Boutique Biochars: Exploring Engineering Strategies to Increase Phosphate Adsorption
By Karen Hills
This is part of a series highlighting work by Washington State University (WSU) researchers through the Waste to Fuels Technology Partnership between the Department of Ecology and WSU during the 2017-2019 biennium.
Biochar is produced by pyrolysis of woody (technically, lignocellulosic) materials. By controlling the conditions under which it is produced, researchers can engineer biochar to be more effective for particular purposes. In previous articles, I explored work looking at the potential for biochar to draw down atmospheric carbon dioxide and increase water holding capacity in soils. Michael Aniayia (Figure 1) and his colleagues in the lab of Dr. Manuel Garcia-Perez at Washington State University, engineered biochar for a specific purpose – adsorbing phosphate, a nutrient that, because it is also common in wastewater and manure, can pollute waterways. Aniayia’s objective was to evaluate strategies for producing biochar in order to improve its ability to remove phosphate. Continue reading