Sorcao de chumbo numa silica modificada obtida da crisotila: aplicacao de isotermas/Sorption of lead on modified silica obtained from chrysotile: isotherms application

A silica was modified with three alcoxysilanes with different quantities of nitrogen, whose the silica obtained from chrysotile acid leaching. The modified silicas were applied in lead removal from aqueous solution, obtained the following capacities: 1.41, 0.78 e 0.60 mmol g super( -1) for the mater...

Full description

Saved in:
Bibliographic Details
Published in:Comunicata Scientiae 2010-01, Vol.1 (1), p.15-15
Main Authors: Filho, Edson Cavalcanti da Silva, tes, Antonio Wuiston Martins, Reis, Luizangela da Silva, Santos, Maria Rita de Morais Chaves, Santos Junior, Luiz de Sousa, da Fonseca, Maria Gardennia
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A silica was modified with three alcoxysilanes with different quantities of nitrogen, whose the silica obtained from chrysotile acid leaching. The modified silicas were applied in lead removal from aqueous solution, obtained the following capacities: 1.41, 0.78 e 0.60 mmol g super( -1) for the materials containing 3, 1 and 2 nitrogen in organic chains, respectively. The isotherms were adjusted using different models, and each material showed affinity to a model. The interactions were favorable and spontaneous from Freundlich model and Gibbs free energy, respectively.
ISSN:2179-9079
2177-5133