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Effect of Maximum Final Temperature on Properties of Wood Based Biocarbon of Tamarix Aphylla

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2012

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
Wood samples of tamarisk (Tamarix aphylla (L.) Karst.) were thermally degraded in a flowing nitrogen atmosphere at different maximum final temperatures (MFT) of 400°, 450°, 500°, 550°, 600° and 650°C with a heating rate of 15°C/minute for a holding time of 120 minutes using a bench scale reactor. Yield, apparent density (AD), void volume (VV), volumetric shrinkage (VS), gross heat of combustion (GHC), ash content (AC), volatile matter content (VMC) and fixed carbon content (FCC) of the biocarbon were evaluated at the different MFT's All the properties studied were found to be affected significantly by the MFT. Increasing the MFT from 400° to 650°C decreased yield from 37.2% to 30.5% and VMC from 30.8% to 16.1% significantly. On the other hand, VV increased from 0.754 m3/g to 0.8 m3/g as well as VS from 29.7% to 43.7%, GHC from 5355 cal/g to 6099 cal/g, AC from 11.31% to 15.47% and FCC from 51.3% to 61.5% with increasing of MFT within this range. Tamarisk biocarbon, irrespective of the yield, was generally lower in its quality than normal one due to its higher contents of ash and volatile matter as well as its lower gross heat of combustion, and fixed carbon contents comparing to other hardwoods at a certain MFT. Accordingly, its suitability as a fuel is confined to the rural and domestic uses.
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REFERENCES

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Figure 3. Apparent density (AD) and void volume (VV) of tamarisk biocarbon made under different maximum final temperatures (MFT).
Figure 2. Yield, volumetric shrinkage (VS), ash content (AC), volatile matter content (VMC) and fixed carbon content (FCC) of tamarisk biocarbon made under different maximum final temperatures (MFT).
Figure 4. Gross heat of combustion (GHC) of tamarisk biocarbon made under different maximum final temperatures (MFT).
International Journal of Science and Engineering Investigations, Volume 1, Issue 8, September 2012 4
www.IJSEI.com Paper ID: 10812-01
ISSN: 2251-8843
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