| 초록 |
Arsenic (As) contamination in groundwater has become a serious environmental and public health concern worldwide. Although conventional physicochemical techniques have been developed, there are still some disadvantages in the practical application of these methods due to high costs and additional risks including secondary contamination. To remove As efficiently, heterogeneous magnetic iron nanoparticles (FeNPs) were biologically synthesized and immobilized onto an extremophilic microorganism Deinococcus radiodurans R1 (DR-FeNPs) in the present study. The characterization of biogenic FeNPs was performed using FE-SEM, EDX, DLS, XRD and XPS analysis. The as-prepared DR-FeNPs were employed as biosorbents for efficient As(V) removal from aqueous solution. Over 98% of As(V) could be removed by DR-FeNPs under optimized condition. Furthermore, the adsorption experiments were conducted with different coexisting anions to simulate practical application. |
