膜下亲水过滤器中的 H2O 混合。在这些过滤器中进行了气液交换,大大降低了在所有过滤器下收集的水中的 HTO 百分比。亲水过滤器中过滤器数量和 H2O 含量的增加提高了 HTO 的分离效率。当四个含 H2O 的亲水过滤器和四个疏水过滤器交替设置时,在这些过滤器下收集到的 HTO 比例下降到 12 ± 0.3%。这一过程对于从含 137Cs 的水中去除 137Cs 也很有效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信