Characteristics of reactivity and structures of palm kernel shell (PKS) biochar during CO<sub>2</sub>/H<sub>2</sub>O mixture gasification

Guozhang Chang; Ximin Yan; Pengyu Qi; Mei An; Xiude Hu; Qingjie Guo

doi:10.1016/j.cjche.2018.03.003

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Characteristics of reactivity and structures of palm kernel shell (PKS) biochar during CO₂/H₂O mixture gasification

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Characteristics of reactivity and structures of palm kernel shell (PKS) biochar during CO₂/H₂O mixture gasification
- Chinese Journal of Chemical Engineering Vol. 26, Issue 10, Pages: 2153-2161(2018)
- Affiliations：
  
  2 Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology,Qingdao,China,266042
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.03.003
  CLC：
- Published：2018
- Accepted：
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DOI：

/H DOI： 10.1016/j.cjche.2018.03.003.

摘要

Abstract

Palm kernel shell (PKS) biochars with different levels of carbon conversion were initially prepared using a tube furnace

after which the reactivity of each sample was assessed with a thermogravimetric analyzer under a CO

atmosphere. The pore structure and carbon ordering of each biochar also examined

employing a surface area analyzer and a Raman spectroscopy. Thermogravimetric results showed that the gasification index R

of the PKS biochar decreased from 0.0305 min

-1

at carbon conversion (x)=20% to 0.0278 min

-1

at x=40%. The expansion of micropores was the dominant process during the pore structure evolution

ad mesopores with sizes ranging from 6 to 20

48 to 50 nm were primarily generated during gasification under a CO

O mixture. The proportion of amorphous carbon in the PKS biochar decreased significantly as x increased

suggesting that the proportion of ordered carbon was increased during the CO

O mixed gasification. A significantly reduced total reaction time was observed when employing a CO

/intermittent H

O process along with an 83.46% reduction in the steam feed

compared with the amount required using a CO

O atmosphere.

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⁰

Characteristics of reactivity and structures of palm kernel shell (PKS) biochar during CO2/H2O mixture gasification

DOI：10.1016/j.cjche.2018.03.003

摘要

Abstract

关键词

Keywords

references

Characteristics of reactivity and structures of palm kernel shell (PKS) biochar during CO₂/H₂O mixture gasification