It was the first full-scale test of a biofilter's ability to reduce methane emissions from a pig herd, and the results were excellent, says Charlotte Scheutz, Professor at DTU, who headed the project.

The researchers are experimenting with a pump system that expels gases underneath a compost layer containing bacteria that break down methane: a biofilter. The biofilter is "established by ...

Designed by Nedlaw Living Walls and maintained by a Parker Plants, Drexel’s biowall is North America’s largest living biofilter and the only such structure installed at a U.S. university. It consists ...