Lingamdinne, Angaru, et al (2024) Insights into kinetics, thermodynamics, and mechanisms of chemically activated sunflower stem biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More for removal of phenol and bisphenol-A from wastewater. Scientific Reports. https://doi.org/10.1038/s41598-024-54907-y

In a recent study, researchers delved into the synthesis of a highly efficient KOH-treated sunflower stem activated carbonActivated carbon is a form of carbon that has been processed to create a vast network of tiny pores, increasing its surface area significantly. This extensive surface area makes activated carbon exceptionally effective at trapping and holding impurities, like a molecular sponge. It is commonly More (KOH-SSAC). Employing a meticulous two-step pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More process and chemical activation with KOH, they successfully crafted a material boasting exceptional characteristics. This included a notably high specific surface area of 452 m2/g, coupled with outstanding adsorption capacities for phenol (333.03 mg/g) and bisphenol A (BPA) (365.81 mg/g). The adsorption mechanism revealed spontaneity and exothermic traits, harnessed through synergistic effects involving hydrogen bonding, electrostatic attraction, and stacking interactions.

In a comparative analysis, KOH-SSAC outperformed sunflower stem biochar (SSB) by nearly double, emphasizing its potential for applications in water treatment and pollutant removal. The study advocates for further exploration of optimization strategies to elevate KOH-SSAC’s efficiency in large-scale scenarios. These findings mark a significant stride in the development of advanced materials dedicated to enhancing water treatment processes and bolstering pollution control measures. As society grapples with environmental challenges, the study lays the groundwork for continued research, paving the way for more effective solutions to address water-related concerns on a broader scale.