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Rapid reductive degradation of dye contaminated water by using a core-shell nano zerovalent iron (nZVI). J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Chen Z, Zhang Z, Wang P, Liu T. Pivotal roles of nanoscale zerovalent iron supported on metal-organic framework material in cadmium (II) migration and transformation in soil. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:430-440. [PMID: 35575124 DOI: 10.1080/03601234.2022.2071561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) contamination in soils is of great concern, and therefore the development of effective remediation technologies for cadmium contamination is urgent. In our study, nano zero-valent iron (NZVI) supported by metal-organic framework (MOF) materials (MOF-NZVI) were prepared using NaBH4 and FeCl3 to try to solve the soil Cd remediation problem. Herein, the effects and the mechanism of MOF-NZVI for the immobilization of Cd in contaminated soil was investigated. The results showed that MOF-NZVI was capable of converting Cd in soil from weak acid extractable and reducible fractions to oxidizable and residual states, thus effectively reducing the toxicity of Cd in soil. FTIR and XRD analysis confirmed that the dominant reaction mechanism between MOF-NVZI and Cd is adsorption with complexation, and the stabilization of Cd is achieved by the formation of compounds such as FeOCdOH.
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Affiliation(s)
- Zixuan Chen
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, China
| | - Zhengchao Zhang
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, China
| | - Peng Wang
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, China
| | - Tingyi Liu
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin, China
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Martinis EM, Denardin JC, Calderón R, Flores C, Manquián-Cerda K, Maldonado T, Arancibia-Miranda N. Enhanced removal of mercury and lead by a novel and efficient surface-functionalized imogolite with nanoscale zero-valent iron material. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:20221-20233. [PMID: 34725756 DOI: 10.1007/s11356-021-17242-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
A novel hybrid nanomaterial, nanoscale zero-valent iron (nZVI)-grafted imogolite nanotubes (Imo), was synthesized via a fast and straightforward chemical procedure. The as-obtained nanomaterial (Imo-nZVI) was characterized using transmission electron microscopy (TEM), electrophoretic mobility (EM), and vibrating sample magnetometry (VSM). The prepared Imo-nZVI was superparamagnetic at room temperature and could be easily separated by an external magnetic field. Sorption batch experiments were performed for single- and multicomponent systems and demonstrated that Hg2+ and Pb2+ could be quantitatively adsorbed at pH 3.0. For multicomponent systems, maximum adsorption capacities of 61.6 mg·g-1 and 76.9 mg·g-1 were obtained for Hg2+ and Pb2+ respectively. It was observed that the functional groups in Imo-nZVI interact preferentially with analytes according to the Misono softness parameter. The higher performance of Imo-nZVI compared with Imo and nZVI is related to the increased number of adsorption sites in the functionalized nanomaterial. The sorption equilibrium data obeyed the Langmuir model, while kinetic studies demonstrated that the sorption processes of Hg2+ and Pb2+ followed the pseudo-second-order model. This study suggests that the Imo-nZVI composite can be used as a promising sorbent to provide a simple and fast separation method to remove Hg and Pb ions from contaminated water.
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Affiliation(s)
- Estefanía M Martinis
- Facultad de Ingeniería, Universidad Nacional de Cuyo, Consejo Nacional de Investigaciones Científicas y Técnicas, UNCUYO-CONICET, Mendoza, Argentina.
| | - Juliano C Denardin
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Chile
| | - Raul Calderón
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Fabrica, 1990, Segundo Piso, Santiago, Chile
- Instituto de Investigaciones Agropecuarias, INIA La Platina, Santa Rosa, 11610, Santiago, Chile
| | - Cristóbal Flores
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Karen Manquián-Cerda
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Tamara Maldonado
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Nicolás Arancibia-Miranda
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Chile.
