Application of green hydrogen with theoretical and empirical approaches of alkaline water electrolysis: Life cycle-based techno economic and environmental assessments of renewable urea synthesis |
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| Affiliation: | 1. School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea;2. Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea;3. Carbon Neutrality Demonstration and Research Center,Ulsan National Institute of Science and Technology, 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea;1. School of Management Science and Engineering, Dongbei University of Finance and Economics, Dalian, 116000, China;2. School of Marxism, Dalian University of Foreign Languages, Dalian, 116000, China;3. Tehran Branch, Islamic Azad University, Tehran, Iran;1. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, PR China;2. Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, PR China;1. Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, China;2. Sino-Danish College, University of Chinese Academy of Science, 100049, Beijing, China;3. The Hempel Foundation Coatings Science and Technology Centre, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DTU, Building 229, DK-2800, Kgs. Lyngby, Denmark |
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| Abstract: | Alkaline water electrolysis which is the most commercialized and mature technology of water electrolysis was researched to improve performance by the Korea Institute of Energy Research (KIER). In line with the trend of energy shift, renewable urea production through hydrogen production from alkaline water electrolysis was proposed in this work. To validate the process modeling of renewable urea production and hydrogen performance analysis with I–V curves was assessed. Economic and life cycle assessments were conducted to provide quantitative guidelines for renewable urea production. Absolutely, the influential factor of unit urea production cost was hydrogen from alkaline water electrolysis and environmental assessment results as well. Moreover, the guidelines for renewable urea production were provided through cost estimation and life cycle assessment. In summary, hydrogen production from alkaline water electrolysis had a significant impact on urea production and for this reason, research on alkaline water electrolysis should continue for further development. |
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| Keywords: | Urea production Renewable energy Alkaline water electrolysis Process simulation Economic analysis Life cycle assessment |
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