Preparation of Biochar with Developed Mesoporous Structure from Poplar Leaf Activated by KHCO₃ and Its Efficient Adsorption of Oxytetracycline Hydrochloride.

ABSTRACT: The effective removal of oxytetracycline hydrochloride (OTC) from the water environment is of great importance. Adsorption as a simple, stable, and cost-effective technology is regarded as an important method for removing OTC. Herein, a low-cost biochar with a developed mesoporous structure was synthesized via pyrolysis of poplar leaf with potassium bicarbonate (KHCO₃) as the activator. KHCO₃ can endow biochar with abundant mesopores, but excessive KHCO₃ cannot continuously promote the formation of mesoporous structures. In comparison with all of the prepared biochars, PKC-4 (biochar with a poplar leaf to KHCO₃ mass ratio of 5:4) shows the highest adsorption performance for OTC as it has the largest surface area and richest mesoporous structure.

SUBMITTER: Wei Z 

PROVIDER: S-EPMC10096365 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature