Dairy Digester Opens Doors On Maryland Farm
The covered lagoon digester has a capacity of 680,000 gallons. It treats dairy manure in addition to food wastes, such as chicken and meatball fat and ice cream waste.

The Kilby family in northeastern Maryland operates a dairy farm, ice cream and milk processing plant, ice cream parlor — and an anaerobic digester.
Stephanie Lansing and Nora Goldstein
BioCycle September 2014, Vol. 55, No. 8, p. 66

Anaerobic Digest
Geomembrane Technologies Inc. (GTI) installed a floating gas collection cover over the complete 4-acre surface of the Tulare, California's digester.

BioCycle September 2014, Vol. 55, No. 8, p. 20

Anaerobic Digest
Barrett’s Mill Anaerobic Digester (BMAD) facility in Shropshire, England, built by Evergreen Gas in 2012.

BioCycle August 2014, Vol. 55, No. 7, p. 20

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

Digested Dairy Manure To High-End Potting Soil
Magic Dirt is blended with natural recycled materials and packaged in one cubic foot bags that are currently sold in Idaho and parts of several other Western states.

An anaerobic digester development company launched a bagged potting soil product to utilize digested dairy manure fibers and improve long-term success of facilities.
Nora Goldstein
BioCycle July 2014, Vol. 55, No. 6, p. 48

Building Farm And Food Scrap Digesters
The new digester at Longview Farm in Hadley, Massachusetts has three receiving tanks for food waste. They are separated and stored based on their energy content.

A steady stream of anaerobic digestion facilities are coming on line, most equipped to process food waste. This first of a two-part series profiles several farm digesters. Part I
Nora Goldstein
BioCycle June 2014, Vol. 55, No. 5, p. 58

Anaerobic Digest
This Grand Junction (Colorado) fueling station delivers biogas-based CNG generated at the Persigo Wastewater Treatment Facility

BioCycle June 2014, Vol. 55, No. 5, p. 18

From Casino Kitchens To On-Site Digester
The casino recently installed a Grind2Energy unit that grinds the food waste and pumps the slurry into an on-site 2,000-gallon storage tank.

Preconsumer food waste from the Potawatomi Bingo Casino in Milwaukee, along with feedstock from local generators, is processed in the Potawatomi Community’s new anaerobic digester.
Dan Emerson
BioCycle May 2014, Vol. 55, No. 4, p. 40

 

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Anaerobic Digest
Glenfiddich Distillery in Dufftown

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

Universities Collaborate On Small-Scale Digester Technology
v

Small-scale digester at an experimental station in Costa Rica has potential to be a model for rural communities throughout Latin America.
Katrina Mendrey
BioCycle March/April 2014, Vol. 55, No. 3, p. 58

 

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Digester Fueled By Postconsumer Organics
The receiving building houses a bioseparator to remove packaging and other contaminants.

The JC-Biomethane anaerobic digester in Junction City, Oregon, processes source separated organics from the Portland region. Digested solids are composted at an adjacent facility.
Katrina Mendrey

Feedstock Seasonality Impact On Biogas Production
May food waste (top, left) May yard trimmings (top, right) October yard trimmings (bottom, left) November food waste (bottom, right)

First graduate student to work on-site at University of Wisconsin-Oshkosh dry fermentation digester describes feedstock variations and biogas production trends.
Brooke Koenig
BioCycle February 2014, Vol. 55, No. 2, p. 43

Source Separated Organics Digestion In Alberta
Growing Power Hairy Hill started with an anaerobic digester to process manure from an adjacent cattle feedlot. Today, the facility is receiving 200 tons/day of source separated organics from the Edmonton region.

An existing manure digester, colocated with an ethanol plant, is accepting up to 200 tons/day of municipal source separated organics, food processing wastes and biosolids.
Peter Gorrie
BioCycle January 2014, Vol. 55, No. 1, p. 55

Biodigesters And Dehydrators — Operational Experiences
One dehydrator is being filled (on left), while the second has finished the drying cycle and is unloading (above).

Interviews conducted with representatives of corporate facilities, a university, a hotel and a hospital indicate success with these systems in their particular settings. Part II
Zoë Neale
BioCycle January 2014, Vol. 55, No. 1, p. 52

Anaerobic Digest
Zero Waste Energy Development Company's large-scale commercial dry fermentation anaerobic digestion and composting facility in San José, California.

