On the adsorption characteristics and mechanism of methylene blue by ball mill modified biochar.

ABSTRACT: In this study, modified biochar (BRB) was prepared from rice straw by ball milling technique and used for the adsorption of methylene blue (MB) in wastewater. The BRB was characterized by SEM, FTIR and XPS, and the adsorption model and Box-Behnken design were used to optimize the five influencing factors. The results showed that the ball milling technique could increase the content of functional groups (-OH, C=C and C-O, etc.) and aromatic structures on the surface of biochar, thus facilitating the removal of MB. The isotherm model was consistent with the Langmuir adsorption model (R² = 0.947) and the maximum adsorption capacity was 50.27 mg/g. The adsorption kinetics was consistent with the pseudo-second-order kinetic model (R² = 1) and the adsorption rate was mainly

SUBMITTER: Wang J 

PROVIDER: S-EPMC10692330 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature