title: Recovering a copper mine soil using organic amendments and phytomanagement with Brassica juncea L.
abstract: A 3-month greenhouse experiment was carried out for evaluating the effect of an amendment mixture and mustards on the chemical characteristics of a mine soil and the metal uptake by plants. A settling pond soil was amended with increasing percentages of a technosol and biochar mixture and vegetated with Brassica juncea L. Adding amendments and planting mustards increased the soil pH from 2.83 to 6.18 and the TSC from u.l to 131 g kg(-1) and generally reduced the CaCl2-extractable metal concentrations in the soil. However, the amendments increased the pseudo-total soil concentration of Ni from 9.27 to 31.9 mg kg(-1), Pb from 27.9 to 91.6 mg kg(-1) and Zn from 46.5 to 577 mg kg(-1). The technosol and biochar mixture increased the shoot biomass from 0.74 to 2.95 g and generally reduced the metal concentrations in plants, meaning B. juncea as a potential candidate for phytostabilization of mine soils.
authors.affiliation: Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Lagoas, Marcosende, 36310 Vigo, Pontevedra, Spain. Electronic address: fonso@uvigo.es.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Rodríguez-Vila
authors.affiliation: Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Lagoas, Marcosende, 36310 Vigo, Pontevedra, Spain.
authors.forename: Emma F
authors.initials: EF
authors.lastname: Covelo
authors.affiliation: Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Lagoas, Marcosende, 36310 Vigo, Pontevedra, Spain.
authors.forename: Rubén
authors.initials: R
authors.lastname: Forján
authors.affiliation: Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Lagoas, Marcosende, 36310 Vigo, Pontevedra, Spain.
authors.forename: Verónica
authors.initials: V
authors.lastname: Asensio
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002606:Charcoal / Q000737:chemistry; D003300:Copper / Q000032:analysis / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000032:analysis / Q000378:metabolism; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism*; D008906:Mining; D009149:Mustard Plant / Q000378:metabolism*; D009532:Nickel / Q000032:analysis / Q000378:metabolism; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D015032:Zinc / Q000032:analysis / Q000378:metabolism
chemical_list: D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; C540010:biochar; D002606:Charcoal; D007854:Lead; D003300:Copper; D009532:Nickel; D015032:Zinc
keywords: Biochar; Brassica juncea; Phytoremediation; Settling pond; Technosol