Combining phytoextraction by Brassica napus and biochar amendment for the remediation of a mining soil in Riotinto (Spain)

Gasco Guerrero, Gabriel and Álvarez Calvo, María Luisa and Paz Ferreiro, Jorge and Mendez Lazaro, Ana M. (2019). Combining phytoextraction by Brassica napus and biochar amendment for the remediation of a mining soil in Riotinto (Spain). "Chemosphere" (n. 231); pp. 562-570. ISSN 0045-6535. https://doi.org/10.1016/j.chemosphere.2019.05.168.

Description

Title: Combining phytoextraction by Brassica napus and biochar amendment for the remediation of a mining soil in Riotinto (Spain)
Author/s:
  • Gasco Guerrero, Gabriel
  • Álvarez Calvo, María Luisa
  • Paz Ferreiro, Jorge
  • Mendez Lazaro, Ana M.
Item Type: Article
Título de Revista/Publicación: Chemosphere
Date: September 2019
ISSN: 0045-6535
Subjects:
Freetext Keywords: Biochar; Heavy metals; Brassica napus; Biomass production; Soil biochemical properties; Soil quality
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Soil contamination in mining areas is an important environmental concern. In these areas, phytoremediation is often impeded because of the low fertility and pH. Assisted phytoremediation is increasingly being used in polluted areas. Biochar could assist plant growth via enhanced soil fertility. An experiment was performed in a mining soil (RIII) from the mining area of Riotinto (Spain) contaminated with Cu, Pb, Zn and As in order to study: (i) The effects of biochar on soil fertility; (ii) Biochar temperature of preparation effect and (iii) Effect of biochar on phytoremediation potential. A mesocosm experiment was designed using Brassica napus as test specie. Soil (RIII) was treated with rabbit manure biochars prepared at 450 °C (BM450) and 600 °C (BM600) at a rate of 10% in mass and incubated for 60 days with or without Brassica napus. Results showed that the combination of BM450 or BM600 with Brassica napus growth decreased the amount of As, Cu, Co, Cr, Se and Pb in the soil. Values of bioaccumulation factor (BAF) for Cd were particularly elevated (>10) in the unamended soil and reached values higher than 1 for other elements, indicating the potential of Brassica napus to accumulate several heavy metals. Translocation Factor (TF) was reduced for Co, Cr, Cd, Cu, Ni, Zn, Pb and As after biochar addition indicating root accumulation of these metals. In all cases, biochar addition increased biomass production. Finally, the addition of BM450 increased GMea index indicating also an improvement on soil quality.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainCGL2014-58322-RUnspecifiedUnspecifiedTratamiento de suelos contaminados por metales mediante combinación de técnicas de fitorremediación con adición de biochar

More information

Item ID: 67959
DC Identifier: https://oa.upm.es/67959/
OAI Identifier: oai:oa.upm.es:67959
DOI: 10.1016/j.chemosphere.2019.05.168
Official URL: https://www.sciencedirect.com/science/article/pii/S004565351931080X
Deposited by: Memoria Investigacion
Deposited on: 15 Dec 2021 13:29
Last Modified: 15 Dec 2021 13:29
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