Influence of different phosphates on adsorption and leaching of Cu and Zn in red soil

The results show that all the three phosphates can greatly improve the adsorption capacity of red soil for Cu and Zn, and the effect of different phosphates on Cu and Zn adsorption follows the order of Ca(H2PO4)2 >KH2PO4>(NH4)H2PO4

Zhong-wu LI

2016

Scholarcy highlights

  • Batch and soil column experiments were conducted to evaluate the influence of KH2PO4,H2PO4 and Ca(H2PO4)2 on the adsorption and leaching characteristics of Cu and Zn in red soil
  • The results show that all the three phosphates can greatly improve the adsorption capacity of red soil for Cu and Zn, and the effect of different phosphates on Cu and Zn adsorption follows the order of Ca(H2PO4)2 >KH2PO4>(NH4)H2PO4
  • All the three phosphates are helpful for modifying the partitioning of Cu and Zn from the non-residual phase to the residual phase; they could enhance the contents of Cu and Zn associated with exchangeable and carbonates fractions
  • Foundation item: Project supported by the National Natural Science Foundation of China; Project supported by Program for New Century Excellent Talents in University, China

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