151
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Chen W, Ouyang ZY, Qian C, Yu HQ. Induced structural changes of humic acid by exposure of polystyrene microplastics: A spectroscopic insight. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:1-7. [PMID: 29049941 DOI: 10.1016/j.envpol.2017.10.027] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 09/21/2017] [Accepted: 10/07/2017] [Indexed: 06/07/2023]
Abstract
The occurrence of microplastics (MPs) as emerging contaminants in the environment may cause changes in water or sediment characteristics, and further affect their biogeochemical cycles. Thus, insights into the interactions between dissolved organic matter (DOM) and MPs are essential for the assessment of environmental impacts of MPs in ecosystems. Integrating spectroscopic methods with chemometric analyses, this work explored the chemical and microstructural changes of DOM-MP complex to reveal the mechanism of DOM-MP interaction at a molecular level. MPs were found to interact with the aromatic structure of DOM via π-π conjugation, then be entrapped in the DOM polymers by the carboxyl groups and C=O bonds, constituting a highly conjugated co-polymer with increased electron density. This induced the fluorescence intensity increase in DOM. The interaction affinity of DOM-MP was highly dependent on the MP size and solution pH. This work offers a new insight into the impact of MP discharge on environment and may provide an analytical framework for evaluating MP hetero-aggregation and the roles of MPs in the transportation of other contaminants. Furthermore, the integrated methods used in this work exhibit potential applications in exploring the fragmentation processes of MPs and formation of secondary MPs under natural conditions.
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Affiliation(s)
- Wei Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China; School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhen-Yu Ouyang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Chen Qian
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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152
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Liu B, Chen X, Zheng H, Wang Y, Sun Y, Zhao C, Zhang S. Rapid and efficient removal of heavy metal and cationic dye by carboxylate-rich magnetic chitosan flocculants: Role of ionic groups. Carbohydr Polym 2018; 181:327-336. [DOI: 10.1016/j.carbpol.2017.10.089] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/20/2017] [Accepted: 10/26/2017] [Indexed: 01/17/2023]
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153
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Liang X, Fan X, Li R, Li S, Shen S, Hu D. Efficient removal of Cr(VI) from water by quaternized chitin/branched polyethylenimine biosorbent with hierarchical pore structure. BIORESOURCE TECHNOLOGY 2018; 250:178-184. [PMID: 29172181 DOI: 10.1016/j.biortech.2017.10.071] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/09/2017] [Accepted: 10/18/2017] [Indexed: 06/07/2023]
Abstract
A novel chitin-based biosorbent (QCP) was synthesized by cross-linking quaternized chitin and branched polyethylenimine with the aid of epichlorohydrin for efficient removal of Cr(VI) from water. Because it possessed both quaternary ammonium groups and amino groups as well as the hierarchical pore structure, QCP presented a maximum adsorption capacity of 387.7 mg/g according to the Langmuir isotherm at 25 °C. The biosorption of QCP achieved the equilibrium within 40 min and followed the pseudo-second-order kinetic model. QCP worked well even in the solution with high pH and high content of competing anions and, it exhibited an excellent reusability. The main Cr(VI) uptake mechanism was confirmed to be electrostatic attractions between Cr(VI) anions and quaternary ammonium groups as well as the protonated amino groups, and followed by partial reduction of Cr(VI) to Cr(III) by amines and hydroxyls. This work may provide a potential for Cr(VI) removal by chitin-based biosorbents.
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Affiliation(s)
- Xingtang Liang
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China; School of Petroleum and Chemical Engineering, Qinzhou University, Qinzhou 535000, China
| | - Xiaoyu Fan
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Runmei Li
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Shirong Li
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Shukun Shen
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Daodao Hu
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China.
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154
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Zhou Y, Guo H, Yan G, Wang Z, Li X, Yang Z, Zheng A, Wang J. Fluidized bed reaction towards crystalline embedded amorphous Si anode with much enhanced cycling stability. Chem Commun (Camb) 2018; 54:3755-3758. [DOI: 10.1039/c8cc00575c] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluidized bed reaction route was introduced for the first time to prepare amorphous–crystalline silicon anode materials with excellent cycle stabilities.
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Affiliation(s)
- Yu Zhou
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Huajun Guo
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Guochun Yan
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Zhixing Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Xinhai Li
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Zhewei Yang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
| | - Anxiong Zheng
- Zhejiang Zhongning Silicon Industry Co., Ltd
- Quzhou 324000
- P. R. China
| | - Jiexi Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- P. R. China
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155
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Wang W. Chromium (Ⅵ) removal from aqueous solutions through powdered activated carbon countercurrent two-stage adsorption. CHEMOSPHERE 2018; 190:97-102. [PMID: 28985541 DOI: 10.1016/j.chemosphere.2017.09.141] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/29/2017] [Accepted: 09/25/2017] [Indexed: 05/27/2023]
Abstract
To exploit the adsorption capacity of commercial powdered activated carbon (PAC) and to improve the efficiency of Cr(VI) removal from aqueous solutions, the adsorption of Cr(VI) by commercial PAC and the countercurrent two-stage adsorption (CTA) process was investigated. Different adsorption kinetics models and isotherms were compared, and the pseudo-second-order model and the Langmuir and Freundlich models fit the experimental data well. The Cr(VI) removal efficiency was >80% and was improved by 37% through the CTA process compared with the conventional single-stage adsorption process when the initial Cr(VI) concentration was 50 mg/L with a PAC dose of 1.250 g/L and a pH of 3. A calculation method for calculating the effluent Cr(VI) concentration and the PAC dose was developed for the CTA process, and the validity of the method was confirmed by a deviation of <5%.
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Affiliation(s)
- Wenqiang Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China.
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156
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Wang N, Yang D, Wang X, Yu S, Wang H, Wen T, Song G, Yu Z, Wang X. Highly efficient Pb(ii) and Cu(ii) removal using hollow Fe3O4@PDA nanoparticles with excellent application capability and reusability. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00541a] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The easily synthesized Fe3O4@PDA material showed excellent performance for Pb(ii) and Cu(ii) elimination from wastewater, and its adsorption mechanism was revealed.
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Affiliation(s)
- Ning Wang
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- PR China
- College of Environmental Science and Engineering
| | - Dongxu Yang
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- PR China
- College of Environmental Science and Engineering
| | - Xiangxue Wang
- College of Environmental Science and Engineering
- North China Electric Power University
- Beijing 102206
- PR China
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources
| | - Shujun Yu
- College of Environmental Science and Engineering
- North China Electric Power University
- Beijing 102206
- PR China
| | - Hongqing Wang
- School of Chemistry and Chemical Engineering
- University of South China
- Hengyang
- PR China
| | - Tao Wen
- College of Environmental Science and Engineering
- North China Electric Power University
- Beijing 102206
- PR China
| | - Gang Song
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources
- Guangzhou University
- Guangzhou
- 510006
- China
| | - Zhimin Yu
- Department of Biology and Environmental Engineering
- Hefei University
- Hefei 230000
- PR China
| | - Xiangke Wang
- College of Environmental Science and Engineering
- North China Electric Power University
- Beijing 102206
- PR China
- Department of Biology and Environmental Engineering
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157
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Synthesis of magnetically separable porous BN microrods@Fe3O4 nanocomposites for Pb(II) adsorption. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.060] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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158
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One-pot synthesis of arginine modified hydroxyapatite carbon microsphere composites for efficient removal of U(VI) from aqueous solutions. Sci Bull (Beijing) 2017; 62:1609-1618. [PMID: 36659479 DOI: 10.1016/j.scib.2017.10.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/18/2017] [Accepted: 09/30/2017] [Indexed: 01/21/2023]
Abstract
Uranium was not only the main source of nuclear energy but also one of the long-lived radionuclide. Herein, a novel arginine modified hydroxyapatite carbon microsphere composites (defined as C@HAp/Arg) obtained promptly via a one-step mild hydrothermal method, was applied to remove U(VI) from aqueous solutions. Based on the characterization of transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transformed infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), the synthesized C@HAp/Arg presented globular morphology and abundant functional groups (e.g., COO-), which were beneficial to its combination with U(VI). The interaction mechanism and removal capability of U(VI) on C@HAp/Arg were studied by batch adsorption technique and spectroscopy analysis. The results implied that U(VI) can form strong surface complexes on C@HAp/Arg. The kinetics adsorption of U(VI) followed pseudo-second-order kinetic model with high removal efficiency (∼95% within 5h at pH 5.0). The adsorption isotherms were well fitted by Langmuir model, implying that U(VI) uptake on C@HAp/Arg was monolayer coverage. It was found that the maximum adsorption capacities of CSs, C@HAp and C@HAp/Arg toward U(VI) were calculated to be 23.16, 72.09 and 569.66mg/g, respectively, at 298.15K and pH 5.0, and thermodynamic parameters revealed that the adsorption processes of U(VI) were spontaneous and endothermic. In addition, effect of co-existed ions and CO32- concentrations demonstrated that U(VI) adsorption on C@HAp/Arg was weakly interfered by foreign ions and carbonate concentrations. More importantly, the adsorption performance of U(VI) on C@HAp/Arg was still over ∼87% after five cycles. Therefore, it was noted that the versatile C@HAp/Arg could be potentially used as a powerful building block for the enrichment and disposal of U(VI) from aqueous solutions, which could efficiently reduce the potential toxicity of U(VI) in the U(VI)-contaminated water.
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159
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Yan X, Wang Z, Zhang K, Si M, Liu M, Chai L, Liu X, Shi Y. Bacteria-enhanced dilute acid pretreatment of lignocellulosic biomass. BIORESOURCE TECHNOLOGY 2017; 245:419-425. [PMID: 28898839 DOI: 10.1016/j.biortech.2017.08.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/07/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
Pretreatment is indispensable for the large-scale and low-cost bio-products production from lignocellulosic biomass. Herein, a new bacteria-enhanced dilute acid pretreatment (BE-DAP) strategy was introduced. Cupriavidus basilensis B-8 as a potential bacterium for lignin degradation was employed. Multi-scale characterizations on the physicochemical structure of rice straw indicated that Cupriavidus basilensis B-8 could act on the lignin droplets formed in dilute acid pretreatment (DAP), and dig out these droplets to recover cracks and holes on rice straw surface, leaving an opened and porous structure for the easy access of enzyme to inner cellulose. Eventually, the enzymatic digestibility of RS was increased by 35-70% and 173-244% in BE-DAP compared to DAP pretreated and untreated RS, respectively. The BE-DAP strategy, as well as its physicochemical mechanism, opened new perspectives for lignocellulose pretreatment.
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Affiliation(s)
- Xu Yan
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Zhongren Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Kejing Zhang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Mengying Si
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Mingren Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Yan Shi
- School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China.
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160
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Wang C, Wang Y, Ouyang Z, Shen T, Wang X. Preparation and characterization of polymer-coated Fe3O4 magnetic flocculant. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1404613] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chen Wang
- School of Environmental Science and Engineering, Qilu University of Technology, Jinan, People’s Republic of China
- Key Laboratory of Cleaner Production and Industrial Wastes recycling and Resourcization in Universities of Shandong, Qilu University of Technology, Jinan, People’s Republic of China
| | - Yajun Wang
- School of Environmental Science and Engineering, Qilu University of Technology, Jinan, People’s Republic of China
- Key Laboratory of Cleaner Production and Industrial Wastes recycling and Resourcization in Universities of Shandong, Qilu University of Technology, Jinan, People’s Republic of China
| | - Zhizhou Ouyang
- School of Environmental Science and Engineering, Qilu University of Technology, Jinan, People’s Republic of China
- Key Laboratory of Cleaner Production and Industrial Wastes recycling and Resourcization in Universities of Shandong, Qilu University of Technology, Jinan, People’s Republic of China
| | - Tingting Shen
- School of Environmental Science and Engineering, Qilu University of Technology, Jinan, People’s Republic of China
- Key Laboratory of Cleaner Production and Industrial Wastes recycling and Resourcization in Universities of Shandong, Qilu University of Technology, Jinan, People’s Republic of China
| | - Xikui Wang
- School of Environmental Science and Engineering, Qilu University of Technology, Jinan, People’s Republic of China
- Key Laboratory of Cleaner Production and Industrial Wastes recycling and Resourcization in Universities of Shandong, Qilu University of Technology, Jinan, People’s Republic of China
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161
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Ravi T, Anuradha Jabasingh S. Preparation and characterization of higher degree-deacetylated chitosan-coated magnetic adsorbent for the removal of chromium(VI) from its aqueous mixture. J Appl Polym Sci 2017. [DOI: 10.1002/app.45878] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- T. Ravi
- Department of Chemical Engineering, School of Bio and Chemical Engineering; Sathyabama University; Chennai 600119 Tamil Nadu India
| | - S. Anuradha Jabasingh
- Process Engineering Division, School of Chemical and Bio Engineering; Addis Ababa Institute of Technology, Addis Ababa University; Addis Ababa Ethiopia
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162
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Zhao R, Li X, Li Y, Li Y, Sun B, Zhang N, Chao S, Wang C. Functionalized magnetic iron oxide/polyacrylonitrile composite electrospun fibers as effective chromium (VI) adsorbents for water purification. J Colloid Interface Sci 2017; 505:1018-1030. [DOI: 10.1016/j.jcis.2017.06.094] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 06/27/2017] [Accepted: 06/28/2017] [Indexed: 12/15/2022]