BioCycle January 2014, Vol. 55, No. 1, p. 20
San José, California: Mixed Organics AD, Composting Facility Opens For Business • Albany, New York: Green Bank Receives Needed Funding • Littleport, Ely, United Kingdom: Produce Grower Starts Up Anaerobic Digester • Waltham, Massachusetts: Harvest Power Announces New CEO • Quito, Ecuador: Brewery Invests In Second Digester • Cleveland, Ohio: Stadium Food Waste To Campus Digester • Batavia, New York: Ag Park Digester Wins $2 Million Grant

Anaerobic Digest
Anaerobic Digest

BioCycle December 2013, Vol. 54, No. 12, p. 14

Solid Waste District Pilots Dry Fermentation Digester
The SmartFerm containers, now manufactured in the U.S., were dropped into place using a crane.

Small-scale anaerobic digester on Monterey Peninsula is processing 5,000 tons/year of source separated organics. Power is sold to an adjacent wastewater treatment plant.
Abbie Beane
BioCycle November 2013, Vol. 54, No. 11, p. 32

Economics Of Dairy Digesters In Washington State
Figure 1: Washington dairies and dairy digesters

Feasibility study supports a shift from the conventional CHP model to a renewable natural gas (RNG) model that takes advantage of the accelerating move to natural gas fuels in the transportation sector.
Nicholas Kennedy
BioCycle November 2013, Vol. 54, No. 11, p. 36

Analysis Of Biodigesters And Dehydrators To Manage Organics On-Site
The food chute is pictured on EnviroPure’s biodigester. Units range in capacity — from 120 to 3,000 lbs/24-hour period.

Pending organics disposal bans and/or commitments to divert food waste from landfills has led to fairly aggressive marketing by vendors of on-site food waste processing systems. Part I
Zoë Neale
BioCycle October 2013, Vol. 54, No. 10, p. 20

Anaerobic Digest
Rosendale Dairy's digesters in Pickett, Wisconsin

BioCycle October 2013, Vol. 54, No. 10, p. 12

Agricultural Anaerobic Digestion In The U.S.
Figure 2. Technologies at farm AD facilities

The number of digesters at agricultural operations increased in 2012 — although less than 2 percent of dairy and swine operations in the U.S. have AD systems.
Nora Goldstein
BioCycle September 2013, Vol. 54, No. 9, p. 41

 

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Why Is A Real Estate Giant Bullish On AD?
Forest City is majority owner of the anaerobic digesters built with quasar energy group. A newly constructed facility in Buffalo, New York (left) is sized to generate 765 kW/hour.

Forest City Enterprises, one of the nation’s largest real estate developers, is investing in anaerobic digestion to reduce energy costs and ease the load on municipal infrastructure.
Nora Goldstein
BioCycle September 2013, Vol. 54, No. 9, p. 32

Dedicated Food Waste Digester Opens In Ontario
Harvest Power’s new anaerobic digester in London, Ontario includes three holding tanks for incoming feedstocks, a thermophilic acidification reactor that heats substrates to 131°F where they are held for three days and two mesophilic digesters.

Facility in London, Ontario is ramping up to process 71,500 tons/year of food industry residuals. Digestate will be heat-dried into fertilizer products.
Peter Gorrie
BioCycle September 2013, Vol. 54, No. 9, p. 56

 

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Entrepreneuring In The AD Industry
Four quasar digesters upgrade biogas to “qng” compressed natural gas, which retails for an average of $2.25/gasoline gallon equivalent (fueling station at left). About 30 quasar vehicles, including some tanker trucks, are equipped with CNG engines (see arrow above).

What seemed like a “slam dunk” in 2006 — bringing the European model of digester success to the U.S. and rapidly building a company — turned out to be a longer haul, but one that has been rewarding for quasar energy group.
Nora Goldstein
BioCycle September 2013, Vol. 54, No. 9, p. 44

Editorial: Energy “Independence”
Nora Goldstein, BioCycle

Nora Goldstein
BioCycle September 2013, Vol. 54, No. 9, p. 4

Sacramento Food Waste Digester Fuels Collection Fleet
The DODA depackaging/ preprocessing system at the Sacramento BioDigester is sized for a 100 tons/day. Loads include cans of off-spec food that are tipped onto the conveyor belt of the system.

An anaerobic digestion facility that expects to be processing 100 tons/day of source separated organics by 2014 is already fueling 10 trucks daily with renewable CNG.
Nora Goldstein
BioCycle July 2013, Vol. 54, No. 7, p. 56

Anaerobic Digest

Tweet BioCycle June 2013, Vol. 54, No. 6, p. 15 Eureka, California: Permitting Toolkit For Food Waste Digesters The Humboldt Waste Management Authority (HWMA) is a Joint Powers Authority comprised of five municipalities and Humboldt County. The HWMA has been steadily progressing through the stages of developing a stand-alone food waste digester (capacity to be

Grocery Chain Unveils On-Site Digester
The Kroger Recovery System includes an anaerobic digester with a 2-million gallon reactor tank and a 250,000-gallon staging tank for incoming material. The installation at the food distribution center highlights the integration of AD of food waste into an urban environment.

The Ralphs/Food4Less distribution center in Compton, California showcases its 150 tons/day anaerobic digester.
Nora Goldstein
BioCycle June 2013, Vol. 54, No. 6, p. 41

Farm Digester Progress In Pennsylvania
Pennsylvania has 30 dairy digesters, including the one shown at Oregon Dairy, as well as around 5 swine digesters. About 10 of those have been installed since 2010.

Deputy Secretary of Agriculture Jay Howes and Center for Dairy Excellence Director John Frey share insights on farm digester trends in the Keystone State.
Nora Goldstein
BioCycle May 2013, Vol. 54, No. 5, p. 26

Art And Science Of Digester Heat Exchange
Combined heat and power (CHP) systems produce both thermal and electric energy. The unit selected is dependent on the amount of heat required and the goals of the AD facility.

Providing sufficient thermal energy is a fundamental requirement to successful AD operation. This primer reviews temperature requirements and methods to attain and maintain recommended values.
Kevin Jankowski
BioCycle May 2013, Vol. 54, No. 5, p. 36

 

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Codigestion Research Builds Facility Operator Confidence
Figure 2. Nutrient limits in food waste digestion

Research can improve the economic viability of codigestion facilities and ease concerns of managers of water reclamation facilities about receiving additional organic waste and the potential for digester upsets. Part II
David L. Parry
BioCycle May 2013, Vol. 54, No. 5, p. 32

 

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Editorial: Getting It
Nora Goldstein, BioCycle

Nora Goldstein
BioCycle May 2013, Vol. 54, No. 5, p.4

Farm Digester Evolution In Vermont
Maplehurst Farm in Greensboro installed a 300,000-gallon RCM digester to process manure from about 375 dairy cows. Recently, it was approved to receive off-farm feedstock to boost biogas production.

With over 15 operating anaerobic digesters and several innovative power purchase incentive programs, Vermont provides an opportunity to assess what is required
to advance AD in the agricultural sector.
Nora Goldstein
BioCycle February 2013, Vol. 54, No. 2, p. 28

Digester Taps Thermal Energy To Grow Greens
Neighborhood Farm is able to plant lettuce and cut greens for sale within three weeks. Radiant heat keeps the soil at 70° to 75°F

Vermont farm adds new revenue stream by installing greenhouse heated with thermal energy from the digester engine.
Nora Goldstein
BioCycle February 2013, Vol. 54, No. 2, p. 33

 

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Anaerobic Digest

Tweet BioCycle February 2013, Vol. 54, No. 2, p. 17 Madison, Wisconsin: Report Assesses Viability Of AD At Swine Operations While installation of anaerobic digesters has been increasing at a steady rate on dairy farms, swine operations have lagged behind, with only about two dozen in operation in the U.S. A new report issued by

Biogas Production And Potential From U.S. Wastewater Treatment
Figure 2. Percentages of biogas utilization technologies in use at WWTPs producing biogas

An extensive data collection undertaking has yielded an improved picture of wastewater treatment plants in the U.S. with operating anaerobic digesters and if and how the biogas generated is utilized.
Maile Lono-Batura, Yinan Qi and Ned Beecher
BioCycle December 2012, Vol. 53, No. 12, p. 46

Anaerobic Digest
Microsoft moves ahead on environmentally-friendly on-site power generation with biogas powered data center.