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
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MFO@NZVI/hydrogel for sulfasalazine degradation: Performance, mechanism and degradation pathway. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Comparison of Paraquat Herbicide Removal from Aqueous Solutions using Nanoscale Zero-Valent Iron-Pumice/Diatomite Composites. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1155/2021/4319660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Paraquat is the most important herbicide of the bipyridyl group. The aim of the present study was to compare the removal of paraquat herbicide from aqueous solutions using nanoscale zero-valent iron-pumice/diatomite composites. In this study, nZVI was supported with diatomite and pumice. Scanning electron microscopy (SEM) analysis, X-ray diffraction spectroscopy (XRD), Fourier transform infrared spectrometry (FTIR), and specific surface area tests (BET) were used to evaluate the properties of nanoadsorbents. The residual concentration of paraquat in aqueous solution was detected by high-performance liquid chromatography (HPLC). Then, the effects of different variables including the pollutant concentration, contact time, temperature, adsorbents (D-nZVI and P-nZVI) dose, and pH, were investigated in a lab scale batch system. The results showed that the optimal pH for both processes was 3.74. In optimal conditions, the efficiencies of D-nZVI and P-nZVI were 92.76% and 85.28%, respectively. In addition, isotherm and adsorption kinetics studies indicated that P-nZVI follows the Langmuir and Freundlich isotherm models, and D-nZVI follows the Langmuir isotherm model, and both processes follow pseudo-second-order kinetics. The results indicated that the synthesized nanoparticles were suitable for removing paraquat from aqueous solutions. Both adsorbents were found to be very effective in removing similar compounds at ambient temperature in a short time.
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Zhang H, Su X, Sun B, Xu Y, Gong J. Citrate iron complex induced dramatically enhanced oxidation of atrazine with bimetallic Bi/Fe 0: Reactivity, oxidation and mechanism. CHEMOSPHERE 2021; 282:131100. [PMID: 34119736 DOI: 10.1016/j.chemosphere.2021.131100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/12/2021] [Accepted: 05/31/2021] [Indexed: 06/12/2023]
Abstract
The oxidative degradation of atrazine (ATR) using bimetallic Bi/Fe0 nanoparticles cooperated with citric acid (CA) and sodium citrate (NaCA) without extra addition of H2O2 or another oxidant was conducted. Almost 73% of ATR was removed in Bi/Fe0+NaCA + CA buffer system in 3 h, and the bimetallic Bi/Fe0 performs high stability and long service life in the buffer system according to the results of cyclic degradation experiments. The citrate iron complex of Fe(II)[Cit]- played the key role for the degradation process since it could quickly react with the generated H2O2 to produce free radicals in the Bi/Fe0+NaCA + CA system, which broadened the applicable pH range of the traditional Fenton reaction and promoted the oxidative degradation process of ATR. The possible degradation pathways of ATR were also investigated. In the Bi/Fe0+NaCA + CA buffer system, twelve kinds of ATR intermediate products were detected, of which the main products were dechlorination products and alkyl oxidative products. Due to the pH controllable of the Bi/Fe0+NaCA + CA system, it could reduce the acidity impact on the environment and makes the additional impact on the environment lower. Therefore, this work provides a new strategy for the degradation of ATR.
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Affiliation(s)
- Huimin Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaoming Su
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Benjian Sun
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yake Xu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jianyu Gong
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
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Rastghalam ZS, Cheng T, Freake B. Fine particle attachment to quartz sand in the presence of multiple interacting dissolved components. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 645:499-508. [PMID: 30029125 DOI: 10.1016/j.scitotenv.2018.07.131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 07/04/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
In natural aquatic systems water chemistry is complicated and fine particles encounter multiple water components simultaneously, yet the combined effects of some multiple components on the fate and transport of these particles have not been elucidated. In this study nTiO2 and illite colloid attachment to quartz sand was investigated in 1 mM NaCl and 0.5 mM CaCl2 background solutions using a range of phosphate concentrations (0 to 10 mg/L) at pH 5 and 9. The results obtained from the batch experiments indicated that without using phosphate, nTiO2 aggregation and attachment was strongly influenced by pH and Ca2+, both of which modified nTiO2 surface charges. nTiO2 attachment was high in CaCl2 solution at pH 9 due to attractive forces between nTiO2 and sand, as well as ripening. Furthermore, phosphate adsorption to nTiO2 was higher in CaCl2 solution at pH 9 than that at pH 5 due to attractive forces between nTiO2 and phosphate anions, and also potential surface precipitation of Ca-P minerals at pH 9. Phosphate adsorption to illite was low owing to strong repulsive forces between illite and phosphate. The effect of phosphate on nTiO2 and illite attachment to sand was influenced by pH and cation valency. A decreasing trend in nTiO2 attachment with phosphate addition was observed in NaCl solution at pH 5 and 9, and in CaCl2 solution at pH 5; however, in CaCl2 solution at pH 9, the surface charge of nTiO2 reversed from negative to positive and a substantial amount of nTiO2 attached to sand. Moreover, illite attachment to sand was much lower than that of nTiO2 under all the conditions tested in this study. These findings are important for understanding of the fate and transport of nTiO2 and illite colloids in natural aquatic systems where various anions and cations co-exist.
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Affiliation(s)
- Zahra Sadat Rastghalam
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Tao Cheng
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada.
| | - Bradley Freake
- Department of Earth Sciences, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador A1B 3X5, Canada
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Ho SH, Zhu S, Chang JS. Recent advances in nanoscale-metal assisted biochar derived from waste biomass used for heavy metals removal. BIORESOURCE TECHNOLOGY 2017; 246:123-134. [PMID: 28893502 DOI: 10.1016/j.biortech.2017.08.061] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/22/2017] [Accepted: 08/10/2017] [Indexed: 06/07/2023]
Abstract
Pollution of heavy metals (HMs) is a detrimental treat to human health and need to be cleaned up in a proper way. Biochar (BC), a low-cost and "green" adsorbent, has attracted significant attention due to its considerable HMs removal capacity. In particular, nano-metals have recently been used to assist BC in improving its reactivity, surface texture and magnetism. Synthesis methods and metal precursors greatly influence the properties and structures of the nanocomposites, thereby affecting their HMs removal performance. This review presents advances in synthesis methods, formation mechanisms and surface characteristics of BC nanocomposites, along with the discussions on HMs removal mechanisms and the effects of environmental factors on HMs removal efficiency. Performance of using BC nanocomposites to remediate real HMs-containing wastewater and issues associated with its process scale-up are also discussed. This review aims to provide useful information to facilitate the development of HMs removal by nanoscale-metal assisted BC.
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Affiliation(s)
- Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Shishu Zhu
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China
| | - Jo-Shu Chang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
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Ren J, Tijing LD, Shon HK. “Robbing behavior” and re-immobilization of nanoscale zero-valent iron (nZVI) onto electrospun polymeric nanofiber mats for trichloroethylene (TCE) remediation. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Cao Z, Liu X, Xu J, Zhang J, Yang Y, Zhou J, Xu X, Lowry GV. Removal of Antibiotic Florfenicol by Sulfide-Modified Nanoscale Zero-Valent Iron. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:11269-11277. [PMID: 28902992 DOI: 10.1021/acs.est.7b02480] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Florfenicol (FF, C12H14Cl2FNO4S), an emerging halogenated organic contaminant of concern was effectively degraded in water by sulfidized nanoscale zerovalent iron (S-nZVI). Sulfidized nZVI (62.5 m2 g-1) that was prepared using a one-step method resulted in small Fe0/Fe-sulfide particles that were more stable against aggregation than unsulfidized nZVI (10.2 m2 g-1). No obvious removal of FF was observed by unsulfidized nZVI. S-nZVI degraded FF, having a surface area normalized reaction rate constant of 3.1 × 10-4 L m-2 min-1. The effects of the S/Fe molar ratio, initial FF concentration, initial pH, temperature, and water composition on the removal of FF by S-nZVI, and on the formation of reaction products, were systematically investigated. Both dechlorination and defluorination were observed, resulting in four degradation products (C12H15ClFNO4S, C12H16FNO4S, C12H17NO4S, and C12H17NO5S). High removal efficiencies of FF by S-nZVI were achieved in groundwater, river water, seawater, and wastewater. The reactivity of S-nZVI was relatively unaffected by the presence of both dissolved ions and organic matter in the waters tested.
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Affiliation(s)
- Zhen Cao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Xue Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Jiang Xu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
- Department of Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh 15213, United States
| | - Jing Zhang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Yi Yang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Junliang Zhou
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Xinhua Xu
- Department of Environmental Engineering, Zhejiang University , Hangzhou, Zhejiang 310058, China
| | - Gregory V Lowry
- Department of Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh 15213, United States
- Center for Environmental Implications of Nanotechnology (CEINT), Pittsburgh, Pennsylvania 15213, United States
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Lu H, Wang J, Hao H, Wang T. Magnetically Separable MoS₂/Fe₃O₄/nZVI Nanocomposites for the Treatment of Wastewater Containing Cr(VI) and 4-Chlorophenol. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E303. [PMID: 28973986 PMCID: PMC5666468 DOI: 10.3390/nano7100303] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 09/21/2017] [Accepted: 09/25/2017] [Indexed: 12/23/2022]
Abstract
With a large specific surface area, high reactivity, and excellent adsorption properties, nano zerovalent iron (nZVI) can degrade a wide variety of contaminants in wastewater. However, aggregation, oxidation, and separation issues greatly impede its wide application. In this study, MoS₂/Fe₃O₄/nZVI nanocomposites were successfully synthesized by a facile step-by-step approach to overcome these problems. MoS₂ nanosheets (MNs) acted as an efficient support for nZVI and enriched the organic pollutants nearby, leading to an enhanced removal efficiency. Fe₃O₄ nanoparticles (NPs) could not only suppress the agglomeration and restacking of MNs, but also facilitate easy separation and recovery of the nanocomposites. The synergistic effect between MNs and Fe₃O₄ NPs effectively enhanced the reactivity and efficiency of nZVI. In the system, Cr(VI) was reduced to Cr(III) by nZVI in the nanocomposites, and Fe2+ produced in the process was combined with H₂O₂ to further remove 4-Chlorophenol (4-CP) through a Fenton reaction. Furthermore, the nanocomposites could be easily separated from wastewater by a magnet and be reused for at least five consecutive runs, revealing good reusability. The results demonstrate that the novel nanocomposites are highly efficient and promising for the simultaneous removal of Cr(VI) and 4-CP in wastewater.
