| 초록 |
Here, the nZVI/Mn oxide core/shell structure, which was simply fabricated by sono-synthesis method, was studied its stability applied for arsenic removal. As the results, the nZVI/Mn oxide exhibited the better stability and adsorption capacity during arsenic adsorption process than nZVI due to the contribution of the manganese oxide layer of the core/shell. Manganese oxide takes an important role to retard the oxidation of nZVI that inhibited the release of iron on nZVI/Mn oxide compared with nZVI during arsenic adsorption process. Moreover, the oxidation reaction of As(III) to As(V) by Mn species was also occurred. Therefore, with the core/shell using manganese oxide, the fabricated material can be promising for arsenic removal as an alternative of nZVI. |
