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2002 | 11 | 4 |

Tytuł artykułu

Adsorption of reactive dyes by modified chitin from aqueous solutions

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The adsorption of reactive dyes onto chitin (deacetylation degree = 5%) was investigated from aqueous solutions at pH 3. Ten reactive dyes were examined, including 5 dyes from the helactine group, 3 dyes from the polactine group and 2 dyes from the remazol group. The K and b constants were calculated from the Langmuir equation that assumes the presence of two sites of different nature. It was found that the dye adsorption on chitin in type I and II sites differed in both the adsorption affinity and maximum adsorption capacity. Based on the dimensionless separation factor RL it was found that the dye adsorption mechanism in type I sites was an ion exchange, whereas in the case of type II sites it was a physical adsorption. A correlation was found between dye adsorption on chitin and the number of sulfone groups in a dye molecule. However, neither molecular weight nor the number of aromatic rings was correlated with dye adsorption.

Wydawca

-

Rocznik

Tom

11

Numer

4

Opis fizyczny

p.315-323,fig.

Twórcy

  • University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
autor
autor
autor

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-article-f836b3c3-eb56-46ae-842a-bb087567a022
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