氧化铝改性活性炭纤维电吸附除氟效能及机理

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Abstract The modified electrode (ACF-Al) was prepared by coating alumina (Al₂O₃) gel on the surface of activated carbon fiber (ACF) with sol-gel method and heating treatment, and the obtained electrode was characterized with the SEM, XRD and pore size analysis. Subsquently, The artificial wastewater was tested in the lab to evaluate the electroadsorption performance of fluoride removal. Results showed that the modified ACF-Al electrode inhabited twice the capacity than the original ACF electrode on sodium fluoride adsorption. The operating parameters were optimized by response surface test with a result of voltage 2.5V, concentration 15mg/L, and pH 5.72 separately. Moreover, the treatment performance can be further improved by application of two pairs of electrodes, so that the effluent water quality could meet the sanitary standard of drinking water. This novel electrode showed good stability that the adsorption capacity was little reduced after several cycles of regeneration. Finally, the adsorption mechanism was investigated with the simulation of the Langmuir isotherm model, as well as the analysis of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Results showed that the adsorption kinetics followed the pseudo-first-order kinetics model, and this process was accomplished by physical electroadsorption, and ion replaces of -OH group on ACF-Al surface through ion exchange and chemisorption.

Key words： alumina modification activated carbon fiber electroadsorption defluorination chemisorption

Received: 30 December 2022

PACS:

X522

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	Articles by authors
	WEI Yong
	LI Xian-jian
	LUO Zheng-bo
	LI Ke-ying
	GUO Zi-yin
	SHI Rong-kai

Cite this article:

WEI Yong,LI Xian-jian,LUO Zheng-bo等. Efficiency and mechanism of fluoride removal by electroadsorption of alumina modified activated carbon fiber[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 3974-3982.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/3974

