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Quiroga E, Cifuentes B, Moltó J, Ortuño N, Conesa J, Davó-Quiñonero A, Cobo M. Integration of steam gasification and catalytic reforming of lignocellulosic biomass as a strategy to improve syngas quality and pollutants removal. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 147:48-59. [PMID: 35623261 DOI: 10.1016/j.wasman.2022.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/18/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
Residual biomass gasification is a promising route for the production of H2-rich syngas. However, the simultaneous formation of pollutants such as light hydrocarbons (HCs), benzene, toluene and xylenes (BTEX), polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) during gasification must be controlled. As a result, this study evaluated the effect of temperature and catalytic reforming over a Rh-Pt/CeO2-SiO2 catalyst during steam gasification of sugarcane residual biomass on syngas composition and pollutant removal. The above was carried out in a horizontal moving reactor, an Amberlite XAD-2 polyaromatic resin was used to collect the contaminants and characterization of the catalyst was performed. In this study, a concentration of up to 37 mol% of H2, a yield of 23.1 g H2 kg-1biomass, and a H2/CO ratio ≥2 were achieved when gasification and reforming were integrated. In addition, the catalyst characterization showed that Rh-Pt/CeO2-SiO2 was not susceptible to sintering and favored the formation of hydroxyl groups that promoted CO oxidation, thereby increasing the H2/CO ratio, as confirmed by in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). At 800 °C, where a high H2 yield was obtained, 209 g Nm-3 of light HCs and BTEX, 10.9 g Nm-3 of PAHs, and 32.5 ng WHO-TEQ Nm-3 of PCDD/Fs were formed after gasification. Interestingly, after catalytic reforming, 62% of light HCs and BTEX, 60% of PAHs, and 94% of PCDD/Fs were removed, leading to cleaner syngas with properties that allow it to be used in a wide range of energy applications.
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Affiliation(s)
- Eliana Quiroga
- Energy, Materials and Environment Laboratory, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia
| | - Bernay Cifuentes
- Faculty of Engineering, Chemical Engineering, Universidad de La Salle, Carrera 2 # 10-70, Bogotá, Colombia
| | - Julia Moltó
- Chemical Engineering Department, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain; University Institute of Chemical Process Engineering, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain
| | - Nuria Ortuño
- Chemical Engineering Department, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain; University Institute of Chemical Process Engineering, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain
| | - Juan Conesa
- Chemical Engineering Department, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain; University Institute of Chemical Process Engineering, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain
| | - Arantxa Davó-Quiñonero
- Department of Inorganic Chemistry, University of Alicante, Carretera de San Vicente del Raspeig, s/n, Alicante 03690, Spain
| | - Martha Cobo
- Energy, Materials and Environment Laboratory, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia.
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