Development of activated sustainable porous carbon adsorbents from Karanja shell biomass and their CO2 adsorption

Sustainable activated carbon was prepared from Karanja shell biomass, and activation with potassium hydroxide (KOH) activating agent, and evaluation of its CO2 adsorption capacity, and regeneration were investigated. The outcomes demonstrated that the micro-pore structure of the synthesized activated carbon had specific surface areas and micropore volumes of 997 m(2)/g and 0.82 cm(3)/g, respectively. X-ray diffraction, Fourier transform infra-red spectroscopy, laser Raman spectroscopy, field emission scanning electron microscopy, CHNS-elemental analysis, and N-2 adsorption investigations were some of the characterization techniques that were used to determine the parameters of the carbon adsorbents. The synthesized activated carbon displayed a remarkable capacity for CO2 adsorption. At 25 degrees C, the CO2 uptake and selectivity were 3.8 mmol/g, which were similar to activated carbons made chemically with KOH as an activator. Moreover, the produced activated carbon displayed outstanding recycling and mature CO2 adsorption.