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Pathways for greening the supply of rare earth elements in China

Abstract

Rare earths are essential to a wide array of different technologies, including clean technology. However, rare earths production has a large environmental footprint, warranting a greening of the industry. We quantify environmental impacts from rare earths production in China and project pathways towards sustainability of the industry to 2025 under different scenarios for development. We show that net environmental cost–benefits in 2015 were −US$14.8 billion (net cost). This cost would increase to −US$16 billion by 2025 under a reference scenario and fall to −US$6 billion by 2025 in the most environmentally friendly scenario. The single strategy that can reduce environmental impacts the most is to tackle illegal mining. Doing so would include increased regulatory enforcement and can yield significant eco-cost savings (US$5 billion). However, it may also tighten supply of rare earths and ignite market volatility, particularly in an uncertain global trade climate. A complementary strategy of relaxing restrictions on legal production can contribute to higher eco-cost savings while concurrently meeting global demand for rare earths.

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Fig. 1: Projected trends in annual REO production quantity in China.
Fig. 2: Aggregated environmental impacts for 19 development pathways for the rare earths industry compared with estimated sales revenue.
Fig. 3: Disaggregated eco-cost reductions in the scenario with the highest eco-cost savings (scenario 18).
Fig. 4: Contributions to eco-costs from each midpoint category.

Data availability

All data used to perform this study can be found in the Supplementary Datasheets. A discussion on methodology and assumptions are also available in the Supplementary Information. Any additional data that were used to support this study are available upon request from the authors.

References

  1. 1.

    Tyrer, M. & Sykes, J. in The Statistics of the Rare Earths Industry Vol. 10 12–16 (Royal Statistical Society, 2013).

  2. 2.

    Nassar, N., Du, X. & Graedel, T. Criticality of the rare earth elements. J. Ind. Ecol. 19, 1044–1054 (2015).

    Article  Google Scholar 

  3. 3.

    Zaimes, G., Hubler, B., Wang, S. & Khanna, V. Environmental life cycle perspective on rare earth oxide production. ACS Sustain. Chemi. Eng. 3, 23–244 (2014).

    Google Scholar 

  4. 4.

    Lee, J. & Wen, Z. Rare earths from mines to metals: comparing environmental impacts from China’s main production pathways. J. Ind. Ecol. 21, 1277–1290 (2017).

    CAS  Article  Google Scholar 

  5. 5.

    Sprecher, B. et al. Life cycle inventory of the production of rare earths and the subsequent production of NdFeB rare earth permanent magnets. Environ. Sci. Technol. 48, 3951–3958 (2014).

    CAS  Article  Google Scholar 

  6. 6.

    Vahidi, E., Navarroc, J. & Zhao, F. An initial life cycle assessment of rare earth oxides production from ion-adsorption clays. Resour. Conserv. Recycl. 113, 1–11 (2016).

    Article  Google Scholar 

  7. 7.

    Goonan, T. G. Rare Earth Elements—End Use and Recyclability (United States Geological Service, Reston, 2011).

  8. 8.

    Alonso, E. et al. Evaluating rare earth element availability: a case with revolutionary demand from clean technologies. Envir. Sci. Tech. 46, 3406–3414 (2012).

    CAS  Article  Google Scholar 

  9. 9.

    Nugent, D. & Sovacool, B. Assessing the lifecycle greenhouse gas emissions from solar PV and wind energy: a critical meta-survey. Energy Policy 65, 229–244 (2014).

    CAS  Article  Google Scholar 

  10. 10.

    IPCC Climate Change 2014: Mitigation of Climate Change Annex III (eds Edenhofer, O. et al.) (Cambridge Univ. Press, 2014).

  11. 11.

    Weng, Z., Haque, N., Mudd, G. M. & Jowitt, S. M. Assessing the energy requirements and global warming potential of the production of rare earth elements. J. Clean. Prod. 139, 1282–1297 (2016).

    CAS  Article  Google Scholar 

  12. 12.

    Pavel, C. et al. Substitution strategies for reducing the use of rare earths in wind turbines. Resour. Policy 52, 349–357 (2017).

    Article  Google Scholar 

  13. 13.

    USGS Rare Earth Statistics and Information (United States Geological Survey, 2017); http://minerals.usgs.gov/minerals/pubs/commodity/rare_earths/

  14. 14.

