Electrochemical Fencing of Cr(VI) from Industrial Wastes to Mitigate Ground Water Contamination

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• 作者：N. Shukla ; M. K. Harbola ; K. Sanjay…
• 关键词：Electrochemical fencing ; Electroremediation ; Ground water contamination ; Solid wastes ; Chromium (VI)
• 刊名：Transactions of the Indian Institute of Metals
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：70
• 期：2
• 页码：511-518
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Metallic Materials; Materials Science, general; Tribology, Corrosion and Coatings;
• 出版者：Springer India
• ISSN：0975-1645
• 卷排序：70

文摘

Indiscriminate dumping of solid industrial wastes and the consequent ground water contamination by heavy metals such as Cr(VI) is a major environmental concern. Electrochemical fencing, an extension of electroremediation, appears to be a viable technique for impeding the vertical transport of heavy metals, dissolved in rain water, through the soil to mitigate ground water contamination. Preliminary experiments showed that electrochemical fencing captured 50% of the Cr(VI) dissolved in rain water. However, this percentage can be increased by changing, for example, electrode configuration or electrolyte composition. A novel mathematical model, that calculates the trajectory of Cr(VI) ions, was developed to provide practicing engineers a simple methodology to design and implement real-life electrochemical fencing systems. Because of its versatility, electrochemical fencing can be used to capture a wide variety of carcinogenic heavy metals, or even water soluble organic molecules, and hence warrants further investigation.