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 different studies use different levels of background
ions, different studies use different arsenic concentrations, and 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. Includes 24 references, tables, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 520 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/01/2008 |
