Conversion of biodiesel synthesis waste to hydrogen in membrane reactor: Theoretical study of glycerol steam reforming |
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| Affiliation: | 1. Boreskov Institute of Catalysis SB RAS, 630090, Novosibirsk, pr. Ac. Lavrentieva, 5, Russia;2. National Research Tomsk Polytechnic University, 634050, Tomsk, Lenin av., 30, Russia;1. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia;2. Centre of Excellence for Advanced Research in Fluid Flow (CARIFF), Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia;3. Rare Earth Research Centre (RERC), Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia;4. School of Chemical Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;1. College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;2. Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China;3. School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, PR China;1. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 5 pr. Lavrentieva, Novosibirsk 630090, Russia;2. Novosibirsk State Technical University, 20 pr. Marksa, Novosibirsk 630073, Russia |
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| Abstract: | Hydrogen production from waste glycerol, mainly producible as a by-product of biodiesel synthesis, is investigated as an attractive opportunity for exploiting renewable energy sources for further applications. Glycerol steam reforming using membrane technology was modeled by taking into accounts the maim transport phenomena, thermodynamic criteria and chemical process kinetics. A sensitivity analysis of operating conditions was made for key performance metrics such as glycerol conversion, hydrogen yield and hydrogen recovery. Glycerol conversion intensifies with enhancement of operating pressure and temperature, whereas high feed molar ratio and sweep ratio have limiting effect. Hydrogen permeation and subsequently, hydrogen recovery facilitates with increasing sweep gas ratio and sweep gas temperature. Hydrogen recovery enhances from 70% to 99% with increasing temperature from 350 to 500 °C at feed molar ratio of 3. Also, hydrogen recovery improves from 50% to 71% with increasing sweep ratio from 0 to 20 at 350 °C and 1 bar. |
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| Keywords: | Glycerol steam reforming Biodiesel Transport phenomena Modeling Hydrogen |
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