scholarly journals Studies on Thermal Degradation Behavior of Siliceous Agriculture Waste (Rice Husk, Wheat Husk and Bagasse)

2015 ◽  
Vol 17 (3) ◽  
pp. 47-51 ◽  
Author(s):  
Syed H. Javed ◽  
Umair Aslam ◽  
Mohsin Kazmi ◽  
Masooma Rustam ◽  
Sheema Riaz ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Rice Husk ◽  
Acid Treatment ◽  
Proximate Analysis ◽  
Degradation Behavior ◽  
Agriculture Waste ◽  
Pure Silica ◽  
Thermal Degradation Behavior ◽  
Residual Weight ◽  
Wheat Husk

Abstract Various siliceous agriculture waste (SAW) such as rice husk, wheat husk and bagasse have been investigated to study their thermal degradation behavior using Thermogravimetric Analyzer (TGA) technique. The focus of this research is to conduct TGA of raw and acid treated (20% HCl & 1M H2SO4) SAW at heating rate 10°C/min in the atmosphere of nitrogen. The results were analyzed on the basis of thermograms and it was inferred that 24 hours soaking with 20% HCl prior to thermal degradation enhanced the percent weight loss. The process also improved the percentage of residual weight of SAW indicating the extraction of amorphous silica with increased purity. The effect of acid treatment was verified by determining chemical composition of SAW samples before and after soaking with 20% HCl. Proximate analysis, thermal degradation temperature ranges and percentage of residual weight at 800°C for each of rice husk, wheat husk and bagasse were also quantified to observe the thermal degradation behavior. XRF analysis was performed to observe the effect of acid treatment for extraction of pure silica.

scholarly journals Effect of demineralization on the physiochemical structure and thermal degradation of acid treated indigenous rice husk

2016 ◽  
Vol 18 (3) ◽  
pp. 117-121 ◽  
Author(s):  
Umair Aslam ◽  
Naveed Ramzan ◽  
Tanveer Iqbal ◽  
Mohsin Kazmi ◽  
Aamir Ikhlaq
Keyword(s):  
Thermal Degradation ◽  
Rice Husk ◽  
Alkaline Earth ◽  
Ash Content ◽  
Ftir Spectra ◽  
Alkaline Earth Metals ◽  
Degradation Behavior ◽  
Heating Value ◽  
Sem Micrographs ◽  
Thermal Degradation Behavior

Abstract Energy generation from biomass presents some serious problems like slagging, fouling and corrosion of boilers. To address these problems, demineralization of biomass is performed using different leaching agents. This study is focused on determining the influence of leaching agents and leaching time on the physiochemical structure of rice husk during demineralization. Dilute (5% wt) solutions of HCl and H2SO4 were used for the demineralization of rice husk separately with leaching time of 15, 60 and 120 minutes. It is shown that H2SO4 exhibited higher removal of alkali and alkaline earth metals (AAEM) comparatively as depicted by the 34.2% decrease in ash content along with an increase of 7.10% in the heating value. The acid has been seen to induce more notable changes in physiochemical structure as depicted by the FTIR spectra and SEM micrographs. The thermal degradation behavior of the demineralized rice husk has also been reported.

scholarly journals Thermal degradation behavior and flammability of polyurethanes blended with poly(bispropoxyphosphazene)

1999 ◽  
Vol 66 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Pin-Sheng Wang ◽  
Wen-Yen Chiu ◽  
Leo-Wang Chen ◽  
Bar-Long Denq ◽  
Trong-Ming Don ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior

Thermal degradation behavior of PLA composites containing bis DOPO phosphonates

2016 ◽  
Vol 639 ◽  
pp. 84-90 ◽  
Author(s):  
Qifeng Chang ◽  
Lijuan Long ◽  
Wentao He ◽  
Shuhao Qin ◽  
Jie Yu
Keyword(s):  
Thermal Degradation ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior
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