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metadata.artigo.dc.title: Agronomic efficiency of phosphate fertilizers produced by the re-use of a metallurgical acid residue
metadata.artigo.dc.creator: Barreto, Matheus Sampaio Carneiro
Mattiello, Edson Marcio
Santos, Wedisson Oliveira
Melo, Leônidas Carrijo Azevedo
Vergütz, Leonardus
Novais, Roberto Ferreira
metadata.artigo.dc.subject: Green chemistry
Phosphate rock
Soil contamination
Alternative phosphate fertilizers
Química verde
Rocha fosfato
Contaminação do solo
Fertilizantes fosfatados alternativos
metadata.artigo.dc.publisher: Elsevier 15-Feb-2018
metadata.artigo.dc.identifier.citation: BARRETO, M. S. C. et al. Agronomic efficiency of phosphate fertilizers produced by the re-use of a metallurgical acid residue. Journal of Environmental Management, London, v. 208, p. 1-7, 15 Feb. 2018.
metadata.artigo.dc.description.abstract: The production of fertilizers with industrial wastes reduces the environmental impacts of waste disposal and improves environmental sustainability by generating added-value products. Our objective with this study was to evaluate the agronomic performance and potential soil/plant contamination with heavy metals of alternative phosphate (P) fertilizers, obtained from the acidulation of phosphate rocks (PR) by a metallurgical acidic waste. Seven P fertilizers were evaluated: three PR (Araxá, Patos, and Bayóvar), their respective acidulated products (PAPR), and triple superphosphate fertilizer (TSP). A greenhouse trial was carried out to test the agronomic performances of fertilizers in a sequentially cultivated maize-soybean-white oat. The reaction of PR with acid waste was effective to increase their solubility and improve plant yield and P uptake compared to their natural PR. There was a cumulative recovery by plants of 1.4 and 8.1% of added P via PR and PAPR, respectively. No increase in heavy metal (Cd, Pb, Cr, and Ni) availability in soil or accumulation in shoots was observed, indicating that the PAPR were environmentally safe. The usage of acid waste to produce P fertilizers therefore represents a strategic way to employ marginal products for the production of fertilizers.
metadata.artigo.dc.language: en_US
Appears in Collections:DCS - Artigos publicados em periódicos

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