Aplicação de Zr/Ti-PILC no processo de adsorção de Cu(II), Co(II) e Ni(II) utilizando modelos físico-químicos de adsorção e termodinâmica do processo

Química Nova

Denis Lima Guerra²  Claudio Airoldi²  Vanda Porpino Lemos¹  Rômulo Simões Angélica¹  Rúbia Ribeiro Viana¹ 

[1] ,Universidade Estadual de Campinas Instituto de Química Departamento de Química InorgânicaCampinas SP ,Brasil

关键词: adsorption isotherms;    metals;    Zr/Ti -pillared clay;   

DOI  :  10.1590/S0100-40422008000200031

来源: SciELO

【 摘 要 】

The aim of this investigation is to study how Zr/Ti-PILC adsorbs metals. The physico-chemical proprieties of Zr/Ti-PILC have been optimized with pillarization processes and Cu(II), Ni(II) and Co(II) adsorption from aqueous solution has been carried out, with maximum adsorption values of 8.85, 8.30 and 7.78 x10-1 mmol g-1, respectively. The Langmuir, Freundlich and Temkin adsorption isotherm models have been applied to fit the experimental data with a linear regression process. The energetic effect caused by metal interaction was determined through calorimetric titration at the solid-liquid interface and gave a net thermal effect that enabled the calculation of the exothermic values and the equilibrium constant.

【 授权许可】

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