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Cost-effectiveness of arsenic adsorbents
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|Title: ||Cost-effectiveness of arsenic adsorbents|
|Authors: ||Kumar, Arun|
Bucciarelli-Tieger, Robin H.
Gurian, Patrick L.
|Issue Date: ||25-Nov-2009|
|Abstract: ||A great deal of effort has been devoted to the development of new arsenic removal technologies. This study assesses the cost-effectiveness of different technologies based on literature reports from different studies. Assessing performance based on literature reports is challenging because (1) different studies use different levels of background ions, (2) different studies use different arsenic concentrations, and (3) low-cost, low adsorption density materials must be compared with high-cost, high adsorption density materials. In this evaluation, technologies were compared using the cost of removing one gram of arsenic at an equilibrium arsenic concentration of 20 μg/L. Comparisons of different arsenic adsorbents indicate that the removal costs of the proprietary media (estimated at $2.3-$5.1/g arsenic removed) overlapped those of iron oxide-coated-sand (estimated at $3.3-4.2/g), which supports the current trend toward the use of metal hydroxide media. However, the close comparability of alternative approaches such as iron oxide-coated materials, zero-valent iron, etc. with them also suggests that continued research in a variety of directions is justified.|
|Appears in Collections:||Faculty Research and Publications (CAEE)|
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