Characterization and Reactivity Study of Coal Bottom Ash for Utilization in Biomass Gasification as an Adsorbent/Catalyst for Cleaner Fuel Production

Muhammad Shahbaz, Suzana Yusup, Tareq Al-Ansari, Abrar Inayat, Muddasser Inayat, Hasan Zeb, Mohamad Sahban Alnarabiji

Research output: Contribution to journalArticle

Abstract

The objective of this study is to determine the catalytic potential and adsorption characteristics of coal bottom ash (CBA) for utilization in biomass gasification for cleaner fuel production. The analysis shows the presence of metals such as Fe, Al, Ca, and Mg in CBA that have been used as common elements of catalysts in gasification. The surface of CBA is porous and consists of irregular shape particles and crystalline structure determined using characterization techniques. The surface area (51.02 m2/g), pore volume (0.1 cm3/g), and pore width (3.03 nm) of CBA were determined using Brunauer-Emmett-Teller analysis. The reactivity of CBA in a CO2 environment at 500, 600, 700, and 800 °C is measured through thermogravimetric analysis, and variation in chemical composition of all metal oxides and CaO is measured after CO2 treatment. The CBA adsorbs about 1.15 and 1.51 wt % of CO2 at 25 and 60 °C in high-pressure volume adsorption tests. The highest weight loss of about 14% occurs at a heating rate of 10 °C/min in a N2 atmosphere. Thermal analysis confirms its stability at a high temperature above 600 °C, which is a good sign for its utilization as a catalyst as gasification mostly takes place between 600 and 1100 °C. In biomass steam gasification, the H2 production is increased from 29.29 to 36.24 vol % with the use of CBA at a temperature of 700 °C and steam/biomass ratio of 0.5. It shows the potential of the cleaner and sustainable utilization of CBA.

Original languageEnglish
JournalEnergy and Fuels
DOIs
Publication statusAccepted/In press - 1 Jan 2019

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Coal Ash
Coal
Gasification
Adsorbents
Coal ash
Biomass
Catalysts
Steam
Metals
Adsorption
Heating rate
Chemical elements
Oxides
Thermoanalysis
Thermogravimetric analysis
Crystalline materials
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Characterization and Reactivity Study of Coal Bottom Ash for Utilization in Biomass Gasification as an Adsorbent/Catalyst for Cleaner Fuel Production. / Shahbaz, Muhammad; Yusup, Suzana; Al-Ansari, Tareq; Inayat, Abrar; Inayat, Muddasser; Zeb, Hasan; Alnarabiji, Mohamad Sahban.

In: Energy and Fuels, 01.01.2019.

Research output: Contribution to journalArticle

Shahbaz, Muhammad ; Yusup, Suzana ; Al-Ansari, Tareq ; Inayat, Abrar ; Inayat, Muddasser ; Zeb, Hasan ; Alnarabiji, Mohamad Sahban. / Characterization and Reactivity Study of Coal Bottom Ash for Utilization in Biomass Gasification as an Adsorbent/Catalyst for Cleaner Fuel Production. In: Energy and Fuels. 2019.
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