Effect of tire-char ash on the extent of synergy during CO2 co-gasification with hydrochar from potassium-rich coconut fiber
Hungwe, D., Khoshbouy, R., Ullah, S., Ding, L., Yoshikawa, K., & Takahashi, F. (2020). Effect of tire-char ash on the extent of synergy during CO2 co-gasification with hydrochar from potassium-rich coconut fiber. Energy and Fuels, 34(7), 8110-8119. https://doi.org/10.1021/acs.energyfuels.0c00895
Published inEnergy and Fuels
Ding, Lu |
© 2020 American Chemical Society
The influence of inherent tire char ash during co-gasification with coconut hydrochar prepared at different intensities was investigated by thermogravimetric analysis to ascertain the extent to which synergistic interaction, reactivity, and activation energy reduction were altered. High-ash tire tread (TT) and low-ash sidewall (SW) both exhibited enhanced synergy, reactivity, and activation reduction upon co-gasification with hydrochars; however, the extent of promotion was more pronounced in SW-hydrochar blends. This difference was caused by the inhibiting nature of TT inherent ash, particularly the role of Si-containing compounds. Inhibition in TT-hydrochar blends was mainly due to the promotion of alkaline and alkaline earth metal transformation into inactive silicates, and to a lesser extent, the mass transfer effect caused by accumulated ash, especially at conversions higher than 70\%. The extent of enhancement correlated well with the concentration of available alkaline and alkaline earth metals. The findings may be useful in justifying the exclusion of high ash tire char as gasification feedstock to mitigate ash-related problems. ...
PublisherAmerican Chemical Society
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Additional information about fundingThis study was supported financially by JSPS KAKENHI Grant Number 18H01567. The authors appreciate Suzukakedai & Ookayama Materials Analysis Division, Technical Department, Tokyo Institute of Technology, for SEM, XRF and Raman Spectroscopy analysis. Contribution from Lonah J. Mikonga is deeply appreciated.
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