TG-FTIR analysis of bio-oil and its pyrolysis/gasification property

Thermogravimetry - Fourier transform infrared spectrometry (TG-FTIR) technique was applied to achieve thermal evaporation, decomposition and combustion of bio-oil and on-line analysis of the formed products. The experiments were performed under the N2/O2atmosphere with different O2contents using a bio-oil sample derived from rice husk. According to the TG results, the thermogravimetric process included three stages, the evaporation of light volatiles, the decomposition of heavy components, and the combustion of the char residues. The kinetic calculation revealed that the activation energy values of the evaporation and decomposition stages would not be greatly affected by the O2content, while the activation energy values of the combustion stages would decrease as the rising of the O2content. Moreover, the FTIR results indicated that the major products in the evaporation stage were the water and organic volatile compounds. Whereas the products in the combustion stage were mainly CO2and H2O, together with a little CO.

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TG-FTIR Analysis of Wood Based Bio-Oil

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.2661 ◽

2011 ◽

Vol 347-353 ◽

pp. 2661-2665

Author(s):

Jin Xing Peng ◽

Bei Bei Yan ◽

Guan Yi Chen ◽

Xin Li Zhu ◽

Chao Wang

Keyword(s):

Fourier Transform ◽

Infrared Spectroscopy ◽

Fast Pyrolysis ◽

Combustion Process ◽

Gaseous Product ◽

Combustion Mechanism ◽

Ftir Analysis ◽

Gaseous Products ◽

Second Stage ◽

Bio Oil

The combustion mechanism of bio-oil derived from wood fast pyrolysis was investigated by thermogravimetric analysis coupled with Fourier transform infrared spectroscopy (TG–FTIR) in flowing air. The results show that the combustion process of bio-oil consists of two main consecutive stages at a low heating rate. The combustion reaction becomes more and more intense from the first to the second stage. The release of volatiles occurs mainly at 80～200 °C and 350～500°C, and the gaseous products in each stage are different. The main products in the first stage are H2O with a few low molecule weight compounds, such as methanol, formic acid, etc. In the second stage, some new volatiles such as CO2, CO and CH4, etc. are present. Among the above volatiles, CO2 is the dominant gaseous product in the whole combustion process. The concentrations of CO2 and CO keep increasing, and reach the maximum at about 450 °C. Over 570°C, there are few products released at the end of the combustion process.

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Stable production of platform chemicals from the continuous hydrodeoxygenation of a raw bio-oil using enhanced carbon-based catalysts

10.1021/scimeetings.0c01440 ◽

2020 ◽

Author(s):

Idoia Hita ◽

Tomas Cordero-Lanzac ◽

Francisco J. Garcia-Mateos ◽

Jose Rodriguez-Mirasol ◽

Tomas Cordero ◽

...

Keyword(s):

Platform Chemicals ◽

Stable Production ◽

Bio Oil ◽

Carbon Based

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Stable production of platform chemicals from the continuous hydrodeoxygenation of a raw bio-oil using enhanced carbon-based catalysts

10.1021/scimeetings.0c01439 ◽

2020 ◽

Author(s):

Idoia Hita ◽

Tomas Cordero-Lanzac ◽

Francisco J. Garcia-Mateos ◽

Jose Rodriguez-Mirasol ◽

Tomas Cordero ◽

...

Keyword(s):

Platform Chemicals ◽

Stable Production ◽

Bio Oil ◽

Carbon Based

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Pyrolysis of brown algae (Bifurcaria Bifurcata) in a stainless steel tubular reactor: From a review to a case study

Progress in Agricultural Engineering Sciences ◽

10.1556/446.14.2018.1.2 ◽

2018 ◽

Vol 14 (1) ◽

pp. 31-60 ◽

Cited By ~ 1

Author(s):

M. Y. Guida ◽

F. E. Laghchioua ◽

A. Hannioui

Keyword(s):

Particle Size ◽

Stainless Steel ◽

Flow Rate ◽

Brown Algae ◽

Tubular Reactor ◽

Nitrogen Flow ◽

Nitrogen Flow Rate ◽

Bifurcaria Bifurcata ◽

Bio Oil

This article deals with fast pyrolysis of brown algae, such as Bifurcaria Bifurcata at the range of temperature 300–800 °C in a stainless steel tubular reactor. After a literature review on algae and its importance in renewable sector, a case study was done on pyrolysis of brown algae especially, Bifurcaria Bifurcata. The aim was to experimentally investigate how the temperature, the particle size, the nitrogen flow rate (N2) and the heating rate affect bio-oil, bio-char and gaseous products. These parameters were varied in the ranges of 5–50 °C/min, below 0.2–1 mm and 20–200 mL. min–1, respectively. The maximum bio-oil yield of 41.3wt% was obtained at a pyrolysis temperature of 600 °C, particle size between 0.2–0.5 mm, nitrogen flow rate (N2) of 100 mL. min–1 and heating rate of 5 °C/min. Liquid product obtained under the most suitable and optimal condition was characterized by elemental analysis, 1H-NMR, FT-IR and GC-MS. The analysis of bio-oil showed that bio-oil from Bifurcaria Bifurcata could be a potential source of renewable fuel production and value added chemicals.

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