Bacterial Filters Reduce Stink from Big Pig Factories

Description

Concentrated animal feeding operations (CAFOs) on industrial animal factories can stink up an entire county, due to ammonia, and a smorgasbord of volatile organic compounds (VOCs). Jeppe Lund Nielsen of Aalborg University, Aalborg, Denmark, et al. report that biofiltration with microbial filters can remove most of the butyric acid, dimethyl disulfide, and ammonia from the exhaust air, along with other smelly compounds.