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Zero Valent Iron to Remove The Arsenic Contamination from Natural Ground Water: Batch and Column Experiment
Abstract Groundwater with high levels of arsenic has received much attention in some Asian countries due to its massive environmental alarm. Groundwater flowing throughout As-rich geologic stratum may become contaminated with high concentrations of toxic As, which can make its way into private and public water supply wells. So it is urgently needed to overcome the silent arsenic disaster to feed arsenic free drinking water to the people. Presently, zero valent iron (ZVI) is to be studied as an effective tool for cleanup of groundwater containing heavy metals. Thus, it has special attention due to its high adsorption capacity and strong affinity to remove arsenic from contaminated groundwater. This paper highlights the burgeoning use of zero valent iron for mitigation of arsenic from groundwater. A series of both batch and column experiments were conducted to evaluate arsenic removal capacity by ZVI with the effect of pH, Eh and Dissolved Oxygen (DO) content. The results showed that more than 99% arsenic was removed in both batch and column experiment. In column experiment, efficient removal of arsenic was observed concentrations below the limit of 10 μg /L (WHO&s Standard) in the treated waters. Arsenic removal capacity of zero valent iron was determined to be 2.5 mg As/g ZVI.
Zero Valent Iron to Remove The Arsenic Contamination from Natural Ground Water: Batch and Column Experiment
Abstract Groundwater with high levels of arsenic has received much attention in some Asian countries due to its massive environmental alarm. Groundwater flowing throughout As-rich geologic stratum may become contaminated with high concentrations of toxic As, which can make its way into private and public water supply wells. So it is urgently needed to overcome the silent arsenic disaster to feed arsenic free drinking water to the people. Presently, zero valent iron (ZVI) is to be studied as an effective tool for cleanup of groundwater containing heavy metals. Thus, it has special attention due to its high adsorption capacity and strong affinity to remove arsenic from contaminated groundwater. This paper highlights the burgeoning use of zero valent iron for mitigation of arsenic from groundwater. A series of both batch and column experiments were conducted to evaluate arsenic removal capacity by ZVI with the effect of pH, Eh and Dissolved Oxygen (DO) content. The results showed that more than 99% arsenic was removed in both batch and column experiment. In column experiment, efficient removal of arsenic was observed concentrations below the limit of 10 μg /L (WHO&s Standard) in the treated waters. Arsenic removal capacity of zero valent iron was determined to be 2.5 mg As/g ZVI.
Zero Valent Iron to Remove The Arsenic Contamination from Natural Ground Water: Batch and Column Experiment
Abedin, M. A. (author) / Katsumi, Takeshi (author) / Invui, Toru (author) / Kamon, Masashi (author)
Advances in Environmental Geotechnics ; 515-520
2010-01-01
6 pages
Article/Chapter (Book)
Electronic Resource
English
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