Synthesis of Hybrid Carbon Aerogels from Sugarcane Bagasse and Coffee Grounds for Oil Adsorption Application

Direct conversion of biomass-derived aerogel to carbon aerogel (CA) via the pyrolysis method provides a promising approach to developing adsorbent materials for oil-spill cleaning. In this work, three-dimensional carbon aerogels (CSCA) were fabricated by pyrolyzing cellulose aerogels (Cell-A) synthesized from sugarcane bagasse (SB) and coffee grounds (CG) with sodium alginate (SA) as a cross-linker. Notably, the influence of CG to SA ratios on the characteristics and oil adsorption performance for used cooking and lubricating oil was investigated. The results showed that CSCA-1.5 with 1.5 wt