Analysis of adsorption isotherms of Cu(II), Ni(II), Pb(II) and Zn(II) by N-(3,4-dihydroxybenzyl) chitosan using nonlinear regression method.

被引：16

作者：

Klug, M

Sanches, MNM

Laranjeira, MCM

Favere, VT

Rodrigues, CA

机构：

[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Vale Itajai, FAQFAR, BR-88302202 Itajai, SC, Brazil

来源：

QUIMICA NOVA | 1998年 / 21卷 / 04期

关键词：

chitosan; nonlinear regression; isotherms;

D O I：

10.1590/S0100-40421998000400006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Adsorption of Cu(II), Ni(II)? Pb(ID and Zn(II) ions from aqueous solutions by N-(3,4-dihydroxybenzyl) chitosan have been carried out, The Langmuir (L), Freundlich (F), Langmuir - Freundlich (LF), Redlich-Peterson (RP) and Toth (T) adsorption isotherms models have been applied to fit the experimental data, Nonlinear regression computational program "Enzefitte", which is a library of the more commonly used adsorption isotherm equations for obtaining tabular outuput suitable for plotting theoretical of fitted isotherms, has been used to estimate the adsorption parameters, These parameters were used to calculate the amount adsorbed q(calc.), a function of concentration (C).

引用

页码：410 / 413

页数：4

共 56 条

[31]

LOEWENSCHUSS H, 1964, TALANTA, V11, P1399

[32] ANALYTICAL STUDIES AND APPLICATIONS OF FERROIN TYPE CHROMOGENS IMMOBILIZED BY ADSORPTION ON A STYRENE-DIVINYLBENZENE COPOLYMER [J].