Removal Study of Crystal Violet and Methylene Blue From Aqueous Solution by Activated Carbon Embedded Zero-Valent Iron: Effect of Reduction Methods

doi:10.3389/fenvs.2021.799264

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	Removal Study of Crystal Violet and Methylene Blue From Aqueous Solution by Activated Carbon Embedded Zero-Valent Iron: Effect of Reduction Methods
	Wang, Yongmei 2; Chen, Tiantian 3; Zhang, Xiaolin 1; Mwamulima, Teza 1
刊名	FRONTIERS IN ENVIRONMENTAL SCIENCE
	2021-12-21
卷号	9 页码:13
关键词	water pollution activated carbon zero valent iron crystal violet methylene blue
DOI	10.3389/fenvs.2021.799264
通讯作者	Chen, Tiantian(chentian0819@163.com)
英文摘要	Zero valent iron (ZVI) particles were embedded into porous materials to avoid aggregation and separation problems in the controlled synthesis process. To investigate the adsorption mechanism of crystal violet and methylene blue, activated carbon (AC) and AC-based ZVI extraction by solid-phase and liquid-phase reduced approaches was conducted. Characterization methods of specific surface area, scanning electron microscopy (SEM), and x-ray diffractograms (XRD) were used to elucidate the structure of adsorbents, and the adsorption capacities of crystal violet and methylene blue were obtained under experimental conditions of various pH values (2.0-10.0), adsorption times (0-72 h), and temperatures (30-50 degrees C). The adsorption of crystal violet/methylene blue was controlled by both chemisorption and reduction. The adsorption processes were fitted to a pseudo-second-order kinetic model, and that of reduction kinetics was suitable to pseudo-first-order kinetic model. The thermodynamic study revealed that the adsorption of crystal violet and methylene blue was endothermic and spontaneous, and the adsorption isotherms fitted well to the Langmuir model. Different adsorption capacities of crystal violet and methylene blue on various adsorbents were found, indicating that both the properties of adsorbents (pore size, specific surface area, and chemical functional groups) and the structures of adsorbates had significant effect on the removal of dye molecules.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000739077500001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177659]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Chen, Tiantian
作者单位	1.Ocean Univ China, Coll Environm Sci & Engn, Qingdao, Peoples R China 2.Shandong Univ Sci & Technol, Coll Safety & Environm Engn, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yongmei,Chen, Tiantian,Zhang, Xiaolin,et al. Removal Study of Crystal Violet and Methylene Blue From Aqueous Solution by Activated Carbon Embedded Zero-Valent Iron: Effect of Reduction Methods[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2021,9:13.
APA	Wang, Yongmei,Chen, Tiantian,Zhang, Xiaolin,&Mwamulima, Teza.(2021).Removal Study of Crystal Violet and Methylene Blue From Aqueous Solution by Activated Carbon Embedded Zero-Valent Iron: Effect of Reduction Methods.FRONTIERS IN ENVIRONMENTAL SCIENCE,9,13.
MLA	Wang, Yongmei,et al."Removal Study of Crystal Violet and Methylene Blue From Aqueous Solution by Activated Carbon Embedded Zero-Valent Iron: Effect of Reduction Methods".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021):13.