| Full text | |
| Author(s): |
Dias Costa, Camila Stefanne
;
Mello Queiroz, Bruno Galdeano
;
Landers, Richard
;
Carlos da Silva, Meuris Gurgel
;
Adeodato Vieira, Melissa Gurgel
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Environmental Science and Pollution Research; v. 26, n. 28, p. 11-pg., 2019-10-01. |
| Abstract | |
The alginate extraction residue (RES) from the Brazilian Sargassum filipendula was successfully employed as biosorbent in this binary equilibrium study, revealing a greater affinity and selectivity for Cr(III) than for Zn(II). Experimental results also revealed that the process is of endothermic nature and well adjusted by Langmuir-Freundlich binary model. The X-ray photoelectron spectroscopy (XPS) analysis revealed that coordination with hydroxyl groups of RES prevailed in Cr removal, followed by carboxyl-metal complexation. As far as Zn(II) is concerned, ion exchange with carboxylate groups of RES was the largest contributor. Nevertheless, scanning electron microscopy coupled with Fourier transform infrared spectroscopy indicated the participation of sulfate functions in a minor degree. (AU) | |
| FAPESP's process: | 14/04050-5 - Evaluation of the residue of the extraction of alginate from the seaweed Sargassum filipendula as bioadsorbent forremoval of toxic metals |
| Grantee: | Meuris Gurgel Carlos da Silva |
| Support Opportunities: | Regular Research Grants |