Data/hora: 14/06/2024 12:09:58

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 05/06/2020
Data da última atualização: | 16/08/2022
Autoria: | PARIS, E. C.; MALAFATI, J. O. D.; MUSETTI, H. C.; MANZOLI, A.; ZENATTI, A.; ESCOTE, M. T.
Afiliação: | ELAINE CRISTINA PARIS, CNPDIA.
Título: | Faujasite zeolite decorated with cobalt ferrite nanoparticles for improving removal and reuse in Pb2+ ions adsorption.
Ano de publicação: | 2020
Fonte/Imprenta: | Chinese Journal of Chemical Engineering, v. 28, n. 7, 2020.
Páginas: | 1884-1890
ISSN: | 1004-9541
DOI: | https://doi.org/10.1016/j.cjche.2020.04.019
Idioma: | Inglês
Conteúdo: | Water pollution caused by heavy metals ions has been gaining attention in recent years, increasing the interest in the development of methodologies for their efficient removal focusing on the adsorption process for these purposes. The current challenge faced by adsorption processes is the adequate adsorbent immobilization for removal and reuse. Thus, the present work aimed at producing a faujasite zeolite nanocomposite decorated with cobalt ferrite nanoparticles for Pb2+ ions adsorption in an aqueous medium improving magnetic removal and reuse. As a result, a high surface area (434.4 m2·g−1) for the nanocomposite and an 18.93 emu·g−1 saturation magnetization value were obtained, indicating magnetic removal in a promising material for adsorption process. The nanocomposite regeneration capacity evaluated by magnetic recovery after 24 h suspension presented a high Pb2+ ion adsorptive capacity (98.4%) in the first cycle. Around 98% of the Pb2+ ions were adsorbed in the second cycle. In this way, the synthesized faujasite:cobalt ferrite nanocomposite reveals itself as a promising alternative in adsorption processes, aiming at a synergic effect of FAU zeolite high adsorptive activity and the cobalt ferrite nanoparticles magnetic activity, allowing for adsorbent recovery from the aqueous medium via magnetic force and successive adsorptive cycles.
Palavras-Chave: | Cobalt ferrite; Faujasite zeolite; Magnetic nanocomposite.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (17551-1) - UPC - AP - DD - PROCI.20/040 -  - 2020/045 - DIS