An expensive, industrial Bayoxide powder is typically used in filters to remove arsenic from drinking water. For this analysis, local powders from a hardware store in San Miguel de Allende will be subjected to batch incubation studies to determine which one most efficiently mimics the Bayoxide powder and removes arsenic from solution. The most effective powder will then be used in filters that will be distributed to local communities around San Miguel de Allende, providing the residents with an inexpensive way to treat their contaminated drinking water.

This experiment will be completed at the end of May – early June. Stay tuned for results!

Picture above shows the seven powders that will be used in the batch study. From left to right the powders are as follows: Ferrihydrite powder, Goethite powder, unknown Ca-rich powder, Ti-powder, Titanium dioxide sand pack, Bayoxide E33HC, and Bayoxide E33.