2005
DOI: 10.1016/j.jcis.2004.11.031
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Natural vermiculite as an exchanger support for heavy cations in aqueous solution

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Cited by 105 publications
(38 citation statements)
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“…Chitosan is an adsorbent that combines low cost production, easy regeneration and higher selectivity concerning heavy metal ions (FONSECA et al, 2005). It has proved to be effective as a chelating agent of the copper ions, especially on the powder form, presenting better performance than other comercial chelating agents (NGAH & ISA, 1997).…”
Section: Introductionmentioning
confidence: 99%
“…Chitosan is an adsorbent that combines low cost production, easy regeneration and higher selectivity concerning heavy metal ions (FONSECA et al, 2005). It has proved to be effective as a chelating agent of the copper ions, especially on the powder form, presenting better performance than other comercial chelating agents (NGAH & ISA, 1997).…”
Section: Introductionmentioning
confidence: 99%
“…Entre as argilominerais, a vermiculita possui a maior capacidade de troca catiônica (CTC), com valores registrados na faixa de 100 a 150 meq/100 g (Grim, 1968). Após rápido aquecimento, a vermiculita expande, perdendo moléculas de água e adquirindo propriedades bastante interessantes, como maior CTC, inércia química, leveza e refratariedade (Franco et al, 2010;Machado et al, 2006 Fonseca et al (2005). Este estudo visa explorar o processo adsortivo binário de íons cobre e zinco em vermiculita expandida brasileira, através de sistema dinâmico de leito fixo em coluna, com diferentes vazões para obtenção de curvas de ruptura e dos parâmetros de eficiência: quantidade total e útil de metal adsorvido, zona de transferência de massa e porcentagem total de remoção.…”
Section: Introductionunclassified
“…Therefore, many types of adsorption materials have been developed to remove Co 2+ from aqueous solution. These materials include vermiculite [4], zeolite [5], sepiolite [6], kaolinite [7], and Chitosan-aluminium oxide [8]. In addition, the Chitosanaluminium oxide material was also used to remove Zn 2+ from aqueous solution [9].…”
Section: Introductionmentioning
confidence: 99%