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Biossorção de níquel e cromo de um efluente de galvanoplastia utilizando alga marinha pré-tratada em coluna

2009; Editora da Universidade Estadual de Maringá (Eduem); Volume: 31; Issue: 2 Linguagem: Inglês

10.4025/actascitechnol.v31i2.864

ISSN

1807-8664

Autores

Márcia Teresinha Veit, Edson Antônio da Silva, Márcia Regina Fagundes‐Klen, Célia Regina Granhen Tavares, Gilberto da Cunha Gonçalves,

Tópico(s)

Adsorption and biosorption for pollutant removal

Resumo

This work investigated the biosorption of chromium (III) and nickel (II) present in the effluent of a galvanoplasty plant using the pre-treated biomass of Sargassum filipendula seaweed. The column operation conditions were 8 g of biosorbent mass, 3.85 pH for the feed effluent, 30ºC temperature, 6 mL min.-1 flow rate, 7.12 meq L-1 initial chromium concentration and 3.66 meq L-1 initial nickel concentration. A mathematical model was used to represent the dynamics of biosorption of the metals in a fixed-bed column. The Langmuir multicomponent isotherm model (qm = 2.78 meq g-1, bCr = 0.85 L meq-1, bNi = 0.08 L meq-1) was used to represent the equilibrium data of the column and to simulate the biosorption dynamics of the ions. The simulation results showed that the mathematical model described satisfactory the complex binary biosorption of chromium and nickel in the effluent.

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