Your browser doesn't support javascript.
loading
Adsorption of rare earth elements on a magnetic geopolymer derived from rice husk: studies in batch, column, and application in real phosphogypsum leachate sample.
Dos Reis, Glaydson Simões; Srivastava, Varsha; Taleb, Manal F Abou; Ibrahim, Mohamed M; Dotto, Guilherme Luiz; Rossatto, Diovani Leindecker; Oliveira, Marcos Leandro Silva; Silva, Luis Felipe Oliveira; Lassi, Ulla.
Afiliación
  • Dos Reis GS; Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden.
  • Srivastava V; Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden.
  • Taleb MFA; Research Unit of Sustainable Chemistry, Faculty of Technology, University of Oulu, 90014, Oulu, Finland.
  • Ibrahim MM; Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, 11942, Al-Kharj, Saudi Arabia.
  • Dotto GL; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, 21944, Taif, Saudi Arabia.
  • Rossatto DL; Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil. guilherme_dotto@yahoo.com.br.
  • Oliveira MLS; Research Group On Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-7, Santa Maria, RS, 97105-900, Brazil.
  • Silva LFO; Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia.
  • Lassi U; Universidad De La Costa, Calle 58 # 55-66, 080002, Barranquilla, Atlántico, Colombia.
Environ Sci Pollut Res Int ; 31(7): 10417-10429, 2024 Feb.
Article en En | MEDLINE | ID: mdl-38200192
ABSTRACT
There is a growing need to develop new strategies for rare earth element (REE) recovery from secondary resources. Herein, a novel approach to utilize biogenic silica (from rice husk) and metakaolin was employed to fabricate magnetic geopolymer (MGP) by incorporating metallic iron. The fabricated MGP adsorbent material was used to uptake Ce3+, La3+, and Nd3+ from synthetic solutions and real phosphogypsum leachate in batch and column modes. The MGP offers a negatively charged surface at pH above 2.7, and the uptake of REEs rises from pH 3 to 6. The kinetic study validated that the kinetics was much faster for Nd3+, followed by La3+ and Ce3+. A thermodynamic investigation validated the exothermic nature of the adsorption process for all selected REEs. The desorption experiment using 2 mol L-1 H2SO4 as the eluent demonstrated approximately 100% desorption of REEs from the adsorbent. After six adsorption-desorption cycles, the MGP maintained a high adsorption performance up to cycle five before suffering a significant decrease in performance in cycle six. The effectiveness of MGP was also assessed for its applicability in recovering numerous REEs (La3+, Ce3+, Pr3+, Sm3+, and Nd3+) from real leachate from phosphogypsum wastes, and the highest recovery was achieved for Nd3+ (95.03%) followed by Ce3+ (86.33%). The operation was also feasible in the column presenting suitable values of the length of the mass transfer zone. The findings of this investigation indicate that MGP adsorbent prepared via a simple route has the potential for the recovery of REEs from synthetic and real samples in both batch and continuous operations modes.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Oryza / Sulfato de Calcio / Metales de Tierras Raras Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósforo / Oryza / Sulfato de Calcio / Metales de Tierras Raras Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Alemania