Removal of fluoride from well water by modified iron oxides in a column system

被引：11

作者：

Garcia-Sanchez, J. J. ^{[1
,3
]}

Solache-Rios, M. ^{[1
]}

Alarcon-Herrera, M. T. ^{[4
]}

Martinez-Miranda, V. ^{[2
]}

机构：

[1] Inst Nacl Invest Nucl, Dept Quim, Mexico City 11801, DF, Mexico

[2] Univ Autonoma Estado Mexico, Fac Ingn, Ctr Interamer Recursos Agua, Toluca, Estado De Mexic, Mexico

[3] Univ Autonoma Estado Mexico, Fac Quim, Toluca 50000, Estado De Mexic, Mexico

[4] Ctr Invest Mat Avanzados CIMAV, Chihuahua 31109, Chih, Mexico

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 05期

关键词：

Fluoride; Corrosion products; Aluminum; Adsorption; Well water; AQUEOUS-SOLUTIONS; DRINKING-WATER; ADSORPTION; DEFLUORIDATION; IONS; BED; BIOSORPTION; EFFLUENT; ALUMINUM;

D O I：

10.1080/19443994.2014.980332

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The removal of fluoride from water by aluminum modified iron oxides (CP-Al) using a fixed-bed column adsorption system was investigated. Fixed-bed column experiments were carried out at different bed depths, and flow rate of 2mL/min. The Bohart-Adams model and the Thomas model were applied to the experimental results. The adsorption efficiency decreases as the bed depth increases. The adsorption capacity for fluoride ions by CP-Al is higher for fluoride aqueous solutions than well water. The regeneration was accomplished by eluting a 0.1M NaOH through the fluoride-loaded CP-Al bed. Scale-up and kinetic approach methods were used to calculate the design parameters from the breakthrough curves of fixed-bed column experiments. The parameters calculated from both methods indicated that they were suitable for fixed-bed column design.

引用

页码：2125 / 2133

页数：9

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