Year: 2025
Type: conference-paper
Abstract: Selenium oxyanions (Se(IV) and Se(VI)) in wastewater are of concern as serious pollutants due to their easy bioaccumulation and toxicity to living organisms.In this study, mixed oxides with various Y/Fe molar composition ratios (x=0.5, 1, 2) were investigated in the adsorption properties of selenium oxyanions, and were studied their adsorption mechanism.The experimental data best fits the Langmuir adsorption model, which is characteristic of monolayer adsorption (r 2 >0.991).The maximum adsorption capacity (qmax) of Se(IV) and Se(VI) increased in the order of FeY2 > FeY1 > FeY0.5 and of Fe2 > FeY1, respectively.It was suggested that FeY2 adsorbed Se(IV) by formation of inner-sphere complexes and outer-sphere complexes, and adsorbed Se(VI) by outer-sphere complexes.
Authors: Kaoru Ohe, Amu Wakamatsu, Tatsuya Oshima
Institution: University of Miyazaki
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409913894