JOURNAL OF SOILS AND SEDIMENTS
·
2017
·Vol. 18
·期 4
·1540-1547
·
IF 2.522
Zhang Dong,Lu Li,Lü Ting,Jin Meiqing,Lin Jun,Liu Xingyuan,Zhao Hongting
Purpose Radioiodine is an inevitable product of nuclear fission during nuclear fuel reprocessing and nuclear accident and finally is brought back to surface soil by fallout. Iodine is very active and mobile in soil and may adversely affect human health due to bioaccumulation through the food chain. The aim of this study was to evaluate the immobilization efficiency of biochar on the mobility of iodine (I − ) and iodate (IO 3
− ) in soil near Qinshan Nuclear Power Plant. Materials and methods Biochar was produced from a widely available agricultural waste (rice husk) at a pyrolysis temperature of 350 °C. Biochar was applied to the soil at five application rates (0, 0.33, 0.67, 1, and 1.33%). The affinities of I − and IO 3
− with soil/biochar, the mobility of I − and IO 3
− in biochar-amended soil, and effects of soil pH and ionic strength on immobilization of biochar were assessed by the standard batch sorption and desorption tests. Results and discussion Rice husk-derived biochar exhibited strong affinities for I − and IO 3
− as compared to that of soil, with immobilization ability ( K
biochar / K
soil ) of 936.6 and 309.9, respectively. Results showed that addition of 1% biochar to soil could significantly reduce desorption of I − and IO 3
− from soil. In addition, immobilization efficiency of biochar was not affected by soil physicochemical properties such as pH and ionic strength. Conclusions Results suggested that the easily synthesized biochar could be a promising and environmentally friendly amendment for the efficient immobilization of soil I − and IO 3
− .
研究领域:
环境科学
·
放射生物学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Public Health
·
2023
·
IF 5.2
Wang Peng,Yu Shunfei,Zou Hua,Lou Xiaoming,Ren Hong,Zhou Lei,Lai Zhongjun,Xuan Zhiqiang,Gao Xiangjing,Xu Qiuliang,Zhou Zhen,Zhao Yaoxian,Cao Yiyao
Objectives: Radioactivity monitoring around nuclear facilities is crucial to provide important baseline data for effective detection of radioactive leakage to the environment. We aim to establish a baseline study for monitoring radioactive levels of 90Sr and 137Cs around Sammen Nuclear Power Plant (SNPP) and to assess their associated health impact on surrounding residents.Methods: In this study, we collected water and food samples around the SNPP from 2011 to 2020 and determined for 90Sr and 137Cs activity concentrations. We statistically analyzed the temporal trends of 90Sr and 137Cs and evaluated their radiation exposure to the local residents.Results: During this period, the activity concentrations of 90Sr and 137Cs varied within 1.2–9.9 mBq/L and 0.10–7.6 mBq/L in water, and 0.037–1.3 Bq/kg and 0.011–0.45 Bq/kg in food, respectively, with no significant seasonal variation trend.Conclusions: All reported activity concentrations of 90Sr and 137Cs were significantly lower than the recommended value of WHO and Chinese national standards. There is no indication of notable radioactive release into the study area due to the operation of SNPP during 2018–2020. The annual effective doses (AEDs) from the ingestion of 90Sr and 137Cs in water and food were well below the international permissible limits, indicating the radiation exposure around SNPP during 2011–2020 was kept at a safe level.
