Enhancing Biomass Utilization with Microwave-Assisted Pyrolysis of Choerospondias Axillaris Seeds

This study demonstrates using Choerospondias axillaris seed biochar as a microwave absorber and catalyst for pyrolysis, enhancing bio-oil yield and quality. With rapid heating, high aromatic content, and reusability, the method offers a sustainable pathway for biomass utilization and clean energy production.

November 27, 2024

1–2 minutes

Zhou, et al (2024)
Microwave pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More of *Choerospondias axillaris*seeds with their derived biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More for comprehensive utilization of the biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More. *Chemical Engineering Journal*. https://doi.org/10.1016/j.cej.2024.157727

A recent study in the Chemical Engineering Journal explores the potential of microwave pyrolysis for converting Choerospondias axillaris seeds into bio-oil, with biochar derived from the seeds acting as both a microwave absorber and an in-situ catalyst. This innovative approach aims to optimize biomass utilization while producing cleaner, high-value energy products.

Microwave-assisted pyrolysis offers several advantages, including rapid and uniform heating, higher energy efficiency, and reduced heat loss compared to conventional methods. In this study, the biochar exhibited excellent microwave absorption properties due to its high surface area, rich porous structure, and catalytic functionality. It outperformed traditional materials like silicon carbide (SiC) in heating efficiency and catalysis, achieving a heating rate of 77.7°C/min and producing bio-oil with a 61% aromatic hydrocarbon content.

Optimal pyrolysis conditionsThe conditions under which pyrolysis takes place, such as temperature, heating rate, and residence time, can significantly affect the properties of the biochar produced. More (700 W and 500°C) yielded 34.5% bio-oil by weight. Remarkably, the biochar retained its effectiveness as a catalyst over five reuse cycles. This underscores its potential for sustainable and cost-effective bio-oil production.

By leveraging the dual functionality of biochar, this method not only improves the energy efficiency of pyrolysis but also aligns with global sustainability goals, including the United Nations’ Goal 7 (Affordable and Clean Energy). The study highlights the potential of biochar-based approaches for scalable, eco-friendly bioenergy solutions.

This research sets the stage for further advancements in renewable energy technologies, paving the way for the comprehensive and sustainable utilization of biomass resources.