(image courtesy: pxfuel.com) There are two primary economic barriers to RNG that can prevent an RNG project from getting off the ground: economic challenges and technical challenges. In this article we will look at some of the economic barriers RNG...
Oxygen Removal from Natural Gas Natural gas utilities often set stringent limits for oxygen in renewable natural gas that is injected into their natural gas pipeline network. Since high oxygen levels can promote corrosion of the pipeline infrastructure, utilities tend...
Depending on how much nitrogen is present in the biogas, it may be necessary to remove or reject nitrogen in order to comply with renewable natural gas (RNG) specifications. Since biogas collected from landfill sites is more likely to be...
VOC and siloxane removal from biogas captured on landfills forms an essential part of the purification process when landfill gas is used as a vehicle fuel or injected into a natural gas pipeline. Since the presence of siloxanes, even at...
In order for RNG to meet the standards required for use as vehicle fuel or injection into a natural gas pipeline it needs to have impurities such as carbon dioxide removed. There are currently four methods that are typically employed...
Depending on what feedstock is used in the digestion process, the raw biogas that is collected from the biodigester typically consists of between 45-65% flammable methane, with several impurities making up the balance. When the biogas is used to produce...
Current Status of RNG Projects in the US According to a recent EPA report, as of July 2020, 34 states had over 100 operational RNG projects, and as of February 2020, there were around 40 more under construction. The EPA...
The Upcycle: Beyond Sustainability — Designing for Abundance, authors William McDonough and Michael Braungart propose that if we wish to become truly sustainable, we need to completely rethink the way we design materials, and that we should look to nature...
Switching from conventional natural gas (fossil fuel) to renewable natural gas results in a reduction in greenhouse gas (GHG) emissions that benefit climate change. One method used to determine the climate benefit offered by a fuel is to assess its...
