Abstract

This paper proposes the synthesis and functionalization of a low-cost mesoporous material from biomass ashes with the aim of obtaining a new adsorbent material, thereby recycling and transforming an environmental liability into a material with added value. Biomass ashes are an environmental liability, composed mainly of aluminosilicates, which have been modified with the help of a surfactant (Plumnic P-123) to model and modify its porous structure. The functionalization of the synthesized material was carried out with N, N-dimethylacetamide (DMAC) and glycine (GLY) in order to improve the adsorption capacity of the synthesized material. The materials obtained in this article were characterized by adsorption-desorption isotherms of N-2 at 77 K, X-ray fluorescence (XFR), elemental analysis (EA), X-Ray diffraction (XRD), Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoemission spectroscopy (XPS). The adsorption capacity of the synthesized matrices has been tested in batch and electrochemical systems. The surface areas obtained by the BET method were 18.49 m(2) g(-)(1) for pure ashes (CBT) and 22.84 m(2) g(-)(1) for modified ashes, and the adsorption capacities of Fe3+ ions were of about 80.49% for bare SC1, 83.27% for SC1-GLY and 95.41% for SC1-DMAC.