The GREET team of Systems Assessment Center at Argonne National Laboratory is pleased to announce a new release of the R&D GREET model.
What is New:
R&D GREET 1
- Updated CO2 capture and compression energy demand from different CO2 sources in the e-fuel tab.
- Updated methane leakage rates of the natural gas supply chain.
- Added a pathway for synthetic natural gas (SNG) produced from low-carbon hydrogen and captured carbon dioxide, including SNG transmission and distribution.
- Added new production pathways for five fossil-based and eight bio-based chemicals.
- Included a new allocation method in the steam cracking process that can be employed to allocate the impacts of the cracker operation entirely to the set of “target products”.
- Added new pathways for converting post-use plastic (PUP) to new plastic via co-feeding of PUP-based pyrolysis oil with fossil petrochemical-derived feedstock.
- Added new animal feed ingredients including alfalfa feed for mature cows, alfalfa feed for immature cows, corn silage, cotton feed, and corn cob.
- Updated an FT fuel production integrated with nuclear power generation pathway by adding an option to select whether or not steam is exported.
- Added a pathway for Ni/Al2O3 catalyst production for biofuel production.
- Updated NG-based ammonia production pathways by considering that all the vent gas containing methane is combusted.
- Updated two DAC pathways: High temperature (HT) absorption-based DAC and cryogenic carbon capture.
- Added a pathway for Fischer-Tropsch (FT) renewable diesel produced by Tri-reforming and Fischer-Tropsch synthesis of landfill gas (LFG).
- Added well-to-wheel analysis of a large agricultural tractor with several powertrain and fuel/electricity production pathways.
- Updated fuel economy and vehicle energy consumption of light-, medium-, and heavy-duty vehicles based on the latest simulation results from Argonne’s Autonomie.
- Added natural gas to methanol pathway in which hydrogen is a coproduct.
- Added ammonia for marine fuel use pathways from waste-based RNG, e.g., sewage sludge, swine manure, food waste, and FOG, pathways from hydrogen source options include coal gasification with CCS, poplar gasification, and PEM electrolysis with renewable energy, and corresponding ammonia transportation and distribution pathway.
- Updated use-phase analysis of two alternative marine fuels (methanol and ammonia) using the up-to-date industry energy/emissions data and literature-based assumptions.
- Updated the nuclear fuel cycle in GREET to reflect current operating conditions of light water reactor nuclear reactors and the uranium supply chain in the U.S.
- Updated the fertilizer and herbicide production life cycle inventory, and the herbicide ingredient mixes for major crops in the U.S.
- Updated N2O emission modeling of 4R practice in the FD-CIC.
- Updated the inventory for Brazilian sugarcane farming and ethanol production, based on data collected through RenovaBio program from year 2019/2020.
- Updated payload of a heavy heavy-duty truck to transport corn from the field to ethanol plant. Updated the on-farm fertilizer and pesticide usage inventory for corn and soybean based on USDA NASS database.
- Added new saline water algal biomass cultivation and hydrothermal liquefaction biofuel conversion pathway with high-protein coproduct.
- Added new pathways for soybean protein concentrate, whey concentrate, and alfalfa meal, which can be replaced by algal high-protein coproduct.
- Updated CO2 capture and transport options in algae tab based on NETL and IECM data sources.
- Added AEZ-EF SOC modeling, besides CENTURY-based modeling, to CCLUB for biofuel LUC GHG simulations.
- Added hydrogen production via methane pyrolysis using NG and RNG pathways for central plants.
- Added electrolyzer embodied emissions option for hydrogen production via low temperature PEM electrolysis and high temperature SOEC electrolysis.
- Added capture and utilization of coal mine methane for several downstream end use pathways.
- Updated the modeling of MSW landfilling and added incineration, composting, and anaerobic digestion to business-as-usual MSW management practices.
- Updated animal manure management pathways.
- Added renewable gas (RNG) to methanol pathways (hydrogen as a coproduct) with four different waste feedstock options (wastewater sludge, swine manure, food waste, and fats, oil, and grease) for RNG production.
- Changed the energy source used for RNG production from in-situ RNG to fossil NG and grid electricity.
R&D GREET 2
- Added vehicle cycle analysis of a large agricultural tractor considering several powertrains, as well as full cradle to grave life cycle analysis using the well-to-wheel results from R&D GREET1.
- Added embodied emissions for small modular reactors and multi-purpose canisters for spent nuclear fuel disposal.
- Expanded the end-of-life recycling capabilities of R&D GREET2 by including additional materials for such evaluation.
- Updated the nickel production inventory from laterite ores by disaggregating it across different process stages and updated SOx emissions for nickel production from sulfide ores based on available data.
- Incorporated inventory for US-domestic lithium-chemical production (Li2CO3 and LiOH) from sedimentary ores and brines (via direct lithium extraction) based on prefeasibility studies from commercial producers.
- Incorporated the inventory and environmental impacts associated with lithium-ion battery recycling across multiple cathode chemistries and recycling technologies from Argonne’s EverBatt model into R&D GREET, providing users the capability to determine environmental impacts as a function of share of cathode/cathode precursor production from virgin and recycled feedstocks.
- Updated the bill-of-materials of the balance-of-plant systems for three electrolyzer technologies (solid oxide, alkaline, and proton exchange membrane) to provide a comprehensive assessment of their embodied emissions in the context of hydrogen production.
- Updated the bill-of-materials for lithium-ion batteries for light-, medium-, and heavy-duty vehicles based on the most recent version of Argonne’s BatPaC model (BatPaC 5.1).
- Updated vehicle mass and characteristics of light-, medium-, and heavy-duty vehicles based on the latest simulation results from Argonne’s Autonomie.
- Enhanced vehicle modeling in R&D GREET2 through the utilization of sheet and extruded aluminum in place of the prior wrought aluminum aggregation.
- Developed a battery module which serves as a user-friendly dashboard to examine existing lithium ion batteries in R&D GREET in a single location to evaluate and compare their environmental impacts.
For more information on these updates, please use the following link: (674KB pdf)
|