| Texto completo | |
| Autor(es): |
Ramos, Bianca de Paula
[1]
;
Perez, Isadora Dias
[1]
;
Wessling, Matthias
[2]
;
Boina, Rosane Freire
[3]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Campinas UNICAMP, Fac Chem Engn, Lab Optimizat Design & Adv Control, Albert Einstein Ave 500, BR-13083852 Campinas, SP - Brazil
[2] Rheinisch Westfalaliche Tech Hsch Aachen, Leibniz Inst Interact Mat, DWI, Forckenbeck Str 50, D-52074 Aachen - Germany
[3] Sao Paulo State Univ UNESP, Fac Sci & Technol, Lab Water Wastewater & Reuse, Roberto Simonsen St 305, BR-19060900 Presidente Prudente, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF SUSTAINABLE METALLURGY; v. 7, n. 3 JUL 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Electroplating wastewaters are composed of a mixture of metallic ions. The process commonly applied to treat these residues generates a large amount of toxic sludge and does not allow metal recovery. In this context, the use of an adsorption technique to separate the metallic ions from the wastewater and recuperate it by desorption was proposed. For the process to be more environmentally interesting, a solid residue from the agro-industry was used as an adsorbent: the powder of passion fruit shells. The adsorbent was characterized by SEM, TEM, BET, FTIR, and pH-PZC. The adsorption experiments were carried out in monoelementary solution of Ni2+ , Cu2+ , and Zn2+ -to analyze the fit to the kinetic and isotherms models-and in the multi-elementary electroplating wastewater. The desorption was evaluated wo- and multi-elementary solutions, reaching an adsorption capacity of 44.82 mg g(-1) for Ni2+, 1.10 mg g(-1) for Cu2+, and 0.20 mg g(-1) for Zn2+ on the wastewater. The three ions showed a better fit to the Freundlich isotherm model. Zn2+ was adjusted to pseudo-second order, Cu2+ to Elovich model, and Ni2+ to pseudo-first order. It was possible to recover more than 99% of Zn2+ and Ni2+ , and 45% of Cu2+ using acid eluent. Therefore, the method proposed in this study was effective to recover the metallic ions in electroplating wastewater, opening up the possibility of treating these wastes in an eco-friendly way. {[}GRAPHICS] . (AU) | |
| Processo FAPESP: | 15/09170-1 - Biossorção de metais em casca de maracujá amarelo |
| Beneficiário: | Bianca de Paula Ramos |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 16/22976-8 - Biossorção de íons metálicos em efluentes de galvanoplastia |
| Beneficiário: | Bianca de Paula Ramos |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica |