Abstract
Algal Turf Scrubbers (ATS) are designed to remediate polluted waters where wastewater and agricultural runoff have caused eutrophication and the non-point source of excess nutrients cannot be determined. These ATS systems improve water quality by encouraging algal growth on flow-way surfaces rather than forming harmful blooms in open waters. Excessive nutrients from the water accumulate in the flow-way’s lawn of algae, and unless the algal biomass is repurposed, it is discarded in landfills as waste. In this article, we outline a simple methodology to utilize waste algal biomass as a novel source of clay. Raw algal waste contains minerals which can be used as a sustainable and more environmentally-friendly alternative to industrially-mined clays. When algae-based clay sculptures are kiln fired, they resemble terracotta brick in their color, durability, and porosity. In addition to the aesthetic and artistic potential of algae-based clay, this medium provides an excellent opportunity for educators to engage students with hands-on crafting activities while learning about eutrophication and environmental restoration of aquatic habitats.