Structural differences between wood species: Evidence from chemical composition, FTIR spectroscopy, and thermogravimetric analysis

2012 ◽  
Vol 126 (S1) ◽  
pp. E337-E344 ◽  
Author(s):  
Matheus Poletto ◽  
Ademir J. Zattera ◽  
Ruth M. C. Santana
Keyword(s):  
Chemical Composition ◽  
Thermogravimetric Analysis ◽  
Ftir Spectroscopy ◽  
Wood Species ◽  
Structural Differences

scholarly journals Thermogravimetric Analysis and Pyrolysis Kinetics of Malaysian Wood Species

2020 ◽  
Vol 811 ◽  
pp. 012003
Author(s):  
Sulaiha Ali ◽  
Siti Aslina Hussain ◽  
Mohd. Zahirasri Mohd Tohir ◽  
Ahmad Ainuddin Nuruddin
Keyword(s):  
Thermogravimetric Analysis ◽  
Wood Species ◽  
Pyrolysis Kinetics ◽  
Kinetics Of

scholarly journals Influence of different temperature regimes at torrefaction of chicken litter on yield and properties of products

2019 ◽  
Vol 114 ◽  
pp. 06007
Author(s):  
Olga Larina ◽  
Yana Pudova
Keyword(s):  
Chemical Composition ◽  
Thermogravimetric Analysis ◽  
Liquid Fraction ◽  
Experimental Studies ◽  
Calorific Value ◽  
Solid Residue ◽  
Optimum Temperature ◽  
Volume Yield ◽  
Temperature Regimes ◽  
Chicken Litter

The purpose of the research is study the influence of the torrefaction process on the fuel properties of the chicken litter. Experimental studies on lab-scale system at five temperature regimes of torrefaction (220, 240, 260, 280, and 300 °C) with a holding time determined using thermogravimetric analysis were conducted. The products of the torrefaction are solid residue, non-condensable gases, and tar. For the feedstock and torrefied material the elemental composition, the lower calorific value, hygroscopicity limit and bulk density are determined. For liquid fraction the analysis of the chemical composition is carried out. The properties of non-condensable gases as chemical composition and calorific value - are investigated. Mass yields of the solid residue and tar, and specific volume yield of the non-condensable gases are presented. The conclusion about the optimum temperature regime for torrefaction of chicken litter based on the results of experimental studies is made.

scholarly journals Quality Properties and Pyrolysis Characteristics of Cassava Rhizome Pellets Produced by Alternating between Pelletizing and Torrefaction

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 930
Author(s):  
Nitipong Soponpongpipat ◽  
Paisan Comsawang ◽  
Suwat Nanetoe
Keyword(s):  
Chemical Composition ◽  
Thermogravimetric Analysis ◽  
Energy Density ◽  
Bulk Density ◽  
Moisture Absorption ◽  
Pyrolysis Temperature ◽  
Quality Properties ◽  
Pyrolysis Characteristics ◽  
Durability Index ◽  
The Difference

This work investigated quality properties of pellets of raw cassava rhizome (P-RC), pellets of pelletized cassava rhizome followed by torrefaction (T-CP), and pellets of torrefied cassava rhizome followed by pelletizing (P-TC). Torrefaction was conducted at temperatures of 230, 250, and 280 °C for 30 min. Pyrolysis characteristics of T-CP and P-TC at torrefied temperatures of 230 and 250 °C were studied using thermogravimetric analysis. It was found that at the similar torrefied temperature, P-TC had a higher bulk density, energy density, and pellet durability than that of T-CP and P-RC while T-CP had a higher HHV and moisture absorption than P-TC and P-RC. The bulk density of P-TC was 1.13–1.19 and 1.33–1.52 times higher than that of P-RC and T-CP, respectively. The HHV of T-CP was 1.07 and 1.29 times higher than P-TC and P-RC, respectively. The energy density of P-TC was 1.24–1.56 and 1.20–1.41 times higher than that of P-RC and T-CP. In terms of Pellet Fuel Institute (PFI) standard, the durability index of P-RC, P-TC, and T-CP at torrefied temperatures of 230 and 250 °C was acceptable. However, dramatically low and unacceptable durability index was found in case of T-CP at torrefied temperature of 280 °C. The moisture absorption of P-TC was lower than that of P-RC and T-CP. Finally, T-CP had a lower pyrolysis temperature and had a much lower solid yield than that of P-TC. Variation of pyrolysis characteristics indicated the difference in chemical composition between T-CP and P-TC.

scholarly journals Rapid Quantitative Analysis of Forest Biomass Using Fourier Transform Infrared Spectroscopy and Partial Least Squares Regression

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Gifty E. Acquah ◽  
Brian K. Via ◽  
Oladiran O. Fasina ◽  
Lori G. Eckhardt
Keyword(s):  
Fourier Transform ◽  
Chemical Composition ◽  
Ftir Spectroscopy ◽  
Least Squares ◽  
Partial Least Squares ◽  
Partial Least Squares Regression ◽  
Fourier Transform Infrared ◽  
Least Squares Regression ◽  
Forest Logging ◽  
Logging Residue

Fourier transform infrared reflectance (FTIR) spectroscopy has been used to predict properties of forest logging residue, a very heterogeneous feedstock material. Properties studied included the chemical composition, thermal reactivity, and energy content. The ability to rapidly determine these properties is vital in the optimization of conversion technologies for the successful commercialization of biobased products. Partial least squares regression of first derivative treated FTIR spectra had good correlations with the conventionally measured properties. For the chemical composition, constructed models generally did a better job of predicting the extractives and lignin content than the carbohydrates. In predicting the thermochemical properties, models for volatile matter and fixed carbon performed very well (i.e.,R2> 0.80, RPD > 2.0). The effect of reducing the wavenumber range to the fingerprint region for PLS modeling and the relationship between the chemical composition and higher heating value of logging residue were also explored. This study is new and different in that it is the first to use FTIR spectroscopy to quantitatively analyze forest logging residue, an abundant resource that can be used as a feedstock in the emerging low carbon economy. Furthermore, it provides a complete and systematic characterization of this heterogeneous raw material.

A study of structural differences between liver cancer cells and normal liver cells using FTIR spectroscopy

2015 ◽  
Vol 1099 ◽  
pp. 18-23 ◽  
Author(s):  
Daping Sheng ◽  
Fangcheng Xu ◽  
Qiang Yu ◽  
Tingting Fang ◽  
Junjun Xia ◽  
...  
Keyword(s):  
Liver Cancer ◽  
Ftir Spectroscopy ◽  
Cancer Cells ◽  
Normal Liver ◽  
Liver Cells ◽  
Liver Cancer Cells ◽  
Structural Differences

Thermogravimetric analysis of wood, holocellulose, and lignin from five wood species

2012 ◽  
Vol 109 (3) ◽  
pp. 1163-1167 ◽  
Author(s):  
Teresa Sebio-Puñal ◽  
Salvador Naya ◽  
Jorge López-Beceiro ◽  
Javier Tarrío-Saavedra ◽  
Ramón Artiaga
Keyword(s):  
Thermogravimetric Analysis ◽  
Wood Species

Chemical composition of particles from traditional burning of Pakistani wood species

2015 ◽  
Vol 121 ◽  
pp. 35-41 ◽  
Author(s):  
Imran Shahid ◽  
Magdalena Kistler ◽  
Azam Mukhtar ◽  
Carlos Ramirez-Santa Cruz ◽  
Heidi Bauer ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Wood Species
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