Torrefaction in the Presence of Oxygen and Carbon Dioxide: The Effect on Yield of Oil Palm Kernel Shell

Saadon, Shazleen; Uemura, Yoshimitsu; Mansor, Nurlidia

doi:10.1016/j.proche.2014.05.023

Cited by 43 publications

(22 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the present study, in contrast to the results obtained by Saadon et al 16 , the increase in permanent gases (CO and CO 2 )…”

Section: Volatile Products Of Torrefactioncontrasting

confidence: 99%

“…For the case of a higher torrefaction temperature of 270°C ( Figure 5B), it can be seen that with respect to the inert case, there is a fractional increase in production of all volatile components for 15,16 . However, in the present study, in contrast to the results obtained by Saadon et al 16 , the increase in permanent gases (CO and CO 2 )…”

Section: Volatile Products Of Torrefactionmentioning

confidence: 97%

See 1 more Smart Citation

Packed-Bed Torrefaction of Bagasse under Inert and Oxygenated Atmospheres

et al. 2015

View full text Add to dashboard Cite

Biomass torrefaction in gas atmospheres containing oxygen, such as hot flue gases or air, is an interesting concept with potentially positive implications with respect to processing costs and efficiency. This study aims to investigate the effects of varying concentrations of oxygen in the atmosphere on the torrefaction of sugarcane bagasse in a packed bed at different temperatures, under realistic conditions of direct convective heat transfer. In addition to understanding the development of bed temperature profiles, the study includes an analysis of the torrefied solids (HHV determination using bomb calorimetry) and the torrefaction volatiles (permanent gases: Near-infrared spectroscopy, condensates: HPLC with UV-Vis/RI detection). It was observed that for this specific reactor configuration and heat transfer regime, there are temperature specific limits beyond which an increase in oxygen concentration leads to an oxidative thermal runaway in the packed bed. An increase in torrefaction temperatures from to 290°C, for e.g. leads to a reduction in the tolerable limits of oxygen concentration from 5% to 1%. It was further determined that away from the ignition zone, moderate addition of oxygen does not drastically reduce mass and energy yields of the solids, and in some cases may also lead to more uniform heating of the biomass bed. Increase in oxygen concentration also leads to a shift in the partitioning of the volatiles in favour of gaseous products, with specifically an increase in carbon dioxide resulting in reduction of the HHV of the volatiles.

show abstract

“…However, in the present study, in contrast to the results obtained by Saadon et al 16 , the increase in permanent gases (CO and CO 2 )…”

Section: Volatile Products Of Torrefactioncontrasting

confidence: 99%

Section: Volatile Products Of Torrefactionmentioning

confidence: 97%

Packed-Bed Torrefaction of Bagasse under Inert and Oxygenated Atmospheres

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Torrefaction using carbon dioxide showed an increase in the higher heating value (HHV) with increased temperature, and more pores were observed as compared to the torrefaction in the nitrogen medium (Thanapal et al, 2014). When lignocellulose was torrefied using carbon dioxide with concentrations below 15 vol.%, a noticeable amount of gases was produced due to the enhanced thermal degradation (Saadon et al, 2014). The grindablity of biomass torrefied in the carbon dioxide environment was better than that of the sample torrefied in nitrogen atmosphere.…”

Section: Introductionmentioning

confidence: 95%

Influence of temperature on bamboo torrefaction under carbon dioxide atmosphere

Bian

et al. 2015

Industrial Crops and Products

View full text Add to dashboard Cite

“…The torrefaction treatment aims to improve characteristics of lignocellulose biomass by reducing its oxygen content while concurrently maintaining or minimizing the degradation of oxidation-capable or oxidizable elements inside (with energy release, e.g. carbon and hydrogen), thereby producing fuels with better performance for the combustion as well as gasification process (Medic et al, 2012;Saadon et al, 2014). Likewise, it is expected that the torrefaction could improve the characteristics of bio-pellets exerted from various quality parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of Peanut Shell Torrefaction on Qualities of The Produced Bio-pellet

Wibowo¹,

Lestari

2019

Reaktor

View full text Add to dashboard Cite

Peanut shells could be regarded as biomass wastes generated from agricultural products, which are abundantly available. The current handling of those wastes is merely through direct incineration, without a proper and controlled manner. Consequently, it could arouse environmental concerns, such as air pollution and human respiratory diseases. One alternative solution is converting those peanut shells to bio-pellet, expectedly applicable for fuels. Relevantly, research on bio-pellet manufacture from peanut shells, previously treated with the torrefaction, was conducted. It’s aimed mainly to identify the fuel-related characteristics of bio-pellet products. The tested bio-pellet parameters covered, moisture content, ash content, volatile matters, fixed carbon content, calorific values, and density. The results revealed that torrefaction temperature and time at raw materials (peanut shells) could improve their qualities in regard to particular calorific value compared to those before such torrefaction; which referred to Indonesia’s Standard (SNI-8021-2014) for wood bio-pellet. Further, torrefaction could increase bio-pellet quality which satisfied the SNI’s Standard, except for ash content. Optimal torrefaction treatment was obtained at 300oC temperature for 60 minutes, whereby it achieved remarkable bio-pellet characteristics in terms of moisture content (3.092%), ash content (6.116%), volatile matters (38.387%), fixed carbon (55.447%), calorific value (6174 cal/g), and density (0.703 g/cm3). The torrefaction bio-pellets from peanut shells could achieve remarkable performances, with respect to fuel consumption rate (0.68 kg/hr), heating value (6174 kcal/kg), and thermal efficiency (16.67%).

show abstract

Torrefaction in the Presence of Oxygen and Carbon Dioxide: The Effect on Yield of Oil Palm Kernel Shell

Cited by 43 publications

References 12 publications

Packed-Bed Torrefaction of Bagasse under Inert and Oxygenated Atmospheres

Packed-Bed Torrefaction of Bagasse under Inert and Oxygenated Atmospheres

Influence of temperature on bamboo torrefaction under carbon dioxide atmosphere

Effect of Peanut Shell Torrefaction on Qualities of The Produced Bio-pellet

Contact Info

Product

Resources

About