SÍNTESE DE HIDROCARVÃO A PARTIR DA CASCA DO FRUTO DE BOCAIUVA E SUA APLICAÇÃO NA REMOÇÃO DE DIURON DE ÁGUA CONTAMINADA

• Autor(a) principal: Magalhães, Tairine Fernanda da Silva
• Data de Publicação: 2022
• Outros Autores: Barbosa, Aline Gonçalves, Golin, Rossean, Terezo, Ailton José, Vasconcelos, Leonardo Gomes de, Morais, Eduardo Beraldo de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Nativa (Sinop)
• Texto Completo: https://periodicoscientificos.ufmt.br/ojs/index.php/nativa/article/view/13783
• topic: adsorção; cinética; modelos de isotermas; estudo termodinâmico

In this study, hydrochar was synthesized using bocaiuva fruit peel for application in diuron removal from contaminated water through adsorption. The influence of the initial pH of the solution, hydrochar concentration, contact time, and temperature on the adsorption process were evaluated. The pseudo-second order kinetic model and the Langmuir isotherm model provided the best fits to the adsorption data. The maximum adsorption capacity was estimated at 10.06 mg g-1, at pH 4.0 and 30 °C. The activation energy calculated by the Dubinin-Radushkevich isotherm model was 7.805 kJ mol-1, indicating that a physical process is responsible for the adsorption of diuron on hydrochar. The thermodynamic parameters (ΔH < 0 and ΔG > 0) suggested that the adsorption process is exothermic and not spontaneous. The results indicated that hydrochar could be an alternative adsorbent for removing diuron from water.