Liquid hydrocarbon fuels from fish oil industrial residues by catalytic cracking

Abstract

International audienceIn the present work, catalytic cracking of fish oil industrial residue was investigated to study the effect of temperature, type of catalyst and the heating rate on the yield of organic liquid fraction (OLF) and its acid value. The highest bio-oil yield of 72% (wt.) was obtained at temperature range of 300-500 degrees C and heating rate of 10 degrees C/min with the mixture of Al2O3 and Na2CO3 as a catalyst. It was found that the mixture of Na2CO3 and MgSO4 as a catalyst gives lowest acid value of 8.75 mgKOH/goil and 68.1% of OLF yield. Furthermore, the acid value is reduced to 0.36 mgKOH/goil using Na2CO3 as an absorbent. The results show that the catalytic cracking process represents a sustainable method to produce bio-oil from fish oil industrial residues with physicochemical characteristics similar to the diesel fuel. Copyright (c) 2012 John Wiley & Sons, Ltd

Characterization of the liquid products obtained from Tunisian waste fish fats using the pyrolysis process

“…The comparison of the obtained results with those reported in the literature on the pyrolysis of waste fish oil indicates close liquid fraction yields (71.29 wt.% at 500°C and 72.83 wt.% at 525°C, respectively) [15,16]. However, Mrad et al have reported very low bio-oil yield (17.08 wt.%) since the major liquid fraction was formed by the aqueous fraction (54.21 wt.%) [15].…”

“…The obtained results are listed in Table 6. The produced bio-oil sample indicates an important heating value (9391 kcal/kg) close to those obtained for waste fish at 500°C (10,509 kcal/kg) and for lard at 550°C (around 9500 kcal/kg) bio-oils [14,15]. However, the obtained calorific value is lower than the Tunisian Diesel.…”

“…However, Mrad et al have reported very low bio-oil yield (17.08 wt.%) since the major liquid fraction was formed by the aqueous fraction (54.21 wt.%) [15]. This behavior is attributed to the high initial water content in the residual product after refining crude fish oil.…”

“…The fish wastes are mainly constituted of triglyceride that can be used as feedstock for biofuel production [15,16]. Fish biodiesel was tested as a partial and/or full in many countries such as Canada, India, Taiwan and Japan.…”

Obtenção de gasolina verde por destilação fracionada de produtos líquidos orgânicos oriundos do craqueamento térmico-catalítico usando diferentes porcentagens de catalisador

“…Porém, o conteúdo de fração aquosa em todas as frações destiladas não ultrapassou 1% em massa. Segundo Mrad et al (2013) [14], o carbonato de sódio é um dos catalisadores que quando utilizados no craqueamento de térmico-catalítico de gordura de peixe residual produzem o menor teor de fração aquosa no produto líquido orgânico. Além disso, o trabalho realizado previamente por Mancio et al (2016) [13] mostra que a fração aquosa é o produto do craqueamento térmico-catalítico do óleo de palma com carbonato de sódio que apresenta o menor rendimento.…”