| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Energy Technologies and CO2 Management
|
| Presentation Title |
Pore Engineering and Surface Functionalization of Biochars From Sugar Beet Pulp for CO2 Capture |
| Author(s) |
Süleyman Sener Akın, Ali Bertan Kir, Zöhre Kurt, Pınar Derin Güre, Feyza Kazanc Ozerinc |
| On-Site Speaker (Planned) |
Feyza Kazanc Ozerinc |
| Abstract Scope |
Biochar provides an effective route for capturing CO2. This study explores ultra-high specific surface area biochar production through thermochemical and wet chemistry processes. While previous studies focused on inert pyrolysis atmospheres, this work investigates the role of oxidative pyrolysis atmospheres, specifically CO2, for nitrogen functionalization and the formation of hierarchical porosity. Sugar beet pulp is used as the representative agricultural carbon source. The biomass samples are treated with nitrogen and alkali agents and undergo slow pyrolysis, hydrothermal carbonization, physical/chemical activation, wet impregnation, and acid leaching, which are then analyzed using BET measurements. The presence of KOH and CO2 atmosphere contributes to higher specific surface areas and uniform microporosity, while NaOH aids in the formation of mesopores. Co-doping of melamine and NaOH enlarges the pores and creates a mesopore dominant structure. The results show that the one-pot pyrolysis approach using active atmospheres and alkali agents enables effective tuning of biochar porosity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Environmental Effects, Sustainability |