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Technical Topics for Essay Writing and Debate on CCUS 

The following topics are designed to encourage critical thinking, technical reasoning, and an understanding of emerging trends in carbon capture, utilization, and storage (CCUS). These can be used for essay writing competitions or structured debates at undergraduate, postgraduate, or early career researcher levels.  

1. Technology  

  • CO₂ Capture vs CO₂ Conversion -Capturing CO₂ from emissions vs chemically transforming CO₂ into value-added products. 

  • Solid Sorbents vs Liquid Absorbents for CO₂ Capture- Comparison of material types used for capturing CO₂ — from amine-based liquids to solid functional materials like MOFs and zeolites. 

  • Direct Air Capture (DAC) vs Point-Source Capture- Extracting CO₂ from ambient air vs capturing it directly from concentrated industrial sources like power plants. 

  • Photocatalysis vs Thermocatalysis vs Electrocatalysis for CO₂ Conversion- Utilizing sunlight, heat, or electricity to drive catalytic transformation of CO₂ into fuels and chemicals. 

  • CO₂ Storage vs CO₂ Conversion- Permanently storing CO₂ in geological formations vs utilizing it as a feedstock to create useful products. 

  • Carbon Mineralization vs Catalytic CO₂ Conversion - Converting CO₂ into stable carbonates through mineralization vs transforming it into fuels and chemicals using catalysts. 

2. Policy, Regulation, and MRV 

  • Carbon Tax vs Carbon Trading in CCUS Deployment: Which incentivizes faster technology adoption?  

  • Voluntary Carbon Markets vs Compliance-Based Markets for CCUS: Trustworthiness and climate impact. 

  • Challenges in Measurement, Reporting, and Verification (MRV) of CCUS: Can current tools keep up with innovation? 

3. Cross-sectoral Integration 

  • Role of CCUS in the Future Hydrogen Economy: Blue vs Green hydrogen – transitional solution or dead end? 

  • Integrating CCUS with Bioenergy (BECCS) vs Industrial Emissions: Where is the bigger climate win? 

  • CO₂ Utilization for Building Materials vs Fuels: Best pathway for long-term carbon lock-in? 

4. Environmental and Social Dimensions 

  • Public Acceptance vs Technological Viability of Geologic Storage: What really drives deployment? 

  • Environmental Risks of Subsurface CO₂ Storage vs Climate Risks of Inaction: Risk communication strategies. 

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