[Research progress on biomass ash carbon capture and storage]

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Context:

• Rising atmospheric CO2 concentrations necessitate innovative carbon capture and storage (CCS) solutions.
• Biomass ash presents a sustainable and environmentally friendly alternative for CO2 sequestration.
• Understanding biomass ash's CCS potential is crucial for achieving dual carbon targets.

Purpose:

• To review and synthesize current knowledge on biomass ash-based carbon capture and storage (CCS).
• To elucidate the mechanisms, influencing factors, and applications of biomass ash in carbon sequestration.
• To identify research gaps and future directions for optimizing biomass ash CCS technologies.

Summary:

• Biomass ash captures carbon dioxide (CO2) through alkaline earth metal oxides (CaO, MgO).
• Sequestration efficiency is influenced by biomass source, composition, and environmental conditions (temperature, humidity, pressure, CO2 concentration).
• The precise mechanism of carbon sequestration by biomass ash requires further investigation.

Impact:

• Biomass ash's CCS capacity has significant implications for reuse in building materials and soil improvement.
• It can be utilized in preparing adsorbents for carbon capture and storage.
• Developing robust biomass ash CCS technologies is vital for climate change mitigation and sustainable resource management.