Growth of Photosynthetic Biofilms and Fe, Pb, Cu, and Zn Speciation in Unsaturated Columns with Calcareous Mine Tailings from Arid Zones | Zendy

J. Viridiana GarcíaMeza | Zendy; M. I. Contreras-Aganza | Zendy; Javier Castro-Larragoitia | Zendy; René H. Lara | Zendy

Open Access

Growth of Photosynthetic Biofilms and Fe, Pb, Cu, and Zn Speciation in Unsaturated Columns with Calcareous Mine Tailings from Arid Zones

Author(s) -

J. Viridiana GarcíaMeza,

M. I. Contreras-Aganza,

Javier Castro-Larragoitia,

René H. Lara

Publication year - 2011

Publication title -

applied and environmental soil science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.431

H-Index - 23

eISSN - 1687-7675

pISSN - 1687-7667

DOI - 10.1155/2011/732984

Subject(s) - calcareous , tailings , sulfide , environmental chemistry , environmental remediation , arid , photosynthesis , environmental science , genetic algorithm , geology , chemistry , ecology , contamination , biology , paleontology , biochemistry , organic chemistry

Mine tailing remediation aims to reduce the rate of sulfide mineral oxidation. Earlier studies showed that photosynthetic biofilms may act as a physical barrier against oxygen diffusion. Currently, a long-term assay (6 months) is required to evaluate the solid phase redistribution of the Pb, Fe, Cu, and Zn originally present in historic and calcareous mine tailing samples (in our case from a semiarid region in North-Central Mexico). The presence of biofilms may provide chemical gradients and physical conditions that shift the proportion of Fe, Cu, and Zn originally associated with oxides to carbonates and organic matter/sulfide fractions

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