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163
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One-pot synthesis of magnetic iron oxide nanoparticle-multiwalled carbon nanotube composites for enhanced removal of Cr(VI) from aqueous solution. J Colloid Interface Sci 2017; 505:1134-1146. [DOI: 10.1016/j.jcis.2017.07.013] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/16/2017] [Accepted: 07/04/2017] [Indexed: 11/21/2022]
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164
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Peng Z, Xiong C, Wang W, Tan F, Xu Y, Wang X, Qiao X. Facile modification of nanoscale zero-valent iron with high stability for Cr(VI) remediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 596-597:266-273. [PMID: 28437645 DOI: 10.1016/j.scitotenv.2017.04.121] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 04/14/2017] [Accepted: 04/16/2017] [Indexed: 06/07/2023]
Abstract
In this study, a highly stable nanoscale zero-valent iron composite (HS-NZVI) was obtained via modifying nanoscale zero-valent iron (NZVI) with tetraethyl orthosilicate (TEOS) and hexadecyltrimethoxysilane (HDTMOS), and used for Cr(VI) remediation in aqueous solution. The obtained HS-NZVI remained stable in water without being oxidized for over 12h. After four consecutive runs, the Cr(VI) removal efficiency of HS-NZVI maintained a value of more than 82%. Moreover, the Cr(VI) removal capacity per unit weight of NZVI in HS-NZVI reached 292.8mg/g within 60min at the initial Cr(VI) concentration of 120mg/L at pH5. The Cr(VI) removal efficiency of HS-NZVI increased with decreasing solution pH, and the experimental data for Cr(VI) removal by HS-NZVI were well-described by the pseudo-first-order reaction model. Additionally, scanning electron microscope (SEM) images, X-ray diffraction (XRD) patterns and X-ray photoelectron spectroscopy (XPS) measurements of the product after reaction revealed that the mechanism of Cr(VI) remediation by HS-NZVI mainly involved adsorption, reduction and co-precipitation. Considering the advantages of easy preparation, excellent stability and reusability, and high Cr(VI) removal capacity as well as the magnetic recovery property, HS-NZVI is expected to have notably promising applications for the remediation of Cr(VI) contaminated sites.
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Affiliation(s)
- Ziling Peng
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China
| | - Chunmei Xiong
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China
| | - Wei Wang
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
| | - Fatang Tan
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China
| | - Yang Xu
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China
| | - Xinyun Wang
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China.
| | - Xueliang Qiao
- State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, PR China
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165
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Wang Z, Yang J, Li Y, Zhuang Q, Gu J. Simultaneous Degradation and Removal of CrVI
from Aqueous Solution with Zr-Based Metal-Organic Frameworks Bearing Inherent Reductive Sites. Chemistry 2017; 23:15415-15423. [DOI: 10.1002/chem.201702534] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Zhe Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Jian Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Yongsheng Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Qixin Zhuang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
| | - Jinlou Gu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 P.R. China
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166
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Min X, Wang Y, Chai L, Yang Z, Liao Q. High-resolution analyses reveal structural diversity patterns of microbial communities in Chromite Ore Processing Residue (COPR) contaminated soils. CHEMOSPHERE 2017; 183:266-276. [PMID: 28550784 DOI: 10.1016/j.chemosphere.2017.05.105] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 05/15/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
To explore how heavy metal contamination in Chromite Ore Processing Residue (COPR) disposal sites determine the dissimilarities of indigenous microbial communities, 16S rRNA gene MiSeq sequencing and advanced statistical methods were applied. 13 soil samples were collected from three COPR disposal sites in Mouding of southwestern, Shangnan of northwestern and Yima of central China. The results of analyses of variance (ANOVA), similarities (ANOSIM), and non-metric multidimensional scaling (NMDS) showed that the structural diversity of the microbial communities in the samples with high total chromium (Cr) content (more than 300 mg kg-1; High group) were significantly lesser than in the Low group (less than 90 mg kg-1) regardless of their geographical distribution. But their diversity had virtually rehabilitated under the pressures of long-term metal contamination. Furthermore, the similarity percentage (SIMPER) analysis indicated that the major dissimilarity contributors Micrococcaceae, Delftia, and Streptophyta, possibly having Cr(VI)-resistant and/or Cr(VI)-reducing capability, were dominant in the High group, while Ramlibacter and Gemmatimonas with potential resistances to other heavy metals were prevalent in the Low group. In addition, the multivariate regression tree (MRT), aggregated boosted tree (ABT), and Mantel test revealed that total Cr content affiliated with Cr(VI) was the principal factor shaping the dissimilarities between the soil microbial communities in the COPR sites. Our findings provide a deep insight of the influence of these heavy metals on the microbial communities in the COPR disposal sites and will facilitate bioremediation on such site.
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Affiliation(s)
- Xiaobo Min
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China
| | - Yangyang Wang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; College of Environment and Planning, Henan University, 475004, Kaifeng, China
| | - Liyuan Chai
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China
| | - Zhihui Yang
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China
| | - Qi Liao
- Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, 410083, Changsha, China; National Engineering Research Center for Heavy Metals Pollution Control and Treatment, 410083, Changsha, China.
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167
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Velempini T, Pillay K, Mbianda XY, Arotiba OA. Epichlorohydrin crosslinked carboxymethyl cellulose-ethylenediamine imprinted polymer for the selective uptake of Cr(VI). Int J Biol Macromol 2017; 101:837-844. [DOI: 10.1016/j.ijbiomac.2017.03.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 03/03/2017] [Accepted: 03/09/2017] [Indexed: 01/10/2023]
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168
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Cao E, Duan W, Yi L, Wang A, Zheng Y. Poly( m -phenylenediamine) functionalized Calotropis gigantea fiber for coupled adsorption reduction for Cr(VI). J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.05.087] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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169
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Min X, Li Y, Ke Y, Shi M, Chai L, Xue K. Fe-FeS2 adsorbent prepared with iron powder and pyrite by facile ball milling and its application for arsenic removal. WATER SCIENCE AND TECHNOLOGY 2017; 76:192-200. [PMID: 28708624 DOI: 10.2166/wst.2017.204] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Arsenic is one of the major pollutants and a worldwide concern because of its toxicity and chronic effects on human health. An adsorbent of Fe-FeS2 mixture for effective arsenic removal was successfully prepared by mechanical ball milling. The products before and after arsenic adsorption were characterized with scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The adsorbent shows high arsenic removal efficiency when molar ratio of iron to pyrite is 5:5. The experimental data of As(III) adsorption are fitted well with the Langmuir isotherm model with a maximal adsorption capacity of 101.123 mg/g. And As(V) data were described perfectly by the Freundlich model with a maximal adsorption capacity of 58.341 L/mg. As(III) is partial oxidized to As(V) during the adsorption process. High arsenic uptake capability and cost-effectiveness of waste make it potentially attractive for arsenic removal.
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Affiliation(s)
- Xiaobo Min
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Yangwenjun Li
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Yong Ke
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Meiqing Shi
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Liyuan Chai
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Ke Xue
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
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170
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Guan X, Chen Y, Fan H. Stepwise Deprotonation of Magnetite-Supported Gallic Acid Modulates Oxidation State and Adsorption-Assisted Translocation of Hexavalent Chromium. ACS APPLIED MATERIALS & INTERFACES 2017; 9:15525-15532. [PMID: 28448111 DOI: 10.1021/acsami.7b03061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Recently, a synergistic strategy involving reduction of carcinogenic Cr(VI) into less toxic Cr(III) followed by Cr(III) adsorption and subsequent separation by surface-engineered magnetite nanoparticles has emerged as a promising alternative to address the environmental hazards associated with Cr(VI)-contaminated water. Despite several previous attempts exploiting this synergy, modulating the oxidation state and translocation of Cr(VI) with high spatiotemporal precision remains a major challenge. Here, we report how Cr(VI) responds accordingly in a well-defined manner to deprotonation of gallic acid covalently immobilized on magnetite nanoparticles, which proceeds through a fixed spatial sequence of distinct stages. To the best of our knowledge, this proof-of-principle study, for the first time, demonstrates that accurate spatiotemporal control over the cascading reduction-adsorption process of Cr(VI) by magnetic adsorbents is feasible, which provides guidance for rational design of more exquisite, magnetite-supported surfaces, where a predictable, and hence controllable, synergy can manifest for Cr(VI) detoxification.
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Affiliation(s)
- Xiaoyu Guan
- Key Laboratory of Leather Chemistry and Engineering, (Sichuan University), Ministry of Education , Chengdu 610065, P.R. China
| | - Yi Chen
- Key Laboratory of Leather Chemistry and Engineering, (Sichuan University), Ministry of Education , Chengdu 610065, P.R. China
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Haojun Fan
- Key Laboratory of Leather Chemistry and Engineering, (Sichuan University), Ministry of Education , Chengdu 610065, P.R. China
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171
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Huang B, Liu Y, Li B, Liu S, Zeng G, Zeng Z, Wang X, Ning Q, Zheng B, Yang C. Effect of Cu(II) ions on the enhancement of tetracycline adsorption by Fe3O4@SiO2-Chitosan/graphene oxide nanocomposite. Carbohydr Polym 2017; 157:576-585. [DOI: 10.1016/j.carbpol.2016.10.025] [Citation(s) in RCA: 165] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 10/04/2016] [Accepted: 10/09/2016] [Indexed: 12/26/2022]
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172
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Su C. Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature. JOURNAL OF HAZARDOUS MATERIALS 2017; 322:48-84. [PMID: 27477792 PMCID: PMC7306924 DOI: 10.1016/j.jhazmat.2016.06.060] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/27/2016] [Accepted: 06/30/2016] [Indexed: 05/12/2023]
Abstract
This review focuses on environmental implications and applications of engineered magnetite (Fe3O4) nanoparticles (MNPs) as a single phase or a component of a hybrid nanocomposite that exhibits superparamagnetism and high surface area. MNPs are synthesized via co-precipitation, thermal decomposition and combustion, hydrothermal process, emulsion, microbial process, and green approaches. Aggregation/sedimentation and transport of MNPs depend on surface charge of MNPs and geochemical parameters such as pH, ionic strength, and organic matter. MNPs generally have low toxicity to humans and ecosystem. MNPs are used for constructing chemical/biosensors and for catalyzing a variety of chemical reactions. MNPs are used for air cleanup and carbon sequestration. MNP nanocomposites are designed as antimicrobial agents for water disinfection and flocculants for water treatment. Conjugated MNPs are widely used for adsorptive/separative removal of organics, dyes, oil, arsenic, phosphate, molybdate, fluoride, selenium, Cr(VI), heavy metal cations, radionuclides, and rare earth elements. MNPs can degrade organic/inorganic contaminants via chemical reduction or catalyze chemical oxidation in water, sediment, and soil. Future studies should further explore mechanisms of MNP interactions with other nanomaterials and contaminants, economic and green approaches of MNP synthesis, and field scale demonstration of MNP utilization.
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Affiliation(s)
- Chunming Su
- Ground Water and Ecosystems Restoration Division, National Risk Management Research Laboratory, Office of Research and Development, United States Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA.
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173
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Li N, Fu F, Lu J, Ding Z, Tang B, Pang J. Facile preparation of magnetic mesoporous MnFe 2O 4@SiO 2-CTAB composites for Cr(VI) adsorption and reduction. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:1376-1385. [PMID: 27836472 DOI: 10.1016/j.envpol.2016.10.097] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 10/22/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Chromium-contaminated water is regarded as one of the biggest threats to human health. In this study, a novel magnetic mesoporous MnFe2O4@SiO2-CTAB composite was prepared by a facile one-step modification method and applied to remove Cr(VI). X-ray diffraction, scanning electron microscopy, transmission electron microscopy, specific surface area, and vibrating sample magnetometer were used to characterize MnFe2O4@SiO2-CTAB composites. The morphology analysis showed that the composites displayed a core-shell structure. The outer shell was mesoporous silica with CTAB and the core was MnFe2O4 nanoparticles, which ensured the easy separation by an external magnetic field. The performance of MnFe2O4@SiO2-CTAB composites in Cr(VI) removal was far better than that of bare MnFe2O4 nanoparticles. There were two reasons for the effective removal of Cr(VI) by MnFe2O4@SiO2-CTAB composites: (1) mesoporous silica shell with abundant CTA+ significantly enhanced the Cr(VI) adsorption capacity of the composites; (2) a portion of Cr(VI) was reduced to less toxic Cr(III) by MnFe2O4, followed by Cr(III) immobilized on MnFe2O4@SiO2-CTAB composites, which had been demonstrated by X-ray photoelectron spectroscopy results. The adsorption of Cr(VI) onto MnFe2O4@SiO2-CTAB followed the Freundlich isotherm model and pseudo-second-order model. Tests on the regeneration and reuse of the composites were performed. The removal efficiency of Cr(VI) still retained 92.4% in the sixth cycle. MnFe2O4@SiO2-CTAB composites exhibited a great potential for the removal of Cr(VI) from water.
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Affiliation(s)
- Na Li
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Fenglian Fu
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jianwei Lu
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zecong Ding
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Bing Tang
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Jiabin Pang
- School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
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174
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Zhu H, Wu J, Fang M, Tan L, Chen C, Alharbi NS, Hayat T, Tan X. Synthesis of a core–shell magnetic Fe3O4–NH2@PmPD nanocomposite for efficient removal of Cr(vi) from aqueous media. RSC Adv 2017. [DOI: 10.1039/c7ra05314b] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The magnetic Fe3O4–NH2@PmPD composites show outstanding Cr(vi) removal performance due to the abundant nitrogen-containing functional groups.
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Affiliation(s)
- Hongshan Zhu
- Institute of Plasma Physics
- Chinese Academy of Sciences
- Hefei
- P. R. China
- University of Science and Technology of China
| | - Jin Wu
- Institute of Plasma Physics
- Chinese Academy of Sciences
- Hefei
- P. R. China
| | - Ming Fang
- Department of Chemical and Material Engineering
- Hefei University
- Hefei
- P. R. China
| | - Liqiang Tan
- Institute of Plasma Physics
- Chinese Academy of Sciences
- Hefei
- P. R. China
| | - Changlun Chen
- Institute of Plasma Physics
- Chinese Academy of Sciences
- Hefei
- P. R. China
- Department of Biological Sciences
| | - Njud S. Alharbi
- Department of Biological Sciences
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Tasawar Hayat
- NAAM Research Group
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Xiaoli Tan
- Institute of Plasma Physics
- Chinese Academy of Sciences
- Hefei
- P. R. China
- University of Science and Technology of China
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175
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Chen G, Feng J, Wang W, Yin Y, Liu H. Photocatalytic removal of hexavalent chromium by newly designed and highly reductive TiO 2 nanocrystals. WATER RESEARCH 2017; 108:383-390. [PMID: 27838021 DOI: 10.1016/j.watres.2016.11.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 10/31/2016] [Accepted: 11/03/2016] [Indexed: 06/06/2023]
Abstract
Hexavalent chromium Cr(VI), a highly toxic oxyanion, widely occurs in drinking water supplies. This study designed and synthesized a new type of highly reductive TiO2 nanocrystals for photochemical Cr(VI) removal, via the thermal hydrolysis of TiCl4 in the presence of diethylene glycol (DEG). Surface analyses and hydroxyl radical measurements suggested that DEG was chemically bonded on TiO2 surface that resulted in an internal hole-scavenging effect and a high electron-releasing capacity, making it advantageous to conventional TiO2 materials. Upon UV irradiation, the synthesized TiO2 photocatalyst exhibited fast Cr(VI) reduction kinetics in diverse water chemical conditions. Fast elimination of Cr(VI) was achieved on a time scale of seconds in drinking water matrices. The removal of Cr(VI) by reductive TiO2 exhibited a three-stage kinetic behavior: an initial fast-reaction phase, a lag phase resulting from surface precipitation of Cr(OH)3(s), and a final reaction phase due to surface regeneration from oxidation-reduction induced ripening process. The lag phase disappeared in acidic conditions that prevented the formation of Cr(OH)3(s). The catalyst exhibited extremely high electron-releasing capacity that can be reused for multiple cycles of Cr(VI) removal in drinking water treatment.
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Affiliation(s)
- Gongde Chen
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, 92521, USA; UCR Center for Catalysis, University of California, Riverside, CA, 92521, USA
| | - Ji Feng
- UCR Center for Catalysis, University of California, Riverside, CA, 92521, USA; Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Wenshou Wang
- UCR Center for Catalysis, University of California, Riverside, CA, 92521, USA; Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Yadong Yin
- UCR Center for Catalysis, University of California, Riverside, CA, 92521, USA; Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Haizhou Liu
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA, 92521, USA; UCR Center for Catalysis, University of California, Riverside, CA, 92521, USA.
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176
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Moradi A, Najafi Moghadam P, Hasanzadeh R, Sillanpää M. Chelating magnetic nanocomposite for the rapid removal of Pb(ii) ions from aqueous solutions: characterization, kinetic, isotherm and thermodynamic studies. RSC Adv 2017. [DOI: 10.1039/c6ra26356a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fe3O4@GMA–AAm nanocomposite as a novel adsorbent with high adsorption capacity for rapid removal of Pb2+ from aqueous media was synthesized.
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Affiliation(s)
- Atefeh Moradi
- Department of Applied Chemistry
- Faculty of Chemistry
- Urmia University
- Urmia
- Iran
| | | | - Reza Hasanzadeh
- Department of Organic Chemistry
- Faculty of Chemistry
- Urmia University
- Urmia
- Iran
| | - Mika Sillanpää
- Department of Chemistry
- Lappeenranta University of Technology
- Lappeenranta
- Finland
- Department of Civil and Environmental Engineering
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177
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lian Y, Bai X, Li X, Gao Z, Hu Z, Hu G. Novel fungal hyphae/Fe3O4 and N-TiO2/NG composite for adsorption and photocatalysis. RSC Adv 2017. [DOI: 10.1039/c6ra25964b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new strategy enables TiO2 particles to be suspended in solution by constructing a three-layer structure of FH, FH/Fe3O4, and FH/N-TiO2/NG.
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Affiliation(s)
- Yiren lian
- Graduate School of CAEP
- Mianyang
- China
- CAEP Institute of Technology
- Miangyang
| | - Xueyuan Bai
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Xueqian Li
- State Key Laboratory of Clean Energy Utilization
- Zhejiang University
- Hangzhou
- China
| | - Zhan Gao
- Key Lab. for Power Machinery and Engineering of M. O. E
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Zuowen Hu
- CAEP Institute of Technology
- Miangyang
- China
| | - Guozhen Hu
- CAEP Institute of Technology
- Miangyang
- China
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178
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Fan S, Wang Y, Li Y, Tang J, Wang Z, Tang J, Li X, Hu K. Facile synthesis of tea waste/Fe3O4nanoparticle composite for hexavalent chromium removal from aqueous solution. RSC Adv 2017. [DOI: 10.1039/c6ra27781k] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A tea waste/Fe3O4composite was prepared through chemical co-precipitation approach and was used for Cr(vi) removal, involving an adsorption-coupled reduction mechanism.
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Affiliation(s)
- Shisuo Fan
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
- Hefei Scientific Observing and Experimental Station of Agro-Environment
| | - Yi Wang
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
| | - Yang Li
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P. R. China
| | - Jun Tang
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
| | - Zhen Wang
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
| | - Jie Tang
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
| | - Xuede Li
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
- Hefei Scientific Observing and Experimental Station of Agro-Environment
| | - Kai Hu
- School of Resources and Environment
- Anhui Agricultural University
- Hefei
- P. R. China
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179
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Peng C, Chai L, Tang C, Min X, Song Y, Duan C, Yu C. Study on the mechanism of copper-ammonia complex decomposition in struvite formation process and enhanced ammonia and copper removal. J Environ Sci (China) 2017; 51:222-233. [PMID: 28115134 DOI: 10.1016/j.jes.2016.06.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/17/2016] [Accepted: 06/29/2016] [Indexed: 06/06/2023]
Abstract
Heavy metals and ammonia are difficult to remove from wastewater, as they easily combine into refractory complexes. The struvite formation method (SFM) was applied for the complex decomposition and simultaneous removal of heavy metal and ammonia. The results indicated that ammonia deprivation by SFM was the key factor leading to the decomposition of the copper-ammonia complex ion. Ammonia was separated from solution as crystalline struvite, and the copper mainly co-precipitated as copper hydroxide together with struvite. Hydrogen bonding and electrostatic attraction were considered to be the main surface interactions between struvite and copper hydroxide. Hydrogen bonding was concluded to be the key factor leading to the co-precipitation. In addition, incorporation of copper ions into the struvite crystal also occurred during the treatment process.
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Affiliation(s)
- Cong Peng
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Liyuan Chai
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Chongjian Tang
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China.
| | - Xiaobo Min
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Yuxia Song
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Chengshan Duan
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
| | - Cheng Yu
- Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China; Chinese National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution, Changsha 410083, China
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180
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Zhang L, Li X, Wang M, He Y, Chai L, Huang J, Wang H, Wu X, Lai Y. Highly Flexible and Porous Nanoparticle-Loaded Films for Dye Removal by Graphene Oxide-Fungus Interaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:34638-34647. [PMID: 27998101 DOI: 10.1021/acsami.6b10920] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Highly flexible and porous films with the ability to load various nanoscale adsorbents are of particular importance in the purification field. Herein, we report the sustainable and large-scale fabrication of a porous and flexible hybrid film based on the graphene oxide/hyphae interaction at a relatively low temperature of 130 °C. Under identical conditions, such films cannot be constructed with solely graphene oxide or hyphae. Moreover, through the addition of nanoscale building blocks [e.g., nanoscale poly(m-phenylenediamine) (PmPD) adsorbents] in the interaction process, the nanoparticles can be in situ loaded into the film. According to FTIR and XPS analyses, the film formation mechanisms mainly involve redox and cross-linking reactions between graphene oxide and fungus hyphae. In a proof-of-concept study, a PmPD nanoparticle-loaded hybrid film was used as a superior key component to build a flow-through adsorption device that displayed a promising adsorption performance toward dye pollutants.
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Affiliation(s)
- Liyuan Zhang
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
- Department of Civil Engineering, The University of Hong Kong , Hong Kong, P. R. China
| | - Xiaorui Li
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
| | - Mengran Wang
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
| | - Yingjie He
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
| | - Liyuan Chai
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
| | - Jianying Huang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University , Suzhou 215123, P. R. China
| | - Haiying Wang
- School of Metallurgy and Environment, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Central South University , Changsha 410083, P. R. China
| | - Xianwen Wu
- School of Chemistry and Chemical Engineering, Jishou University , Jishou 416000, P. R. China
| | - Yuekun Lai
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University , Suzhou 215123, P. R. China
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181
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Yu C, Song YX, Chai LY, Duan CS, Tang CJ, Ali M, Peng C. Comparative evaluation of short-term stress of Cd(II), Hg(II), Pb(II), As(III) and Cr(VI) on anammox granules by batch test. J Biosci Bioeng 2016; 122:722-729. [DOI: 10.1016/j.jbiosc.2016.06.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 06/12/2016] [Accepted: 06/14/2016] [Indexed: 11/29/2022]
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182
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Wu C, Zou Q, Xue SG, Pan WS, Yue X, Hartley W, Huang L, Mo JY. Effect of silicate on arsenic fractionation in soils and its accumulation in rice plants. CHEMOSPHERE 2016; 165:478-486. [PMID: 27677123 DOI: 10.1016/j.chemosphere.2016.09.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 09/06/2016] [Accepted: 09/15/2016] [Indexed: 06/06/2023]
Abstract
Four rice genotypes, two hybrid and two indica, were selected to investigate the effects of silicate (Si) application on arsenic (As) accumulation and speciation in rice and As fractionation in soil. There were significant differences in root, straw and grain biomass among genotypes (p < 0.05), and Si application significantly increased root (p < 0.05) and grain biomass (p < 0.001). Silicate addition reduced the proportion of As associated with well-crystallized hydrous oxides of Fe and Al and residual phases, whilst increasing the proportions of specifically-sorbed As and As associated with amorphous and poorly-crystalline Fe and Al hydrous oxides. Furthermore, the results indicated that the fraction proportions of non-specifically sorbed, specifically-sorbed, and associated with amorphous and poorly-crystalline hydrous oxides of Fe and Al in rhizosphere soils, were greater than non-rhizosphere soils. Silicate application had a significant effect decreasing total As concentrations in root (p < 0.005), straw (p < 0.05) and husk (p < 0.001) of rice plants. The effect of Si on reducing As accumulation in rice leaves was revealed by SXRF. Indica genotypes transported and accumulated less As than hybrid genotypes. Both percentage and concentration of iAs were lower in indica genotype XFY-9 than in hybrid genotype XWX-12. Silicate reduced iAs and DMA by 21% and 58% in grain (polished) respectively. DMA may have a greater translocation capacity from straw to grain (polished) than inorganic As. The study provides the potential for understanding As uptake mechanisms in rice and mitigating the health risks posed by As contamination in paddy fields.
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Affiliation(s)
- Chuan Wu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Qi Zou
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Sheng-Guo Xue
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Wei-Song Pan
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
| | - Xu Yue
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - William Hartley
- Crop and Environment Sciences Department, Harper Adams University, Newport, Shropshire, TF10 8NB, United Kingdom
| | - Liu Huang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jing-Yu Mo
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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183
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Yao Y, Wu G, Lu F, Wang S, Hu Y, Zhang J, Huang W, Wei F. Enhanced photo-Fenton-like process over Z-scheme CoFe 2O 4/g-C 3N 4 Heterostructures under natural indoor light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:21833-21845. [PMID: 27523044 DOI: 10.1007/s11356-016-7329-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 07/26/2016] [Indexed: 05/26/2023]
Abstract
Low-cost catalysts with high activity and stability toward producing strongly oxidative species are extremely desirable, but their development still remains a big challenge. Here, we report a novel strategy for the synthesis of a magnetic CoFe2O4/C3N4 hybrid via a simple self-assembly method. The CoFe2O4/C3N4 was utilized as a photo-Fenton-like catalyst for degradation of organic dyes in the presence of H2O2 under natural indoor light irradiation, a green and energy-saving approach for environmental cleaning. It was found the CoFe2O4/C3N4 hybrid with a CoFe2O4: g-C3N4 mass ratio of 2:1 can completely degrade Rhodamine B nearly 100 % within 210 min under room-light irradiation. The effects of the amount of H2O2 (0.01-0.5 M), initial dye concentration (5-20 mg/L), solution pH (3.08-10.09), fulvic acid concentration (5-50 mg/L), different dyes and catalyst stability on the organic dye degradation were investigated. The introduction of CoFe2O4 on g-C3N4 produced an enhanced separation efficiency of photogenerated electron - hole pairs by a Z-scheme mechanism between the interfaces of g-C3N4 and CoFe2O4, leading to an excellent activity as compared with either g-C3N4 or CoFe2O4 and their mixture. This study demonstrates an efficient way to construct the low-cost magnetic CoFe2O4/C3N4 heterojunction as a typical Z-scheme system in environmental remediation.
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Affiliation(s)
- Yunjin Yao
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China.
- CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Material Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Guodong Wu
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China
| | - Fang Lu
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China
| | - Shaobin Wang
- Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA, 6845, Australia
| | - Yi Hu
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China
| | - Jie Zhang
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China
| | - Wanzheng Huang
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China
| | - Fengyu Wei
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei, 230009, China.
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184
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He J, Long Y, Wang Y, Wei C, Zhan J. Aerosol-Assisted Self-Assembly of Reticulated N-Doped Carbonaceous Submicron Spheres for Effective Removal of Hexavalent Chromium. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16699-16707. [PMID: 27299376 DOI: 10.1021/acsami.6b04292] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This Research Article described a facile one-step method to prepare reticulated N-doped carbonaceous submicron spheres. Through a simple aerosol-assisted technology, glucosamine sulfate used as a carbon source was aerosolized and carbonized to functionalized carbonaceous submicron spheres. The electrostatic attraction between protonated amino groups and sulfate in the aerosol droplets induced a self-assembly and led to the formation of reticular structure, avoiding the use of templates. Compared to bare carbonaceous materials produced from glucose, reticulated N-doped carbonaceous spheres exhibit higher efficiency in the removal of Cr(VI), where the doping of element nitrogen led to electrostatic attraction between protonated nitrogen and chromium ions, and reticulated structure created relatively higher surface area and pore volume, facilitating materials to contact with Cr(VI) ions. XPS characterization proved these novel N-doped carbonaceous materials could effectively transform Cr(VI) to less toxic Cr(III) because of the surface reducing groups. For the practical application, several factors including the initial pH, materials dosage and recycle numbers on the removal performance were studied.
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Affiliation(s)
- Jiawei He
- School of Food and Environment, Dalian University of Technology , Panjin, 124221, P. R. China
| | - Yuan Long
- School of Food and Environment, Dalian University of Technology , Panjin, 124221, P. R. China
| | - Yiyan Wang
- School of Food and Environment, Dalian University of Technology , Panjin, 124221, P. R. China
| | - Chaoliang Wei
- School of Chemistry, Dalian University of Technology , Dalian, 116024, P. R. China
| | - Jingjing Zhan
- School of Food and Environment, Dalian University of Technology , Panjin, 124221, P. R. China
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185
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Li K, Li P, Cai J, Xiao S, Yang H, Li A. Efficient adsorption of both methyl orange and chromium from their aqueous mixtures using a quaternary ammonium salt modified chitosan magnetic composite adsorbent. CHEMOSPHERE 2016; 154:310-318. [PMID: 27060639 DOI: 10.1016/j.chemosphere.2016.03.100] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 03/12/2016] [Accepted: 03/21/2016] [Indexed: 06/05/2023]
Abstract
A quaternary ammonium salt modified chitosan magnetic composite adsorbent (CS-CTA-MCM) was prepared by combination of Fe3O4 nanoparticles. Various techniques were used to characterize the molecular structure, surface morphology, and magnetic feature of this composite adsorbent. CS-CTA-MCM was employed for the removal of Cr(VI) and methyl orange (MO), an anionic dye, from water in respective single and binary systems. Compared with chitosan magnetic adsorbent (CS-MCM) without modification, CS-CTA-MCM shows evidently improved adsorption capacities for both pollutants ascribed to the additional quaternary ammonium salt groups. Based on the adsorption equilibrium study, MO bears more affinity to CS-CTA-MCM than Cr(VI) causing a considerable extent of preferential adsorption of dye over metal ions in their aqueous mixture. However, at weak acidic solutions, Cr(VI) adsorption is evidently improved due to more efficient Cr(VI) forms, i.e. dichromate and monovalent chromate, binding to this chitosan-based adsorbent. Thus chromium could be efficient removal together with MO at suitable pH conditions. The adsorption isotherms and kinetics indicate that adsorptions of Cr(VI) and MO by CS-CTA-MCM both follow a homogeneous monolayer chemisorption process. This magnetic adsorbent after saturated adsorption could be rapidly separated from water and easily regenerated using dilute NaOH aqueous solutions then virtually reused with little adsorption capacity loss.
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Affiliation(s)
- Kun Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
| | - Pei Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
| | - Jun Cai
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
| | - Shoujun Xiao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China.
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, PR China
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186
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Qin L, Yan L, Chen J, Liu T, Yu H, Du B. Enhanced Removal of Pb2+, Cu2+, and Cd2+ by Amino-Functionalized Magnetite/Kaolin Clay. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00657] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lilu Qin
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
| | - Liangguo Yan
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
| | - Jian Chen
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
| | - Tiantian Liu
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
| | - Haiqin Yu
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
| | - Bin Du
- School of Resources
and Environment, Shandong Provincial
Engineering Technology Research Center for Groundwater Numerical Simulation
and Contamination Control, University of Jinan, Jinan 250022, P. R. China
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187
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Ma Y, Zhang B, Ma H, Yu M, Li L, Li J. Electrospun nanofibrous polyethylenimine mat: a potential adsorbent for the removal of chromate and arsenate from drinking water. RSC Adv 2016. [DOI: 10.1039/c5ra26973c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A nanofibrous adsorbent for sub-ppm level chromate and arsenate removal from drinking water has been fabricated via an electrospinning technique.
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Affiliation(s)
- Yao Ma
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
- University of Chinese Academy of Sciences
| | - Bowu Zhang
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Hongjuan Ma
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Ming Yu
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Linfan Li
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Jingye Li
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
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188
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Lu Z, Zhao X, Zhu Z, Song M, Gao N, Wang Y, Ma Z, Shi W, Yan Y, Dong H. A novel hollow capsule-like recyclable functional ZnO/C/Fe3O4 endowed with three-dimensional oriented recognition ability for selectively photodegrading danofloxacin mesylate. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00927a] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The functional ZnO/C/Fe3O4 exhibits high photocatalytic activity and possesses good selectivity.