    Yang, H., Huang, X., Thompson, J. & Flower, R. Enforcement key to China’s environment. Science (Insights) 347, 834–835 (2015).

    CAS  Google Scholar 

  15. 15.

    Wübbeke, J. Rare earth elements in China: policies and narratives of reinventing an industry. Resour. Policy 38, 384–394 (2013).

    Article  Google Scholar 

  16. 16.

    Ma, Y. et al. Study on the decomposition of Baotou rare earth concentrate (in Chinese). Chinese Rare Earths 31, 20–23 (2010).

    Google Scholar 

  17. 17.

    Yang, X. J. et al. China’s ion-adsorption rare earth resources, mining consequences and preservation. Environ. Devel. 8, 131–136 (2013).

    Article  Google Scholar 

  18. 18.

    Miller, J. & Zheng, A. Molycorp files for bankruptcy protection. The Wall Street Journal (25 June 2015); http://www.wsj.com/articles/SB10907564710791284872504581069270334872848

  19. 19.

    Paul, S. Lynas rare earths revenue jumps as output grows. Reuters (15 October 2014); http://www.reuters.com/article/2014/10/14/lynas-corp-rareearths-idUSL3N0S916R20141014

  20. 20.

    Zaimes, G., Hubler, B., Wang, S. & Khanna, V. Environmental life cycle perspective on rare earth oxide production. ACS Sustain. Chem. Eng. 3, 237–244 (2015).

    CAS  Article  Google Scholar 

  21. 21.

    Schulze, R., Lartigue-Peyrou, F., Ding, J., Schebek, L. & Buchert, M. Developing a life cycle inventory for rare earth oxides from ion-adsorption deposits: key impacts and further research needs. J. Sustain. Metall. 3, 753–771 (2017).

    Article  Google Scholar 

  22. 22.

    Zapp, P., Marx, J., Schreiber, A., Friedrich, B. & Voßenkaul, D. Comparison of dysprosium production from different resources by life cycle assessment. Resour. Conserv. Recycl. 130, 248–259 (2018).

    Article  Google Scholar 

  23. 23.

    Ehsan Vahidi, F. Z. Environmental life cycle assessment on the separation of rare earth oxides through solvent extraction. J. Environ. Manage. 203, 255–263 (2017).

    Article  Google Scholar 

  24. 24.

    The Model of the Eco-costs / Value Ratio (EVR) (TU Delft, 2017); http://www.ecocostsvalue.com/index.html

  25. 25.

    2009–2015 Rare Earths Industry Development Plan (in Chinese) (Chinese Ministry of Industry and Information Technology, 2009).

  26. 26.

    Situation and Policies of China’s Rare Earth Industry (White Paper) (Chinese Information Office of the State Council, 2012).

  27. 27.

    Chinese National Development and Reform Commission Department of Industry. Special Report: Rare Earth—2013 (in Chinese). Rare Earth Inf. 3, 4–7 (2014).

  28. 28.

    Ge, J., Lei, Y. & Zhao, L. Chinaas rare earths supply forecast in 2025: a dynamic computable general equilibrium analysis. Minerals 6, 95 (2016).

    Article  Google Scholar 

  29. 29.

    Daniel Packey, D. K. The impact of unregulated ionic clay rare earth mining in China. Resour. Policy 48, 112–116 (2016).

    Article  Google Scholar 

  30. 30.

    Seaman, J. Rare Earths and Clean Energy: Analyzing China’s Upper Hand (French Institute for International Relations, Paris, 2010).

  31. 31.

    Rare Earth Industry Dilemma: Difficult to Get Rid of Black Rare Earths Still Hitting the Market (in Chinese) (IC Consulting, 2016); http://www.ocn.com.cn/chanye/201606/hlvpn23120746.shtml

  32. 32.

    Wang, S. Experts Say That the Illegal Exploitation of Rare Earths in China Amounts to About 40,000 Tons Per Year (in Chinese) (Wangyi Finance, 2013); http://money.163.com/14/1031/11/A9SPLRHG002524SO.html#from=keyscan

  33. 33.

    Chinese National Development and Reform Commission Department of Industry. Special Report: Rare Earth—2011 (in Chinese). Rare Earth Inf. 3, 4–7 (2012).

  34. 34.