[1]	Ayoob S, Gupta A K. Fluoride in drinking water:A review on the status and stress effects[J]. Critical Reviews in Environmental Science and Technology, 2006,36(6):433-487.
[2]	Chen Z, Zhang H, Wu C, et al. A study of electrosorption selectivity of anions by activated carbon electrodes in capacitive deionization[J]. Desalination, 2015,369:46-50.
[3]	Song Y, Qiu X, Li C, et al. Binder-free La (OH)3 supported activated carbon fiber electrode with N-doped C layer for efficient phosphate electrosorption[J]. Applied Surface Science, 2023,612:155430.
[4]	Liang M, Liu H, Yang C, et al. Enhanced Cl- electrosorptive performance of activated carbon fibre via modification by TiO2 and polyaniline[J]. Journal of Environmental Chemical Engineering, 2022,10(6):108741.
[5]	Rasines G, Lavela P, Macías C, et al. On the use of carbon black loaded nitrogen-doped carbon aerogel for the electrosorption of sodium chloride from saline water[J]. Electrochimica Acta, 2015, 170:154-163.
[6]	Feng J, Xiong S, Ren L, et al. Atomic layer deposition of TiO2 on carbon-nanotubes membrane for capacitive deionization removal of chromium from water[J]. Chinese Journal of Chemical Engineering, 2022,45:15-21.
[7]	Zhang H, Li X, Xiao C, et al. Enhanced selective electrosorption of Pb2+ from complex water on covalent organic framework-reduced graphene oxide nanocomposite[J]. Separation and Purification Technology, 2022,302:122147.
[8]	Huang C C, Siao S F. Removal of copper ions from an aqueous solution containing a chelating agent by electrosorption on mesoporous carbon electrodes[J]. Journal of the Taiwan Institute of Chemical Engineers, 2018,85:29-39.
[9]	Zhang D, Wen X, Shi L, et al. Enhanced capacitive deionization of graphene/mesoporous carbon composites[J]. Nanoscale, 2012,4(17):5440-5446.
[10]	Porada S, Borchardt L, Oschatz M, et al. Direct prediction of the desalination performance of porous carbon electrodes for capacitive deionization[J]. Energy & Environmental Science, 2013,6(12):3700-3712.
[11]	Choi J H. Fabrication of a carbon electrode using activated carbon powder and application to the capacitive deionization process[J]. Separation and Purification Technology, 2010,70(3):362-366.
[12]	孙奇娜,盛义平.载钛活性炭对Cr (Ⅵ)的电吸附行为[J].中国环境科学, 2006,26(4):441-444. Sun Q, Sheng Y. Electroadsorption behavior of Cr (Ⅵ) on titanium-loaded activated carbon[J]. China Environmental Science, 2006,26(4):441-444.
[13]	施周,靳兆祺,邓林,等.CNT/PANI电极吸附去除水中Cu2+的研究[J].中国环境科学, 2016,36(12):3650-3656. Shi Z, Jin Z, Deng L, et al. Study on removal of Cu2+ from water by adsorption of CNT/PANI electrode[J]. China Environmental Science, 2016,36(12):3650-3656.
[14]	Perveen S, Nadeem R, Iqbal M, et al. Graphene oxide and Fe3O4 composite synthesis, characterization and adsorption efficiency evaluation for NO3- and PO43- ions in aqueous medium[J]. Journal of Molecular Liquids, 2021,339:116746.
[15]	金肇岩,胡筱敏,孙通,等.脉冲电吸附技术深度脱氮及分子动力学模拟[J].中国环境科学, 2019,39(7):2871-2879. Jin Z, Hu X, Sun T, et al. Capacitive deionization using a pulsed power supply for depth denitrogenation and molecular dynamics simulation[J]. China Environmental Science, 2019,39(7):2871-2879.
[16]	Wang G, Dong Q, Ling Z, et al. Hierarchical activated carbon nanofiber webs with tuned structure fabricated by electrospinning for capacitive deionization[J]. Journal of Materials Chemistry, 2012, 22(41):21819-21823.
[17]	张伟.活性氧化铝改性碳纤维电极电吸附除磷研究[D].重庆:重庆大学, 2017. Zhang W. Study on phosphorus removal by electro-adsorption of activated alumina modified carbon fiber electrode[D]. Chongqing:Chongqing University, 2017.
[18]	李波,邵玲玲.氧化铝、氢氧化铝的XRD鉴定[J].无机盐工业, 2008,40(2):54-57. Li B, Shao L. XRD identification of alumina and aluminum hydroxide[J]. Inorganic Salt Industry, 2008,40(2):54-57.
[19]	Li Y, Jiang Y, Wang T J, et al. Performance of fluoride electrosorption using micropore-dominant activated carbon as an electrode[J]. Separation and Purification Technology, 2017,172:415-421.
[20]	林燕华,王毅力.负载TiO2的活性炭纤维改性电极电吸附除氟[J].环境工程学报, 2012,6(7):2242-2248. Lin Y, Wang Y. Fluorine removal by electro-adsorption of TiO2-loaded activated carbon fiber modified electrode[J]. Journal of Environmental Engineering, 2012,6(7):2242-2248.
[21]	胡欣琪,杨硕,张旭,等.电增强载铝活性炭纤维吸附除氟的效果与影响因素[J].环境工程学报, 2013,7(3):951-956. Hu X, Yang S, Zhang X, et al. Effect and influencing factors of fluorine removal by electroenhanced aluminum-loaded activated carbon fiber adsorption[J]. Journal of Environmental Engineering, 2013,7(3):951-956.
[22]	孙文童,王毅力.平板炭气凝胶电极电吸附除氟[J].环境工程学报, 2014,8(7):2733-2740. Sun W, Wang Y. Electroadsorption defluorination with flat carbon aerogel electrode[J]. Journal of Environmental Engineering, 2014, 8(7):2733-2740.
[23]	石闯.基于电容法和吸附法的低氟水处理实验研究[D].淮南:安徽理工大学, 2021. Shi C. Experimental study on low fluorine water treatment based on capacitance method and adsorption method[D]. Huainan:Anhui University of Technology, 2021.
[24]	GB5749-2022生活饮用水卫生标准[S]. GB5749-2022 Standards for drinking water quality[S].
[25]	杨帆,张峰,王东升,等.连续进水模式下电容去离子技术除氟研究[J].现代化工, 2022,42(1):105-110. Yang F, Zhang F, Wang D, et al. Study on fluoride removal by capacitive deionization technology under continuous water inflow mode[J]. Modern Chemical Industry, 2022,42(1):105-110.
[26]	Bai Z, Hu C, Liu H, et al. Selective adsorption of fluoride from drinking water using NiAl-layered metal oxide film electrode[J]. Journal of Colloid and Interface Science, 2019,539:146-151.
[27]	苏冰琴,温宇涛,林昱廷,等.改性活性炭纤维活化过硫酸盐深度处理焦化废水及降解吡啶[J].中国环境科学, 2023,43(2):576-591. Su B, Wen Y, Lin Y, et al. Advanced treatment of coking wastewater and degradation of pyridine using modified activated carbon fiber activating peroxymonosulfate[J]. China Environmental Science, 2023, 43(2):576-591.
[28]	Li Y, Yang Y, Qu G, et al. Reuse of secondary aluminum ash:Study on removal of fluoride from industrial wastewater by mesoporous alumina modified with citric acid[J]. Environmental Technology & Innovation, 2022,28:102868.
[29]	Wei Y F, Wang L, Li H B, et al. Synergistic fluoride adsorption by composite adsorbents synthesized from different types of materials-a review[J]. Frontiers in Chemistry, 2022,10:900660.
[30]	He Y, Zhang L, An X, et al. Enhanced fluoride removal from water by rare earth (La and Ce) modified alumina:Adsorption isotherms, kinetics, thermodynamics and mechanism[J]. Science of The Total Environment, 2019,688:184-198.
[31]	Chen J, Yang R, Zhang Z, et al. Removal of fluoride from water using aluminum hydroxide-loaded zeolite synthesized from coal fly ash[J]. Journal of Hazardous Materials, 2022,421:126817.