Anaerobic Digestion
The U.S. Environmental Protection Agency (EPA) recently announced that the City of Madison, Wisconsin, Vermont Department of Environmental Conservation, and Washington State University's Energy Program have been selected to receive funding for projects to help reduce food waste and loss and divert food waste from landfills by expanding anaerobic digester capacity in the United States. These projects further the federal government's efforts set forth in the Winning on Reducing Food Waste Initiative.
Published in Anaerobic Digestion
The Güres Group, a poultry farm in Manisa, Turkey, has been experiencing a growth spurt for over five decades. Ahmet Remzi Güres, one of the founder deputies of the Republic of Turkey, started out with only 600 hens in 1963. Today, the farm produces one billion eggs a year.
Published in Anaerobic Digestion
The story of how Reinford Farms in Mifflinton, Pennsylvania ended up where it is now – with sources of income and savings stemming from their digester – is both surprising and inspiring.
Published in Profiles
With the New Year in full effect, so too is the conference and trade show season. All across North America (and the world), industry folk have been braving the winter temperatures to take in the latest educational sessions, network with a few like-minded individuals or maybe just collect a few free pens. Regardless of the motives, trade show season is full of opportunity.
Published in Biogas
The American Biogas Council released the following statement in response to the fourth National Climate Assessment. The American Biogas Council is the trade association for the U.S. biogas industry. Biogas systems recycle organic material like food and yard waste, sewage sludge and animal manure, producing renewable energy in addition to valuable soil products.
Published in Biogas
Smithfield Foods, Inc., is pleased to announce, through the nationwide expansion of Smithfield Renewables, innovative projects designed to help meet its goal to reduce the company's greenhouse gas (GHG) emissions 25 percent by 2025, which it set in concert with the Environmental Defense Fund (EDF). This month marks the one-year anniversary of Smithfield Renewables.
Published in Companies
The American Biogas Council announced the winners of the Biogas Industry Awards, presented at a sold out dinner celebration at BIOCYCLE REFOR18. Thirty-three awards were presented to exceptional technology innovations and biogas projects across the industry in the agricultural, municipal and merchant sectors.
Published in News
The California Department of Food and Agriculture (CDFA) has awarded $69.9 million in grant funding to 40 dairy digester projects across the state. These projects, part of the Dairy Digester Research and Development Program (DDRDP), will reduce greenhouse gas emissions from manure on California dairy farms.

Dairy manure produces methane when it decomposes. Methane is a powerful greenhouse gas that traps more than 80 times as much heat in the atmosphere as carbon dioxide.

Dairy digesters help capture methane emissions, which can be used to produce electricity or natural gas.

"Dairy operations in California continue to step up to ensure the agriculture sector contributes to climate change mitigation and adaptation. These collaborative efforts between the State, dairy operations and developers are making California a national and international leader in supporting on-farm methane reductions using climate-smart agriculture management approaches that also generate renewable energy," said CDFA secretary Karen Ross.

Financial assistance for the installation of dairy digesters comes from California Climate Investments, a statewide initiative that uses Cap-and-Trade program funds to support the state's climate goals.

CDFA and other state agencies are investing these proceeds in projects that reduce greenhouse gas emissions and provide additional benefits to California communities. Dairy digester grant recipients will provide an estimated $95.5 million in matching funds for the development of their projects.

Information about the 2018 Dairy Digester Research and Development Program projects is available at www.cdfa.ca.gov/go/dd.
Published in News
Findings by a team of University of B.C. wastewater engineering researchers at the Okanagan campus have revealed a low-cost solution to many of the problems plaguing anaerobic digesters used by municipalities.

Anaerobic digesters are seen as a popular solution to wastewater treatment as they offer the potential for producing green energy and associated products.

Anaerobic digestion uses a series of biological micro-organism processes to break down wastewater material to produce biogas, which can then be combusted to generate electricity and heat, or can be further processed into renewable natural gas or transportation fuels. Dewatered material can also be used for compost. | READ MORE
Published in News
A family is turning the hog manure into methane to power the family farm, reduce greenhouse emissions and generate income.

Lisa and Drew Remley of Remley Farms held an open house to unveil the new 20,000-gallon anaerobic methane digester.

Power from the biodigester power will reduce the farm's $3,000-$3,500 monthly electric bill. | READ MORE
Published in Anaerobic Digestion
This February was the celebration of a great partnership of California dairies and California Bioenergy (CalBio).
Published in Anaerobic Digestion
You can think of an anaerobic digester as a big metal stomach. Biodegradables go in, get composted, and turned into energy. And now, the hope is that the waste turns into a profit.

Matthew Freund, president of Freund's Farm in East Canaan, said that anaerobic digestion technology let him diversify his business. A unit built in 1997 took in cow manure and allowed him to create a new product: biodegradable seed planters called "CowPots." | READ MORE
Published in Anaerobic Digestion
Installation and construction are complete on a DVO Inc. anaerobic digester at Ar-Joy Farm, a dairy farm in Cochranville, Pennsylvania.

This is DVO's first installation in Pennsylvania, bringing the number of states with a DVO digester to 19. Its patented digester system has also been constructed in six foreign countries.

Anaerobic digestion (AD) is a collection of processes by which naturally occurring microorganisms transform waste into valuable byproducts in a controlled, oxygen-free environment.

DVO's patented Two-Stage Linear Vortex anaerobic digester is unlike any other technology. Traditional AD technologies featuring above-ground tanks are inefficient and costly to operate.

"We are honored to be working with Marilyn and Duane Hershey (owners of Ar-Joy), a couple long admired in their community and acclaimed in the dairy industry for their advocacy and leadership. Marilyn serves as chair of Dairy Management, Inc. and in 2017 was named Dairy Woman of the Year at the World Dairy Expo. Duane serves on the Land O'Lakes Board of Directors," said Steve Dvorak, president of DVO. "We know they are dedicated to environmental sustainability and are proud they chose to implement DVO's digester technology."

The DVO anaerobic digester processes the waste from Ar-Joy's 700 milking cows, as well as local organic waste streams. Currently the farm is adding waste from a potato chip company three times a week and is seeking additional feedstocks for the digester.

The biogas generated from the waste streams is powering a 300-kW gen-set which delivers renewable electricity to the local grid. The farm has a net-metering program with its local utility which allows the farm to lower its electrical costs by off-setting the power from its electrical meters. Any excess generated power not used by the dairy is sold to the utility.

The dairy is utilizing the separated digested solids for bedding, having previously bedded with sand. The digested liquid is stored in a lagoon to be applied as fertilizer on to growing crops, increasing crop yield and reducing the likelihood of nutrient runoff.

"The digester provides us a variety of environmental benefits, such as producing power and recycling waste. A big driver for us was the ability to expand our operation and bring in additional revenue without adding cows," explained Duane Hershey. "The community response to our digester has been real positive. When the neighbors come down and see it, they get excited. They all say we need more of these digesters on farms."

Learn more about DVO's solutions for agricultural wastes and renewable energy here, http://www.dvoinc.com/

Published in Anaerobic Digestion
Marin County, Calif. - On one organic dairy farm, the feed truck runs on cow power.

"I was able to put together a fully electric truck to feed the cows that's powered by the cow's waste. We claim that's the first one in the world to do that," says Albert Straus, CEO of Straus Family Creamery in Marin County, California.

When cow manure breaks down, it releases methane, a potent global warming gas. But that methane can be captured and used to make electricity. Using technology called a methane digester, Strauss has been converting his cow's manure into energy for the last 14 years. The process produces enough electricity to power the whole farm. And now, that energy is also being used to charge his electric truck. | For the full story, CLICK HERE
Published in Anaerobic Digestion
Bath Township, OH - Renergy Inc., held an open house on in mid-March at its Dovetail Energy LLC Bioenergy Facility in Bath Township and provided tours for several hours so residents could experience first-hand the technology being used there.

Cari Oberfield, marketing strategist for Renergy Inc., who attended the open house, said the waste processed at the anaerobic digestion facility consists of 70 percent food waste from commercial manufacturing, 20 percent biosolids and one percent hog manure. | READ MORE
Published in News
Calgren Dairy Fuels is becoming known as a world leader in biogas production and utilization, with good reason. Of the 18 dairy digester projects that were recently awarded more than $35 million in funding by the California Department of Food and Agriculture, seven of them involve Calgren.
Published in Anaerobic Digestion
For a team of University of Nebraska-Lincoln chemical and biomolecular engineering students, biogas refining isn’t just a senior design capstone project, it’s a potential means of supplying Nebraska’s rural communities with a renewable source of energy that comes from resources that are both local and plentiful.
Published in Anaerobic Digestion
Nutrient management plans are all but required on most large farms these days in the United States, which is why it is not so uncommon anymore for dairy farms with multiple locations to have more than one anaerobic digester to treat their raw manure.
Published in Anaerobic Digestion
Farm manure could be a viable source of renewable energy to help reduce greenhouse gas emissions that cause global warming.

Researchers at the University of Waterloo are developing technology to produce renewable natural gas from manure so it can be added to the existing energy supply system for heating homes and powering industries. That would eliminate particularly harmful gases released by naturally decomposing manure when it is spread on farm fields as fertilizer and partially replace fossil natural gas, a significant contributor to global warming.

"There are multiple ways we can benefit from this single approach," said David Simakov, a professor of chemical engineering at Waterloo. "The potential is huge."

Simakov said the technology could be viable with several kinds of manure, particularly cow and pig manure, as well as at landfill sites.

In addition to being used by industries and in homes, renewable natural gas could replace diesel fuel for trucks in the transportation sector, a major source of greenhouse gas emissions.

To test the concept, researchers built a computer model of an actual 2,000-head dairy farm in Ontario that collects manure and converts it into biogas in anaerobic digesters. Some of that biogas is already used to produce electricity by burning it in generators, reducing the environmental impact of manure while also yielding about 30 to 40 percent of its energy potential.

Researchers want to take those benefits a significant step further by upgrading, or converting, biogas from manure into renewable natural gas. That would involve mixing it with hydrogen, then running it through a catalytic converter. A chemical reaction in the converter would produce methane from carbon dioxide in the biogas.

Known as methanation, the process would require electricity to produce hydrogen, but that power could be generated on-site by renewable wind or solar systems, or taken from the electrical grid at times of low demand. The net result would be renewable natural gas that yields almost all of manure's energy potential and also efficiently stores electricity, but has only a fraction of the greenhouse gas impact of manure used as fertilizer.

"This is how we can make the transition from fossil-based energy to renewable energy using existing infrastructure, which is a tremendous advantage," said Simakov, who collaborates with fellow chemical engineering professor Michael Fowler.

The modelling study showed that a $5-million investment in a methanation system at the Ontario farm would, with government price subsidies for renewable natural gas, have about a five-year payback period.

A paper on modelling of a renewable natural gas generation facility at the Ontario farm, which also involved a post-doctoral researcher and several Waterloo students, was recently published in the International Journal of Energy Research.
Published in Anaerobic Digestion
March 2, 2018, Wooster, OH — A rural community in northcentral Ohio is divided over plans to build a 10 million gallon waste lagoon on a farm north of Wooster.

Quasar Energy, which operates the anaerobic digester on the campus of the Ohio Agricultural Research and Development Center in Wooster, plans to construct the storage pond. The earthen-lined lagoon would hold both anaerobically digested biosolids and up to 300,000 gallons of hog manure annually from the landowner’s hog farm, according to the permit application.

Supporters say it will provide a source of organic fertilizer. Opponents fear it could lead to issues with groundwater contamination, odor and traffic. READ MORE
Published in Anaerobic Digestion
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