Research Article

Environmental Science and Pollution Research

, Volume 18, Issue 1, pp 38-45

First online:

Effects of soil type on leaching and runoff transport of rare earth elements and phosphorous in laboratory experiments

  • Lingqing WangAffiliated withInstitute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
  • , Tao LiangAffiliated withInstitute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences Email author 
  • , Zhongyi ChongAffiliated withInstitute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
  • , Chaosheng ZhangAffiliated withDepartment of Geography and Environmental Change Institute, National University of Ireland

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Abstract

Introduction

Through leaching experiments and simulated rainfall experiments, characteristics of vertical leaching of exogenous rare earth elements (REEs) and phosphorus (P) and their losses with surface runoff during simulated rainfall in different types of soils (terra nera soil, cinnamon soil, red soil, loess soil, and purple soil) were investigated.

Results and analyses

Results of the leaching experiments showed that vertical transports of REEs and P were relatively low, with transport depths less than 6 cm. The vertical leaching rates of REEs and P in the different soils followed the order of purple soil > terra nera soil > red soil > cinnamon soil > loess soil. Results of the simulated rainfall experiments (83 mm h−1) revealed that more than 92% of REEs and P transported with soil particles in runoff.

Conclusion

The loss rates of REEs and P in surface runoff in the different soil types were in the order of loess soil > terra nera soil > cinnamon soil > red soil > purple soil. The total amounts of losses of REEs and P in runoff were significantly correlated.

Keywords

Soil Phosphorous Rare earth elements Simulated rainfall Manure