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Cotton Fiber/ZrO 2 , A New Material for Adsorption of Cr(VI) Ions in Water
Author(s) -
Muxel Alfredo Alberto,
Gimenez Sonia Maria Nobre,
de Souza Almeida Flaveli Aparecida,
da Silva Alfaya Rení Ventura,
da Silva Alfaya Antonio Alberto
Publication year - 2011
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000165
Subject(s) - adsorption , zirconium , fiber , ion exchange , ion , chemistry , langmuir , natural fiber , langmuir adsorption model , inorganic chemistry , kinetic energy , materials science , nuclear chemistry , organic chemistry , physics , quantum mechanics
The natural cotton fiber was used to synthesize an anion exchange, containing ZrO 2 film on its surface, NCFZC (natural cotton fiber/ZrO 2 composite). This anion exchanger was produced by the reaction of the zirconium oxychloride and hydroxyl groups on surface of the natural cotton fiber. The material was used for Cr(VI) ions adsorption studies. Adsorption equilibrium time and optimum pH for Cr(VI) adsorption were found to be 6 h and 4.0, respectively. The Langmuir and Temkin isotherms were used to models adsorption equilibrium data. The adsorption capacity of NCFZC was found to be 1.33 mmol/g. Kinetic studies showed that the rate of adsorption of Cr(VI) on NCFZC obeyed a pseudo‐second‐order kinetic model.