Highly efficient removal of phosphate using a novel Fe-La binary (hydro) oxide as adsorbent: behavior and mechanism
Zhang, Wei1,2; Wang, Xiaowen3; Chen, Jing1; Zhang, Gaosheng1; Zhang, Gaosheng(Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Yantai 264003, Shandong, Peoples R China)
2017-07-01
发表期刊DESALINATION AND WATER TREATMENT
ISSN1944-3994
卷号83页码:98-110
产权排序第1完成单位
摘要Phosphate has been proved to be one of the main elements causing eutrophication of water bodies. However, the elevated phosphate concentrations in the water bodies are often due to the excess discharge of wastewater containing phosphate. Therefore, treatment of elevated phosphate-containing wastewater is of vital importance to alleviate the situation. In this study, a novel Fe-La binary (hydro) oxide adsorbent was synthesized via a facile coprecipitation method for effective phosphate removal from wastewater. The adsorbent grains were formed of primary nanoparticles. Batch experiments were carried out to investigate adsorption kinetics and equilibrium. The adsorption was fast and well fitted by the pseudo-second-order equation, indicating that the adsorption process might be chemical sorption. The adsorption isotherms could be well described by Freundlich model and the maximal adsorption capacity reached 80.7 mg/g at pH 6.0 +/- 0.1 and 67.4 mg/g at pH 9.0 +/- 0.1, respectively, much higher than many reported adsorbents. The phosphate adsorption was pH dependent and weakly acidic condition was favorable for the adsorption. The phosphatead sorption might be mainly achieved via the replacement of surface hydroxyl groups at the solid surface and the formation of inner-sphere surface complexes. Moreover, the spent adsorbent could be effectively regenerated using dilute NaOH solution and used repeatedly. All these results suggest that the adsorbent maybe a promising alternative for phosphate removal.
关键词Fe-la Binary (Hydro)Oxide Phosphate Adsorption Removal
DOI10.5004/dwt.2017.21046
项目资助者National Natural Science Foundation of China(51478457) ; open Fund of the Jiangsu Key Laboratory for Environment Functional Materials(SJHG1312)
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收录类别SCI
关键词[WOS]AQUEOUS-SOLUTIONS ; WASTE-WATER ; LANTHANUM OXIDE ; ALUMINUM-OXIDE ; ADSORPTION ; PHOSPHORUS ; RECOVERY ; SORPTION ; KINETICS ; SPECTROSCOPY
文章类型Article
语种英语
WOS研究方向Engineering ; Water Resources
WOS记录号WOS:000412878800011
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/23460
专题中科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
山东省海岸带环境过程重点实验室
通讯作者Zhang, Gaosheng; Zhang, Gaosheng(Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Yantai 264003, Shandong, Peoples R China)
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Yantai 264003, Shandong, Peoples R China
2.Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China
3.Yantai 2 Middle Sch Shandong Prov, 57th Chuangxin Rd, Yantai 264003, Shandong, Peoples R China
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GB/T 7714
Zhang, Wei,Wang, Xiaowen,Chen, Jing,et al. Highly efficient removal of phosphate using a novel Fe-La binary (hydro) oxide as adsorbent: behavior and mechanism[J]. DESALINATION AND WATER TREATMENT,2017,83:98-110.
APA Zhang, Wei,Wang, Xiaowen,Chen, Jing,Zhang, Gaosheng,&Zhang, Gaosheng.(2017).Highly efficient removal of phosphate using a novel Fe-La binary (hydro) oxide as adsorbent: behavior and mechanism.DESALINATION AND WATER TREATMENT,83,98-110.
MLA Zhang, Wei,et al."Highly efficient removal of phosphate using a novel Fe-La binary (hydro) oxide as adsorbent: behavior and mechanism".DESALINATION AND WATER TREATMENT 83(2017):98-110.
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