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Optimization via response surface methodology of palm kernel shell biochar for supplementary cementitious replacement
Aan Mohammad Nusrat Aman1, Anurita Selvarajoo1, Teck Leong Lau1
1Department of Civil Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih, 43500, Selangor, Malaysia.
Chemosphere
|December 12, 2022
Summary
This study optimizes palm kernel shell biochar production for use as a sustainable supplementary cementitious material. Optimized pyrolysis conditions enhance biochar properties, supporting eco-friendly construction materials.
Area of Science:
- Materials Science
- Environmental Science
- Chemical Engineering
Background:
- Conventional concrete production negatively impacts the environment.
- Biochar from biomass is an evolving supplementary cementitious material.
- Pyrolysis parameters significantly influence biochar properties.
Purpose of the Study:
- To identify physiochemical properties of palm kernel shell biochar.
- To optimize biochar production using response surface methodology for cement replacement.
- To investigate the impact of pyrolysis parameters on biochar attributes.
Main Methods:
- Pyrolysis of palm kernel shell in a tubular furnace (200-800°C).
- Optimization using response surface methodology.
- Analysis of biomass and biochar using TGA and FESEM-EDX.
Main Results:
- Optimized pyrolysis parameters: 409°C, 15°C/min heating rate, 120 min residence time.
- Achieved responses: 38.2% yield, 73.37% carbon, 25.48% oxygen, 0.39% potassium, 0.44% silica.
- Discussed thermal properties influenced by pyrolysis factors.
Conclusions:
- Palm kernel shell biochar exhibits beneficial properties for cement replacement.
- Optimized biochar production enhances its potential as a sustainable construction material.
- Supports the use of abundant palm waste in Malaysia for eco-friendly construction.
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