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Darling to produce RNG, capture CO2 from wastewater in partnership with GreenGasUSA

GreenGasUSA and Darling Ingredients Inc. announced a new partnership June 5 to produce renewable natural gas (RNG) and capture CO2 from the wastewater streams at Darling’s facilities in the U.S.


The collaboration is expected to result in material greenhouse-gas (GHG) emissions reductions at Darling’s facilities from the installation of gas-upgrading systems, CO2-capture systems, as well as generate other beneficial coproducts. 


The initial plan is to start with five Darling Ingredients plants in the U.S. with the opportunity to expand to other facilities depending on feasibility and market conditions.


At the core of its business, Darling Ingredients champions sustainability, and GreenGasUSA is a leading producer of RNG from environmental and industrial waste streams. 


Through Darling and GreenGasUSA’s collaboration, they aim to accelerate the development of innovative solutions to unlock value from waste streams and deliver significant environmental benefits such as GHG reductions. 


“We are excited to announce this landmark agreement with Darling Ingredients,” said Marc Fetten, CEO and founder of GreenGasUSA. “It is our mission at GreenGas to help businesses reduce their environmental impact by providing solutions that generate economic benefits. Darling Ingredients has been at the forefront of the effort to repurpose waste and integrate circularity into industrial operations and GreenGas is proud to support this mandate by partnering to convert agricultural and food waste into a valuable renewable energy product.” 


Randall C. Stuewe, chairman and CEO of Darling Ingredients, added, “Darling continues to find value where others see waste. By combining our deep knowledge of RNG from our position in Europe with the capabilities of GreenGas in the U.S., Darling can significantly decrease its greenhouse-gas emissions and help develop a successful RNG business in the U.S.”


Hugh Weathers, the South Carolina commissioner of agriculture, added, “The innovative collaboration between GreenGas and Darling Ingredients is evidence of the important role that the agricultural sector will play in advancing the clean-energy economy. I have long been a supporter of GreenGas’ work to create renewable products from agricultural waste streams and reduce carbon emissions. And I am particularly excited about GreenGas’ CO2-capture technology that both introduces circularity into agricultural processes and creates an important raw material for producers.” 


Darling operates over 260 facilities in more than 15 countries and processes about 15 percent of the world’s animal agricultural byproducts, produces about 30 percent of the world’s collagen (both gelatin and hydrolyzed collagen), and is one of the largest producers of renewable energy.


GreenGasUSA partners with global businesses to help reduce their environmental footprint by producing renewable natural gas and other renewable products, like CO2, clean water and agricultural nutrients.


GreenGasUSA’s wastewater and engineering experts design and permit comprehensive biogas solutions including biogas capture, anaerobic digestion, gas flaring, compression, transportation and pipeline injection.


The company has operational RNG facilities at agricultural and food processing sources across the country, with proven success in installing, commissioning and operating gas-upgrading equipment, RNG and CO2 product compression and transportation, and existing pipeline injection infrastructure.


GreenGasUSA has five operational RNG facilities, one CO2 facility and is actively developing additional RNG and CO2 facilities across the U.S. 



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