Biosorption of lanthanum using sericin/alginate/polyvinyl alcohol beads as a natural cation exchanger in a continuous fixed-bed column system

Autor(es)

da Costa, Talles Barcelos ^[1] ; Carlos da Silva, Meuris Gurgel ^[1] ; Adeodato Vieira, Melissa Gurgel ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, Albert Einstein Ave, BR-13083852 Campinas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS; v. 627, OCT 20 2021.
• Citações Web of Science: 1

Resumo

Over the last years, the recovery of lanthanum from secondary sources have received high interest because of their importance in many industrial applications. In this study, we investigated the continuous biosorption of lanthanum in fixed-bed column system using sericin/alginate/polyvinyl alcohol-based beads. Effects of lanthanum solution flow rate, lanthanum inlet concentration, and regeneration cycles were investigated. At the flow rate of 30.0 mL/h and inlet concentration of 69.10 mg/L, the lowest mass transfer zone (4.00 cm) and highest amount of lanthanum biosorption at saturation (98.60 mg/g) were found. Over the four biosorption cycles, around 7000 mL of lanthanum solution with a removal efficiency at breakthrough of practically 100% were treated. Lanthanum desorption was successful with over 95% of the recovery in four regeneration cycles. Additionally, the breakthrough curves were well described by dual site diffusion phenomenological model. These results demonstrate that the sericin/alginate/polyvinyl alcohol-based beads are an effective biosorbent for the continuous recovery of lanthanum, paving the way for a separation system of rare-earths based on waste biomass. (AU)

• Processo FAPESP: 17/18236-1 - Recuperação de íons metálicos nobres e íons terras-raras presentes em soluções aquosas por bioadsorção em partículas de blenda de sericina e alginato
• Beneficiário: Melissa Gurgel Adeodato Vieira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/11353-8 - Centro Brasileiro de Pesquisa em Água (BWRC)
• Beneficiário: Lauro Tatsuo Kubota
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia