Made available in DSpace on 2014-12-17T14:07:00Z (GMT). No. of bitstreams: 1 ElidaNMGP_DISSERT.pdf: 266264 bytes, checksum: 55a4fffa9b1f2a291d7fc9168a9d61cd (MD5) Previous issue date: 2011-04-16 / The destructive impact of improper disposal of heavy metals in the environment increases as a direct result of population explosion, urbanization and industrial expansion and technological developments. Argil are potential materials for adsorption of inorganic and the pelletization of it is required for use in adsorptive columns of fixed bed. The low cost and the possibility of regeneration makes these materials attractive for use in the purification process, capable of removing inorganic compounds in contaminated aquatic environments. In this work was made pellets of a mixture of dolomite and montmorillonite by wet agglomeration, in different percentages. The removal of Pb (II) was investigated through experimental studies, and was modeled by kinetic models and isotherms of adsorption. The materials were characterized using the techniques of XRD, TG / DTA, FT-IR, and surface area by BET method. The results showed the adsorption efficiency of the contaminant by the composite material studied in synthetic solution. The study found that the adsorption follows the Langmuir model, and the kinetics of adsorption follows the model of pseudosecond order / O impacto destrutivo da disposi??o inadequada de metais pesados no meio ambiente aumenta como resultado direto da explos?o populacional, urbaniza??o e expans?o industrial e tecnol?gica. Argilas s?o potenciais materiais para adsor??o de compostos inorg?nicos e a pelletiza??o destes ? necess?ria para utiliza??o em colunas adsortivas de leito fixo. O baixo custo e a possibilidade de regenera??o fazem desses materiais um atrativo para a utiliza??o em processos de purifica??o, capazes de remover compostos inorg?nicos em ambientes aqu?ticos contaminados. Neste trabalho foram preparados pellets com mistura de montmorilonita e dolomita atrav?s da aglomera??o por via ?mida, em diferentes raz?es. A remo??o de Pb(II) foi investigada, atrav?s de estudos experimentais, e foi modelada segundo modelos de cin?tica e isotermas de adsor??o. Os materiais foram caracterizados atrav?s das t?cnicas de DRX, TG/DTA, FT-IR, e ?rea superficial pelo m?todo BET. Os resultados mostraram a efici?ncia adsortiva do contaminante estudado pelo material composto em solu??o sint?tica e foi verificado que a adsor??o segue o modelo de Langmuir e a cin?tica de adsor??o segue o modelo de pseudo-segunda ordem