2004
DOI: 10.1016/s0143-7208(03)00140-2
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Adsorption of anionic dyes in acid solutions using chemically cross-linked chitosan beads

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Cited by 637 publications
(331 citation statements)
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“…The strong electrostatic interaction between the -NH 3 + groups and dye anions can be used to explain the sorption mechanism. 33 The difference in the degree of adsorption may also be attributed to the chemical structure of each dye. 34 On chitosan, adsorption of dye molecules is proposed to take place in two steps: first the dye is transferred from the solution to the surface; the last stage is related to the diffusion of the dye within the pores of the material, binding the pores and capillary spaces.…”
Section: Adsorption Isothermsmentioning
confidence: 99%
“…The strong electrostatic interaction between the -NH 3 + groups and dye anions can be used to explain the sorption mechanism. 33 The difference in the degree of adsorption may also be attributed to the chemical structure of each dye. 34 On chitosan, adsorption of dye molecules is proposed to take place in two steps: first the dye is transferred from the solution to the surface; the last stage is related to the diffusion of the dye within the pores of the material, binding the pores and capillary spaces.…”
Section: Adsorption Isothermsmentioning
confidence: 99%
“…It is a popular anionic diazo dye used in many industries (Purkait et al 2007). It is highly water soluble and has been applied in the textile, printing, dyeing, paper, rubber, and plastics industries (Chiou et al 2004). In addition, CR possesses a very stable chemical structure, which makes it difficult to remove from wastewater (Wang and Wang 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Os banhos de tingimento foram preparados com monocromias (um único coadsorventes, e diferentes técnicas de descoloração vem sendo pesquisadas [2][3][4][5] . Adsorventes alternativos para remoção de cor como cinza do bagaço de cana [6] , amido de milho [7] , material carbonáceo produzido por tratamento em microondas de grãos de café [8] e quitosana [9][10][11][12] têm sido estudados. A utilização de blendas contendo quitosana para remoção de corantes de efluentes têxteis, visando à reutilização dos mesmos em processos de tingimento, é um método relativamente novo e com poucas referências anteriores [9,13,14] .…”
Section: Produção De Rejeitos De Tingimento Contendo Corantes áCidosunclassified
“…A quitosana vem sendo estudada por seu alto poder de adsorção de corantes, íons metálicos, proteínas e outros [9][10][11][12] . O comportamento da adsorção da quitosana em soluções ácidas aquosas, se deve no mínimo a dois fatores.…”
Section: Determinação Da Eficiência Dos Tratamentos Dos Rejeitosunclassified