电场辅助活性炭吸附法去除水中的Cu<sup>2+</sup>

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (550 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Adsorption of Cu²⁺ from water by activated carbon under an assisted electrical field had been researched, including the adsorption mechanism, influence of pH value and the regeneration of the activated carbon electrodes. The results showed that the removal rate of Cu²⁺increased significantly after adding electric field. When the voltage between the active carbon electrodes was 1.0V, the removal rate of Cu²⁺ increased 223.5%. According to the analysis of Langmuir and Freundlich isotherm models, the adsorption of Cu²⁺ on the activated carbon electrode mainly depended on the double electric layer formed on the surface of the activated carbon, not only the chemical adsorption points on surface of the activated carbon. pH value had a great influence on the adsorption of Cu²⁺ by activated carbon. When pH value was too low, H⁺ and Cu²⁺ in water competed for the points of chemical adsorption and double electric layer on the surface of activated carbon. It was found that short circuit of the electrodes can improve the degree of desorption and desorption rate of Cu²⁺, and the degree of desorption of Cu²⁺ was 79.1%. It can be seen from FTIR that Cu²⁺ adsorbed by surface functional groups of carboxyl and carbonyl was difficult to be desorbed. When the cycle of adsorption-desorption was 2-4times, the electrostatic adsorption of double layers was the dominated modes, which improved the desorption rate and the regeneration of electrodes.

Key words： electric field activated carbon adsorption copper ion desorption

Received: 01 June 2020

PACS:

X703.1

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	GAO Xin-yuan
	LI Ai-min
	LIU Pei-chun
	LI Yang
	SONG Hai-ou
	LIU Yu-bin
	ZHAN Shu-yan

Cite this article:

GAO Xin-yuan,LI Ai-min,LIU Pei-chun等. Removal of Cu²⁺ from water by activated carbon under an assisted electrical field[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(2): 677-683.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I2/677

