Tianxia Guo¹ , Kaiwen Liang²

1 Cuixi Academy of Biotechnology, Zhuji, 311800, Zhejiang, China
2 Agri-Products Application Center, Hainan Institute of Tropical Agricultural Resouces, Sanya, 572025, Hainan, China
Author    Correspondence author
Journal of Energy Bioscience, 2025, Vol. 16, No. 4   
Received: 15 May, 2025    Accepted: 22 Jun., 2025    Published: 03 Jul., 2025

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Rapeseed straw is a common type of agricultural waste. We want to see if it can be used for bioenergy, such as ethanol, biogas and protein, etc. In the experiment, we pre-treated the straw with water heat, dilute acid and mechanical methods. This way, its structure would become easier to decompose and the subsequent conversion efficiency would also be higher. Under the best conditions, the ethanol output can reach 12.2 g/L, and the methane output can reach up to 365 N mL/g of volatile solids. The remaining by-products can also be used to produce proteins or some valuable chemicals. We also attempted mechanical crushing and anaerobic digestion of straw and livestock manure together, which can increase gas production and energy recovery. However, the high ash content, high chlorine content and high sulfur content of straw still pose challenges. By improving pretreatment and process combinations, there is an opportunity to increase energy output and reduce greenhouse gas emissions. The aim of this study is to provide data and scheme references for the utilization of rapeseed straw in the field of sustainable energy.

Rapeseed straw; Bioenergy; Biological refining; Pre-treatment; Sustainability