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Atrazine sorption in soil treated with biochar. Repositório Alice
NOVOTNY, E. H.; RESENDE, M. F. de; RAMOS, N. de A.; MADARI, B. E..
Biochar has been used worldwide as soil amendment. Due to the high sorption capacity of organic compounds by charcoal in general, the use of biochar can change the soil sorptive properties, that could result in a environmental protective strategy in one hand and/or in need of higher pesticides doses in another hand. However no data in the literature is available about the long term effect of biochar application in the sorptive properties of the soil, even studies about the sorptive properties of soil treated with biochar are scarce, the few available papers are with pure biochar. This unprecedented work, evaluating the sorption of atrazine in a clayed soil treated with biochar, under experimental field conditions, evaluated the sorption isotherms one and...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Carbono pirogênico; Biochar; Pesticidas; Atrazina; Sorção; Cromatografia líquida de alta performance.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054741
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Dynamic of polycyclic aromatic hydrocarbons in soils treated with biochar. Repositório Alice
RESENDE, M. F. de; NOVOTNY, E. H.; BRASIL, T. F.; PEREIRA NETTO, A. D.; MADARI, B. E..
In recent years the interest in pyrogenic carbon for agricultural use (biochar, i.e. carbonized biomass for agricultural use) has sharply increased. However biochar contain dangerous compounds such as Polycyclic Aromatic Hydrocarbons (PAHs), many of them potentially carcinogenic and mutagenic. They are organic compounds formed from incomplete combustion of organic materials and are persistent pollutants. Therefore, PAHs concentrations and their dynamic must be evaluated in soils amended with biochar. For this, soil samples were collected in three experimental areas in different years (1, 3, 5 or 6) after the application of 0 (control) or 16 Mg ha-1 of biochar. This is the first report of PAHs persistence up to six years in soil treated with biochar. The...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Carbono pirogênico; Biochar; Hidrocarbonetos aromáticos policíclicos; Cromatografia gasosa; Espectrometria de massa.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054746
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