Adsorption of dyes methylene blue and yellow croconate on biopolymer chitin

被引：0
|
作者：
Longhinotti, E
Furlan, L
Laranjeira, MCM
deFavere, VT
Goncalves, NS
机构：
[1] UNIV SAO PAULO, INST QUIM, BR-01498970 SAO PAULO, BRAZIL
[2] UNIV FED SANTA CATARINA, DEPT QUIM, GRP PESQUISA QUITINAS & APLICACOES TECNOL, QUITECH, BR-88040900 FLORIANOPOLIS, SC, BRAZIL
来源：
QUIMICA NOVA | 1996年 / 19卷 / 03期
关键词：
chitin; dyes; adsorption;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Adsorption is an important field of study for heterogeneous catalysis, chromatographic analysis, dyeing of textiles and clarification of various effluents. The present investigation describes the adsorption of methylene blue, a cationic organic dye, and yellow croconate, an anionic organic dye, on chitin, The adsorption parameters were obtained from Langmuir isotherms utilizing a linear regression plot as the best fit to the data, The maximum adsorption capacities of chitin for methylene blue and yellow croconate are (2,60 +/- 0,20) and (7,69 +/- 1,54) mg.g(-1), respectively. The adsorption was found to be pH dependent. A possible mechanism involves the amino groups as active sites for adsorption.
引用
收藏
页码：221 / 224
页数：4
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