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Affiliation(s)
- Haijiao Lu
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
| | - Jingkang Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
| | - Hongxun Hao
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
| | - Ting Wang
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
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Chen A, Shang C, Shao J, Zhang J, Huang H. The application of iron-based technologies in uranium remediation: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:1291-1306. [PMID: 27720254 DOI: 10.1016/j.scitotenv.2016.09.211] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/25/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
Remediating uranium contamination is of worldwide interest because of the increasing release of uranium from mining and processing, nuclear power leaks, depleted uranium components in weapons production and disposal, and phosphate fertilizer in agriculture activities. Iron-based technologies are attractive because they are highly efficient, inexpensive, and readily available. This paper provides an overview of the current literature that addresses the application of iron-based technologies in the remediation of sites with elevated uranium levels. The application of iron-based materials, the current remediation technologies and mechanisms, and the effectiveness and environmental safety considerations of these approaches were discussed. Because uranium can be reduced and reoxidized in the environment, the review also proposes strategies for long-term in situ remediation of uranium. Unfortunately, iron-based materials (nanoscale zerovalent iron and iron oxides) can be toxic to microorganisms. As such, further studies exploring the links among the fates, ecological impacts, and other environmentally relevant factors are needed to better understand the constraints on using iron-based technologies for remediation.
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Affiliation(s)
- Anwei Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Cui Shang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Jihai Shao
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China.
| | - Jiachao Zhang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
| | - Hongli Huang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China
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Huang D, Xue W, Zeng G, Wan J, Chen G, Huang C, Zhang C, Cheng M, Xu P. Immobilization of Cd in river sediments by sodium alginate modified nanoscale zero-valent iron: Impact on enzyme activities and microbial community diversity. WATER RESEARCH 2016; 106:15-25. [PMID: 27693995 DOI: 10.1016/j.watres.2016.09.050] [Citation(s) in RCA: 173] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Revised: 09/21/2016] [Accepted: 09/24/2016] [Indexed: 06/06/2023]
Abstract
This paper investigated how sodium alginate (SA)-modified nanoscale zero-valent iron (NZVI), play a constructive role in the remediation of cadmium (Cd) contaminated river sediments. The changes of the fraction of Cd, enzyme activities (urease, catalase, dehydrogenase) and bacterial community structures with the treatment by SNZVI were observed. The sequential extraction experiments demonstrated that most mobile fractions of Cd were transformed into residues (the maximum residual percentage of Cd increases from 15.49% to 57.28% after 30 days of incubation at 0.1 wt% SA), with the decrease of bioavailability of Cd. Exclusive of dehydrogenase, the activities of the other two enzymes tested were enhanced with the increase of incubation time, which indicated that dehydrogenase might be inhibited by ferric ions formed from SNZVI whereas no obvious inhibition was found for other enzymes. Polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) analyses were used for the detection of microbial community changes, and the results showed that SNZVI and NZVI could increase bacterial taxa and improve bacterial abundance. All the experimental findings of this study provide new insights into the potential consequences of SNZVI treatments on the metal Cd immobilization in contaminated river sediments.
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Affiliation(s)
- Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China.
| | - Wenjing Xue
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China.
