300 dpi: (d112-45.jpg)
640 pixels wide: (d112-45.jpg)
 Image Number D112-45 |
In a test of carbon’s ability to adsorb metals from water, student technician Bonnie Dillon (left) and chemist Isabel Lima run a copper ion solution (blue liquid) through a column of broiler manure-based carbon. When the copper is removed, the solution becomes clear.
Photo by Stephen Ausmus.
