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|Type:||Artigo de evento|
|Title:||Influence Of The System On Adsorption Of Pb(ii) And Cu(ii) By Rice Husks Ash: Kinetic Study|
De Almeida Neto A.F.
Da Silva M.G.C.
|Abstract:||Pb(II) and Cu(II) removal from aqueous solutions by rice husk ash was investigated using batch and fixed bed techniques, static and dynamic systems, respectively. The rice husks calcined at 500 °C showed higher potential for removing metals such as lead and copper. Batch experiments were performed at a constant temperature, adjusting the pH of the solution in contact with rice husk ash. Adsorption essays at fixed bed were also carried out according to a study of outflow determined with basis on results from mass transfer zone (MTZ). The single-component essays showed that both heavy metals have affinity to ash adsorptive sites. The maximum adsorption capacity didn't show significant changes in the dynamic system of fixed bed system compared to static batch. In the binary mixture (copper + lead) there is a greater affinity between the lead and RHA in batch, while in fixed bed copper presented higher removal. © 2011, AIDIC Servizi S.r.l.|
|Editor:||Italian Association of Chemical Engineering - AIDIC|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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