Novel 1H low field nuclear magnetic resonance applications for the field of biodiesel

Biotechnology for Biofuels

Paula Berman¹  Adi Leshem¹  Oren Etziony¹  Ofer Levi³  Yisrael Parmet³  Michael Saunders²  Zeev Wiesman¹ 

[1] The Phyto-Lipid Biotechnology Lab, Departments of Biotechnology, Energy and Environmental Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105, Israel

[2] Department of Management Science and Engineering, Stanford University, Stanford, CA, USA

[3] Department of Industrial Engineering and Management, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva, 84105, Israel

关键词: Transesterification;    Laplace inversion;    Chemometrics;    Biodiesel physical properties;    Biodiesel;    ¹H low field nuclear magnetic resonance;   

Others  :  798095
DOI  :  10.1186/1754-6834-6-55

 received in 2012-11-17, accepted in 2013-03-22,  发布年份 2013

【 摘 要 】

Background

Biodiesel production has increased dramatically over the last decade, raising the need for new rapid and non-destructive analytical tools and technologies. ¹H Low Field Nuclear Magnetic Resonance (LF-NMR) applications, which offer great potential to the field of biodiesel, have been developed by the Phyto Lipid Biotechnology Lab research team in the last few years.

Results

Supervised and un-supervised chemometric tools are suggested for screening new alternative biodiesel feedstocks according to oil content and viscosity. The tools allowed assignment into viscosity groups of biodiesel-petrodiesel samples whose viscosity is unknown, and uncovered biodiesel samples that have residues of unreacted acylglycerol and/or methanol, and poorly separated and cleaned glycerol and water. In the case of composite materials, relaxation time distribution, and cross-correlation methods were successfully applied to differentiate components. Continuous distributed methods were also applied to calculate the yield of the transesterification reaction, and thus monitor the progress of the common and in-situ transesterification reactions, offering a tool for optimization of reaction parameters.

Conclusions

Comprehensive applied tools are detailed for the characterization of new alternative biodiesel resources in their whole conformation, monitoring of the biodiesel transesterification reaction, and quality evaluation of the final product, using a non-invasive and non-destructive technology that is new to the biodiesel research area. A new integrated computational-experimental approach for analysis of ¹H LF-NMR relaxometry data is also presented, suggesting improved solution stability and peak resolution.

【 授权许可】

   
2013 Berman et al.; licensee BioMed Central Ltd.

【 图 表 】

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