Adsorption of Methylene Blue on PVDF Membrane and PVDF/TiO₂ Hybrid Membrane: Batch and Cross-Flow Filtration Studies.

ABSTRACT: The adsorption of methylene blue (MB) on poly(vinylidene fluoride) (PVDF) and PVDF/titanium dioxide(TiO₂) membranes with 1.5 wt% dosage was examined through batch adsorption and dynamic cross-flow filtration experiments. The effects of pH, temperature, and initial MB concentration on adsorption performance were evaluated via batch experiments. The Thomas model was applied to analyze the membrane filtration process, while kinetic, isothermal, and thermodynamic models were integrated to elucidate the adsorption mechanisms. Results demonstrated that low temperature and high initial MB concentration significantly improved MB adsorption on both membranes. Under neutral pH conditions (pH = 7), the maximum adsorption capacities of PVDF and PVDF/TiO₂ membranes reached 1.518 ±

SUBMITTER: Shi F 

PROVIDER: S-EPMC12846324 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature