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用于生物柴油生产的某种藻类的培养条件优化及NiFeO@SiO/MgO磁性纳米催化剂的催化性能

Optimization of culture conditions of sp. algae and catalytic performance of a NiFeO@SiO/MgO magnetic nano-catalyst for biodiesel production.

作者信息

Abazari Peyman, Masoum Saeed, Hosseini Tafreshi Seyed Ali

机构信息

Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan Kashan Iran

Department of Biotechnology, Faculty of Chemistry, University of Kashan Kashan Iran.

出版信息

RSC Adv. 2024 Aug 19;14(36):26152-26165. doi: 10.1039/d4ra02904f. eCollection 2024 Aug 16.

DOI:10.1039/d4ra02904f
PMID:39161435
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11332359/
Abstract

This study aims to optimize the lipid content of sp. for high-yield biodiesel production. Three factors affecting the culture conditions, namely salinity, nitrogen concentration, and light intensity, were selected and their effects on the maximum lipid content were investigated using the Box Behnken design. The results showed that the maximum lipid content (32.7% of algal dry weight) was obtained in the algal samples cultured under the optimized conditions. A core-shell magnetic nano-catalyst, NiFeO@SiO/MgO, was synthesized and used to produce biodiesel the transesterification reaction. The nano-catalyst was characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffraction analysis (XRD), vibrating sample magnetometry (VSM), elemental mapping techniques, transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). Using the Box Behnken design and keeping the temperature constant, the molar ratio of methanol to oil, the amount of catalyst, and the time were optimized to achieve the maximum yield of biodiesel. The maximum yield of biodiesel was 95.3% under the optimal conditions.

摘要

本研究旨在优化用于高产生物柴油生产的 藻种的脂质含量。选择了影响培养条件的三个因素，即盐度、氮浓度和光照强度，并使用Box-Behnken设计研究了它们对最大脂质含量的影响。结果表明，在优化条件下培养的藻类样品中获得了最大脂质含量（占藻类干重的32.7%）。合成了一种核壳磁性纳米催化剂NiFeO@SiO/MgO，并用于通过酯交换反应生产生物柴油。通过场发射扫描电子显微镜（FE-SEM）、能量色散X射线光谱（EDS）、X射线粉末衍射分析（XRD）、振动样品磁强计（VSM）、元素映射技术、透射电子显微镜（TEM）和傅里叶变换红外光谱（FT-IR）对纳米催化剂进行了表征。使用Box-Behnken设计并保持温度恒定，优化了甲醇与油的摩尔比、催化剂用量和时间，以实现生物柴油的最大产率。在最佳条件下，生物柴油的最大产率为95.3%。

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