Thirty-four groups that focus on the environment and small farms are asking the U.S. Department of Agriculture to stop ...

CASA GRANDE — Thousands of gallons of liquid manure sit in the open on 25-foot deep settling ponds at Casa Grande Dairy Co. Farm owner Jim Boyle says he could earn some extra revenue by taking biogas, ...

A new petition seeks to end the Rural Energy for America Program’s support for on-farm digesters, which environmental ...

WASHINGTON, April 30, 2014 -- Just 25 miles from downtown Seattle, Jim Werkhoven and his brother Andy run a 1,100-head dairy farm that uses an anaerobic digester to process cow manure and pre-consumer ...

Anaerobic digestion is widely used around the world to treat organic waste while producing biogas, a renewable energy source ...

In April, Avatar Systems installed an anaerobic digester system at the 170cow Keewaydin Dairy Farm in Stowe. Avatar's mixed-plug flow system is composed of horizontal fiberglass hulls, 20and 40-ft.

Ruihong Zhang, a UC Davis professor of biological and agricultural engineering, has been working on her anaerobic digester technology for the past decade. Technology invented by a University of ...

SUNNYSIDE, Wash. — A new $13.5 million manure digester system planned for two large dairies near Sunnyside could resolve federal allegations that they are polluting drinking water — and provide a ...

Iowa lawmakers advanced a bill to regulate anaerobic digesters on animal feeding operations. (Photo by Lance Cheung/USDA) A bill advanced from the Iowa House Thursday that would regulate anaerobic ...