title: The use of spent mushroom compost to enhance the ability of Atriplex halimus to phytoremediate contaminated mine soils.
abstract: The mushroom cultivation industry produces a huge amount of spent mushroom compost (SMC), a wide world agricultural organic waste which causes serious environmental problems. However, this cheap organic waste could be useful in the remediation of contaminated soils. The aim of this work was to assess the potential of SMC in combination with the native shrub Atriplex halimus, to phytoremediate two mine soils contaminated with Cd, Pb and Cu. Firstly, to minimize metal availability in the soil, the optimal doses of SMC were determined. Secondly, a phytoremediation assay in greenhouse conditions was carried out to test the effects of A. halimus in combination with SMC at different doses. The results showed the ability of SMC to reduce soil acidity, the mobility of the metals and the enhancement of A. halimus growth. SMC promoted metal immobilization in the root of A. halimus and decreased the translocation from the roots to the shoots. The combination of SMC amendment and A. halimus produced phytostabilization of the metals in the mine soils assayed. In conclusion, SMC represents an adequate organic solid waste which in combination with A. halimus can reduce the adverse impact caused by the high mobility of metals in acid mine soils.
authors: a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain.
authors: Iván
authors: I
authors: Frutos
authors: a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain.
authors: Carlos
authors: C
authors: García-Delgado
authors: b Department of Geology and Geochemistry , University Autónoma of Madrid , Madrid , Spain.
authors: Victoria
authors: V
authors: Cala
authors: a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain.
authors: Agustin
authors: A
authors: Gárate
authors: a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain.
authors: Enrique
authors: E
authors: Eymar
mesh_terms: D000363:Agaricales; D027466:Atriplex / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018533:Biomass; D002104:Cadmium / Q000378:metabolism; D003300:Copper / Q000378:metabolism; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007854:Lead / Q000378:metabolism; D019216:Metals, Heavy / Q000378:metabolism*; D008906:Mining; D018520:Plant Shoots / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000378:metabolism*; D062611:Solid Waste / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; D062611:Solid Waste; D002104:Cadmium; D007854:Lead; D003300:Copper
keywords: Heavy metals; agricultural waste; immobilization; phytostabilization; pollution