The adsorption of phosphate from an aquatic environment using metal-loaded orange waste

被引：198

作者：

Biswas, Biplob Kumar ^{[1
]}

Inoue, Katsutoshi ^{[1
]}

Ghimire, Kedar Nath ^{[1
]}

Ohta, Shingo ^{[1
]}

Harada, Hiroyuki ^{[1
]}

Ohto, Keisuke ^{[1
]}

Kawakita, Hidetaka ^{[1
]}

机构：

[1] Saga Univ, Dept Appl Chem, Saga 8408502, Japan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 312卷 / 02期

关键词：

phosphate; orange waste; metal-loaded gel; ligand substitution; adsorption;

D O I：

10.1016/j.jcis.2007.03.072

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Phosphate removal from an aquatic environment was investigated using La(III)-, Ce(III)- and Fe(III)-loaded orange waste. The adsorption isotherm, the kinetics of adsorption and the effect of pH on the removal of phosphate have been examined. The % removal of phosphate using La(III)- and Ce(III)-loaded orange waste gel increases with increasing pH within the range of 5-7 but decreases when the pH is increased beyond this range. The equilibrium sorption was observed to be in accordance with Langmuir type adsorption and the maximum adsorption capacity was evaluated as 13.94 mg P/g of dry gel for all the three types of gels. Kinetic studies revealed that 15 h is enough to reach equilibrium in batch experiments. Fixed bed sorption experiments confirmed the continuous phosphate adsorption and elution capability of such simply modified gels. Due to their low cost, availability and significantly high adsorption capability, metal-loaded SOW gels can be effectively employed for the removal of phosphate from water. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：214 / 223

页数：10

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2-4