Electrodeposition of hierarchically amorphous FeOOH nanosheets on carbonized bamboo as an efficient filter membrane for As(III) removal
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Gu, Y
Li, H
Ye, M
Qin, W
Zhang, H
Wang, G
Zhang, Y
Zhao, H
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Abstract
Exploring inexpensive and efficient adsorbents is highly desirable for addressing water contamination issues. To overcome the inherent engineering drawbacks of nanostructured adsorbents, a hierarchical hybrid membrane constructed by amorphous FeOOH nanosheets grown on carbonized bamboo (denoted as FeOOH NSs/CB) has been successfully fabricated within several minutes via a facile electrodeposition process. Thanks to abundant binding sites, amorphous nature of ultrathin FeOOH NSs, and excellent pore accessibility, the optimized FeOOH NSs/CB membrane exhibits superior As(III) sequestration capability in high removal efficiency, fast kinetics, and strong anti-interfering performance. Significantly, the optimized FeOOH NSs/CB hybrid membrane can be directly utilized as an efficient filter unit to continuously treat 1160 mL of As(III)-contaminated water (100 ppb) to below the permitted threshold in drinking water, accompanied by as high as 1528.7 L m−2 h−1 of the permeate flux. Furthermore, the spent FeOOH NSs/CB membrane is capable of being effectively regenerated with NaOH solution with no obvious efficiency decline after cycling tests. This work illustrates huge prospect of the proposed FeOOH NSs/CB hybrid membrane in treating As(III)-contaminated water.
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Chemical Engineering Journal
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Chemical engineering
Civil engineering
Environmental engineering
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Wang, Y; Gu, Y; Li, H; Ye, M; Qin, W; Zhang, H; Wang, G; Zhang, Y; Zhao, H, Electrodeposition of hierarchically amorphous FeOOH nanosheets on carbonized bamboo as an efficient filter membrane for As(III) removal, Chemical Engineering Journal, 2019