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Direct production of biodiesel from high-acid value Jatropha oil with solid acid catalyst derived from lignin.

Pua FL, Fang Z, Zakaria S, Guo F, Chia CH - Biotechnol Biofuels (2011)

Bottom Line: The effects of catalyst loading, reaction temperature and oil-to-methanol molar ratio, on the catalytic activity of the esterification were investigated.It was found that 96.3% biodiesel yield from non-pretreated Jatropha oil with high-acid value (12.7 mg KOH/g) could be achieved.This single-step process could be a potential route for biodiesel production from high-acid value oil by simplifying the procedure and reducing costs.

View Article: PubMed Central - HTML - PubMed

Affiliation: Universiti Kebangsaan Malaysia, School of Applied Physics, Faculty of Science and Technology, 43600 Bangi, Selangor, Malaysia. zhenFANG@xtbg.ac.cn.

ABSTRACT

Background: Solid acid catalyst was prepared from Kraft lignin by chemical activation with phosphoric acid, pyrolysis and sulfuric acid. This catalyst had high acid density as characterized by scanning electron microscope (SEM), energy-dispersive x-ray spectrometry (EDX) and Brunauer, Emmett, and Teller (BET) method analyses. It was further used to catalyze the esterification of oleic acid and one-step conversion of non-pretreated Jatropha oil to biodiesel. The effects of catalyst loading, reaction temperature and oil-to-methanol molar ratio, on the catalytic activity of the esterification were investigated.

Results: The highest catalytic activity was achieved with a 96.1% esterification rate, and the catalyst can be reused three times with little deactivation under optimized conditions. Biodiesel production from Jatropha oil was studied under such conditions. It was found that 96.3% biodiesel yield from non-pretreated Jatropha oil with high-acid value (12.7 mg KOH/g) could be achieved.

Conclusions: The catalyst can be easily separated for reuse. This single-step process could be a potential route for biodiesel production from high-acid value oil by simplifying the procedure and reducing costs.

No MeSH data available.


Related in: MedlinePlus

Scanning electron microscope (SEM) images of raw Kraft lignin. This shows a typical SEM result for Kraft lignin from Sigma-Aldrich.
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Figure 1: Scanning electron microscope (SEM) images of raw Kraft lignin. This shows a typical SEM result for Kraft lignin from Sigma-Aldrich.

Mentions: The surface morphology of the char was studied by scanning electron microscope (SEM) analysis. Figure 1 shows a typical morphology for Kraft lignin powders obtained from Sigma-Aldrich (Shanghai, China). They have a rounded or semispherical shape with many open volumes on the rough surface. According to a previous report [26], such morphology might be due to the concentration process of extracting lignin from black liquor. Regardless, a spherical shape can be thermodynamically more stable compared to other particle shapes.


Direct production of biodiesel from high-acid value Jatropha oil with solid acid catalyst derived from lignin.

Pua FL, Fang Z, Zakaria S, Guo F, Chia CH - Biotechnol Biofuels (2011)

Scanning electron microscope (SEM) images of raw Kraft lignin. This shows a typical SEM result for Kraft lignin from Sigma-Aldrich.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3275475&req=5

Figure 1: Scanning electron microscope (SEM) images of raw Kraft lignin. This shows a typical SEM result for Kraft lignin from Sigma-Aldrich.
Mentions: The surface morphology of the char was studied by scanning electron microscope (SEM) analysis. Figure 1 shows a typical morphology for Kraft lignin powders obtained from Sigma-Aldrich (Shanghai, China). They have a rounded or semispherical shape with many open volumes on the rough surface. According to a previous report [26], such morphology might be due to the concentration process of extracting lignin from black liquor. Regardless, a spherical shape can be thermodynamically more stable compared to other particle shapes.

Bottom Line: The effects of catalyst loading, reaction temperature and oil-to-methanol molar ratio, on the catalytic activity of the esterification were investigated.It was found that 96.3% biodiesel yield from non-pretreated Jatropha oil with high-acid value (12.7 mg KOH/g) could be achieved.This single-step process could be a potential route for biodiesel production from high-acid value oil by simplifying the procedure and reducing costs.

View Article: PubMed Central - HTML - PubMed

Affiliation: Universiti Kebangsaan Malaysia, School of Applied Physics, Faculty of Science and Technology, 43600 Bangi, Selangor, Malaysia. zhenFANG@xtbg.ac.cn.

ABSTRACT

Background: Solid acid catalyst was prepared from Kraft lignin by chemical activation with phosphoric acid, pyrolysis and sulfuric acid. This catalyst had high acid density as characterized by scanning electron microscope (SEM), energy-dispersive x-ray spectrometry (EDX) and Brunauer, Emmett, and Teller (BET) method analyses. It was further used to catalyze the esterification of oleic acid and one-step conversion of non-pretreated Jatropha oil to biodiesel. The effects of catalyst loading, reaction temperature and oil-to-methanol molar ratio, on the catalytic activity of the esterification were investigated.

Results: The highest catalytic activity was achieved with a 96.1% esterification rate, and the catalyst can be reused three times with little deactivation under optimized conditions. Biodiesel production from Jatropha oil was studied under such conditions. It was found that 96.3% biodiesel yield from non-pretreated Jatropha oil with high-acid value (12.7 mg KOH/g) could be achieved.

Conclusions: The catalyst can be easily separated for reuse. This single-step process could be a potential route for biodiesel production from high-acid value oil by simplifying the procedure and reducing costs.

No MeSH data available.


Related in: MedlinePlus