Work

Modeling Controlled Potassium Release from Phlogopite in Solution: Exploring the Viability of using Crushed Phlogopitite Rock as an Alternative Potassium Source in Brazilian Soil

Year: 2013

Type: article

Abstract: The chemical and mineralogical properties of phlogopitite, a rock containing the mineral phlogopite, were studied aiming at employment as an alternative source of potassium. Mineralogical characterization of this rock was performed using X-ray diffractometry, X-ray fluorescence, scanning electron microscopy and infrared spectroscopy. According to the results, phlogopite contains approximately 82.6 g K2O kg-1 (ca. 9%). The kinetics involved in the release of the potassium ions from the mineral were examined using acidic solutions (nitric, citric, oxalic and Mehlich-1) and a salt solution (sodium tetraphenylboron, Na[B(C6H5)4]). The experimental results from the kinetic studies were used to determine the mathematical relationship between the concentration of potassium released and the reaction time.

Source: Journal of the Brazilian Chemical Society

DOI: 10.5935/0103-5053.20130173

Authors: Adriana de A. S. da Silva, João A. Sampaio, Adão B. da Luz, Sílvia C. A. França, Célia M. Ronconi

Institutions: Universidade Federal do Rio de Janeiro, Centro de Tecnologia Mineral

Language: English

Topic: Phosphorus and nutrient management

Subfield: Waste Management and Disposal

Field: Environmental Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $275

Funders: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Ministério da Ciência, Tecnologia e Inovação, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro