Biodiesel synthesis from Jatropha curcas L. oil and ethanol in a continuous centrifugal contactor separator
Biodiesel synthesis from Jatropha curcas L. oil and ethanol in a continuous centrifugal contactor separator
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DOI：
10.1002/ejlt.201200173
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发表时间：
2013-01-01
影响因子：
2.7
通讯作者：
Heeres, Hero J.
中科院分区：
文献类型：
--
作者：
Abduh, Muhammad Yusuf;van Ulden, Wouter;Heeres, Hero J.
以乙醇钠为催化剂，在间歇式反应器和连续离心接触器分离器（CCCS）中研究了麻风树油合成脂肪酸乙酯（FAEE）的过程。研究了相关工艺变量（如转速、温度、催化剂浓度和乙醇与油的摩尔比）的影响。对于批次（70 摄氏度，600 rpm，0.8% w/w 乙醇钠）和 CCCS 反应器配置（60 ℃，2100 rpm，1% w/w 乙醇钠，油进料 28 毫升/分钟），FAEE 的最大产率为 98 mol%。最佳条件下CCCS中FAEE的体积生产率为112kgFAEE/m3液体?.?min。实际应用：麻风树灌木可产生非食用油，产量高达 1.5 吨/（公顷年），已知适合生物柴油合成。我们在此报道了一项以乙醇代替甲醇作为醇源合成麻风树生物柴油的实验研究。乙醇可以通过发酵从生物质中获得，因此是甲醇的绿色替代品。此外，在发展中国家，它比甲醇更容易获得。生物柴油合成在 CSSS 中进行，CSSS 是一种集反应和分离于一体的连续装置。由于其紧凑的尺寸、坚固性、操作灵活性和高容积生产率，该设备具有应用于小型移动生物柴油技术的潜力。
The synthesis of fatty acid ethyl esters (FAEE) from Jatropha curcas L. oil was studied in a batch reactor and a continuous centrifugal contactor separator (CCCS) using sodium ethoxide as the catalyst. The effect of relevant process variables like rotational speed, temperature, catalyst concentration, and molar ratio of ethanol to oil was investigated. Maximum yield of FAEE was 98?mol% for both the batch (70 degrees C, 600?rpm, 0.8% w/w of sodium ethoxide) and CCCS reactor configuration (60 degrees C, 2100?rpm, 1% w/w of sodium ethoxide, oil feed 28?mL/min). The volumetric production rate of FAEE in the CCCS at optimum conditions was 112?kgFAEE/m3liquid?.?min. Practical applications: The Jatropha curcas L. shrub produces a non-edible oil in yields up to 1.5?ton/(ha.?y), which is known to be suitable for biodiesel synthesis. We here report an experimental study on the synthesis of jatropha biodiesel using ethanol instead of methanol as the alcohol source. Ethanol is accessible from biomass by fermentation and as such a green alternative for methanol. In addition, it is more readily available in developing countries than methanol. Biodiesel synthesis was performed in a CSSS, a continuous device that integrates reaction and separation. The device has potential to be applied in small scale mobile biodiesel technology due to its compact size, robustness, flexibility in operation, and high volumetric productivities.