| Texto completo | |
| Autor(es): |
Ramos, Bianca de Paula
[1]
;
Perez, Isadora Dias
[1]
;
Aliprandini, Paula
[2]
;
Boina, Rosane Freire
[3]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Univ Campinas UNICAMP, Sch Chem Engn, Lab Optimizat Design & Adv Control, BR-13083852 Campinas, SP - Brazil
[2] Univ Sao Paulo, Dept Chem Engn, Lab Recycling Waste Treatment & Extract, BR-05508080 Sao Paulo, SP - Brazil
[3] Sao Paulo State Univ UNESP, Sch Technol & Sci, Lab Water Wastewater & Reuse, BR-19060900 Presidente Prudente, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Environmental Science and Pollution Research; JAN 2022. |
| Citações Web of Science: | 0 |
| Resumo | |
Among the low-cost adsorbent are agricultural residues, which can be used in natura or modified forms. This work evaluated the adsorption of Ni2+, Cu2+, and Cr3+ in mono- and multi-component aqueous solutions using passion fruit peels in natura (Nat-PF) and physicochemically modified (Mod-PF). The adsorption was investigated by kinetic and isotherm models. A comparative investigation was conducted to analyze the effect of the experimental conditions by statistical test, adsorption capacity ratio, selectivity of adsorbate, and distribution coefficient. In both adsorbents, the process occurs in monolayer by chemosorption. Equilibrium was reached after 30 min, with highest adsorption capacity for Cu2+ as 0.495 mg g(-1), for Cr3+ as 0.483 mg g(-1), and for Ni2+ as 0.464 mg g(-1). The adsorption in Mod-PF was less affected in multi-component solutions, reducing the adsorption capacity by 0.06-0.15 times when compared to monocomponent solutions, while in Nat-PF a reduction of more than half of adsorption capacity was obtained. The modifications imposed on the biomass led to a change in its adsorptive selective, being Cr3+ > Cu2+ > Ni2+ for Nat-PF and Cu2+ > Ni2+ > Cr3+ for Mod-PF. (AU) | |
| Processo FAPESP: | 19/11353-8 - Centro Brasileiro de Pesquisa em Água (BWRC) |
| Beneficiário: | Lauro Tatsuo Kubota |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia |
| 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 |