A novel zero valent metal bismuth for bromate removal: direct and ultraviolet enhanced reduction.

ABSTRACT: Bromate (BrO₃ ^-) is a carcinogenic and genotoxic by-product of the ozone disinfection process. In this study, a new zero-valent metal, bismuth, was used to reduce bromate. Bismuth samples were prepared by a solvothermal method and characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The morphology of the bismuth powder was microspheres assembled with dense nanosheets. The kinetics of the direct bromate reduction by bismuth accorded with the pseudo-first-order kinetics model. The rate coefficients of the initial bromate concentration of 1.00 mg L^-1, 2.50 mg L^-1, 5.00 mg L^-1 were identically close to 0.08 min^-1. For 0.20 mg L^-1, a reaction

SUBMITTER: Huang H 

PROVIDER: S-EPMC9049030 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature