Beschreibung:
The efficient utilization of biomass in energy conversion processes offers a promising approach for sustainable resource management and the production of valuable products. The research proposed an novel method of obtaining sorption material from readily available Acorus calamus biomass through a combination of physical and chemical activation processes. The results demonstrate a synergistic effect when physical activation with CO2 is followed by chemical activation with KOH. The resulting activated biochar exhibits a specific surface area of 1,652 m2 g-1. It was observed that physical activation with CO2 generates a diverse range of pores, including meso- and macropores, while chemical activation induces the formation of micropores. In contrast, reversing the order of these processes leads to the degradation of the porous structure. The application of physical-chemical activation with synergistic effects represents a significant advancement in producing high-quality activated biocarbon for various applications, such as wastewater treatment and energy storage. The synergistic effect of both activation methods obtained allows prepared highly porous carbon material. In addition, the diversified pore size will allow the sorption of various pollutants in the aquatic environment, and also air pollutants, where gas particles are much smaller