When heavy metals leach out of Ohio’s abandoned coal mines, the sulfide minerals acidify the water and turn streams into sites of slimy toxic sludge, killing fish and destroying ecosystems. Ohio University engineer Dr. Guy Riefler, whose research focuses on acid mine drainage, experimented with salvaging useable pigment from the mine runoff, which turns bright colors when exposed to oxygen. In order to discern “good” pigment from bad, he collaborated with John Sabraw, an artist and associate professor of art at Ohio University, blending the arts and sciences together to sustainably develop new types of paint.
Commercial paints, which are mostly exported from China, are created by mixing scrap metal with chemicals; a process that mimics the same chemical reaction that naturally occurs in Ohio’s acid drainage-affected waterways. By taking metal-laden water samples from Ohio’s damaged streams, Sabraw found that a rich range of colors can be extracted from the iron ore (ferrous oxide): “anything from a mustardy yellow all the way to an incredibly rich, deep, deep almost-black brown.”
These paints are also safe to produce and use. Sabraw, who aims to use sustainable materials and methods in his artwork, has used these colorful pigments to create beautiful, organic forms in his paintings inspired by the natural landscape of trees, streams, and landscapes.
Riefler and Sabraw’s ultimate goal is to bring their sustainable paints to market in a local, sustainably-sourced business venture that would fund cleanup for the polluted streams – and it may even create a few local jobs in the process.
Images © John Sabraw, others courtesy of Wikimedia Commons