Characterization by TG/DTG/DSC and FTIR of frying and fish oil residues to obtain biodiesel

Mothé, Cheila G.; Castro, Bruno César S. de; Mothé, Michelle G.

doi:10.1007/s10973-011-1795-z

Cited by 31 publications

(13 citation statements)

References 6 publications

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“…On the other hand, Mothé et al [51] determined the optimal reaction conditions for transesterification of waste frying oil and fish by varying the reaction time, amount of catalyst, and temperature and have determined which of these variables exert a greater influence on the reaction yield. So, they found that the amount of catalyst was this variable for the transesterification of waste of the fish oil.…”

Section: Other Waste Animal Lipidsmentioning

confidence: 99%

Valorization of Wastes for Biodiesel Production: The Brazilian Case

Nascimento¹,

Oliveira²,

Oliveira³

et al. 2019

Biofuels - Challenges and Opportunities

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This chapter intends to bring an overview about the Brazilian researches and their contributions to the production of biodiesel from wastes. Currently, the main obstacles to spread the use of biodiesel are its high cost of production and the competition between biodiesel and food industries. So, the use of wastes plays an important role in reducing the biodiesel costs and reusing the materials that have no other applications, as deodorization residues, neutralization soap sticks, and animal fats, among others. Then, we present a review about Brazilian studies involving waste oils and fatty-acid-rich raw materials that helped the advancement in this field of knowledge during the last few years.

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Section: Other Waste Animal Lipidsmentioning

confidence: 99%

Valorization of Wastes for Biodiesel Production: The Brazilian Case

Nascimento¹,

Oliveira²,

Oliveira³

et al. 2019

Biofuels - Challenges and Opportunities

View full text Add to dashboard Cite

show abstract

“…The FT-IR technique which detects the infrared absorbance of molecules due to their vibrational modes is a sensitive and very selective method especially for organic molecules. It is therefore widely used for investigation of the decomposition of polymers [2] or biomass samples [3]. Upon heating, ceramic and inorganic samples release mostly gases like H 2 O, NH 3 , CO 2 , or SO 2 which can also be detected and distinguished via their characteristic infrared spectra.…”

Section: Introductionmentioning

confidence: 99%

“…Another advantage compared to stand-alone TG instruments is the possibility of measuring samples with significantly larger volume and mass in an STA instrument. Sample sizes of several cm 3 and sample masses of several grams are possible revealing a resolution of the smallest effects in the ppm range [7].…”

Section: Introductionmentioning

confidence: 99%

“…The relatively small FT-IR gas cell of the FT-IR spectrometer ''alpha'' with a volume of 5.8 cm 3 and an optical path length of 7 cm was made from stainless steel and has single ZnSe windows at both ends which restrict the spectral range of operation between about 500 and 6,000 cm -1 . Nickel-coated aluminum alloy will be investigated as cell material in the future in order to improve the chemical inertness and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…FT-IR acquisition was carried out at a resolution of 4 cm -1 and 16 scans were averaged for one FT-IR spectrum where one scan took about 1 s. Just the sample CaCO 3 was measured with a higher time resolution using only 4 scans per spectrum.…”

Section: Introductionmentioning

confidence: 99%

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A novel direct coupling of simultaneous thermal analysis (STA) and Fourier transform-infrared (FT-IR) spectroscopy

Strobel¹,

Neumann²,

Rager

et al. 2013

J Therm Anal Calorim

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Evolved gas analysis (EGA) from thermal analyzers such as thermogravimetry (TG) or simultaneous thermal analysis (STA) which refers to simultaneous TG-DSC is well established since it greatly enhances the value of TG or TG-DSC results. The sensitive and selective FT-IR technique is in particular useful for the analysis of organic molecules but also for infrared active permanent gases evolved during most decomposition processes. The coupling interface between thermal analyzers and FT-IR spectrometers usually consists of heated adapters and a flexible, heated transfer line. In this work, a novel direct coupling of an STA instrument and an FT-IR spectrometer without a transfer line is presented. A very small FT-IR spectrometer is directly mounted on top of the STA furnace leading to a compact and fully integrated STA-FT-IR coupling system. The possibilities and the value of simultaneous STA-FT-IR measurements are demonstrated for organic, biomass, and ceramic samples in the temperature range between room temperature and about 1,500°C. Various samples from the field of inorganics and organics-especially polymers-were furthermore measured showing the advantages of the direct STA-FT-IR coupling compared to state-of-the-art STA-FT-IR coupling using a heated transfer line: we found that the time delay caused by the volume of the transfer line itself is rather negligible whereas a significantly better correlation between gas detection and TG results was observed in case of some highly condensable decomposition gases. Aspects of quantification of evolved gases are furthermore discussed as well as the known nonlinearity of FT-IR detection at higher gas concentrations.

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