Frutos Iván, García-Delgado Carlos, Cala Victoria, Gárate Agustin, Eymar Enrique
a Department of Agricultural Chemistry and Food Sciences , University Autónoma of Madrid , Madrid , Spain.
b Department of Geology and Geochemistry , University Autónoma of Madrid , Madrid , Spain.
Environ Technol. 2017 May;38(9):1075-1084. doi: 10.1080/09593330.2016.1217938. Epub 2016 Aug 9.
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.
蘑菇种植产业产生了大量的蘑菇渣（SMC），这是一种广泛存在的农业有机废弃物，会引发严重的环境问题。然而，这种廉价的有机废弃物可用于受污染土壤的修复。本研究的目的是评估SMC与本土灌木滨藜（Atriplex halimus）联合用于植物修复受镉、铅和铜污染的两种矿土的潜力。首先，为了尽量减少土壤中金属的有效性，确定了SMC的最佳用量。其次，在温室条件下进行了植物修复试验，以测试不同用量的滨藜与SMC联合使用的效果。结果表明，SMC具有降低土壤酸度、减少金属迁移性以及促进滨藜生长的能力。SMC促进了金属在滨藜根部的固定，并减少了从根部向地上部的转运。SMC改良剂与滨藜的联合使用对受试矿土中的金属产生了植物稳定作用。总之，SMC是一种合适的有机固体废弃物，与滨藜联合使用可以减少酸性矿土中金属高迁移性所造成的不利影响。
