Renata Nofal, Roberto R. de Avillez
Potassium is an essential ion for plant nutrition, typically supplied as chlorides and sulphates. The Brazilian demand for agricultural fertilizers necessitates the importation of potassium compounds, prompting interest in alternative sources. This study investigates the thermal decomposition of potassium alum dodecahydrate (KAl(SO4)2·12H2O) both with and without charcoal, a reducing agent. A novel mathematical model is proposed to describe weight loss over time for both processes. Thermogravimetric analyses (TGA) were performed under an inert nitrogen atmosphere at heating rates of 10, 15, and 20 °C min-1. The model demonstrates low computational time, with less than 1 second simulating 160 minutes of reaction, making it feasible for monitoring and controlling mass compositions in industrial applications. The findings contribute to the understanding of potassium recovery processes and offer insights into enhancing agricultural sustainability through effective potassium management.
@article{6f5655e3-69a1-410d-84a7-7ba840929043,
title={Experimental Investigation and Kinetic M},
author={Renata Nofal and Roberto R. de Avillez},
year={2026},
language={en}
}TY - JOUR TI - Experimental Investigation and Kinetic M AU - Renata Nofal AU - Roberto R. de Avillez PY - 2026 LA - en ER -
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