Microesferas de quitosana reticuladas com tripolifosfato utilizadas para remoção da acidez, ferro(III) e manganês(II) de águas contaminadas pela mineração de carvão

Química Nova

Rogério Laus²  Mauro C. M. Laranjeira²  Amarildo O. Martins²  Valfredo T. Fávere²  Rozângela C. Pedrosa¹  Jean C. Benassi¹  Reginaldo Geremias¹ 

[1] ,Universidade Federal de Santa Catarina Departamento de Química Florianópolis SC

关键词: chitosan-tripolyphosphate;    microspheres;    remediation;   

DOI  :  10.1590/S0100-40422006000100008

来源: SciELO

【 摘 要 】

Considerable attention has been paid to chitosan and derivatives as efficient adsorbents of pollutants such as metal ions and dyes in aqueous medium. Nevertheless, no report can be found on the remedial actions of chitosan microspheres crosslinked with tripolyphosphate to control acidity, iron (III) and manganese (II) contents in wastewaters from coal mining. In this work, chitosan microspheres crosslinked with tripolyphosphate were used for the neutralization of acidity and removal of Fe (III) and Mn (II) from coal mining wastewaters. The study involved static and dinamic methods. The neutralization capacity of the surface of the static system was 395 mmol of H3O+ per kilogram of microspheres, higher than that of the dynamic one (223 mmol kg-1). The removal of Fe(III) in wastewater was of 100% and that of Mn(II) was 90%.

【 授权许可】

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