研究领域:
环境科学
·
放射生物学
·
公共健康
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Zhenzhen Cui,Baoying Wang,Ruirui Li,Zihao Wang,Weicheng Fu,Junying Yan,Liang Wu,Yaoming Wang,Tongwen Xu
Rapid and highly effective enrichment of nuclides containing liquid effluent is crucial for online monitoring of radioactive trace elements from nuclear power plants (NPPs). In this study, auxiliary electrodialysis (AED) was proposed for high enrichment of trace ions in the liquid effluents of NPPs. The effects of the auxiliary ion type and concentration and the operating voltage on the AED concentration performance were investigated. When the volume ratio of the solution was 140: 1 with 0.03 mol/L HNO 3 as the auxiliary electrolyte, most of the nuclide ions were concentrated more than 50 times after the two-stage electrodialysis experiment. In the first-stage electrodialysis, the concentration of most ions, with the exception of the higher valence ions (Ru 3+ and Zr 4+ ), tends to increase with increasing operating voltage. The diluate stream volume could be minimized to 98.8% with a total energy consumption of 9.5 kWh/m 3 . By considering the impact of boron in the liquid effluents, more than 52 times concentrations could still be achieved by extending the running time of the first-stage ED (increasing the ion removal rate). The transmembrane fluxes of various cations decreased in the order of Cs + > Sr 2+ > Zn 2+ > Co 2+ ≈ Ni 2+ ≈ Mn 2+ > Fe 3+ > Cr 3+ > Ru 3+ > Zr 4+ , which is attributed to the experimental operating parameters and ionic properties. This research provided a viable technique for rapid and highly effective enrichment of nuclides containing liquid effluents for both radioactive element monitoring and wastewater volume reduction.
研究领域:
环境科学
·
核技术应用
✓ 已验证
DOI
高影响因子
NUCLEAR ENGINEERING AND DESIGN
·
2024
·
IF 1.9
Tao Liu,Haixia Kong,Yongguo Li,Jia Wang,Haifeng Yu,Yuan Li
In this paper, nano-grade aluminum powder was used as raw material to prepare glass fiber filter material with positive Zeta potential by hydrothermal method. Since colloids of activated corrosion products in primary circuit of nuclear power plant are mainly electronegative, the filter material prepared in this experiment was used to remove colloidal particles in coolant by combining traditional mechanical filtration with electrostatic adsorption, thus improving the removal efficiency of colloidal particles. The leaching problem of soluble silicon in glass fiber filter material was studied. The leaching amount of soluble silicon in glass fiber filter material was decreased while the filtration efficiency was improved. Consequently reduce the risk of safe operation of nuclear power plants.
研究领域:
材料科学
·
核工程
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1287-1302
·
IF 1.6
Yang Jie,Lin Qiaoya,Chen Yuan,Li Yong,Sun Lewen,Wu Hanyu,Kang Mingliang
Radioactive cobalt release poses concerns since the attention to radiation safety. In this work, soil and groundwater sampled from the surroundings of the long-distance pipeline of a proposed nuclear power plant were used to assess radiation safety by studying Co(II) adsorption. The Freundlich and Langmuir models fitted the experimental data well. The results indicated that Co adsorption was an entropy-driven, spontaneous, endothermic and chemical process. The adsorption mechanism was mainly the inner-sphere complexation, and CoSO 4 (aq) contributed to the partially reversible occurrence. This study provided fundamental information about the environmental behaviours and adsorption mechanism of radioactive Co(II) surrounding the effluent pipeline. Graphical abstract
研究领域:
环境科学
·
核工程
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2014
·Vol. 301
·期 1
·57-63
·
IF 1.415
Zhang Ruobing,Zhang Hong,Hou Xiaolin,Chai Zhifang,Chen Yinfei,Fan Yukun
In order to assess the radioactive impact of Fukushima Incident on the coastal environment of Dapeng Peninsula, Shenzhen, China, combining accelerator mass spectrometry with epithermal neutron activation analysis, we measured the 129 I/ 127 I ratios and 129 I levels in surface seawater, oyster ( Ostrea gigas ) and kelp ( Sargassum henslouianum ). The results showed that the influence of Daya Bay Nuclear Power Base was ignorable to local environment, but the Fukushima Incident had caused significant increase of 129 I levels in oyster ( P < 0.001) and kelp ( P < 0.05) from Dapeng Peninsula between Jun-2011 and Apr-2012. However, the 129 I levels in oyster and kelp were far below the guideline given by Codex Alimentarius Commission and would not cause immediate harm to the health of local residents.
研究领域:
环境科学
·
核科学
·
海洋生物学
·
辐射健康
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）