Synergetic adsorption-photocatalysis process for water treatment using TiO₂ supported on waste stainless steel slag.

ABSTRACT: This study presents an economical and efficient method to decolourise dye wastewater using industrial waste stainless steel slag (SSS). Titanium dioxide was immobilised on SSS by a precipitation-calcination method. Samples with different TiO₂ loadings (prepared using either titanium isopropoxide precursor or commercial TiO₂ nanoparticles) were used to decolourise an organic contaminant (methylene blue) under dark and UV conditions in aqueous solution, and their adsorption and photocatalytic performances were compared. Samples with 15 and 25 TiO₂ wt% prepared by the precursor method had normalised photocatalytic efficiencies per gram close to that of bare TiO₂; using an adsorption-photocatalysis process led to efficiencies 4.4 and 1.6 times higher

SUBMITTER: Jimenez-Relinque E 

PROVIDER: S-EPMC9120099 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature