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The DOI matches its Crossref record; 18 of the 18 references it cites were found in a registry or an index.

Analyzing biodiesel: standards and other methods

Knothe, Gerhard·2006·Journal of the American Oil Chemists' Society

Abstract

Biodiesel occupies a prominent position among the alternatives to conventional petrodiesel fuel owing to various technical and economic factors. It is obtained by reacting the parent vegetable oil or fat with an alcohol)transesterification) in the presence of a catalyst to give the corresponding monoalkyl esters, which are defined as biodiesel. Because of the nature of the starting material, the production process, and subsequent handling, various factors can influence biodiesel fuel quality. Fuel quality issues are commonly reflected in the contaminants or other minor components of biodiesel. This work categorizes both the restricted species in biodiesel and the physical properties prescribed by the standards, and details the standard reference methods to determine them as well as other procedures. Other aspects of biodiesel analysis, including production monitoring and assessing biodiesel/petrodiesel blends, are also addressed. The types of analyses include chromatographic, spectroscopic, physical properties‐based, and wet chemical methods. The justifications for specifications in standards are also addressed.

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Citations

Cites

Show all 18 references

Research works printed but not linked: 42

  1. Mittelbach M., 2004, Biodiesel—The Comprehensive Handbook
  2. 10.1002/(SICI)1521-4133(199811)100:11<507::AID-LIPI507>3.0.CO;2-6 · doi:10.1002/(sici)1521-4133(199811)100:11<507::aid-lipi507>3.0.co;2-6
  3. 10.1007/BF02679605 · doi:10.1007/bf02679605
  4. 10.1080/10826079708005545 · doi:10.1080/10826079708005545
  5. 10.1007/BF02636255 · doi:10.1007/bf02636255
  6. Cvengroš J., 1994, Quality Control of Rapeseed Oil Methyl Esters by Determination of Acyl Conversion, Ibid., 71, 1349
  7. Cvengrošová Z., 1997, Rapeseed Oil Ethyl Esters as Alternative Fuels and Their Quality Control, Petrol. Coal, 39, 36
  8. Mariani C., 1991, Vegetable Oil Derivatives as Diesel Fuel. Analytical Aspects. Note 1: Determination of Methyl Esters, Mono‐, Di‐, and Triglycerides, Riv. Ital. Sostanze Grasse, 69, 549
  9. 10.1002/jhrc.1240150910 · doi:10.1002/jhrc.1240150910
  10. 10.1007/BF02274113 · doi:10.1007/bf02274113
  11. Mittelbach M., 1996, Simultaneous Gas Chromatographic Determination of Methanol and Free Glycerol in Biodiesel, Ibid., 42, 431
  12. Bondioli P., 1992, Vegetable Oil Derivatives as Diesel Fuel Substitutes. Analytical Aspects. Note 2: Determination of Free Glycerol, Riv. Ital. Sostanze Grasse, 69, 7
  13. Bondioli P., 1992, Vegetable Oil Derivatives as Diesel Fuel Substitutes. Analytical Aspects. Note 3: Determination of Methanol, Ibid., 69, 467
  14. 10.1016/0021-9673(94)00867-9 · doi:10.1016/0021-9673(94)00867-9
  15. 10.1365/s10337-004-0372-z · doi:10.1365/s10337-004-0372-z
  16. 10.1080/01483919008051790 · doi:10.1080/01483919008051790
  17. 10.1007/BF00324480 · doi:10.1007/bf00324480
  18. Lozano P., 1996, Measurement of Free Glycerol in Biofuels, Ibid., 354, 319
  19. Anon., 2003, Glycerine, Chem. Mark. Rep., 263, 12
  20. 10.1016/S0021-9673(99)00790-6 · doi:10.1016/s0021-9673(99)00790-6
  21. 10.1080/20014091076686 · doi:10.1080/20014091076686
  22. 10.1081/JLC-100100491 · doi:10.1081/jlc-100100491
  23. 10.1002/jhrc.1240201103 · doi:10.1002/jhrc.1240201103
  24. Mahajan S., 2006, Determining the Acid Number of Biodiesel, Ibid., 83, 567
  25. 10.1002/lipi.19970990205 · doi:10.1002/lipi.19970990205
  26. 10.1002/jhrc.1240160808 · doi:10.1002/jhrc.1240160808
  27. 10.1002/lipi.19940961004 · doi:10.1002/lipi.19940961004
  28. 10.1016/S0021-9673(94)89106-0 · doi:10.1016/s0021-9673(94)89106-0
  29. 10.1007/BF02540998 · doi:10.1007/bf02540998
  30. Neto P.R.C., 2004, Quantification of Soybean Oil Ethanolysis with 1H NMR, Ibid., 81, 1111
  31. Dimmig T., 1999, 13C‐NMR‐Spektroskopie zur Bestimmung von Umsatz und Reaktionskinetik der Umesterung von Triglyceriden zu Methylestern [13C‐NMR Spectroscopic Determination of the Conversion and Reaction Kinetics of Transesterification of Triglycerols to Methyl Esters], Chem. Tech. (Leipzig), 51, 326
  32. 10.1007/s11746-999-0068-5 · doi:10.1007/s11746-999-0068-5
  33. Knothe G., 2000, Monitoring the Turnover of a Progressing Transesterification Reaction by Fiber‐Optic NIR Spectroscopy with Correlation to 1H NMR Spectroscopy, Ibid., 77, 489
  34. Dubé M.A., 2004, A Comparison of Attenuated Total Reflectance‐FTIR Spectroscopy and GPC for Monitoring Biodiesel Production, Ibid., 81, 599
  35. 10.1016/j.talanta.2004.01.008 · doi:10.1016/j.talanta.2004.01.008
  36. Sadeghi‐Jorabchi H., 1994, Estimation of Biodiesel in Lubricating Oil Using Fourier Transform Infrared Spectroscopy Combined with a Mid‐Infrared Fibre Optic Probe, Spectrosc. Europe, 6, 16
  37. Siekmann R.W., 1982, Proc. Int. Conf. Plant and Vegetable Oils as Fuels, 209
  38. 10.1007/s00216-005-3405-z · doi:10.1007/s00216-005-3405-z
  39. 10.1365/s10337-005-0599-3 · doi:10.1365/s10337-005-0599-3
  40. 10.1016/j.chroma.2006.04.069 · doi:10.1016/j.chroma.2006.04.069
  41. Bondioli P., 1994, Vegetable Oil Derivatives as Diesel Fuel Substitutes. Analytical Aspects. Note 4: Determination of Biodiesel and Diesel Fuel in Mixture, Riv. Ital. Sostanze Grasse, 71, 287
  42. Bondioli P., 2003, The Evaluation of Biodiesel Quality in Commercial Blends with Diesel Fuel, Ibid., 80, 173

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Metadata

Authors
Knothe, G.
Venue
Journal of the American Oil Chemists' Society
Publisher
Wiley
Published
2006-10
Volume
83
Issue
10
Pages
823-833
ISSN
  • 0003-021X (ISSN-L)
  • 1558-9331
OpenAlex
W2094581262
Cited by
870
References
18
FWCI
13.16
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Analyzing biodiesel: standards and other methods. https://app.cochat.ai/papers/10.1007/s11746-006-5033-y
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Knothe, G. (2006). Analyzing biodiesel: standards and other methods. Journal of the American Oil Chemists' Society. https://doi.org/10.1007/s11746-006-5033-y

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