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Image Number D112-45

Caption for November/December 2011 Agricultural Research magazine article, "Carefully Unraveling the Intricacies of Biochar." A column filled with poultry litter-based activated chars is put to the test by chemist Isabel Lima (right) and Bonnie Dillon by letting a solution of copper ion pass through. The solution turns clear as the copper ions are absorbed by the activated chars.

Caption for July 2005 Agricultural Research magazine article, "The Ultimate Trash To Treasure: ARS Research Turns Poultry Waste into Toxin-grabbing Char." 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.

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