Impact of Anaerobic Digestion on Solids, Nitrogen, Phosphorous, Potassium, and Sulfur Concentrations of Swine Manure

Anaerobic digestion of swine manure is a treatment process that can be used to reduce odor emissions, generate bioenergy, and reduce methane emissions. Studies and models are available that can be used to quantify methane production, and volatile solids (VS) reduction rates. Few provide information on the plant nutrient contents of digested manure.

Plant Nutrient and Carbon Content of Equine Manure as Influenced by Stall Management and Implications for Nutrient Management


South Carolina’s equine industry is small compared to states like Texas (395,816 horses), Oklahoma (158,918 horses), and Kentucky (141,842 horses, USDA, 2013). However, the South Carolina equine industry has increased over the last twelve years.

The increase in interest and participation in horse ownership centers around several activities including trail riding, polo, fox hunting, Western and English competitions, shows, and training facilities of all kinds.…