ABSTRACT:In this study, through the leaching of iron oxidizing bacteria with natural manganese ore, by the using of X-ray fluorescence, the X-ray diffraction analysis, and scanning electron microscopy testing technology to characterize the prepared eroded manganese ore, which also gives a further research on the removal performance and mechanism of the eroded manganese ore on the arsenic. The results of the experiment showed that the saturated adsorption capacity of eroded manganese ore on the As(III) and As(V) were 18.52 mg/g and 19.23 mg/g respectively. The Langmuir adsorption model adsorption gives a good description on the removal of arsenic by the eroded manganese ore. The removal rate of arsenic is positively correlated with temperature, when the pH value is near neutral, the best removal performance of eroded manganese ore on the arsenic can be achieved, and the coexisting cation (Ca 2+ , Mg 2+ ) can promote the removal rate of arsenic. With the characterization experiment, it shows that the main components (Mn, Si, Fe, Al) of manganese ore did not change before and after immersion, but the content of MnO decreased by 11.62%, Fe 2 O 3 increased by 13.38%, the content of hydroxyl increase, porosity increased by 31.81%, porosity ratio increased 0.472.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.