Application of Electrocoagulation Process Using Iron and Aluminum Electrodes for Fluoride Removal from Aqueous Environment
Application of Electrocoagulation Process Using Iron and Aluminum Electrodes for Fluoride Removal from Aqueous Environment
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DOI：
10.1155/2012/102629
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发表时间：
2012-01-01
影响因子：
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通讯作者：
Mahvi, Amir Hossein
中科院分区：
文献类型：
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作者：
Bazrafshan, Edris;Ownagh, Kamal Aldin;Mahvi, Amir Hossein
饮用水氟含量超标是导致氟骨症的主要原因。研究了铁电极和铝电极电凝聚法去除水中氟离子的能力。研究了氟离子浓度、pH值、外加电压和反应时间等因素对氟离子去除率的影响。通过将适量的氟化钠与去离子水混合来制备可变浓度（1、5和10 mg L-1）的氟化物溶液。还研究了初始溶液（3、7和10）的不同pH以测量它们对氟化物去除效率的影响。合成溶液的结果表明，最有效的去除氟的能力，可以达到在40 V的电位。此外，在10-40 V范围内，电位的增加提高了处理速率。除氟效果的比较表明，铁电极和铝电极的除氟效果相当。最后，可以得出结论，电凝聚法具有潜在的成本效益的去除水和废水中的氟。
Fluoride in drinking water above permissible level is responsible for human being affected by skeletal fluorosis. The present study was carried out to assess the ability of electrocoagulation process with iron and aluminum electrodes in order to removal of fluoride from aqueous solutions. Several working parameters, such as fluoride concentration, pH, applied voltage and reaction time were studied to achieve a higher removal capacity. Variable concentrations (1, 5 and 10 mg L-1) of fluoride solutions were prepared by mixing proper amount of sodium fluoride with deionized water. The varying pH of the initial solution (3, 7 and 10) was also studied to measure their effects on the fluoride removal efficiency. Results obtained with synthetic solution revealed that the most effective removal capacities of fluoride could be achieved at 40 V electrical potential. In addition, the increase of electrical potential, in the range of 10-40 V, enhanced the treatment rate. Also comparison of fluoride removal efficiency showed that removal efficiency is similar with iron and aluminum electrodes. Finally it can be concluded that the electrocoagulation process has the potential to be utilized for the cost-effective removal of fluoride from water and wastewater.