Adsorção de Pb(II) utilizando adsorvente composto por montmorilonita e dolomita
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 requi...
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| Materialtyp: | Dissertação |
| Språk: | por |
| Publicerad: |
Universidade Federal do Rio Grande do Norte
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| Länkar: | https://repositorio.ufrn.br/jspui/handle/123456789/12730 |
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| Sammanfattning: | 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 |
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