| | - Jia Wan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Guomin Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Chao Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Chen Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Min Cheng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
| | - Piao Xu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Hunan University, Changsha, 410082, PR China
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Zou Y, Wang X, Khan A, Wang P, Liu Y, Alsaedi A, Hayat T, Wang X. Environmental Remediation and Application of Nanoscale Zero-Valent Iron and Its Composites for the Removal of Heavy Metal Ions: A Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:7290-304. [PMID: 27331413 DOI: 10.1021/acs.est.6b01897] [Citation(s) in RCA: 582] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The presence of heavy metals in the industrial effluents has recently been a challenging issue for human health. Efficient removal of heavy metal ions from environment is one of the most important issues from biological and environmental point of view, and many studies have been devoted to investigate the environmental behavior of nanoscale zerovalent iron (NZVI) for the removal of toxic heavy metal ions, present both in the surface and underground wastewater. The aim of this review is to show the excellent removal capacity and environmental remediation of NZVI-based materials for various heavy metal ions. A new look on NZVI-based materials (e.g., modified or matrix-supported NZVI materials) and possible interaction mechanism (e.g., adsorption, reduction and oxidation) and the latest environmental application. The effects of various environmental conditions (e.g., pH, temperature, coexisting oxy-anions and cations) and potential problems for the removal of heavy metal ions on NZVI-based materials with the DFT theoretical calculations and EXAFS technology are discussed. Research shows that NZVI-based materials have satisfactory removal capacities for heavy metal ions and play an important role in the environmental pollution cleanup. Possible improvement of NZVI-based materials and potential areas for future applications in environment remediation are also proposed.
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Affiliation(s)
- Yidong Zou
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- School of Chemistry, Biological and Materials Sciences, East China Institute of Technology , Nanchang, 330013, P. R. China
| | - Xiangxue Wang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Jiangsu, P.R. China
| | - Ayub Khan
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
| | - Pengyi Wang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
| | - Yunhai Liu
- School of Chemistry, Biological and Materials Sciences, East China Institute of Technology , Nanchang, 330013, P. R. China
| | - Ahmed Alsaedi
- NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
| | - Tasawar Hayat
- NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
- Department of Mathematics, Quaid-I-Azam University , Islamabad 44000, Pakistan
| | - Xiangke Wang
- School of Environment and Chemical Engineering, North China Electric Power University , Beijing 102206, P. R. China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Jiangsu, P.R. China
- NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
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15
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Ratnayake S, Schild D, Maczka E, Jartych E, Luetzenkirchen J, Kosmulski M, Makehelwala M, Weragoda SK, Bandara A, Wijayawardana R, Chandrajith R, Indrarathne SP, Weerasooriya R. A novel radiation-induced grafting methodology to synthesize stable zerovalent iron nanoparticles at ambient atmospheric conditions. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3894-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Zou Y, Wang X, Khan A, Wang P, Liu Y, Alsaedi A, Hayat T, Wang X. Environmental Remediation and Application of Nanoscale Zero-Valent Iron and Its Composites for the Removal of Heavy Metal Ions: A Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:7290-7304. [DOI: https:/doi.org/10.1021/acs.est.6b01897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Affiliation(s)
- Yidong Zou
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- School
of Chemistry, Biological and Materials Sciences, East China Institute of Technology, Nanchang, 330013, P. R. China
| | - Xiangxue Wang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- Collaborative Innovation
Center of Radiation Medicine of Jiangsu Higher Education Institutions Jiangsu, P.R. China
| | - Ayub Khan
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
| | - Pengyi Wang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
| | - Yunhai Liu
- School
of Chemistry, Biological and Materials Sciences, East China Institute of Technology, Nanchang, 330013, P. R. China
| | - Ahmed Alsaedi
- NAAM
Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Tasawar Hayat
- NAAM
Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department
of Mathematics, Quaid-I-Azam University, Islamabad 44000, Pakistan
| | - Xiangke Wang
- School
of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China
- Collaborative Innovation
Center of Radiation Medicine of Jiangsu Higher Education Institutions Jiangsu, P.R. China
- NAAM
Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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17
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Lu HJ, Wang JK, Ferguson S, Wang T, Bao Y, Hao HX. Mechanism, synthesis and modification of nano zerovalent iron in water treatment. NANOSCALE 2016; 8:9962-9975. [PMID: 27128356 DOI: 10.1039/c6nr00740f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Owing to its strong reducing ability, high reaction activity, excellent adsorption properties, good mobility and relatively low cost, nano zerovalent iron (nZVI) is an extremely promising nanomaterial for use in water treatment. In this paper, the working mechanisms of nZVI in the degradation of various contaminants in water are outlined and discussed. Synthesis methods and their respective advantages and disadvantages are discussed in detail. Furthermore, a variety of modification methods which have been developed to improve the mobility and stability of nZVI as well as to facilitate the separation of nZVI from degraded systems are also summarized and discussed. Numerous studies indicate that nZVI has considerable potential to become an efficient, versatile and practical approach for large-scale water treatment.
