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An ideal feedstock, kusum (Schleichera triguga) for preparation of biodiesel: Optimization of parameters

机译：用于制备生物柴油的理想原料kusum（Schleichera triguga）：参数优化

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摘要

Kusum (Schleichera triguga), a non-edible oil bearing plant has been used as an ideal feedstock for biodiesel development in the present study. Various physical and chemical parameters of the raw oil and the fatty acid methyl esters derived have been tested to confirm its suitability as a biodiesel fuel. The fatty acid component of the oil was tested by gas chromatography. The acid value of the oil was determined by titration and was found to 21.30 mg KOH/g which required two step transesterification. Acid value was brought down by esterification using sulfuric acid (H_2SO_4) as a catalyst. Thereafter, alkaline transesterification was carried out using potassium hydroxide (KOH) as catalyst for conversion of kusum oil to its methyl esters. Various parameters such as molar ratio, amount of catalyst and reaction time were optimized and a high yield (95%) of biodiesel was achieved. The high conversion of the feedstock into esters was confirmed by analysis of the product on gas chromatograph-mass spectrometer (GC-MS). Viscosity and acid value of the product biodiesel were determined and found to be within the limits of ASTM D 6751 specifications. Elemental analysis of biodiesel showed presence of carbon, hydrogen, oxygen and absence of nitrogen and sulfur after purification. Molar ratio of methanol to oil was optimized and found to be 10:1 for acid esterification, and 8:1 for alkaline transesterification. The amounts of H_2SO_4 and KOH, 1% (v/v) and 0.7% (w/w), respectively, were found to be optimum for the reactions. The time duration of 1 h for acid esterification followed by another 1 h for alkaline transesterification at 50 ± 0.5 ℃ was optimum for synthesis of biodiesel.
机译：Kusum（Schleichera triguga）（一种非食用油植物）已被用作本研究中生物柴油开发的理想原料。已测试了粗油和衍生的脂肪酸甲酯的各种物理和化学参数，以确认其适合用作生物柴油燃料。油的脂肪酸成分通过气相色谱法测试。通过滴定确定油的酸值，发现其为21.30mg KOH / g，这需要两步酯交换。使用硫酸（H_2SO_4）作为催化剂通过酯化降低酸值。此后，使用氢氧化钾（KOH）作为催化剂进行碱性酯交换反应，以将kusum油转化为其甲酯。优化了诸如摩尔比，催化剂量和反应时间等各种参数，并获得了高产率（95％）的生物柴油。通过在气相色谱-质谱仪（GC-MS）上分析产物，证实了原料向酯的高转化率。测定了产品生物柴油的粘度和酸值，发现其在ASTM D 6751规范的范围内。生物柴油的元素分析显示纯化后存在碳，氢，氧，而没有氮和硫。优化了甲醇与油的摩尔比，发现酸酯化反应的摩尔比为10：1，碱性酯交换反应的摩尔比为8：1。发现H_2SO_4和KOH的量分别对于反应是最佳的，分别为1％（v / v）和0.7％（w / w）。对于生物柴油的合成，酸酯化的时间为1 h，然后在50±0.5℃下进行碱性酯交换的时间为1 h。

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  • 来源
    《Fuel》 |2010年第7期|p.1470-1474|共5页
  • 作者

    Y.C. Sharma; Bhaskar Singh;

  • 作者单位

    Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India;

    rnDepartment of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    acid value; biodiesel; molar ratio; transesterification; viscosity;

    机译：酸值生物柴油摩尔比例;酯交换黏度;

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