4.6 Article

Comparison of compost with biochar versus technosol with biochar in the reduction of metal pore water concentrations in a mine soil

Journal

JOURNAL OF GEOCHEMICAL EXPLORATION
Volume 192, Issue -, Pages 103-111

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.gexplo.2018.06.007

Keywords

Compost; Technosol; Biochar; Water; Metal; Mine soil

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Mining activities cause serious impacts on the environment, one of these impacts is the contamination of aquatic systems by metals carried by the leachates of these soils. In order to try to reduce the leached metals on mine soil waters different amendments made from residues are being applied to this type of soils. At present to enhance the characteristics of amendments made from waste and minimize their deficiencies, these amendments are being combined with biochar. Phytoremediation can be applied alone or in support of techniques such as the application of amendments made from waste. The type of phytoremediation that best adapts to large surfaces and especially to mine soils is phytostabilization. The objective of this study is to compare the ability of compost combined with biochar and Brassica juncea L. versus tecnosol combined with biochar and Brassica juncea L to reduce Cu, Ni, Pb and Zn concentrations in the pore water of a mine soil. The combination of compost + biochar + Brassica juncea L. is the best combination to reduce the concentrations of metals in a soil of this type.

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