Influence of one-step and two-step KOH activation on activated carbon characteristics

By O. Oginni, K. Singh, Gloria S Oporto, B. Dawson-Andoh, L. McDonald, E. Sabolsky. Bioresource Technology Reports, 2019

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Abstract This study investigated the influence of one-step and two-step KOH activation on the characteristics of activated carbons. The biomass precursors [Kanlow Switchgrass (KS) and Public Miscanthus (PM)] and their biochars produced at pyrolysis temperature of 500 °C, were impregnated with KOH and activated at a temperature 900 °C for 30 min in an inert condition. BET surface area, pore characteristics, surface functional groups and microstructures of the activated carbons were examined. The biomass-derived activated carbons (KOH-KSBM and KOH-PMBM) had the highest BET surface areas of 1272 and 1597 m2/g respectively. The activated carbons were used in adsorbing acetaminophen and caffeine and the biomass-derived activated carbons presented an overall better adsorption characteristic.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/f79dacabae1c92f75a514293fb1aa1b47eb668f1