Pecan Nutshell as Biosorbent to Remove Toxic Metals from Aqueous Solution

被引：82

作者：

Vaghetti, Julio C. P. ^{[1
]}

Lima, Eder C. ^{[1
]}

Royer, Betina ^{[1
]}

Cardoso, Natali F. ^{[1
]}

Martins, Bruna ^{[1
]}

Calvete, Tatiana ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2009年 / 44卷 / 03期

关键词：

Biosorption; heavy metals; low-cost adsorbent; pecan nutshell; ATOMIC-ABSORPTION-SPECTROMETRY; ARAUCARIA-ANGUSTIFOLIA WASTES; LOW-COST ADSORBENTS; STATISTICAL DESIGN; HEAVY-METALS; SORPTION CAPACITY; BATCH CONDITIONS; FRUIT SHELL; ADSORPTION; BIOSORPTION;

D O I：

10.1080/01496390802634331

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present study we reported for the first time, the feasibility of pecan nutshell (PNS-Carya illinoensis) as an alternative biosorbent to remove Cr(III), Fe(III) and Zn(II) metallic ions from aqueous solutions. The ability of PNS to remove these metallic ions was investigated by using batch biosorption procedure. The effects, such as pH and the biosorbent dosage on the adsorption capacities of PNS were studied. Five kinetic models were tested, the adsorption kinetics being the better fitted one to the fractionary-order kinetic model. The equilibrium data were fitted to Langmuir, Freundlich, Sips, and Redlich-Peterson isotherm models. Taking into account a statistical error function, the data were best fitted to Sips isotherm models. The maximum biosorption capacity of PNS were 93.01, 76.59, and 107.9mgg-1 for Cr(III), Fe(III), and Zn(II), respectively.

引用

页码：615 / 644

页数：30

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