Removal of Orthophosphate by Adsorption onto Activaed Magnesium Oxide in Aqueous Solution

被引：0
作者：
Xie, Fa-Zhi [1 ,2 ,3 ]
Liu, Gui-Jian [1 ]
Wu, Feng-Chang [3 ]
Li, Guo-Lian [1 ]
Zhu, Yuan-Rong [3 ]
机构：
[1] Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
[2] Anhui Univ Architecture, Sch Chem Engn & Mat Sci, Hefei 230022, Peoples R China
[3] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
来源：
ASIAN JOURNAL OF CHEMISTRY | 2012年 / 24卷 / 09期
关键词：
Orthophosphate; Activated magnesium oxide; Adsorption; PHOSPHATE REMOVAL; WASTE-WATER;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this study, the adsorption properties of an activated magnesium oxide powders via precipitation method for orthophosphate was examined. The effect of different parameters such as pH, contact time, adsorbate concentration and temperature was investigated. The adsorption kinetics data were best described by the pseudo-second-order rate equation and equilibrium was achieved after 40 min. The adsorption isotherm of the activated MgO was approximated by a Langmuir type and the maximum adsorption capacity was 95.24 mg/g. The thermodynamic parameters like Delta G, Delta H and Delta S for the adsorption of phosphate ions have been evaluated and it has been found that the reaction was spontaneous and endothermic in nature.
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收藏
页码：4238 / 4240
页数：3
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