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A two-step continuous ultrasound assisted production of biodiesel fuel from waste cooking oils: A practical and economical approach to produce high quality biodiesel fuel
Bioresource Technology Số 14, năm 2010 (Tập 101, trang 5394-5401)
ISSN: 9608524
ISSN: 9608524
DOI: 10.1016/j.biortech.2010.02.060
Tài liệu thuộc danh mục: Scopus
Article
English
Từ khóa: Ambient temperatures; Bio-diesel fuel; Biodiesel production; EN 14214; Fatty acid methyl ester; High quality; Low frequency; Molar ratio; Residence time; Transesterification reaction; Two-step process; Waste cooking oil; Biodiesel; Catalysts; Esters; Fatty acids; Methanol; Potassium; Potassium hydroxide; Synthetic fuels; Transesterification; Ultrasonics; Fuel oils; biodiesel; fatty acid ester; glycerol; methanol; potassium hydroxide; biofuel; ester; fatty acid; hydroxide; oil; potassium derivative; vegetable oil; biofuel; bioreactor; biotechnology; catalyst; methanol; ultrasonics; article; bioenergy; biofuel production; biotechnological production; catalyst; domestic waste; environmental temperature; priority journal; quality control; reactor; transesterification; ultrasound; biotechnology; catalysis; chemistry; esterification; procedures; temperature; time; Biofuels; Biotechnology; Catalysis; Esterification; Esters; Fatty Acids; Glycerol; Hydroxides; Methanol; Oils; Plant Oils; Potassium Compounds; Temperature; Time Factors; Ultrasonics; Biofuels; Biotechnology; Catalysis; Esterification; Esters; Fatty Acids; Glycerol; Hydroxides; Methanol; Oils; Plant Oils; Potassium Compounds; Temperature; Time Factors; Ultrasonics
Tóm tắt tiếng anh
A transesterification reaction of waste cooking oils (WCO) with methanol in the presence of a potassium hydroxide catalyst was performed in a continuous ultrasonic reactor of low-frequency 20 kHz with input capacity of 1 kW, in a two-step process. For the first step, the transesterification was carried out with the molar ratio of methanol to WCO of 2.5:1, and the amount of catalyst 0.7 wt.%. The yield of fatty acid methyl esters (FAME) was about 81%. A yield of FAME of around 99% was attained in the second step with the molar ratio of methanol to initial WCO of 1.5:1, and the amount of catalyst 0.3 wt.%. The FAME yield was extremely high even at the short residence time of the reactants in the ultrasonic reactor (less than 1 min for the two steps) at ambient temperature, and the total amount of time required to produce biodiesel was 15 h. The quality of the final biodiesel product meets the standards JIS K2390 and EN 14214 for biodiesel fuel. � 2010 Elsevier Ltd. All rights reserved.
