A novel methodology for investigating the redox potential of underground water in China’s Beishan HLW repository site
- 56 Downloads
The determination of the redox potential (Eh) of underground water in repository site is extremely important for long-term safety evaluation. The present study has developed a novel methodology for Eh estimation of the underground water of Beishan borehole 28 (BS28), which consists of the on site logging, the modelling with the characteristics of sampled water and rock cores and the verification study dedicated to evaluate the reliability of the Eh measurement. An Eh range between − 56 and 118 mV is suggested for BS28 underground water at 365–690 m deep after a thorough analysis of both modelling data and measurements.
KeywordsHLW repository Redox potential (Eh) Beishan site On site measurement Eh modelling
Funding for this research was provided by the National Natural Science Foundation of China (NSFC, No. 41773095, 41403075) and the Fundamental Research Fund of Sun Yat-sen University No. 45000-18833403). The authors are grateful to Zhichao Zhou, Ming Zhang, Ruili Ji, Weiqiang Li and other workers from Beijing Research Institute of Uranium Geology, for their skilful and helpful contribution to the on site investigation. Thanks are also given to Prof. Gérard Cote (PSL Research University, Chimie ParisTech - CNRS, France), for his helpful and constructive comments. Declarations of interest: none.
Compliance with ethical standards
Conflict of interest
The authors declare no conflict of interest.
- 1.Wang J (2010) High-level radioactive waste disposal in China: update 2010. J Rock Mech Geotech Eng 2:1–11Google Scholar
- 4.Wu X, Kang M, Cai Z, Song Y, Shang C, Xu F, Wang J, Li Y, Chen F (2017) Investigation of redox potential of beishan site and its impact on mobility of redox-sensitive radionuclides. J Nucl Radiochem 39(3):227–234Google Scholar
- 7.Kang M, Jiang M, Yang Z, Chen F, Liu C (2013) Prediction of the species and solubility of uranium in beishan groundwater. J Nucl Radiochem 35(3):160–166Google Scholar
- 12.Stumm W, Morgan J (1970) Aquatic chemistry: chemical equilibria and rates in natural waters, 3rd edn. Wiley, HobokenGoogle Scholar
- 15.Nordstrom DK, Jenne EA, Ball JW (1979) Redox equilibria of iron in acid mine waters. In: Chemical modelling in aqueous system. ACS symposium series, Chapter 3, pp 51–79Google Scholar
- 16.Nordstrom DK, Puigdomenech I (1986) Redox chemistry of deep ground-waters in Sweden. SKB. Tech. Rep. http://www.skb.se/upload/publications/pdf/TR86-03webb.pdf. Accessed 25 May 2019
- 18.Guan H, Zhang Z, Su X, Long H, Wang B, Yao J, Song Z, Chen X (2009) Calculation on the distribution of americium species in Beishan groundwater. J Nucl Radiochem 31(2):121–124Google Scholar
- 19.Measuring ORP on YSI 6-series sondes: tips, cautions and limitations. YSI Environmental. https://www.ysi.com/File%20Library/Documents/Technical%20Notes/T608-Measuring-ORP-on-YSI-6-Series-Sondes-Tips-Cautions-and-Limitations.pdf. Accessed 25 May 2019
- 20.Office of water data coordination (1972) National handbook of recommended methods for water data acquisition. U.S.Geological Survey, Washington D.C.Google Scholar
- 21.Parkhurst DL, Appelo CAJ (1999) User’s guide to PHREEQC (Version 2): a computer program for speciation, one-dimensional transport, and inverse geochemical calculations. Water-resources investigation report. U.S.Geological Survey, DenverGoogle Scholar
- 24.Japan Nuclear Cycle Development Institute (JNC). 2000. H12: Project to establish the scientific and technical basis for HLW disposal in Japan—Supporting Report 3, Safety assessment of the geological disposal system [R/OL]. JNC TN1410 2000-004. Japan Nuclear Cycle Development Institute, IbarakiGoogle Scholar
- 27.Dou S, Chen F, Yang Y, Wu S, Kang M, Zhang R (2010) Estimation of saturation index for the precipitation of secondary minerals during waterrock interaction in granite terrains. Geochim 39(4):326–336Google Scholar