    Nguyen, R. & Imholte, D. China’s rare earth supply chain: illegal production, and response to new cerium demand. JOM 68, 1948–1956 (2016).

    Article  Google Scholar 

  35. 35.

    (2016–2020) Rare Earths Industry Development Plan (in Chinese) (Chinese Ministry of Industry Information and Technology, 2016).

  36. 36.

    Wang, L. et al. Towards cleaner production of rare earth elements from bastnaesite in China. J. Clean. Prod. 165, 231–242 (2017).

    CAS  Article  Google Scholar 

  37. 37.

    Xiao, Y. et al. Study on non-saponification extraction process for rare earth separation. J. Rare Earth 31, 512–516 (2013).

    CAS  Article  Google Scholar 

  38. 38.

    Notice for the Rare Earths Cleaner Production Technology Promotion Plan (in Chinese) (Chinese Ministry of Industry Information and Technology, 2014).

  39. 39.

    Steen, B. A. Abiotic resource depletion: different perceptions of the problem with mineral deposits. Int. J. Life Cycle Ass. 1, 49–54 (2006).

    Article  Google Scholar 

  40. 40.

    Rao, Z. Consolidating policies on Chinese rare earth resources. Miner. Econ. 29, 23–28 (2016).

    Article  Google Scholar 

  41. 41.

    Cai, Q. US’s only rare earth producer went bankrupt; is China subsidizing the west? (in Chinese) China Economics (2016); http://finance.ce.cn/rolling/201601/15/t20160115_8289945.shtml

  42. 42.

    Notice of Chinese Ministry of Land Resources 2014 Rare Earth and Tungsten Ore Total Mining Quotas (in Chinese) (Chinese Ministry of Land Resources, 2014).

  43. 43.

    Notice of Chinese Ministry of Land Resources 2015 Rare Earth and Tungsten Ore Total Mining Quotas (in Chinese) (Chinese Ministry of Land Resources, 2015).

  44. 44.

    Notice of Chinese Ministry of Land Resources 2016 Rare Earth and Tungsten Ore Total Mining Quotas (in Chinese) (Chinese Ministry of Land Resources, 2016).

  45. 45.

    Wang, G. Current mining situation and potential development of rare earth in China (in Chinese). Sichuan Rare Earth 3, 4–8 (2009).

    CAS  Google Scholar 

  46. 46.

    Chen, Z. Outline on the Development and Policies of China Rare Earth Industry (Chinese Society of Rare Earths, Beijing, 2010).

  47. 47.

    IKE eBalance v. 4.7.14122.508 (IT Knowledge & Education, Sichuan University, Chengdu, 2015).

  48. 48.

    Chinese Life Cycle Database (IT Knowledge & Education, Sichuan University, Shenzhen, 2012); http://www.ike-global.com/products-2/chinese-lca-database-clcd

  49. 49.

    Ecoinvent Data (Ecoinvent Centre, 2017); http://www.ecoinvent.org

  50. 50.

    European Reference Life Cycle Database v.3.0 (Joint Research Centre European Platform on Life Cycle Assessment, European Commission, 2014); http://eplca.jrc.ec.europa.eu/ELCD3/

Download references

Acknowledgements

The authors are grateful for financial support from the National Natural Science Foundation for Outstanding Young Scholars of China (grant no. 71522011), National Basic Research Programme of China (grant no. 2010CB955903) and Commonwealth Programme on Environmental Protection (grant no. 200809062) of Ministry of Environmental Protection of China. Additional thanks go to J. Vogtländer and the rest of his team at TU Delft for their work on eco-cost and making it publicly available for other researchers and our team at Tsinghua University.

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J.L. and W.Z. co-designed the study, contributed to data collection and drafted the paper. J.L. carried out technical analyses and compiled the supplementary information with input and feedback from W.Z.

Corresponding author

Correspondence to Zongguo Wen.

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Supplementary information

Supplementary Information

Supplementary Methods, Supplementary Figure 1, Supplementary Tables 1–10, Supplementary References 1–38

Supplementary Dataset

1 spreadsheet with 6 Supplementary datasheets

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Lee, J.C.K., Wen, Z. Pathways for greening the supply of rare earth elements in China. Nat Sustain 1, 598–605 (2018). https://doi.org/10.1038/s41893-018-0154-5

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