Chemically activated phosphate slime as adsorbent for heavy metals removal from polluted water

被引：4

作者：

Rashed, Mohamed Nageeb ^{[1
]}

Mohamed, Aiman Rashed ^{[2
]}

Awadallah, Mohamed Ahmed ^{[2
]}

机构：

[1] Faculty of Science, Aswan University, Aswan

[2] EL Nasr Mining Company, Edfo, Aswan

来源：

International Journal of Environment and Waste Management | 2015年 / 16卷 / 02期

关键词：

Adsorption; Heavy metals; Phosphate slime; Pollution; Treatment;

D O I：

10.1504/IJEWM.2015.071289

中图分类号：

学科分类号：

摘要：

Phosphate slime was activated by chemical activators (0.5 M HNO3, 1 M HNO3, 2MHNO3, 0.5MHNO3: 0.5M NaOH, 1MHNO3: 1M NaOH, and 2MHNO3: 2M NaOH) to use as a cost-effective adsorbent for removal of heavy metals (Pb, Ni, Cd, Zn and Cu) from solution. The influence of pH, adsorbent dosage, contact time, initial metal concentration, and temperature on metals adsorption were investigated. Results revealed that slime phosphate activated by 2MHNO3 was an effective adsorbent for the removal of all metals from aqueous solution. Metal removal was affected by pH, adsorption dosage, initial metal concentration and solution temperature, while it shows less significant for effect of contact time. Metal adsorption was in a good correspondence with the Langmuir isotherm. The order for the maximum adsorption using the adsorbent was Zn (43.47 mg/g) > Cu (38.46 mg/g) > Ni (34.47 mg/g) > Pb (33.3 mg/g) > Cd (26.31 mg/g). Copyright © 2015 Inderscience Enterprises Ltd.

引用

页码：145 / 165

页数：20

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