Hydrothermal liquefaction (HTL) of animal by-products: Influence of operating conditions
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http://hdl.handle.net/10045/97089
Títol: | Hydrothermal liquefaction (HTL) of animal by-products: Influence of operating conditions |
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Autors: | León, Milagros | Marcilla, Antonio | García, Angela N. |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Ingeniería Química |
Paraules clau: | Hydrothermal liquefaction | Animal by-products | Biocrude | Influence of variables |
Àrees de coneixement: | Ingeniería Química |
Data de publicació: | de novembre-2019 |
Editor: | Elsevier |
Citació bibliogràfica: | Waste Management. 2019, 99: 49-59. doi:10.1016/j.wasman.2019.08.022 |
Resum: | Hydrothermal liquefaction (HTL) of Animal By-Products (ABP) is a promising technology for their recycling and disposal. Different operating parameters have been studied to determine their influence on the process. Higher heating values of biocrudes ranging between 35 and 39 MJ/kg have been obtained showing a maximum yield of 61% at 225 °C. At low HTL temperature, the products are similar to those of rendering process and the biocrude is mainly formed by triglycerides and fatty acids in a 90:10 ratio, approximately. By increasing temperature, the free fatty acid yield increases, as well as amides and heterocyclic compounds as a result of the triglycerides and protein reactions. Between 250 and 290 °C a great difference in the composition of the biocrude obtained is observed. Water content also showed significant effects on the product yields. Large amounts of foams were obtained at low water contents that were minimised when it is increased. This is a very important feature to be considered for scaling up the phase separation process. Glycerine amount in the aqueous phase was remarkable, as a consequence of fat hydrolysis. Increasing pH to 9 increases the extraction of organics into the aqueous phase, whereas operating at pH 5 yields similar amounts of biocrude as compared with neutral pH, with a higher percentage of fatty acids. Reusing of the aqueous phase is necessary for the viability of the process and leads to increasing amounts of dissolved organics in the aqueous phase with the number of cycles, reaching a saturation level after three-four recycling rounds. |
Patrocinadors: | The research leading to these results has received funding from the European Community’s 7th Framework Programme (FP7-2007-2013) under Grant Agreement No. 603986. |
URI: | http://hdl.handle.net/10045/97089 |
ISSN: | 0956-053X (Print) | 1879-2456 (Online) |
DOI: | 10.1016/j.wasman.2019.08.022 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2019 Elsevier Ltd. |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1016/j.wasman.2019.08.022 |
Apareix a la col·lecció: | Investigacions finançades per la UE INV - GTP3 - Artículos de Investigación sobre Procesado de Polímeros |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2019_Leon_etal_WasteManag_final.pdf | Versión final (acceso restringido) | 844,51 kB | Adobe PDF | Obrir Sol·licitar una còpia |
2019_Leon_etal_WasteManag_revised.pdf | Versión revisada (acceso abierto) | 854,62 kB | Adobe PDF | Obrir Vista prèvia |
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