[1]	丁佳红,杨超英,薛正莲,等.Cu2+对水稻萌发及生理指标的影响[J]. 安徽工程大学学报, 2007,22(3):5-7.Ding J H, Yang C Y, Xue Z L, et al. Effect of Cu2+ on sprouting and physiological index of Oryza sativa[J]. Journal of Anhui University of Technology and Science, 2007,22(3):5-7.
[2]	赵岩,孔强,付荣恕.Cu2+、Cd2+和Cr6+对孔雀鱼的单一与联合毒性效应[J]. 供水技术, 2009,6:10-12.Zhao Y, Kong Q, Fu R S, et al. Single and joint toxicity of Cu2+, Cd2+ and Cr6+ on Poecilia reticulate[J]. Water Technology, 2009,6:10-12.
[3]	王夏芳.铜离子对环境危害现状及对策研究[J]. 国土与自然资源研究, 2015,1:57-59.Wang X F. The dangers of copper ions on the environment and research on countermeasure[J]. Territory & Natural Resources Study, 2015,1:55-57.
[4]	Rao M M, Ramesh A, Rao G P C, et al. Removal of copper and cadmiumfrom the aqueous solutions by activated carbon derived from Ceiba pentandra hulls[J]. Journal of Hazardous Materials, 2006,129:123-129.
[5]	Shah B, Chudasama U. Synthesis and characterization of a novel hybrid material as amphoteric ion exchanger for simultaneous removal of cations and anions[J]. Journal of Hazardous Materials, 2014,276:138-148.
[6]	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 Q, Deng L, et al. Electrosorption of Cu2+in aqueous solution using CNT/PANI electrodes[J]. China Environmental Science, 2016,36(12):3650-3656.
[7]	Schwarze M, Groß M, Moritz M, et al. Micellar enhanced ultrafiltration (MEUF) of metal cations with oleylethoxycarboxylate[J]. Journal of Membrane Science, 2015,478:140-147.
[8]	朱倩,李正魁,张一品,等.纳米复合水凝胶的制备及其对重金属离子的吸附[J]. 环境科学, 2016,37(8):3192-3200.Zhu Q, Li Z K, Zhang Y P, et al. Preparation of nanocomposite hydrogel and its adsorption of heavy metal ions[J]. Environmental Science, 2016,37(8):3192-3200.
[9]	包汉峰,杨维薇,张立秋,等.污泥基活性炭去除水中重金属离子效能与动力学研究[J]. 中国环境科学, 2013,33(1):69-74.Bao H F, Yang W W, Zhang L Q, et al. Efficiency and kinetics of heavy metal removal from water by sludge-based activated carbon[J]. China Environmental Science, 2013,33(1):69-74.
[10]	Moreno-Pirejan J C, Giraldo L. Adsorption of copper from aqueous solution by activated carbons obtained by pyrolysis of cassava peel[J]. Journal of Analytical & Applied Pyrolysis, 2010,87(2):188-193.
[11]	Demirbas E, Dizge N, Sulak M T. Adsorption kinetics and equilibrium of copper from aqueous solutions using hazelnut shell activated carbon[J]. Chemical Engineering Journal, 2009,148:480-487.
[12]	Gao X Y, Wu L, Xu Q, et al. Adsorption kinetics and mechanisms of copper ions on activated carbons derived from pinewood sawdust by fast H3PO4 activation[J]. Environmental Science and Pollution Research, 2018,25(8):7907-7915.
[13]	高新源,刘佩春,李爱民,等.电吸附技术去除水中磷酸盐离子的研究[J]. 环境科学学报, 2020,40(1):155-160.Gao X Y, Liu P C, Li a m, et al. Research on removal of phosphate from water by electroadsorption technology[J]. Acta Scientiae Circumstantiae, 40(1):155-160.
[14]	Terzyk A P. The influence of activated carbon surface chemical composition on the adsorption of acetaminophen (paracetamol) in vitro:Part II. TG, FTIR, and XPS analysis of carbons and the temperature dependence of adsorption kinetics at the neutral pH[J]. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 2001,177(1):23-45.
[15]	Macías-García A, Gómez C M, Alfaro D M, et al. Study of the adsorption and electroadsorption process of Cu(II) ions within thermally and chemically modified activated carbon[J]. Journal of Hazardous Materials, 2017,328:46-55.
[16]	Puziy A M, Poddubnaya O I, Ziatdinov A M. On the chemical structure of phosphorus compounds in phosphoric acid-activated carbon[J]. Applied Surface Science, 2006,252(23):8036-8038.
[17]	Zhang B, Xu P, Qiu Y, et al. Increasing oxygen functional groups of activated carbon with non-thermal plasma to enhance mercury removal efficiency for flue gases[J]. Chemical Engineering Journal, 2015,263:1-8.
[18]	Puziy A M, Poddubnaya O I, Martnez-Alonso A, et al. Synthetic carbons activated with phosphoric-Acid I. Surface chemistry and ion binding properties[J]. Carbon, 2002,40(9):1493-1505.
[19]	Vijayaraghavan Van K, Padmesh T V N, Palanivelu K, et al. Biosorption of nickel(ii) ions onto sargassum wight ii:application of two-parameter and three-parameter isotherm models[J]. Journal of Hazardous Materials, 2006,133(1-3):304-308.
[20]	张立剑,周睿.活性炭材料对Cr(VI)的吸附研究[J].水处理技术, 2018,44(8):54-57.Zhang L J, Zhou R. Study on adsorption of Cr(VI) by activated carbon materials[J]. Technology of Water Treatment, 2018,44(8):54-57.
[21]	Wu L, Shang Z S, Wang H, et al. Production of activated carbon from walnut shell by CO2 activation in a fluidized bed reactor and its adsorption performance of copperion[J]. Journal of Material Cycles & Waste Management, 2018,20(3):1676-1688.
[22]	Wu L, Wan W, Shang Z, et al. Surface modification of phosphoric acid activated carbon by using non-thermal plasma for enhancement of Cu(II) adsorption from aqueous solutions[J]. Separation and Purification Technology, 2018,197:156-169.
[23]	Lee J H, Bae W S, Choi J H. Electrode reactions and adsorption/desorption performance related to the applied potential in a capacitive deionization process[J]. Desalination, 2010,258:159-163.
[24]	邓梅根.电化学电容器电极材料研究[M]. 合肥:中国科学技术大学出版社, 2009:26-29Deng M G. Study on electrode materials for electrochemical capacitor[M].HeFei:University of Science and Technology of China Press, 2009:26-29.
[25]	高小霞.电分析化学导论[M]. 北京:科学出版社, 2010:231-239.Gao X X. Introduction to Electric Analytical Chemistry[M]. Beijing:Science Press, 2010:231-239.
[26]	Wang X S, Qin Y. Equilibrium sorption isotherms of Cu2+ on rice bran[J]. Process Biochem., 2005,40:677-680.