[Study on Biochar Properties Analysis with Scanning Electron Microscope-EnergyDispersive X-Ray Spectroscopy...

Area of Science:

• Materials Science
• Analytical Chemistry
• Environmental Science

Background:

• Biochar production involves thermal decomposition of biomass.
• Understanding biochar's chemical and structural properties is crucial for its applications.
• Existing methods for biochar analysis can be time-consuming or limited in scope.

Purpose of the Study:

• To investigate the utility of Scanning Electron Microscope-Energy Dispersive X-ray spectroscopy (SEM-EDX) for analyzing biochar.
• To correlate biochar properties with different production temperatures.
• To assess SEM-EDX as a rapid and simultaneous method for biochar characterization.

Main Methods:

• Miscanthus biochar was produced at various temperatures.
• SEM-EDX was employed to analyze the elemental composition and surface structure.
• Results were compared with dry combustion total carbon content.
• Statistical analysis (correlation) was performed to assess relationships between variables.

Main Results:

• Biochar carbon content (both average and maximum) increased with the highest treatment temperature (HTT).
• Strong positive correlations were observed between SEM-EDX carbon content (SEM C max. and SEM C aver.) and HTT.
• SEM C max. showed a better correlation with dry combustion total carbon content than SEM C aver.
• SEM-EDX effectively analyzed both structural and compositional properties of the biochar.

Conclusions:

• SEM-EDX is a rapid, simple, and stable method for analyzing biochar.
• SEM C max. determined by SEM-EDX can reliably indicate the carbon content of miscanthus biochar.
• SEM-EDX offers simultaneous analysis of biochar structure and composition, making it a promising technique for material characterization.