Enhanced Reactive Brilliant Blue Removal Using Chitosan-Biochar Hydrogel Beads.

ABSTRACT: To address the challenges associated with the weak affinity and difficult separation of biochar, we developed chitosan-biochar hydrogel beads (CBHBs) as an efficient solution for removing reactive brilliant blue (RBB KN-R) from wastewater. The adsorption behavior and mechanism of RBB KN-R onto CBHBs were extensively studied. Notably, the adsorption capacity of RBB KN-R showed pH-dependence, and the highest adsorption capacity was observed at pH 2. The adsorption process was well fitted with the pseudo-second-order kinetic model and the intraparticle diffusion model. Film diffusion and intraparticle diffusion were both responsible for the adsorption of RBB KN-R onto CBHBs. At 298.15 K, the maximum adsorption capacity q_m was determined to be 140.74 mg/g, with higher tempera

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC10458918 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature