Development of Low-Cost Porous Carbons through Alkali Activation of Crop Waste for CO₂ Capture.

ABSTRACT: To achieve the "double carbon" (carbon peak and carbon neutrality) target, low-cost CO₂ capture at large CO₂ emission points is of great importance, during which the development of low-cost CO₂ sorbents will play a key role. Here, we chose peanut shells (P) from crop waste as the raw material and KOH and K₂CO₃ as activators to prepare porous carbons by a simple one-step activation method. Interestingly, the porous carbon showed a good adsorption capacity of 2.41 mmol/g for 15% CO₂ when the mass ratio of K₂CO₃ to P and the activation time were only 0.5 and 0.5 h, respectively, and the adsorption capacity remained at 98.76% after 10 adsorption-desorption cycle regenerations. The characterization results s

SUBMITTER: Wang X 

PROVIDER: S-EPMC9773967 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature