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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.2
- 수록면
- 179 - 190 (12page)
이용수
초록· 키워드
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HNO₃-modified activated carbon was used to make electrodes for single-pass capacitive deionization for removing F<SUP>-</SUP> from drinking water. The optimal operating conditions for F¯ removal were studied, and the F¯ removal performance, cycle stability, and charge efficiency of the electrode were investigated. Based on these results, an optimization scheme was proposed for practical applications. After HNO₃ modification, the proportion of micropores, specific surface area, and number of oxygen-containing functional groups on the activated-carbon surface increased, resulting in a significant increase in the specific capacitance of the electrode. Under optimal operating conditions, the adsorption capacity of the modified electrode was 13% higher than that of the unmodified electrode, while the charge efficiency increased by 25% and reached a peak value after about 1,100 s. The HNO₃-modified electrode had good cycle stability, and maintained 83% of the original adsorption capacity after 5 cycles. Optimizing the adsorption time (1,500 s) and desorption time (900 s), 80% of the specific adsorption capacity was maintained after 5 cycles. In addition, the cycle time was reduced by 32%, and the utilization rate of electric-double-layer adsorption sites was optimized, resulting in a reduction in the energy consumption per unit F¯ removal.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
참고문헌 (36)
참고문헌 신청
Mohapatra M, Anand S, Mishra BK, Giles DE, Singh P. Review of fluoride removal from drinking water. J. Environ. Manage. 2009;91:67-77. https://doi.org/10.1016/j.jenvman.2009.08.015.
Liu H, Gao Y, Sun L, Li M, Li B, Sun D. Assessment of relationship on excess fluoride intake from drinking water and carotid atherosclerosis development in adults in fluoride endemic areas, China. Int. J. Hyg. Environ. Heal. 2014;217:413-420. https://doi.
Ghorai S, Pant KK. Investigations on the column performance of fluoride adsorption by activated alumina in a fixed-bed. Chem. Eng. J. 2004;9:165-173. https://doi.org/10.1016/j.cej.2003.07.003.
Li Y, Jiang Y, Wang TJ, Zhang C, Wang H. Performance of fluoride electrosorption using micropore-dominant activated carbon as an electrode. Sep. Purif. Technol. 2017;172:415-421. https://doi.org/10.1016/J.SEPPUR.2016.08.043.
Maliyekkal SM, Sharma AK, Philip L. Manganese-oxide-coated alumina: a promising sorbent for defluoridation of water. Water Res. 2006;40:3497-3506. https://doi.org/10.1016/j.watres.2006.08.007
Liu H, Gao Y, Sun L, Li M, Li B, Sun D. Assessment of relationship on excess fluoride intake from drinking water and carotid atherosclerosis development in adults in fluoride endemic areas, China. Int. J. Hyg. Environ. Heal. 2014;217:413-420. https://doi.
Ghorai S, Pant KK. Investigations on the column performance of fluoride adsorption by activated alumina in a fixed-bed. Chem. Eng. J. 2004;9:165-173. https://doi.org/10.1016/j.cej.2003.07.003.
Li Y, Jiang Y, Wang TJ, Zhang C, Wang H. Performance of fluoride electrosorption using micropore-dominant activated carbon as an electrode. Sep. Purif. Technol. 2017;172:415-421. https://doi.org/10.1016/J.SEPPUR.2016.08.043.
Maliyekkal SM, Sharma AK, Philip L. Manganese-oxide-coated alumina: a promising sorbent for defluoridation of water. Water Res. 2006;40:3497-3506. https://doi.org/10.1016/j.watres.2006.08.007
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UCI(KEPA) : I410-ECN-0101-2022-539-001345200