Gaikwad, Ankur DnyaneshwarAnkur DnyaneshwarGaikwad2025-09-232025-09-232025https://publica.fraunhofer.de/handle/publica/496192Introduction: Carbon capture features as the most important climate change mitigation measure. However, the energy intensity of capture processes hinder their adoption on a larger scale. The monoethanolamine-based carbon capture technology (MEA-CC) is used to capture CO2 from industrial CO2 sources, while multiple direct air capture technologies to capture CO2 from atmosphere are currently in development phase. The low-temperature direct air capture technology (LT-DAC) as well as MEA-CC units require heat input at temperatures below 150 oC. Industrially, heat input at these temperatures is provided by steam produced in natural gas or coal-fueled boilers. High-temperature heat pumps provide a cleaner alternative to boilers for generating thermal energy for such applications. Research question: My contribution evaluates application of high-temperature heat pumps to the two carbon capture technologies. I primarily aim to identify environmental issues of significance and/or process optimization opportunities by sound application of lifecycle assessment. Method: A base case is evaluated first using the Environmental Footprint 3.1 impact assessment methodologies. A scenario analysis compares them to the reference case when natural gas-fueled boiler provides the heat for the respective technologies. Uncertainty analysis techniques account for uncertainties in the processes, background systems and assumptions. Trade-offs among the various impact categories are explored, providing insights on possible supplementary technologies to remedy the trade-offs of using heat pumps for carbon capture systems. Results: Preliminary calculations reveal that the heat pump efficiency and electricity supply influence the climate change impacts of the systems with heat pumps significantly. Trade-offs are noted in impact categories like eutrophication. The climate change impacts were found to be sensitive to the assumption of methane slippages in background modeling the supply chain of natural gas fuel in the reference systems. Conclusion: Lifecycle assessments provide holistic perspective on environmental impacts, benefits and trade-offs in implementing process technologies.enLife Cycle AssessmentCarbon captureheat pumppresentation