Exploration of the Interrelationship within Biomass Pyrolysis Liquid Composition Based on Multivariate Analysis

Area of Science:

• Chemical Engineering
• Biomass Conversion
• Sustainable Chemistry

Background:

• Pyrolysis liquid (PA) utilization depends on its chemical composition.
• Factors influencing PA composition during preparation require detailed assessment.
• Understanding these factors is crucial for optimizing PA applications.

Purpose of the Study:

• To analyze the chemical composition of pyrolysis liquid (PA).
• To investigate the effects of feedstock and pyrolysis temperature on PA composition.
• To provide a theoretical basis for PA application.

Main Methods:

• Multivariate statistical analysis of PA composition data from published and experimental sources.
• Correlation analysis to determine relationships between chemical constituents.
• Linear regression to assess the impact of pyrolysis temperature on specific compounds.

Main Results:

• Feedstock type did not significantly alter chemical constituents.
• Acids and phenolics constituted the major components (58.46%).
• Temperatures above 350°C led to a significant decrease in acids and ketones, and a notable increase in phenolics. Acetic acid was the most abundant.
• Negative correlation between acids and phenolics; positive correlation between ketones and alcohols.
• Pyrolysis temperature showed negative linear relationships with acids and aldehydes, and a positive relationship with phenolics.

Conclusions:

• Pyrolysis temperature is a key factor influencing PA chemical composition.
• Specific compound groups show distinct responses to temperature variations.
• The findings offer valuable insights for the targeted application of pyrolysis liquid.