Biodiesel Production from Euglena Sanguinea Using Catalyst Support Extracted From Steel Slag-Optimization and Kinetic Study

IF 2.3 4区 化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2024-08-07 DOI:10.1007/s10562-024-04790-z
Shriram Manikandan, Lokesh Sakthivel, Abieswar Parthiban, Roshan Cheerakkoda Baiju, Sindhu Subramanian
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Abstract

Extracting useful materials from the effluents help in cost reduction of catalyst synthesis for transesterification reaction. Hence, in this study, CaO-SiO2 and MgO–SiO2 catalysts were prepared in which the nano–silica was extracted from the steel slag. The properties of the slag, extracted nano-silica and synthesized catalysts were characterized in detail. Biodiesel was synthesized from Euglena sanguinea. Optimization of various parameters of transesterification process was done by RSM using CCD. The presence of biodiesel was confirmed with the help of 1H-NMR, GC–MS and FTIR spectroscopy. The synthesized MgO–SiO2 and CaO–SiO2 catalyst possessed a surface area of 31 and 15 m2/g respectively. The optimized parameters obtained using CaO–SiO2 were methanol to oil ratio of 9:1, catalyst weight % of 5 and duration of 3 h. The optimized parameters of the MgO–SiO2 catalyst were–methanol to oil ratio of 9:1, catalyst weight % of 6 and reaction time of 5.5 h. The biodiesel yield obtained by using CaO–SiO2 and MgO–SiO2 corresponds to 87 and 83. 5% respectively. The loss of yield after reusing 5 times was 20 and 10% for CaO–SiO2 and MgO–SiO2 respectively. Kinetic models were compared with respect to their fit with experimental data. Pseudo–first order kinetics was a better fit for the experimental data using MgO–SiO2. While using CaO–SiO2 as a catalyst, non-linear kinetic model was found to fit with the experimental data better.

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利用从钢渣中提取的催化剂载体从褐藻中生产生物柴油--优化和动力学研究
从废水中提取有用的材料有助于降低酯交换反应催化剂合成的成本。因此,本研究制备了 CaO-SiO2 和 MgO-SiO2 催化剂,其中从钢渣中提取了纳米二氧化硅。研究人员详细分析了钢渣、提取的纳米二氧化硅和合成催化剂的特性。用褐藻合成生物柴油。使用 CCD 的 RSM 对酯交换过程的各种参数进行了优化。利用 1H-NMR、GC-MS 和 FTIR 光谱证实了生物柴油的存在。合成的 MgO-SiO2 和 CaO-SiO2 催化剂的表面积分别为 31 和 15 m2/g。CaO-SiO2 催化剂的优化参数为甲醇与油的比例为 9:1,催化剂重量百分比为 5,反应时间为 3 小时;MgO-SiO2 催化剂的优化参数为甲醇与油的比例为 9:1,催化剂重量百分比为 6,反应时间为 5.5 小时。5% 。重复使用 5 次后,CaO-SiO2 和 MgO-SiO2 的产率损失分别为 20% 和 10%。比较了动力学模型与实验数据的拟合程度。使用 MgO-SiO2 时,伪一阶动力学对实验数据的拟合效果更好。在使用 CaO-SiO2 作为催化剂时,发现非线性动力学模型与实验数据的拟合效果更好。
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来源期刊
Catalysis Letters
Catalysis Letters 化学-物理化学
CiteScore
5.70
自引率
3.60%
发文量
327
审稿时长
1 months
期刊介绍: Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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