Low-cost magnetic activated carbon with excellent capacity for organic adsorption obtained by a novel synthesis route

Autor(es)

Costa, Larissa F. ; Ruotolo, Luis A. M. ; Ribeiro, Lucas S. ; Pereira, Marcio C. ; Camargo, Emerson R. ; Nogueira, Francisco G. E.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 9, n. 2, p. 9-pg., 2021-01-21.

Resumo

The aim of this study was the development of a new synthesis route employing a modified Pechini approach and soybean husk as carbon precursor to obtain low-cost magnetic-activated carbons to be employed for adsorption. The as-obtained adsorbents were magnetic and demonstrated a strong affinity towards phenolic compounds adsorption, since an uptake of 418 mg of caffeic acid (a model phenolic compound) per g of adsorbent was observed for the sample containing 1.3% Fe. The best adsorbent was also successfully employed to remove organics from a real wastewater from a coffee processing wastewater. In this case, the adsorption capacity (50 mg/g) was lower than the observed for caffeic acid due to the competition with other compounds present in the wastewater. Here, we demonstrated that the Fe content, phase formation, and graphitization degree have influence not only on the magnetic properties but also on the adsorption capacity. The novel synthesis procedure proposed in this work, besides facile and inexpensive, having the advantage of being environmentally friendly and viable for large-scale application since the magnetic field facilitates the solid-liquid separation. (AU)

• Processo FAPESP: 18/09723-9 - Fotoconversão de co2 em produtos com valor agregado: estudo experimental e teórico
• Beneficiário: Francisco Guilherme Esteves Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/12871-0 - Modificação do perfil da temperatura de transição de nanocompósitos termossensíveis
• Beneficiário: Lucas da Silva Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto