Jun 2, 2022 · This work is a life cycle assessment (LCA) of three RNG pathways with multiple feedstocks and technologies. The three pathways evaluated are anaerobic digestion (AD), thermal gasification (TG), and power-to-gas (P2G). AD generates biogas by breaking down organic matter in the absence of oxygen.

Feb 15, 2023 · Renewable natural gas (RNG) can be produced from landfill gas, wastewater sludge, and animal waste. Triple bottom line performance of waste-derived gaseous fuel was assessed using LCA and LCC. Animal manure-derived RNG production provides the best environmental performance.

CA-GREET4.0 model is a modified version of the Argonne National Laboratory GREET1 2022 model to reflect California-specific fuel pathways, used to generate the carbon intensities of those fuel pathways. ICAO-GREET version is used to estimate and verify the default core life cycle assessment values of the CORSIA-approved safe aviation fuel pathways.

May 22, 2024 · The LCA aims to estimate the emissions associated with 1 MJ of RNG produced via AD and biogas upgrading. The study uses 1 MJ of RNG produced as the functional unit to facilitate easy comparison with other studies.

RNG can be used as an alternative to fossil natural gas, while LA from waste 19 feedstocks can displace conventional LA production pathways (mainly from corn via fermentation). 20 Providing comprehensive life cycle GHG emissions of the combinations of waste feedstocks and products

Aug 15, 2021 · In this study, we evaluate the life cycle greenhouse gas (GHG) emission reduction benefits of renewable natural gas (RNG) and lactic acid (LA) production from four types of wet waste feedstocks (wastewater sludge, food waste, swine manure, and fats, oil, and grease [FOG]) via anaerobic digestion (AD) and LA fermentation, respectively.

Science-based and internationally accepted life-cycle assessment (LCA) is an effective tool for policy makers to make scientifically informed decisions on expanding renewable energy production from newly developed bioenergy technologies.

Feb 22, 2024 · The article discusses and contrasts different methods of producing RNG under the NGFW processes, with variations in the production pathways dictated by the types of waste feedstocks available. LCA-C and LCA-E were used to facilitate the discussion and comparison of different RNG-from-waste pathways.

Apr 1, 2025 · Life Cycle Assessment is a scientific method used to evaluate the environmental impact of a product or process over its entire lifespan. In the context of RNG, the LCA study measures emissions from feedstock sourcing, biogas production, upgrading, distribution, and end-use combustion.

• An attributional and consequential life cycle assessment (LCA) of three RNG pathways with multiple feedstocks and technologies. • The three proposed pathways are: