POS9-0149
Amine-Functionalized Nanocellulose Aerogels from Biomass Waste as Adsorbents for CO2 Capture
Topic
S9. Polymer Technology for Sustainability
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Yernazar Kuan (Korea Advanced Institute of Science and Technology)
Co-Author(s)
Abstract
Climate change resulting from excessive greenhouse gas (GHG) emissions is a significant global issue, with carbon dioxide (CO2) being the largest contributor to anthropogenic global warming. Global GHG emissions have continued to increase over the last decade, affecting many climate extremes in every region across the globe. This has resulted in adverse impacts on food and water security, human health, and the global economy. As a solution, CO2 capturing is a new promising method to mitigate GHG emissions. However, the projected deployment of carbon capture, utilization, and storage (CCUS) technologies by 2050 is very limited due to challenges such as high regeneration energy requirements and moisture sensitivity of many existing solid adsorbents. Recently, non-edible lignocellulosic biomass has garnered significant attention in the CCUS sector, particularly nanocellulose due to its high surface area, thermal stability, biocompatibility, renewability, tunable surface chemistry, low cost, and minimal environmental footprint. This research develops amine-functionalized nanocellulose aerogels derived from spent coffee grounds (SCG), a second-generation non-edible biomass waste, for efficient CO2 capture. The addition of amine groups via branched polyethylenimine (PEI) grafting is anticipated to enhance CO2 adsorption through strong chemisorption, while the highly porous aerogel network facilitates fast gas diffusion and improves adsorption capacity. This study aims to valorize low-value biomass waste into reusable high-performance CO2 adsorbent, offering a dual benefit for climate change mitigation and renewable biomass energy transition adhering to the principles of negative carbon solution.
