Ontario Composter Expands With Digestate Processing
Digestate is mixed with carbon sources using an Ecoverse DW 3080 stationary shredder/blender in the enclosed receiving hall at the composting facility.

All Treat Farms composts digestate from the anaerobic digester servicing the City of Toronto’s residential organics collection program.
Peter Gorrie
BioCycle August 2015, Vol. 56, No. 7, p. 32

 

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BioCycle, The Organics Recycling Authority
Composting • Renewable Energy • Sustainability

 

Anaerobic Digest
AgSTAR website redesign

BioCycle July 2015, Vol. 56, No. 6, p. 14

Powering A Creamery On Food Waste Feedstocks
(1) Langage Farm’s 3-tank digester systems (left). Digestate holding tank with flare (in foreground) and digestate solar drying greenhouse (in rear). (2) Grit separation unit mounted on digester roof. (3) Digester tanks with Yield/FITEC self-cleaning tank system on top that perform grit removal with floor scraper, gravity separation and skimmer to remove floating contaminants.

To help make the investment in an AD plant pencil out, a dairy and creamery in southern England threw its hat into the municipal and commercial organics processing arena.
Nora Goldstein
BioCycle December 2014, Vol. 55, No. 11, p. 38

Capitalizing On Digester Coproducts
An add-on process for nutrient recovery from digested effluent yields phosphorus (left) and nitrogen (right).

Nutrient management, demand for organic fertilizers and the need for non-energy revenue streams are driving development of high-value coproducts using digestate.
Peter Gorrie
BioCycle August 2014, Vol. 55, No. 7, p. 48

Creating A Solid Base For Digestate Use In The United Kingdom
The UK government’s “Anaerobic Digestion Strategy and Action Plan” annual report recognizes the value of digestate: “When used effectively and appropriately, it is a valuable fertilizer which can directly replace other inorganic fertilizers.” An example of liquid digestate application on cropland is shown. (Photos courtesy of John Rennie & Sons and Bryan Lewens.)

Policies are in place to stimulate development of digestate markets across the United Kingdom. Research provides strong support but challenges still remain.
David Riggle
BioCycle October 2012, Vol. 53, No. 10, p. 44

 

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BioCycle, The Organics Recycling Authority
Composting • Renewable Energy • Sustainability

 

University Pioneers Dry Fermentation
University of Wisconsin in Oshkosh fermenters, percolate tank, biogas collection

To help achieve its goal of energy independence, the University of Wisconsin in Oshkosh invested in a high solids, dry fermentation anaerobic digester to process source separated organics.

Nora Goldstein
BioCycle February 2012, Vol. 53, No. 2, p. 35

 

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BioCycle, The Organics Recycling Authority
Composting • Renewable Energy • Sustainability