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Affiliation(s)
- Hai-Jiao Lu
- National Engineering Research Center of Industry Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
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18
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Wang J, Liu G, Qi C, Zhou C. Synthesis and Characterization of Montmorillonite-Supported Zero-Valent Iron Nanoparticles with Application for Preconcentration of Zinc. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1159219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Sheng G, Hu J, Li H, Li J, Huang Y. Enhanced sequestration of Cr(VI) by nanoscale zero-valent iron supported on layered double hydroxide by batch and XAFS study. CHEMOSPHERE 2016; 148:227-232. [PMID: 26807943 DOI: 10.1016/j.chemosphere.2016.01.035] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/14/2015] [Accepted: 01/09/2016] [Indexed: 06/05/2023]
Abstract
Herein, the reduction of nanoscale zero-valent iron (NZVI) and adsorption of layered double hydroxides (LDH) to sequester Cr(VI) were well combined by the immobilization of NZVI onto LDH surface (NZVI/LDH). The characterization results revealed that LDH decreased NZVI aggregation and thus increased Cr(VI) sequestration. The batch results indicated that Cr(VI) sequestration by NZVI/LDH was higher than that of NZVI, and superior to the sum of reduction and adsorption. The LDH with good anion exchange property allowed the adsorption of Cr(VI), facilitating interfacial reaction by increasing the local concentration of Cr(VI) in the NZVI vicinity. X-ray absorption near edge structure (XANES) results indicated that Cr(VI) was almost completely reduced to Cr(III) by NZVI/LDH, but Cr(VI) was partly reduced to Cr(III) by NZVI with a trace of Cr(VI) adsorbed on corrosion products. The coordination environment of Cr from extended X-ray absorption fine structure (EXAFS) analysis revealed that LDH could be a good scavenger for the insoluble products produced during reaction. So, the insoluble products on NZVI could be reduced, and its reactivity could be maintained. These results demonstrated that NZVI/LDH exhibits multiple functionalities relevant to the remediation of Cr(VI)-contaminated sites.
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Affiliation(s)
- Guodong Sheng
- College of Chemistry and Chemical Engineering, College of Medical Science, Shaoxing University, Zhejiang 312000, PR China; Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China.
| | - Jun Hu
- School of Electronic Engineering, Dongguan University of Technology, Guangdong 523808, PR China
| | - Hui Li
- College of Chemistry and Chemical Engineering, College of Medical Science, Shaoxing University, Zhejiang 312000, PR China
| | - Jiaxing Li
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China
| | - Yuying Huang
- Shanghai Synchrotron Radiation Facility (SSRF), Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, PR China
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20
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Xu J, Liu X, Lowry GV, Cao Z, Zhao H, Zhou JL, Xu X. Dechlorination Mechanism of 2,4-Dichlorophenol by Magnetic MWCNTs Supported Pd/Fe Nanohybrids: Rapid Adsorption, Gradual Dechlorination, and Desorption of Phenol. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7333-7342. [PMID: 26938876 DOI: 10.1021/acsami.5b11859] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
2,4-dichlorophenol was effectively removed from water using magnetic Pd/Fe nanoparticles supported on multiwalled carbon nanotubes (MWCNTs). The adsorption kinetics, isotherms, and energy for 2,4-dichlorophenol and its partially (4-chlorophenol, 2-chlorophenol) and completely (phenol) dechlorinated products are presented and discussed. The adsorption capacity was 2,4-dichlorophenol > 4-chlorophenol > 2-chlorophenol > phenol for MWCNTs. MWCNTs-Fe3O4-Pd/Fe nanohybrids provided rapid adsorption, gradual dechlorination, and final desorption of phenol, which is attractive as a remediation technology. Over 82.7% of the phenol was desorbed and released to the aqueous phase after 72 h due to its low adsorption capacity, leaving the majority of active sites available on the surface of MWCNTs-Fe3O4-Pd/Fe. The nanohybrids maintained high activity in five consecutive in situ experiments, and they were retrievable using magnetic separation. MWCNTs-Fe3O4-Pd/Fe nanohybrids outperform unsupported Pd/Fe nanoparticles, which were difficult to retrieve, and were easily passivated and aggregated.
