Actas de congresos
Lead And Chromium Biosorption By Pistia Stratiotes Biomass
Registro en:
Chemical Engineering Transactions. Italian Association Of Chemical Engineering - Aidic, v. 32, n. , p. 1045 - 1050, 2013.
19749791
10.3303/CET1332175
2-s2.0-84879219517
Autor
Lima L.K.S.
Pelosi B.T.
Silva M.G.C.
Vieira M.G.A.
Institución
Resumen
Biosorption using biological materials has been extensively studied as a promising technology to contain the environmental impacts caused by heavy metals. Among the alternative biosorbents evaluated macrophytes shows high affinity by metal ions. In addition, this kind of material are from renewable sources, biodegradable and easy to grow, supporting wide ranges of pH and temperature. Therefore, the aim of this study is to evaluate the performance of macrophyte Pistia stratiotes in Cr3+ and Pb2+ removal. Equilibrium isotherms data were fitted to Langmuir model and the maximum uptake capacities were 0.317 and 0.225 mmol.g-1 for Cr3+ and Pb 2+, respectively. In order to know the biosorption mechanism FT-IR analyses were performed for P. stratiotes before and after uptake of metal ions. The results showed different functional groups on the biomass surface and the ability of these groups bind with Cr+3 and Pb2+ ions in aqueous solution. Copyright © 2013, AIDIC Servizi S.r.l. 32
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