Bayer Electrofilter Fines as Potential Se(VI) Adsorbents

被引：8

作者：

Ayala, Julia ^{[1
]}

Fernandez, Begoa ^{[1
]}

机构：

[1] Univ Oviedo, Lab Met, Escuela Minas, Oviedo 33004, Spain

来源：

JOM | 2015年 / 67卷 / 11期

关键词：

IRON-OXIDES; ADSORPTION MECHANISMS; SELENIUM; SORPTION; REMOVAL; SELENATE; SULFATE; SE(IV); WATER; IONS;

D O I：

10.1007/s11837-015-1616-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Removal of Se(VI) from an aqueous solution under different conditions was investigated using Bayer electrofilter fines (BEFs), a waste from alumina production, as an adsorbent. Adsorption selenate was studied using batch adsorption experiments as a function of pH (2-12), contact time (0.08-30 h), adsorbent concentration (4-80 g/L), initial selenium concentration (5-203 mg/L), and ionic strength (0-0.1 M NaCl). The results showed that adsorption was significantly affected by pH Se(VI) having the highest affinity for BEFs at pH 3. Sorption Se(VI) reached equilibrium in 4 h. Increasing ionic strength decreased selenate sorption. The adsorption of Se(VI) onto BEFs was found to fit the Langmuir isotherm. Maximum selenium uptake values were calculated as 2.3613 mg/g and 1.5608 mg/g when using adsorbent concentrations of 20 g/L and 40 g/L, respectively.

引用

页码：2727 / 2732

页数：6

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