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Affiliation(s)
- Jiang Xu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Xue Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Gregory Victor Lowry
- Department of Civil and Environmental Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
- Center for Environmental Implications of Nanotechnology, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Zhen Cao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - Heng Zhao
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University , Shanghai 200062, China
| | - John L Zhou
- School of Civil and Environmental Engineering, University of Technology Sydney , Ultimo, NSW 2007, Australia
| | - Xinhua Xu
- Department of Environmental Engineering, Zhejiang University , Hangzhou 310058, China
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21
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Laaz I, Stébé MJ, Benhamou A, Zoubir D, Blin JL. Influence of porosity and surface modification on the adsorption of both cationic and anionic dyes. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Arancibia-Miranda N, Baltazar SE, García A, Muñoz-Lira D, Sepúlveda P, Rubio MA, Altbir D. Nanoscale zero valent supported by Zeolite and Montmorillonite: Template effect of the removal of lead ion from an aqueous solution. JOURNAL OF HAZARDOUS MATERIALS 2016; 301:371-380. [PMID: 26384998 DOI: 10.1016/j.jhazmat.2015.09.007] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 08/10/2015] [Accepted: 09/02/2015] [Indexed: 06/05/2023]
Abstract
In this work, we have studied the Pb(2+) sorption capacity of Zeolite (Z) and Montmorillonite (Mt) functionalized with nanoscale zero-valent iron (nZVI), at 50% w/w, obtained by means of an impregnating process with a solvent excess. The composites were characterized by several techniques including X-ray diffraction; scanning electron microscopy (SEM); BET area; isoelectric point (IEP); and, finally a magnetic response. Comparatively significant differences in terms of electrophoretic and magnetic characteristics were found between the pristine materials and the composites. Both structures show a high efficiency and velocity in the removal of Pb(2+) up to 99.0% (200.0 ppm) after 40 min of reaction time. The removal kinetics of Pb(2+) is adequately described by the pseudo second-order kinetic model, and the maximum adsorbed amounts (q(e)) of this analyte are in close accordance with the experimental results. The intraparticle diffusion model shows that this is not the only rate-limiting step, this being the Langmuir model which was well adjusted to our experimental data. Therefore, maximum sorption capacities were found to be 115.1±11.0, 105.5±9.0, 68.3±1.3, 54.2±1.3, and 50.3±4.2 mg g(-1), for Mt-nZVI, Z-nZVI, Zeolite, Mt, and nZVI, respectively. The higher sorption capacities can be attributed to the synergetic behavior between the clay and iron nanoparticles, as a consequence of the clay coating process with nZVI. These results suggest that both composites could be used as an efficient adsorbent for the removal of lead from contaminated water sources.
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Affiliation(s)
- Nicolás Arancibia-Miranda
- Facultad de Química y Biología, CEDENNA, Universidad de Santiago de Chile, USACH, Casilla 40, Santiago C.P. 33, Chile.
| | - Samuel E Baltazar
- Departamento de Física, CEDENNA, Universidad de Santiago de Chile, USACH, Av. Ecuador 3493, Santiago 9170124, Chile
| | - Alejandra García
- CIMAV, S.C. Alianza Norte 202, Carretera Monterrey-Aeropuerto Km 10, C.P. 66600, Apodaca Nuevo León, Mexico; University of Texas at San Antonio, Physics and Astronomy Department, One UTSA circle 78249, San Antonio, Texas, USA
| | - Daniela Muñoz-Lira
- Facultad de Química y Biología, CEDENNA, Universidad de Santiago de Chile, USACH, Casilla 40, Santiago C.P. 33, Chile; Facultad de Ciencias, Universidad de Chile, UCH, Las Palmeras 3425, Santiago 7800024, Chile
| | - Pamela Sepúlveda
- Facultad de Química y Biología, CEDENNA, Universidad de Santiago de Chile, USACH, Casilla 40, Santiago C.P. 33, Chile
| | - María A Rubio
- Facultad de Química y Biología, CEDENNA, Universidad de Santiago de Chile, USACH, Casilla 40, Santiago C.P. 33, Chile
| | - Dora Altbir
- Departamento de Física, CEDENNA, Universidad de Santiago de Chile, USACH, Av. Ecuador 3493, Santiago 9170124, Chile
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23
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Zha Y, Zhou Z, He H, Wang T, Luo L. Nanoscale zero-valent iron incorporated with nanomagnetic diatomite for catalytic degradation of methylene blue in heterogeneous Fenton system. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:2815-2823. [PMID: 27232419 DOI: 10.2166/wst.2016.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nanoscale zero-valent iron (nZVI) incorporated with nanomagnetic diatomite (DE) composite material was prepared for catalytic degradation of methylene blue (MB) in heterogeneous Fenton system. The material was constructed by two facile steps: Fe3O4 magnetic nanoparticles were supported on DE by chemical co-precipitation method, after which nZVI was incorporated into magnetic DE by liquid-phase chemical reduction strategy. The as-prepared catalyst was characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, magnetic properties measurement and nitrogen adsorption-desorption isotherm measurement. The novel nZVI@Fe3O4-diatomite nanocomposites showed a distinct catalytic activity and a desirable effect for degradation of MB. MB could be completely decolorized within 8 min and the removal efficiency of total organic carbon could reach to 90% after reaction for 1 h.
