Catalytic hydrotreating of pyro-oil derived from green microalgae spirulina the (Arthrospira) plantensis over NiMo catalysts impregnated over a novel hybrid support |
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| Affiliation: | 1. Department of Tool and Materials Engineering, Faculty of Engineering, King Mongkut''s University of Technology Thonburi, Bangkok, Thailand;2. Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom, 73000, Thailand;3. Department of Chemical Engineering, Faculty of Engineering, Mahidol University, 25/25 Phutthamonthon 4 Road, Salaya, Phutthamonthon, Nakorn Pathom, 73170, Thailand;4. Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Thailand;5. The Joint Graduate School of Energy and Environment, King Mongkut''s University of Technology Thonburi, Thailand;1. School of Environmental Engineering, University of Seoul, Seoul 02504, South Korea;2. Department of Chemistry, Sungkyunkwan University, Suwon 16410, South Korea;3. Biomass and Wastes to Energy Laboratory, Korea Institute of Energy Research, Daejeon 34129, South Korea;4. Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea;5. Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea;6. School of Chemical and Biomolecular Engineering, Pusan National University, Busan, 46241, South Korea;7. Department of Environmental Engineering, Sunchon National University, Suncheon 57922, South Korea;1. C.I.R.S.A., Università di Bologna, Campus di Ravenna, via S.Alberto 163, I-48123 Ravenna, Italy;2. Istituto Motori-CNR, Napoli, Italy |
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| Abstract: | Upgrading of pyrolysis bio-oil by a novel catalytic hydrotreating process, including hydrodeoxygenation (HDO) and hydrodenitrogenation (HDN) was found as an effective technical method for the improvement of biofuel characteristics. In this study, for the first time, the performance of a novel meso-microporous composite material, HMS-ZSM-5, as a support on the catalytic activity of NiMo-based catalysts in the bio-oil hydrotreating was evaluated. The experiments were carried out in a flow fixed-bed reactor at the temperature range of 300–360 °C, 30 bar pressure, and LHSV = 4 h-1. Also, the results were and compared with those of HMS, ZSM-5, and γ-Al2O3 supports. For all catalysts, the increase in temperature resulted in the enhancement of HDO and HDN reactions efficiency. NiMo/HMS-ZSM-5 possessed a high acid property which contributed to the removal of oxygen and nitrogen from bio-oil, with the conversion of 84.10% and 69.60%, respectively. Therefore, the novel catalyst of this study represented much superior upgrading performances compared with those of stand-alone NiMo/HMS and NiMo/ZSM-5 catalysts and also the conventional catalyst of NiMo/γ-Al2O3. |
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| Keywords: | Hydrotreating Biofuel Hydrodeoxygenation Hydrodenitrogenation Bio-oil Meso-microporous composite |
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