BioCycle December 2012, Vol. 53, No. 12, p. 19

Anaerobic Digest
New digester for Port of Tillamook Bay industrial park

TweetBioCycle November 2012, Vol. 53, No. 11, p. 17 Diamond Bar, California: RFP For Emission Control Technologies For Biogas Engines The South Coast Air Quality Management District (AQMD) has released an RFP to solicit proposals for the deployment of selective noncatalytic reduction (SNCR) emission control technologies for internal combustion engines operating on landfill and/or digester

Anaerobic Digester Expands Treatment Options
The Food to Fuel project takes waste grease and oil from restaurants and food processing facilities and separates the oil from the water (left) to produce a heating oil. Residuals from that process, along with food waste and municipal sludge, are anaerobically digested in a 1.23 million gallon Biothane continuously-stirred reactor (below).

What began as a septic tank pumping company in 1955 has expanded into a full-service wastewater treatment company — and renewable energy producer.
Barb Culton and Richard Mattocks
BioCycle September 2012, Vol. 53, No. 9, p. 41

 

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Renewable Energy From Organics Recycling 2012
BioCycle Renewable Energy From Organics Recycling Conferenc 2012 Preview

BioCycle’s 12th Annual Conference in St. Louis, Missouri focuses on optimizing management of operating facilities, strategies for new project and product development and building biogas markets.
Nora Goldstein
BioCycle September 2012, Vol. 53, No. 9, p. 35

Anaerobic Digest

Tweet BioCycle September 2012, Vol. 53, No. 9, p. 19 Washington, DC: USDA Announces AD Funding The United States Department of Agriculture (USDA) Rural Business-Cooperative Service recently announced $14 million in funding for its Value Added Producer Grant competitive grants program. The program is designed to help agricultural producers enter into value-added activities and may

Anaerobic Digest
Fremont (Michigan) Community Digester project

BioCycle July 2012, Vol. 53, No. 7, p. 14

Anaerobic Digest
Small dairy sells renewable energy generated from anaerobic digestion.

BioCycle May 2012, Vol. 53, No. 5, p. 14

California’s Emerging Carbon Market
California Carbon Credit Prices1

BioCycle April 2012, Vol. 53, No. 4, p. 44
Starting in 2013, California will begin the nation’s most comprehensive cap-and-trade program. Dairy and swine digester projects anywhere in the U.S. are eligible to sell carbon credits.

Anaerobic Digestion

BioCycle April 2012, Vol. 53, No. 4, p. 18
Ontario, Canada: Favorable News On Biogas Feed-In Tariff; Portland, Oregon: Biogas Project Eschews Public Funding; Sacramento, California: High Solids Anaerobic Digester; London, England: Famous Ad Investors In Britain; St. Paul, Minnesota: State Funding For Ad Projects; Rosemont, Illinois: Sustainable Dairy Farmers Honored; Washington, DC: DC Waters Invests $4.1 Billion In Renewables

Wastewater Treatment Facilities As Renewable Resource Centers
Seattle, King County Wastewater Treatment

One of the great public health triumphs of the last century — wastewater treatment — is poised for transformation into a community sustainability centerpiece.

Sally Brown
BioCycle March 2012, Vol. 53, No. 3, p. 41

 

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Financial Feasibility Of Digester Development
Washington State dairy digester

With by-product revenue streams — combined with loans — digesters are approaching financial viability, at least for larger projects.

Nora Lake-Brown and David Paul Rosen
BioCycle March 2012, Vol. 53, No. 3, p. 52

 

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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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New Life For Texas Manure Digester Complex
Huckabay Ridge digesters

Huckabay Ridge was shuttered in 2010, but after the facility was purchased at a public auction, operations restarted in 2011.

Diane Greer
BioCycle February 2012, Vol. 53, No. 2, p. 49

 

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Digester In Magic Hat’s Sustainability Mix
Magic Hat

With its ability to expand production restricted by BOD discharge limits, Vermont brewer directs its wastewater, spent yeast and grain waste to anaerobic digestion.
Molly Farrell Tucker
BioCycle January 2012, Vol. 53, No. 1, p. 58

 

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