Your browser doesn't support javascript.
loading
Harnessing carboxymethyl cellulose and Moringa oleifera seed husks for sustainable treatment of a multi-metal real waste.
Callisaya, Marleidy P; Fuentes, Dairon P; Braga, Victor H A; Finzi-Quintão, Cristiane M; Oliveira, Pedro V; Petri, Denise F S.
Afiliación
  • Callisaya MP; Institute of Chemistry, University of São Paulo, Brazil Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil. Electronic address: marleidy@usp.br.
  • Fuentes DP; Institute of Chemistry, University of São Paulo, Brazil Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil. Electronic address: dairon.pfuentes@usp.br.
  • Braga VHA; Institute of Chemistry, University of São Paulo, Brazil Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil. Electronic address: victor.hugo.braga@usp.br.
  • Finzi-Quintão CM; Department of Chemical Engineering, Federal University of São João del-Rei (UFSJ), Ouro Branco, Brazil. Electronic address: finzi@ufsj.edu.br.
  • Oliveira PV; Institute of Chemistry, University of São Paulo, Brazil Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil. Electronic address: pvolivei@iq.usp.br.
  • Petri DFS; Institute of Chemistry, University of São Paulo, Brazil Av. Prof. Lineu Prestes 748, 05508-000, São Paulo, Brazil. Electronic address: dfsp@iq.usp.br.
Environ Res ; 252(Pt 2): 118970, 2024 Jul 01.
Article en En | MEDLINE | ID: mdl-38642642
ABSTRACT
This study aimed to evaluate effective treatment strategies for laboratory waste with an initial pH of 1.0, containing Cr6+, Mn2+, Co2+, Fe3+, Ni2+, Cu2+, Zn2+, Sr2+, Hg2+, and Pb2+ ions, focusing on flocculation, precipitation, and adsorption techniques. The study utilized microparticles derived from Moringa oleifera seed husks (MS), cryogels of carboxymethyl cellulose (CMC), and hybrid cryogels combining CMC and MS (CMC-MS25 and CMC-MS50) as adsorbents. The optimal strategy involved raising the pH to 7 using NH4OH, leading to the partial precipitation of metal ions. The remaining supernatant was then passed through columns packed with the aforementioned adsorbents. Utilizing CMC-MS25 and CMC-MS50 adsorbents resulted in the simultaneous removal of over 90% of the targeted metal ions. The adsorption of Cu2+ ions onto the adsorbents was facilitated by electrostatic interactions between Cu2+ ions and carboxylate groups, as well as Cu-OH chelation, as confirmed by X-ray photoelectron spectroscopy. Under optimized conditions, the fixed-bed column adsorption capacity was determined as 88.2 mg g-1. The CMC-MS25 adsorbents proved reusable at least 5 times, with the recovered Cu2+ ions potentially suitable for other processes. The scalability and feasibility of producing these novel adsorbents suggest a promising, cost-effective solution for treating complex matrices and recovering high-value metals, as copper.
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: Semillas / Carboximetilcelulosa de Sodio / Moringa oleifera Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
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: Semillas / Carboximetilcelulosa de Sodio / Moringa oleifera Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos