Enhanced adsorption of phosphate from aqueous solution by nanostructured iron(III)-copper(II) binary oxides

	Enhanced adsorption of phosphate from aqueous solution by nanostructured iron(III)-copper(II) binary oxides
	Li, Guoliang 1,2; Gao, Song 3; Zhang, Gaosheng1,2 ; Zhang, Xiwang 4
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
	2014
卷号	235 页码:124-131
关键词	Fe-cu Binary Oxide Phosphate Adsorption Mechanism
产权排序	[Li, Guoliang; Zhang, Gaosheng] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China; [Li, Guoliang; Zhang, Gaosheng] YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China; [Gao, Song] Yantai Univ, Environm & Mat Engn Coll, Yantai 264005, Peoples R China; [Zhang, Xiwang] Monash Univ, Sch Appl Sci & Engn, Churchill, Vic 3842, Australia
通讯作者	Zhang, GS (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Yantai 264003, Shandong, Peoples R China. [email protected]
英文摘要	Phosphate is one of the main elements causing eutrophication and hence the development of high-efficiency and low-cost technologies for phosphate removal from water is of vital importance to alleviate the situation. In this study, nanostructured Fe-Cu binary oxides were synthesized via a facile coprecipitation process and its performance on phosphate removal was systematically evaluated. The as-prepared adsorbent with a Cu/Fe molar ratio of 1:2 was proved to possess the highest phosphate adsorption capacity. The adsorption isotherm data gave better fit to the Langmuir model, with a maximum phosphate adsorption capacity of 35.2 mg g(-1) at pH 7.0 +/- 0.1. Kinetic data correlated well with the pseudo-second-order kinetic model, indicating that the adsorption process might be chemical sorption. Thermodynamic data validated that the phosphate adsorption was an endothermic process. The solution pH has a big impact on the phosphate adsorption on the sorbent and acidic condition was favorable for the adsorption. The coexisting Cl, SO42- and HCO3- anions had no significant influence on phosphate adsorption, while the present F- and SiO32- could suppress its adsorption, especially at high concentration level. The phosphate adsorption might be mainly achieved by the replacement of surface sulfate and hydroxyl groups by the phosphate species and formation of inner-sphere surface complexes at the water/oxide interface. Moreover, the spent Fe-Cu binary oxide could be effectively regenerated by NaOH solution for reuse. The high phosphate uptake capability and good reusability of the Fe-Cu binary oxide make it a potentially attractive adsorbent for the removal of phosphate from water. (C) 2013 Elsevier B.V. All rights reserved.; Phosphate is one of the main elements causing eutrophication and hence the development of high-efficiency and low-cost technologies for phosphate removal from water is of vital importance to alleviate the situation. In this study, nanostructured Fe-Cu binary oxides were synthesized via a facile coprecipitation process and its performance on phosphate removal was systematically evaluated. The as-prepared adsorbent with a Cu/Fe molar ratio of 1:2 was proved to possess the highest phosphate adsorption capacity. The adsorption isotherm data gave better fit to the Langmuir model, with a maximum phosphate adsorption capacity of 35.2 mg g(-1) at pH 7.0 +/- 0.1. Kinetic data correlated well with the pseudo-second-order kinetic model, indicating that the adsorption process might be chemical sorption. Thermodynamic data validated that the phosphate adsorption was an endothermic process. The solution pH has a big impact on the phosphate adsorption on the sorbent and acidic condition was favorable for the adsorption. The coexisting Cl, SO42- and HCO3- anions had no significant influence on phosphate adsorption, while the present F- and SiO32- could suppress its adsorption, especially at high concentration level. The phosphate adsorption might be mainly achieved by the replacement of surface sulfate and hydroxyl groups by the phosphate species and formation of inner-sphere surface complexes at the water/oxide interface. Moreover, the spent Fe-Cu binary oxide could be effectively regenerated by NaOH solution for reuse. The high phosphate uptake capability and good reusability of the Fe-Cu binary oxide make it a potentially attractive adsorbent for the removal of phosphate from water. (C) 2013 Elsevier B.V. All rights reserved.
文章类型	Article
资助机构	National Natural Science Foundation of China [51178453]; Australia Research Council [DP110103533]; Monash University
收录类别	SCI
语种	英语
关键词[WOS]	SELECTIVE MESOPOROUS ADSORBENTS ; WASTE-WATER TREATMENT ; PHOSPHORUS REMOVAL ; MECHANISMS ; SEPARATION ; SORPTION ; SORBENT ; SYSTEM ; SLAGS
研究领域[WOS]	Engineering
WOS记录号	WOS:000328804200014
引用统计	被引频次：170[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/6920
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China 2.YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China 3.Yantai Univ, Environm & Mat Engn Coll, Yantai 264005, Peoples R China 4.Monash Univ, Sch Appl Sci & Engn, Churchill, Vic 3842, Australia
推荐引用方式 GB/T 7714	Li, Guoliang,Gao, Song,Zhang, Gaosheng,et al. Enhanced adsorption of phosphate from aqueous solution by nanostructured iron(III)-copper(II) binary oxides[J]. CHEMICAL ENGINEERING JOURNAL,2014,235:124-131.
APA	Li, Guoliang,Gao, Song,Zhang, Gaosheng,&Zhang, Xiwang.(2014).Enhanced adsorption of phosphate from aqueous solution by nanostructured iron(III)-copper(II) binary oxides.CHEMICAL ENGINEERING JOURNAL,235,124-131.
MLA	Li, Guoliang,et al."Enhanced adsorption of phosphate from aqueous solution by nanostructured iron(III)-copper(II) binary oxides".CHEMICAL ENGINEERING JOURNAL 235(2014):124-131.

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