André Bardow


Last Name

Bardow

First Name

André

ORCID

0000-0002-3831-0691

Organisational unit

09696 - Bardow, André / Bardow, André

Search Results

Publications 1 - 10 of 746
  • Automating Life Cycle Assessment from Chemical Process Simulations
    Item type: Other Conference Item
    Spiekermann, Lukas; Sewani, Hitesh; Lochmann, Sebastian; et al. (2024)
    Advancing sustainability requires knowledge on the environmental impacts of chemicals. For this purpose, life cycle assessment is the preferred method, but usually carried out by manually extracting data from process simulation software and transferring data to life cycle assessment software. This process is very labor-intensive and error-prone. Here, we bridge the gap between process simulation and life cycle assessment by automated data extraction from process simulators to life cycle assessment software. Our tool currently links the process simulators Aspen Plus, Aspen HYSYS, and AVEVA Process Simulation to the open-source tools Brightway/Activity Browser for life cycle assessment. The tool is exemplified using openly available case studies and simulation files for bio-based and CO2-based processes. Simulation studies can be combined to, e.g., integrated CO2 capture and utilization chains within life cycle assessment software. Our tool directly integrates process simulations results into life cycle inventory databases with easy workflows and could thereby enable the generation of more life cycle assessments of chemical processes.
  • Indirect Electrochemical Cooling: Model-Based Performance Analysis and Working Fluid Selection
    Item type: Journal Article
    Liebl, Lana; Bardow, André; Roskosch, Dennis (2024)
    Industrial & Engineering Chemistry Research
    The rising energy demand for cooling and heating requires efficient and sustainable technologies. Vapor-compression systems represent the state of the art but suffer from downscaling limits and maintenance needs. These disadvantages may be overcome by recently proposed electrochemical processes. However, their potential has not been explored systematically. This work quantifies the thermodynamic potential of an indirect electrochemical cooling process that replaces the vapor compressor of a standard refrigeration cycle with an electrochemical cell. An equilibrium-based process model evaluates the process performance of a working fluid, depending on its composition and temperatures in the process. After screening an extensive database for possible working fluids, an electrochemical cooling process is analyzed and optimized for the coefficient of performance (COP) to operate between two heat reservoirs at 20 °C (heat source) and 35 °C (heat sink). The majority of the investigated working fluids yield smaller or similar efficiencies than vapor-compression refrigeration, with COPs between 3.0 and 4.0. However, 35 promising working fluids that achieve higher efficiencies are identified with a COP up to 9.63, corresponding to 49% of Carnot. These working fluids are worthy of further investigation as their use in the electrochemical cooling process possibly outperforms standard vapor-compression refrigeration.
  • Decarbonizing copper production by power-to-hydrogen: A techno-economic analysis
    Item type: Journal Article
    Röben, Fritz T.C.; Schöne, Nikolas; Bau, Uwe; et al. (2021)
    Journal of Cleaner Production
    Electrifying energy-intensive processes is currently intensively explored to cut greenhouse gas (GHG) emissions through renewable electricity. Electrification is particularly challenging if fossil resources are not only used for energy supply but also as feedstock. Copper production is such an energy-intensive process consuming large quantities of fossil fuels both as reducing agent and as energy supply. Here, we explore the techno-economic potential of Power-to-Hydrogen to decarbonize copper production. To determine the minimal cost of an on-site retrofit with Power-to-Hydrogen technology, we formulate and solve a mixed-integer linear program for the integrated system. Under current techno-economic parameters for Germany, the resulting direct CO abatement cost is 201 EUR/t CO -eq for Power-to-Hydrogen in copper production. On-site utilization of the electrolysis by-product oxygen has a substantial economic benefit. While the abatement cost vastly exceeds current European emission certificate prices, a sensitivity analysis shows that projected future developments in Power-to-Hydrogen technologies can greatly reduce the direct CO abatement cost to 54 EUR/t CO -eq. An analysis of the total GHG emissions shows that decarbonization through Power-to-Hydrogen reduces the global GHG emissions only if the emission factor of the electricity supply lies below 160 g CO -eq/kWh . The results suggest that decarbonization of copper production by Power-to-Hydrogen could become economically and environmentally beneficial over the next decades due to cheaper and more efficient Power-to-Hydrogen technology, rising GHG emission certificate prices, and further decarbonization of the electricity supply. 2 2 2 2 2 el
  • Integrating CO2 Electrolyzers in Electrochemical Plants: Heat Integration, Techno-Economic Analysis, and Life Cycle Assessment of the Production of 1-Butene from CO2
    Item type: Other Conference Item
    Spiekermann, Lukas; Lee, Mi Gyoung; Wicks, Joshua; et al. (2024)
    2024 AIChE Annual Meeting Proceedings
    Efforts to mitigate climate change have increased interest in utilizing CO2 as a sustainable feedstock within the chemical industry [1]. Recent progress in electrochemical CO2 reduction, facilitated using renewable electricity sources, presents a promising avenue for synthesizing valuable C2+ chemicals [2]. While the initial focus has been on the development of electrolyzers, recent research has broadened to include process design and downstream separation techniques [3]. However, the question remains how to integrate feedback from process design back into electrolyzer development. This work introduces a feedback loop from process design to electrolyzer development. The loop combines process modeling, heat integration, techno-economic analysis, and life cycle assessment. The resulting workflow is demonstrated for the CO2 electroreduction to ethylene and subsequent dimerization to 1-butene [4]. From the analysis, we derive development targets for CO2 electrolyzers. We assess the significance of cell voltage and Faradaic efficiency, highlighting that single-pass conversion minimally impacts overall process feasibility. Moreover, we emphasize the benefits of integrating electrolyzers with downstream and upstream units. In summary, we combine electrolyzer development and process systems engineering perspectives by bridging the scales from electrolyzers to integrated processes with economic and sustainability objectives. This study illustrates the integration of a process-oriented approach into technology advancement for an electrified chemical industry.
  • Life cycle assessment of carbon capture and utilization by mineralization
    Item type: Other Conference Item
    Ostovari, Hesam; Bardow, André (2019)
  • Integrated design of processes and mixtures using molecule superstructures
    Item type: Conference Poster
    Rehner, Philipp; Schilling, Johannes; Bardow, André (2024)
  • Optimal Mixtures for Organic Rankine Cycles: Integrated Design of Process and Mixture using PC-SAFT
    Item type: Other Conference Item
    Schilling, Johannes; Entrup, Marten; Hopp, Madlen; et al. (2019)
    Proceedings of the 5th International Seminar on ORC Power Systems
  • Reduktion des experimentellen Aufwandes zur Beschreibung von Hochdruck-VLE mittels semi-prädiktiver PCP-SAFT
    Item type: Conference Poster
    Liebergesell, Bastian; Kaminski, Sebastian; Pauls, Christoph; et al. (2014)
  • Comparison of Processes for Producing OME1 - An Efficient, Economic, and Environmentally Sustainable e-Fuel?
    Item type: Other Conference Item
    Burre, Jannik; Bongartz, Dominik; Deutz, Sarah; et al. (2019)
    Sustainable Engineering Forum 2019
  • The Dos and Donts of Life Cycle Assessment for Carbon Capture and Utilization
    Item type: Conference Poster
    von der Assen, Niklas; Jung, Johannes; Bardow, André (2012)
Publications 1 - 10 of 746