@article{ART003273838},
author={Kim Seokhwi and Lee Sang-Eun},
title={Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={5},
pages={2147-2156},
doi={10.1007/s42823-025-00911-9}
TY - JOUR
AU - Kim Seokhwi
AU - Lee Sang-Eun
TI - Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production
JO - Carbon Letters
PY - 2025
VL - 35
IS - 5
PB - Korean Carbon Society
SP - 2147
EP - 2156
SN - 1976-4251
AB - Chemical activation consumes copious quantities of chemicals is therefore hampered by its low economic feasibility. However, this issue can be overcome through the recovery and reuse of alkali compounds leached into wastewater. Because the leached potassium compounds exist as the relatively less reactive K2CO3, we explored three different approaches to remove carbonate ions (CO32−) from the wastewater: (i) CO₂ stripping after acidification, (ii) exchanging CO₃2⁻ for OH⁻ using strong basic anion exchange resins, and (iii) inducing a phase transition via a reaction with Ca(OH)2 to precipitate CaCO3. Both ion exchange and phase transition convert K2CO3 into highly reactive potassium compounds such as KOH. The phase transition effectively enhanced the specific surface area of the activated carbon and thus had implications for pore development in carbon precursors, while offering a viable recovery strategy for alkali compounds that reduces costs by approximately 20% compared to traditional methods. These findings suggest that the in-situ recycling of wastewater for the production of activated carbon can improve the economic viability of manufacturing processes.
KW - Chemical activation;Alkali compound;KOH;K2CO3;Recovery;Reactivity
DO - 10.1007/s42823-025-00911-9
ER -
Kim Seokhwi and Lee Sang-Eun. (2025). Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production. Carbon Letters, 35(5), 2147-2156.
Kim Seokhwi and Lee Sang-Eun. 2025, "Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production", Carbon Letters, vol.35, no.5 pp.2147-2156. Available from: doi:10.1007/s42823-025-00911-9
Kim Seokhwi, Lee Sang-Eun "Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production" Carbon Letters 35.5 pp.2147-2156 (2025) : 2147.
Kim Seokhwi, Lee Sang-Eun. Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production. 2025; 35(5), 2147-2156. Available from: doi:10.1007/s42823-025-00911-9
Kim Seokhwi and Lee Sang-Eun. "Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production" Carbon Letters 35, no.5 (2025) : 2147-2156.doi: 10.1007/s42823-025-00911-9
Kim Seokhwi; Lee Sang-Eun. Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production. Carbon Letters, 35(5), 2147-2156. doi: 10.1007/s42823-025-00911-9
Kim Seokhwi; Lee Sang-Eun. Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production. Carbon Letters. 2025; 35(5) 2147-2156. doi: 10.1007/s42823-025-00911-9
Kim Seokhwi, Lee Sang-Eun. Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production. 2025; 35(5), 2147-2156. Available from: doi:10.1007/s42823-025-00911-9
Kim Seokhwi and Lee Sang-Eun. "Recovery of reactive potassium compounds as chemical agents in wastewaters from KOH-activated carbon production" Carbon Letters 35, no.5 (2025) : 2147-2156.doi: 10.1007/s42823-025-00911-9
