Data/hora: 05/06/2024 10:42:37

Provedor de dados: | 1
País: | Brazil
Título: | Extractant efficiency in the solubilization of alternative sources of potassium
Autores: | Reis, Daniele Nogueira dos; van Straaten, Peter; Furtini Neto, Antonio Eduardo; Bittar, Sheila Maria Bretas; Curi, Nilton.
Data: | 2016-06-24
Ano: | 2016
Palavras-chave: | Minerals; Soluble K; Fertilizers; Powdered rock.
Resumo: | Knowledge of a rock’s composition allows for inferences regarding several properties, ranging from its physical characteristics to its solubility. This study aimed to evaluate the use of different extractants to solubilize the K present in rocks as a potential source of nutrients and the effects of extractant contact time and temperature on rock solubilization. Samples of two rocks and a mineral concentrated from a granitic rock were treated with ammonium dihydrogen phosphate (NH4(H2PO4)), calcium dihydrogen phosphate (Ca(H2PO4)2), sodium hydroxide (NaOH) and water (control). Sample-extractant treatments were performed using a water bath shaker at temperatures of 25 and 50°C for periods of 3, 7, 10, 20, and 30 days. The amounts of K extracted from rocks using the extractants were in the following order: NH4H2PO4&gt;Ca(HPO4)2&gt;NaOH&gt;water. The sequence of K release (ppm) based on the rocks studied was as follows: nepheline syenite&gt;green banded argillite&gt;concentrated biotite. Increasing the extractant contact time and temperature enhanced the solubilized K content.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28457

10.4025/actasciagron.v38i3.28457

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28457/pdf
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; v. 38, n. 3 (2016); 397-406

Acta Scientiarum. Agronomy; v. 38, n. 3 (2016); 397-406

1807-8621

1679-9275