Studies on the removal of phosphate from drinking water by electrocoagulation process

被引：101
|
作者：
Vasudevan, Subramanyan [1 ]
Sozhan, Ganapathy [1 ]
Ravichandran, Subbiah [1 ]
Jayaraj, Jeganathan [1 ]
Lakshmi, Jothinathan [1 ]
Sheela, Sagayaraj Margrat [1 ]
机构：
[1] CSIR, Karaikkudi 630006, Tamil Nadu, India
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2008年 / 47卷 / 06期
关键词：
D O I：
10.1021/ie0714652
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The present study provides an electrocoagulation process for the removal of phosphate from drinking water using mild steel as the anode and stainless steel as the cathode. The studies were carried out as a function of pH, temperature, current density, and so forth, and the adsorption capacity was evaluated using both Langmuir and Freundlich isotherm models. The results showed that the maximum removal efficiency of 98% was achieved at a current density of 0.05 A center dot dm(-2) at a pH of 6.5. The adsorption of phosphate preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of adsorbed molecules. The adsorption process follows second-order kinetics. Temperature studies showed that adsorption was endothermic and spontaneous in nature.
引用
收藏
页码：2018 / 2023
页数：6
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