Effects of soil type on leaching and runoff transport of rare earth elements and phosphorous in laboratory experiments
- First Online:
- 344 Downloads
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.
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.
KeywordsSoil Phosphorous Rare earth elements Simulated rainfall Manure
- Liang T, Ding S, Zhang C et al (2005) Fractionation of rare earth elements in plants 1, fractionation patterns and their forming mechanisms in different organs of Triticum aestivum. Journal of Rare Earths 23(2):224–226Google Scholar
- Song W, Liu P, Yang Y (2003) Using REE tracers to measure sheet erosion changing to rill erosion. J Rare Earths 21(6):711–715Google Scholar
- Wang L, Liang T, Hu A et al (2005) Accumulation and fractionation of rare earth elements in soil rice systems. J Rare Earth 23(6):747–749Google Scholar
- Zhu W, Zhang J, Zhang L (1996) Numerical simulation of RE migration in soils. J Chin Rare Earth Soc 14(4):341–346Google Scholar