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Affiliation(s)
- Ziyang Lu
- School of the Environment and Safety Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
- School of Chemistry & Chemical Engineering
| | - Xiaoxu Zhao
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Zhi Zhu
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Minshan Song
- School of Mathematics and Physics
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- PR China
| | - Nailing Gao
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Youshan Wang
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Zhongfei Ma
- School of the Environment and Safety Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Weidong Shi
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Yongsheng Yan
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Hongjun Dong
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
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189
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Yan X, Chai L, Li Q, Ye L, Yang B, Wang Q. Pathway of zinc oxide formation by seed-assisted and controlled double-jet precipitation. CrystEngComm 2016. [DOI: 10.1039/c5ce01916h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
ZnO can be well formed in a short time at room temperature via seed-assisted and controlled double-jet precipitation.
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Affiliation(s)
- Xu Yan
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
| | - Liyuan Chai
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
- Chinese National Engineering Research Centre for Control & Treatment of Heavy Metal Pollution
- Changsha 410083, China
| | - Qingzhu Li
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
- Chinese National Engineering Research Centre for Control & Treatment of Heavy Metal Pollution
- Changsha 410083, China
| | - Lijun Ye
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
| | - Bentao Yang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
| | - Qingwei Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083, China
- Chinese National Engineering Research Centre for Control & Treatment of Heavy Metal Pollution
- Changsha 410083, China
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190
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Zhang J, Chen H, Chen Z, He J, Shi W, Liu D, Chi H, Cui F, Wang W. Microstructured macroporous adsorbent composed of polypyrrole modified natural corncob-core sponge for Cr(vi) removal. RSC Adv 2016. [DOI: 10.1039/c6ra07687d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high-performance, cost-effective and spongy adsorbent is rationally designed for Cr(vi) removal based on polypyrrole modified corncob-core natural microsheets.
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Affiliation(s)
- Jianqiao Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Huan Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Zi Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Jiaojie He
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wenxin Shi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Dongmei Liu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Huizhong Chi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
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191
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Venkateswarlu S, Yoon M. Core-Shell Ferromagnetic Nanorod Based on Amine Polymer Composite (Fe3O4@DAPF) for Fast Removal of Pb(II) from Aqueous Solutions. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25362-72. [PMID: 26496966 DOI: 10.1021/acsami.5b07723] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Heavy metal ion removal from wastewater constitutes an important issue in the water treatment industry. Although a variety of nanomaterials have been developed for heavy metal removal via adsorption, the adsorption capacity, removal efficiency, and material recyclability still remain a challenge. Here, we present novel Fe3O4@DAPF core-shell ferromagnetic nanorods (CSFMNRs) for the removal of Pb(II) from aqueous solutions; they were prepared by the facile surface modification of twin-like ferromagnetic Fe3O4 nanorods using a 2,3-diaminophenol and formaldehyde (DAPF)-based polymer. The crystallinity and structure of the Fe3O4 nanorods were confirmed via X-ray diffraction (XRD). Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) revealed the core-shell morphology and composition of the materials. Pb(II) removal using the prepared Fe3O4@DAPF CSFMNRs was assessed, and comparable adsorption capacities (83.3 mg g(-1)) to the largest value were demonstrated. A thermodynamic study of the adsorption clearly indicated that the adsorption was exothermic and spontaneous. Due to the ferromagnetic properties with a high saturation magnetization value (56.1 emu g(-1)) of the nanorods, the nanorods exhibited excellent reusability with one of the fastest recovery times (25 s) among reported materials. Therefore, the Fe3O4@DAPF CSFMNRs can serve as recyclable adsorbent materials and as an alternative to commonly used sorbent materials for the rapid removal of heavy metals from aqueous solutions.
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Affiliation(s)
- Sada Venkateswarlu
- Department of Nanochemistry, College of Bionano, Gachon University , Sungnam 13120, Republic of Korea
| | - Minyoung Yoon
- Department of Nanochemistry, College of Bionano, Gachon University , Sungnam 13120, Republic of Korea
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192
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Abstract
The ever-increasing human demand for safe and clean water is gradually pushing conventional water treatment technologies to their limits. It is now a popular perception that the solutions to the existing and future water challenges will hinge upon further developments in nanomaterial sciences. The concept of rational design emphasizes on 'design-for-purpose' and it necessitates a scientifically clear problem definition to initiate the nanomaterial design. The field of rational design of nanomaterials for water treatment has experienced a significant growth in the past decade and is poised to make its contribution in creating advanced next-generation water treatment technologies in the years to come. Within the water treatment context, this review offers a comprehensive and in-depth overview of the latest progress in rational design, synthesis and applications of nanomaterials in adsorption, chemical oxidation and reduction reactions, membrane-based separation, oil-water separation, and synergistic multifunctional all-in-one nanomaterials/nanodevices. Special attention is paid to the chemical concepts related to nanomaterial design throughout the review.
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Affiliation(s)
- Renyuan Li
- Water Desalination and Reuse Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
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193
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Huang B, Liu Y, Li B, Zeng G, Hu X, Zheng B, Li T, Jiang L, Tan X, Zhou L. Synthesis of graphene oxide decorated with core@double-shell nanoparticles and application for Cr(vi) removal. RSC Adv 2015. [DOI: 10.1039/c5ra22862j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A novel graphene oxide composite, namely Fe3O4@SiO2@ chitosan/GO nanocomposite (MSCG) was synthesized for decontamination of Cr(vi) from aqueous solution.
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194
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Zhang XP, Liu FQ, Zhu CQ, Xu C, Chen D, Wei MM, Liu J, Li CH, Ling C, Li AM, You XZ. A novel tetraethylenepentamine functionalized polymeric adsorbent for enhanced removal and selective recovery of heavy metal ions from saline solutions. RSC Adv 2015. [DOI: 10.1039/c5ra16969k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel tetraethylenepentamine functionalized polymeric adsorbent with polymethacrylate–divinylbenzene as the substrate was facilely prepared for the enhanced removal and selective recovery of Cu(ii) and Ni(ii) from saline solutions.
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195
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Shi W, Lu D, Wang L, Teng F, Zhang J. Core–shell structured Fe3O4@SiO2@CdS nanoparticles with enhanced visible-light photocatalytic activities. RSC Adv 2015. [DOI: 10.1039/c5ra22295h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Uniform core–shell structured Fe3O4@SiO2@CdS is synthesized by a facile chelating-assistant growth route, which enhances the photocatalytic activities.
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Affiliation(s)
- Wen Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Deli Lu
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- P. R. China
| | - Lingzhi Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Fei Teng
- Innovative Research Laboratory of Environment & Energy
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring & Pollution Control
- School of Environmental Science and Engineering
- Nanjing University of Information Science & Technology
- P. R. China
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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