REMOVAL OF LEAD FROM AQUEOUS SOLUTION USING WASTE TIRE RUBBER ASH AS AN ADSORBENT

被引：58

作者：

Mousavi, H. Z. ^{[1
]}

Hosseynifar, A. ^{[1
]}

Jahed, V. ^{[1
]}

Dehghani, S. A. M. ^{[2
]}

机构：

[1] Semnan Univ, Coll Sci, Dept Chem, Semnan, Iran

[2] RIPI, Tehran, Iran

来源：

BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING | 2010年 / 27卷 / 01期

关键词：

Removal; Pb2+; Waste tire rubber ash; Isotherm; Kinetics; LOW-COST ADSORBENTS; FLY-ASH; HEAVY-METALS; RICE HUSK; ACTIVATED CARBONS; ADSORPTION; WATER; SORPTION; IONS; CADMIUM;

D O I：

10.1590/S0104-66322010000100007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The purpose of this study was to investigate the possibility of the utilization of waste tire rubber ash (WTRA) as a low cost adsorbent for removal of lead (II) ion from aqueous solution. The effect of different parameters (such as contact time, sorbate concentration, adsorbent dosage, of the medium and temperature) were investigated. The sorption process was relatively fast and equilibrium was reached after about 90 min of contact. The experimental data were analyzed by the Freundlich isotherm and the Langmuir isotherm. Equilibrium data fitted well with the Langmuir model with maximum adsorption capacity of 22.35 mg/g. The adsorption kinetics was investigated and the best fit was achieved by a first-order equation. The results of the removal process show that the Pb (II) ion adsorption on WTRA is an endothermic and spontaneous process. The procedure developed was successfully applied for the removal of lead ions in aqueous solutions.

引用

页码：79 / 87

页数：9

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