Anaerobic Digest
Glenfiddich Distillery in Dufftown

BioCycle March/April 2014, Vol. 55, No. 3, p. 27

Managing Swine Manure In Utah
Liquid effluent is pumped from finishing barns to a one million gallon influent basin (above left). Submersible pumps transfer the liquid via a series of pump lift stations (above right) to the covered digesters.

The Blue Mountain Biogas plant installed two covered digesters with a total capacity of 22 million gallons to manage manure from about one million hogs raised annually.
Bryan Orchard
BioCycle March/April 2014, Vol. 55, No. 3, p. 54

Composters Defend Against Persistent Herbicides
ing of its mixer, a Green Mountain Compost operator had to remove compost affected by a persistent herbicide.

To mitigate exposure, composting facility operators are modifying feedstock recipes and increasing use of plant bioassays of finished compost. Part II
Craig Coker
BioCycle August 2013, Vol. 54, No. 8, p. 21

New Jersey Composter Taps Food Waste Opportunities
Ag Choice compost turner

Facility shifts from focus primarily on horse manure to a variety of commercial and industrial vegetative food waste streams. Next is the possibility of postconsumer feedstocks.

Dan Sullivan
BioCycle February 2012, Vol. 53, No. 2, p. 26

County Clusters Farms For Renewable Power Project
Dane county dgiester tanks

Green energy, job creation, dairy manure management and environmental protection all factor in to community digester in Dane County, Wisconsin.

Dan Sullivan
BioCycle February 2012, Vol. 53, No. 2, p. 31

 

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Farm Digester Industry In America
Figure 1. Anaerobic Digester Projects 2000-2011

Growth in facility installations is steady, but lack of capital and antiquated energy policies remain obstacles to realizing the broad suite of benefits that manure-based digester systems could achieve.

Allison Costa and Chris Voell
BioCycle February 2012, Vol. 53, No. 2, p. 38

Dairy Digester Evolution In New York State
New York State dairy farm plug-flow digester

Cornell University has been involved with anaerobic digestion systems on dairy farms for almost 40 years. A member of its PRO-DAIRY team discusses the past, present and future of AD in the Empire State.

Nora Goldstein
BioCycle February 2012, Vol. 53, No. 2, p. 41

 

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Biomass Energy Outlook: Waste By Any Other Name May Still Be Waste
Mark Jenner

I have spent most of my professional life as a manure economist adding value to undervalued organics. For years I have preached and goaded folks not to use the word ‘waste.’ Six months ago I started moving away from that position, because moving waste materials back into the economy is progressing so slowly.

Mark Jenner
BioCycle February 2012, Vol. 53, No. 2, p. 53