Biomass Utilization in Renewable Energy Systems

Biomass utilisation in renewable energy systems encompasses the conversion of organic residues—from agricultural and forestry by-products to dedicated energy crops and select waste streams—into valuable energy carriers, fuels and materials. Core conversion pathways include thermochemical processes such as combustion for heat and power, gasification to yield synthesis gas for combined heat and power or chemical feedstocks, pyrolysis to produce bio-oil and biochar, torrefaction for densified solid fuels and hydrothermal liquefaction for biomass-derived liquids. Biochemical routes employ anaerobic digestion to generate biogas, fermentation to produce bioethanol or other chemicals, and integrated biorefineries that combine multiple processes. These approaches advance energy security by reducing reliance on fossil fuels, mitigate greenhouse gas emissions through carbon capture in soils (via biochar) or upstream offsets, and foster circular economy models through co-product valorisation (e.g. bio-based chemicals, fertilisers). Practical deployment spans distributed rural systems supplying heat or power, large-scale co-firing with coal in utility plants, and emerging industrial biorefineries. Sustainability considerations—from life-cycle assessment and supply-chain resilience to land-use impacts—underpin policy and investment choices. Recent developments focus on optimising reactor designs, improving yield and quality of bio-oil and syngas, enhancing carbon sequestration potential, and integrating digital monitoring for process control and traceability.

Research from Nature Portfolio

Recent studies have demonstrated engineered biochar with tailored pore structures and surface chemistries to enhance long-term soil carbon storage while improving nutrient retention, thereby delivering negative emission potentials alongside agronomic benefits. Another line of work has advanced hybrid biochemical-thermochemical biorefineries that couple enzyme-mediated saccharification of lignocellulose with downstream catalytic upgrading of bio-oils, achieving significant gains in overall energy efficiency and product flexibility. A further study has applied dynamic life-cycle modelling to assess regional deployment scenarios of biomass co-firing in existing power stations, showing that optimised feedstock blends and retrofitted burners can reduce carbon intensity by up to 40% without major infrastructure overhaul.

Biomass Utilization in Renewable Energy Systems publication trend

The graph below shows the total number of articles in biomass utilization in renewable energy systems across all publications each year (not limited to Nature Index journals).

Technical terms

Pyrolysis: Thermochemical decomposition of biomass at elevated temperatures in the absence of oxygen to yield bio-oil, syngas and biochar.

Gasification: Partial oxidation of biomass to produce a combustible synthesis gas rich in CO and H₂ for energy or chemical synthesis.

Hydrothermal Liquefaction: Conversion of wet biomass into energy-dense bio-crude under high pressure and moderate temperature in aqueous phase.

Torrefaction: Mild thermal treatment of biomass (200–300 °C) to improve grindability, energy density and hydrophobicity of solid fuel.

Anaerobic Digestion: Microbial breakdown of organic matter in oxygen-free conditions to produce biogas (mainly CH₄ and CO₂) and digestate.

Life-Cycle Assessment (LCA): Systematic analysis of environmental impacts across all stages of a product’s life, from feedstock cultivation to end-use emissions.

References

1. Oil palm biomass in Indonesia: Thermochemical upgrading and its utilization. Renewable and Sustainable Energy Reviews (2023).
2. Availability of Biomass Residues for Co-Firing in Peninsular Malaysia: Implications for Cost and GHG Emissions in the Electricity Sector. Energies (2014).
3. Fueling the future: biomass applications for green and sustainable energy. Discover Sustainability (2024).