Abstract
Hydrodeoxygenation (HDO) of waste cooking oil (WCO) and trapped grease over sulfide catalysts was examined to produce high quality transportation fuel from low-grade resources. The hydrodeoxygenation of waste cooking oils was carried out in a high pressure of 30 and 60 bar and high temperature of 300 – 400 °C in a batch reactor autoclave. NiMo/γ-Al2O3 catalyst was prepared and for the first time tested in hydroprocessing of waste cooking oil. The content of NiMo/γ-Al2O3 in each catalyst was about wCo 5 wt.%. A maximum of 77,97 % green diesel yield was achieved at nearly complete conversion of waste cooking oil using NiMo/γ-Al2O3 at temperature of 400°C, pressure 60 bar and 4 hours of reaction time. The oxygen content was decreased from 14,25 wt.% to 13,35 wt.%, at temperature of 400°C, pressure of 30 bar and 1 hour of reaction time. The Hydrodeoxygenation process was much influenced by temperature, pressure, and time.
Highlights
Today energy needs continue to rise but inversely proportional to energy substitutes such as petroleum, natural gas that can not be optimized
The amount of available energy sources currently is sourced from fossil fuels accounted for 94% of the national energy mix mix, comprising 47% of petroleum, 26% coal and 21% natural gas [1]
Fuel oil will continue to be prefered in the final energy demand, because in addition to the fact that fuel-based technologies are more efficient, fuel prices can still continue to compete if compared to other fuels such as coal and natural gas
Summary
Today energy needs continue to rise but inversely proportional to energy substitutes such as petroleum, natural gas that can not be optimized. Fuel oil will continue to be prefered in the final energy demand, because in addition to the fact that fuel-based technologies are more efficient, fuel prices can still continue to compete if compared to other fuels such as coal and natural gas. In 2007 used cooking oil (MGB) from various sources as much as 3.9 tons has not been fully utilized. This gives a huge opportunity to make Indonesia as a country that has a strong energy resistance by processing it into greendiesel with hydrodeoxygenation method, in addition to producing high fuel quality compared to biodiesel and petrodiesel, environmentally friendly [3]
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