期刊
CHEMOSPHERE
卷 292, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.133516
关键词
Waste gypsum; Renewable fuel; Alkaline catalyst; Pyrolytic catalysis
资金
- Royal Golden Jubilee Ph.D. (RGJ) program, Thailand Research Fund (TRF), Thailand [PHD/0150/2561]
- Research and Graduate Studies, Khon Kaen University
- Research Center for Environmental and Hazardous Substance Management (EHSM), Khon Kaen University
- Faculty of Engineering, Khon Kaen University
The study investigates the pyrolysis of palm oil using a sustainable CaO-based catalyst derived from waste gypsum and explores the effects of Mg doping and reaction temperature. The highest renewable light fuel volume was achieved with 10% MgCO3 content and at a reaction temperature of 525 degrees C.
The thermochemical conversion of abundant renewable resources through pyrolytic catalysis cracking (PCC) is one of the most promising technologies for producing green biofuels. In this study, the pyrolysis of palm oil was investigated over a sustainable CaO-based catalyst derived from waste gypsum. PCC was conducted in a continuous packed-bed reactor under atmospheric pressure without purge gas. The effects of Mg doping and reaction temperature were also examined. A wet ball milling process was used to prepare the well-mixed catalysts and to subsequently form a heterojunction structure between the CaO and MgO particles. CaO was synthesized using the Ca(OH)(2) derived from the reaction between gypsum and sodium hydroxide. The pyrolytic oil was separated from the crude oil to remove water and other impurities. The pyrolytic oil was then distilled following ASTM D86, and the three separated products were classified as bio-gasoline, bio-kerosene, and biodiesel. The highest renewable light fuel volume (bio-gasoline and bio-kerosene) of about 75% (74 %wt.) was obtained at a reaction temperature of 525 degrees C with 10% MgCO3 content. The percent volume of light fuel increased with increasing reaction temperature. Renewable light fuel production over the Mg-doped CaO-based catalyst was related to both the Mg content and reaction temperature.
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