Electrokinetic Separation for Enhanced Decontamination of Soils and Groundwater Systems

电动分离增强土壤和地下水系统净化

• 批准号: EP/S032797/1
• 负责人: David Harbottle
• 金额: $ 48.2万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FS032797%2F1
• 关键词: Electrokinetic; Separation; Enhanced; Decontamination; Soils

Safely managing the legacy of first generation nuclear power, reducing nuclear risks and hazards, has in recent years become a priority for the nuclear industry both in the UK and Republic of Korea (ROK) as downscaling continues in the interim to 'new nuclear'. The Nuclear Decommissioning Authority (NDA, UK) estimate the total cost of decommissioning first generation nuclear power to be £121 B over the next 120 years, with significant costs associated to the management of spent fuel and legacy wastes. However, substantial effort is also directed towards remediating sites prior to their next planned use. Remediating soils and groundwater is extremely challenging due to the low-levels of radionuclide contaminants encountered in the environment and their strong association with clays, rendering simple washing of contaminated soils inadequate. The challenge to successfully remediate is pointedly highlighted by the vast quantities of soils which have now been removed and stored at interim facilities following the incident at the Fukushima Daiichi Nuclear Power Plant. Substantial disturbance to the ecosystem is discouraged and methods to remediate soils and groundwater in-situ are highly favored. The proposed research will consider in-situ remediation by chemical-enhanced electrokinetic separation to desorb Cs and Sr from difficult clay types. Chemical treatment using non-ionic, biodegradable polymers will be explored as a method to expand clay interlayers and recover ions which have become 'trapped' in clay particles. Once desorbed the mobile ions should be recovered to prevent their migration. Our partners at KAIST, ROK will design novel adsorbents to isolate ions at the cathode via electrochemical separation and by adsorption using 2D fabricated composite membranes that are impermeable to the selected ions to deliver rapid sorption kinetics and high adsorption capacity. The research will advance understanding on appropriate methods to desorb ions from different clay types and successfully capture mobile ions, locally concentrating the contaminants and reducing the volume of waste for ultimate disposal. As decommissioning programs advance, remediation of soils and groundwater systems will come into focus. Installing in-situ technologies which can achieve high decontamination levels, require minimal engineering support, and do not cause long-term damage to the local ecosystem are highly desired and have the potential to accelerate remediation timescales and reduce the full lifetime costs of decommissioning legacy nuclear sites. Finally, the UK-ROK international collaboration and industry partnership has an opportunity to enhance public confidence in the nuclear sector, engaging with future engineers and the general public who will witness a nuclear sector moving away from 'care and maintenance' to actively returning legacy sites to their desired end-state, all at the same time as growing 'new nuclear' and moving waste to its ultimate destination in a geological disposal facility.

安全地管理第一代核电的遗产，减少核风险和危害，近年来已成为英国和韩国核工业的优先事项，因为在过渡期间继续缩减规模，以“新核”。英国核退役管理局(NDA，UK)估计，未来120年，第一代核电退役的总成本为GB 121 B，其中与乏燃料和遗留废物管理相关的成本很高。然而，在下一次计划使用地点之前，还将做出大量努力进行补救。修复土壤和地下水极具挑战性，因为环境中遇到的放射性核素污染物水平很低，而且它们与粘土有很强的相关性，使得简单地清洗受污染的土壤是不够的。福岛第一核电站发生事故后，大量土壤被移走并储存在临时设施中，这明显突显了成功补救的挑战。不鼓励对生态系统造成实质性干扰，并高度支持就地修复土壤和地下水的方法。拟议的研究将考虑通过化学增强电动分离来就地修复，以解吸难处理的粘土类型中的Cs和Sr。使用非离子、可生物降解聚合物的化学处理将被探索为一种扩大粘土夹层和回收已被困在粘土颗粒中的离子的方法。一旦解吸，应回收可移动离子，以防止其迁移。我们在韩国KAIST的合作伙伴将设计新型的吸附剂，通过电化学分离和使用2D合成的复合膜吸附来隔离阴极上的离子，这些复合膜对选定的离子是不渗透的，以提供快速的吸附动力学和高的吸附能力。这项研究将促进人们对从不同类型的粘土中解吸离子的适当方法的了解，并成功地捕获可移动离子，使污染物局部集中，并减少最终处置的废物体积。随着退役计划的推进，土壤和地下水系统的修复将成为关注的焦点。安装现场技术可以达到高去污水平，需要最低限度的工程支持，并且不会对当地生态系统造成长期损害，这是非常可取的，并有可能加快补救时间，降低退役遗留核设施的整个生命周期成本。最后，英国和韩国的国际合作和行业伙伴关系有机会增强公众对核能行业的信心，与未来的工程师和普通公众接触，他们将见证核能行业从‘维护和维护’转向积极地将遗留场所恢复到理想的最终状态，同时发展“新核”并将废物转移到地质处置设施的最终目的地。

项目成果

Functionalization of mesoporous carbons derived from pomelo peel as capacitive electrodes for preferential removal/recovery of copper and lead from contaminated water

• DOI: 10.1016/j.cej.2022.134508
• 发表时间: 2022-01-14
• 期刊: CHEMICAL ENGINEERING JOURNAL
• 影响因子: 15.1
• 作者: Lu, Jiming;Mishra, Prashant Kumar;Xu, Zhenghe
• 通讯作者: Xu, Zhenghe

Immobilization of KTS-3 on an electrospun fiber membrane for efficient removal of Cs+ and Sr2+

• DOI: 10.1016/j.jece.2021.105991
• 发表时间: 2021-07-07
• 期刊: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
• 影响因子: 7.7
• 作者: Eom, Ho Hyeon;Kim, Yonghwan;Lee, Jae W.
• 通讯作者: Lee, Jae W.

Facile one-pot synthesis of dual-cation incorporated titanosilicate and its deposition to membrane surfaces for simultaneous removal of Cs+ and Sr2+

• DOI: 10.1016/j.apsusc.2019.07.008
• 发表时间: 2019-11-01
• 期刊: APPLIED SURFACE SCIENCE
• 影响因子: 6.7
• 作者: Kim, Yun Kon;Kim, Sungjun;Lee, Jae W.
• 通讯作者: Lee, Jae W.

Effective removal of cesium from wastewater via adsorptive filtration with potassium copper hexacyanoferrate-immobilized and polyethyleneimine-grafted graphene oxide.

• DOI: 10.1016/j.chemosphere.2020.126262
• 发表时间: 2020-02
• 期刊: Chemosphere
• 影响因子: 8.8
• 作者: Yonghwan Kim;H. Eom;Y. Kim;D. Harbottle;Jae W. Lee

A novel highly osmotic K/Fe3O4/CNF magnetic draw solution for salty water desalination

• DOI: 10.1016/j.desal.2022.115903
• 发表时间: 2022-09-15
• 期刊: DESALINATION
• 影响因子: 9.9
• 作者: Aende, Aondohemba;Gardy, Jabbar;Hassanpour, Ali
• 通讯作者: Hassanpour, Ali