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首页> 外文期刊>International journal of green energy >EFFECT OF FREE FATTY ACIDS AND SHORT CHAIN ALCOHOLS ON CONVERSION OF WASTE COOKING OILTOBIODIESEL
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EFFECT OF FREE FATTY ACIDS AND SHORT CHAIN ALCOHOLS ON CONVERSION OF WASTE COOKING OILTOBIODIESEL

机译：游离脂肪酸和短链醇对废料蒸煮油转化为生物柴油的影响

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摘要

In this article, the transesterification of three types of waste cooking oil (WCO) with methanol and ethanol was studied using alkali catalyzed process. The catalyst used in this study was sodium hydroxide. The effects of temperature, catalyst amount, alcohol to oil ratio, and the time of reaction on the yield were studied. The temperature and the catalyst amount were the most important factors affecting the yield of hiodiesel. Also the process exhibited some sensitivity to the level of free fatty acids (FFA) in the WCO and to the type of alcohol. The yields of methyl esters varied from 97% with the lowest acidity (0.4% FFA WCO) to 76% with the highest acidity (3.25% FFA WCO). The ethyl esters yields were lower and the difference increased with the level of FFA in the oil, the maximum yield was 95% and 73% with the lowest and the medium acidities respectively and no reaction was registered with the highest one. The chromatographic analysis of the produced hiodiesel showed high contents of fatty acid methyl esters varying from 96.5% to 98%. The physical-chemical characteristics of produced hiodiesel were studied and compared to the European norm, EN 14214.
机译：在本文中，使用碱催化方法研究了三种类型的废食用油（WCO）与甲醇和乙醇的酯交换反应。本研究中使用的催化剂是氢氧化钠。研究了温度，催化剂用量，醇油比和反应时间对产率的影响。温度和催化剂用量是影响柴油产量的最重要因素。此外，该方法对WCO中的游离脂肪酸（FFA）含量和酒精类型也表现出一定的敏感性。甲酯的收率从酸度最低的97％（FFA WCO为0.4％）到酸度最高的3.2％FFA WCO为76％。随着油中FFA含量的增加，乙酯收率降低，差值增加，最大收率分别为95％和73％，酸度为最低和中度，没有反应记录为最高。生成的柴油的色谱分析表明，高含量的脂肪酸甲酯含量从96.5％至98％不等。研究了生产的柴油的理化特性，并将其与欧洲标准EN 14214进行了比较。

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