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Home > Applications > Energy Technologies > Biofuels Analysis

Biofuels Analysis

Corn

As the research and use of biofuels increases, measurement techniques such as UV-Vis, NIR and Raman spectroscopy have become highly valued for qualifying materials in the lab and on the line. Ocean Optics modular spectrometers offer researchers, OEM developers and QA/QC professionals with flexible, robust analytical tools for various biofuels application needs.

For example, Raman spectrometers can be integrated into biodiesel refining processes to assess raw materials, monitor process streams and confirm the quality of the final product. UV-Vis and NIR spectrometers also can be used for applications such as monitoring the breakdown of starch in corn and other plants used in biofuels and determining the concentration of biodiesel in biodiesel blends.

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Jaz Spectrometer

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Example Setup: Raman Analysis of Biofuels

Overview

Raman spectroscopy offers a number of benefits for the identification and characterization of biofuels such as biodiesel and biomethanol. Like fiber optic UV-Vis and NIR absorbance spectroscopy, Raman is rapid, non-destructive and allows the user to take the measurement to the sample.

Ocean Optics offers a range of fully integrated Raman systems for handheld, laboratory and process applications, as well as modular setups anchored by our high-sensitivity, back-thinned CCD arrays. One such modular setup is described here.

Spectrometer

We offer a QE series spectrometer that’s preconfigured for 785 nm Raman analysis, making it an excellent option for chemical identification and fingerprinting. The spectrometer is preset with a grating optimized for Raman response, gold mirrors in the optical bench to increase sensitivity, and a 50 µm slit to maintain good resolution. The setup provides coverage from ~780-1100 nm.

Excitation Laser and Sampling Optics

For 785 nm Raman excitation, we recommend one of our LASER-785 series multimode lasers. Options are available with FC or SMA 905 fiber-coupled output power. Custom excitation wavelength ranges are also available.

Raman accessories typically include a probe and sample holder. In the example setup, we selected an RIP-RPB-785-SMA-FC and the RIP-PA-SH Raman sample holder. Safety glasses (LASER-GL-ML1), which are suitable for use with 785 nm, 808 nm and 1064 nm lasers, complete the system.

Software

OceanView spectroscopy software supports Raman experiments, but for more advanced analysis we recommend an add-on chemometrics package such as the RAM-ANIQ-LAB analytical chemistry option.

Raman Analysis of Biofuels System Components

QEPRO-RAMAN QE series spectrometer preconfigured for 785 nm Raman analysis; modular options for 532 nm and other wavelengths are also available
LASER-785-LAB-ADJ 785 nm diode laser for Raman excitation; 532 nm and other options are available
RIP-PA-SH Raman sample holder
LASER-GL-ML1 Laser safety glasses block 785 nm/808 nm/1064 nm lasers; OD 7+, VLT 45% Green
OceanView Spectrometer operating software
RAM-ANIQ-LAB Single-license chemometrics package from Analyze IQ

Example Setup: Biofuels Analysis

Spectra-biofuels-analysis-potato-sample

Analysis of the spectral characteristics of potatoes may be useful in development of biofuels.

Spectra-biofuels-analysis-ethanol-sample

Ethanol produced from sugar cane is often blended with other substances to produce clean-burning fuels.

Spectra-biofuels-analysis-diesel-and-corn-oil

Raman techniques are effective in identifying spectral differences among standard diesel, biodiesel and diesel blends.

Spectra-biofuels-analysis-corn-oil

Raman is an effective technique for identifying spectral features of corn oil.

Monitor the breakdown of starch in corn Biofuels Analysis Biofuels Analysis Biofuels Analysis Biofuels Analysis
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