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Cesium removal from radioactive wastewater by adsorption and membrane technology

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Frontiers of Environmental Science & Engineering 2024年第3期18卷 161-175页

作者： Shuting Zhuang Jianlong Wang School of Environment&Natural Resources Renmin University of ChinaBeijing 100872China Laboratory of Environmental Technology INETTsinghua UniversityBeijing 100084China Beijing Key Laboratory of Radioactive Waste Treatment INETTsinghua UniversityBeijing 100084China

Radiocesium is frequently present in radioactive wastewater,while its removal is still a challenge due to its small hydrated radius,high diffusion coefficient,and similar chemical behavior to other alkali metal elements with high background concentrations.This review summarized and analyzed the recent advances in the removal of Cs+from aqueous solutions,with a particular focus on adsorption and membrane separation methods.Various inorganic,organic,and biological adsorbents have undergone assessments to determine their efficacy in the removal of cesium ions.Additionally,membrane-based separation techniques,including reverse osmosis,forward osmosis,and membrane distillation,have also shown promise in effectively separating cesium ions from radioactive wastewater.Additionally,this review summarized the main approaches,including Kurion/SARRY system+desalination system and advanced liquid processing system,implemented after the fukushima Daiichi nuclear power plant accident in Japan to remove radionuclides from contaminated water.Adsorption technology and membrane separation technology play a vital role in treatment of contaminated water.

关键词： Cesium Adsorption Membrane separation Advanced liquid processing system fukushima nuclear accident

Monitoring long-term ecological impacts from release of fukushima radiation water into ocean

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Geography and Sustainability 2021年第2期2卷 95-98页

作者： Yonglong Lu Jingjing Yuan Di Du Bin Sun Xiaojie Yi State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal Wetland Ecosystems College of the Environment and EcologyXiamen UniversityFujian 361102China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Sino-Danish Center for Education and Research Beijing 100049China

After 10 years of the fukushima nuclear accident,Japan decided to release the nuclear wastewater into the Pacific Ocean on 13 April 2021.It is apparent that Japan has chosen the most cost-efficient way to deal with the contaminated water,however,great opposition and concerns have been raised internationally due to the ecotoxicological features of radioactive materials and their harmful impacts on the environment.Here we an-alyze the ecological impacts caused by the nuclear accident and the potential impacts of releasing the nuclear wastewater into the ocean.Science-based solutions are proposed through a third-party evaluation and strict envi-ronmental assessment,multi-stakeholder public participation,integrated monitoring of the neighboring coastal countries,long-term international collaborative research,and setting up international convention for ecological compensation.

关键词： fukushima nuclear accident Ecological impact Radioactive materials Public participation Compensation mechanism

Risk communication in the post-fukushima era

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Radiation Medicine and Protection 2021年第2期2卷 79-82页

作者： Limeng Cui Department of Radiation Protection Beijing Center for Disease Prevention and ControlBeijing Research Center for Preventive MedicineBeijing100013China

In the long-term phases,clear risk communication in the post-fukushima era is necessary and significant.It is the most urgent in this post-accident phase is for residents to access to all the information available within the scope of current knowledge in order to support their life decisions.For full recovery,authorities,specialists,international organizations,media,and the public will need to work together.The speed of innovation in risk communication should catch up to the development speed of the internet.Long-term communication will be necessary.Learning about the fukushima nuclear accident experience is essential for the prevention and risk communication of possible accidents in the future.

关键词： Risk communication fukushima nuclear accident Radiation

Study on Sampling Technique of Atmospheric Radionuclide

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Meteorological and Environmental Research 2014年第6期5卷 1-3,8页

作者： Wu Shan Liu Longbo Zhang Changyun Tang Hanbing Chen Liyun Wu Yanmin Xie Feng Li Zhiming Shi Quanlin Dang Haijun Northwest Institute of nuclear Technology

Atmospheric radionuclide monitoring usually includes two sampling techniques, namely ultra-high volume aerosol samplers to collect at- mospheric particles by using filter media, and radioactive noble gas samplers to collect atmospheric noble gas based on adsorption method. Atmos- pheric sampling techniques have been researched in Northwest Institute of nuclear Technology since the Comprehensive nuclear-Test-Ban Treaty （CTBT） was signed in 1996. Several ultra-high volume aerosol samplers and some types of radioactive xenon isotopes samplers had been devel- oped. For the aerosol sampler, the sampling flow is between 450 and 800 m3/h, with the minimum detectable concentration （MDC） of 131I less than 5 pBq/m3. For the xenon sampler, the sampling capacity of xenon is more than 4 ml per day, with MDC of l=Xe less than 0.25 mBq/m3. After the nuclear accident of fukushima in 2011, monitoring of the atmospheric radionuclide was carried out for 3 months at Xi＇an, and part of radionuclide was detected with concentrations hiaher than their backorounds in the period, includina 131I.134Cs. 137Cs and 133Xe.

关键词： Atmospheric radionudide Sampling technique fukushima nuclear accident Aerosol sampler Xenon sampler China