Evaluating BECCS–Biochar systems as hybrid negative emission technologies through life cycle assessment
Energy Conversion and Management, cilt.368, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 368
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.enconman.2026.121992
- Dergi Adı: Energy Conversion and Management
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Compendex, Environment Index, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: BECCS, Biochar, Carbon dioxide removal (CDR), Climate change, Environmental impact assessment (EIA), Life cycle assessment (LCA)
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Integrating biochar production (BC) with carbon capture and storage (CCS) offers a hybrid negative-emission pathway that may improve carbon removal relative to standalone biochar systems while preserving the long-term permanence of geological storage. This study evaluates a BC + CCS configuration that combines a 350 kg/h biochar production unit with a 10 MW biomass-fired power plant equipped with post-combustion monoethanolamine capture and geological storage. The novelty of the system lies in co-locating two carbon removal routes within a single facility, enabling the use of pyrolysis volatiles while capturing the resulting CO2 emissions through CCS. Environmental performance was assessed by life cycle assessment (LCA), while carbon sequestration performance was evaluated using the Climate Effect Value (CEV). Standalone BC, bioenergy with carbon capture and storage (BECCS), and BC + CCS were compared on a consistent biomass-input and carbon-capture basis. Sensitivity analyses examined the effects of biomass allocation to pyrolysis and pyrolysis temperature. BC achieved strong short-term climate performance (CEV = 0.97 at 30 years) but declined over longer horizons (CEV = 0.32 at 1000 years), whereas BECCS maintained high long-term performance (CEV = 0.94 at 1000 years). BC + CCS showed intermediate long-term permanence while preserving strong near-term sequestration. Environmental performance was also sensitive to system design: increasing the pyrolysis share enhanced substitution benefits from biochar but reduced electricity substitution, while heat-output BECCS and BC + CCS lowered non-climate impacts at the expense of lower CO2 mitigation. This study demonstrates that integrating biochar production with CCS can provide a scalable hybrid pathway that balances near-term climate benefits with long-term permanence.