Treatment of acidic dyes solutions by adsorption in soybean meal - doi: 10.4025/actascitechnol.v34i1.10434

• Autor(a) principal: Chiarello, Luana Marcele
• Data de Publicação: 2011
• Outros Autores: Barcellos, Ivonete Oliveira, Spengler, Gabriela, Roza, Davi Eduardo
• Tipo de documento: Artigo
• Idioma: eng; por
• Título da fonte: Acta scientiarum. Technology (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/10434
• topic: wastewater treatment; acid textile dyes; soybean meal; Química

In this study, we tested the potential use of a natural sorbent based on soybean meal from oil extraction in the treatment of solutions containing the acid dyes: yellow Erionyl RXL, navy blue Erionyl R and red Erionyl A-3B, used to dye polyamide fibers. To that end, adsorption studies were performed under different conditions of temperature, adsorbent concentrations, pH values, and color mixes (two- and three-color) on dye solutions produced in laboratory. Soybean meal showed great ability to remove color, especially in solutions with pH 4 and 6 at 60°C and containing 10 g L-1 of adsorbent. Considering that values of adsorption efficiency ranged between 74 and 99%, depending on the dye and treatment conditions, soybean meal proved to be an alternative material for the adsorption of acidic dyes.