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Affiliation(s)
- Yiming Zha
- Department of Chemistry, Shanghai University, Shanghai 200444, China E-mail:
| | - Ziqing Zhou
- Department of Chemistry, Shanghai University, Shanghai 200444, China E-mail:
| | - Haibo He
- Department of Chemistry, Shanghai University, Shanghai 200444, China E-mail:
| | - Tianlin Wang
- Department of Chemistry, Shanghai University, Shanghai 200444, China E-mail:
| | - Liqiang Luo
- Department of Chemistry, Shanghai University, Shanghai 200444, China E-mail: ; Department of Physics, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China
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24
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Colombo A, Dragonetti C, Magni M, Roberto D. Degradation of toxic halogenated organic compounds by iron-containing mono-, bi- and tri-metallic particles in water. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Kozell A, Yecheskel Y, Balaban N, Dror I, Halicz L, Ronen Z, Gelman F. Application of dual carbon-bromine isotope analysis for investigating abiotic transformations of tribromoneopentyl alcohol (TBNPA). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:4433-4440. [PMID: 25723316 DOI: 10.1021/es504887d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Many of polybrominated organic compounds, used as flame retardant additives, belong to the group of persistent organic pollutants. Compound-specific isotope analysis is one of the potential analytical tools for investigating their fate in the environment. However, the isotope effects associated with transformations of brominated organic compounds are still poorly explored. In the present study, we investigated carbon and bromine isotope fractionation during degradation of tribromoneopentyl alcohol (TBNPA), one of the widely used flame retardant additives, in three different chemical processes: transformation in aqueous alkaline solution (pH 8); reductive dehalogenation by zero-valent iron nanoparticles (nZVI) in anoxic conditions; oxidative degradation by H2O2 in the presence of CuO nanoparticles (nCuO). Two-dimensional carbon-bromine isotope plots (δ(13)C/Δ(81)Br) for each reaction gave different process-dependent isotope slopes (Λ(C/Br)): 25.2 ± 2.5 for alkaline hydrolysis (pH 8); 3.8 ± 0.5 for debromination in the presence of nZVI in anoxic conditions; ∞ in the case of catalytic oxidation by H2O2 with nCuO. The obtained isotope effects for both elements were generally in agreement with the values expected for the suggested reaction mechanisms. The results of the present study support further applications of dual carbon-bromine isotope analysis as a tool for identification of reaction pathway during transformations of brominated organic compounds in the environment.
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Affiliation(s)
- Anna Kozell
- †Geological Survey of Israel, 30 Malhei Israel Street, Jerusalem 95501, Israel
- ‡Department of Chemistry, The Hebrew University, Jerusalem 91904, Israel
| | - Yinon Yecheskel
- §Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Noa Balaban
- ∥Zuckerberg Institute for Water Research, Department of Environmental Hydrology and Microbiology, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Sede Boqer 84990, Israel
| | - Ishai Dror
- §Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ludwik Halicz
- †Geological Survey of Israel, 30 Malhei Israel Street, Jerusalem 95501, Israel
- ⊥Biological and Chemical Research Centre, University of Warsaw, 02-089, Poland
| | - Zeev Ronen
- ∥Zuckerberg Institute for Water Research, Department of Environmental Hydrology and Microbiology, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Sede Boqer 84990, Israel
| | - Faina Gelman
- †Geological Survey of Israel, 30 Malhei Israel Street, Jerusalem 95501, Israel
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26
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Sharma AK, Kumar R, Mittal S, Hussain S, Arora M, Sharma RC, Babu JN. In situ reductive regeneration of zerovalent iron nanoparticles immobilized on cellulose for atom efficient Cr(vi) adsorption. RSC Adv 2015. [DOI: 10.1039/c5ra19917d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
nZVI (11.8 ± 0.2% w/w) immobilized on microcrystalline cellulose (C-nZVI) shows unusual Cr(vi) adsorption (562.8 mg g−1 of nZVI) as a consequence of in situ regeneration of nZVI upon oxidation of cellulose to cellulose dialdehyde.
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Affiliation(s)
- Archana Kumari Sharma
- Centre for Environmental Science & Technology
- School of Environment and Earth Sciences
- Central University of Punjab
- Bathinda-151 001
- India
| | - Rabindra Kumar
- Centre for Environmental Science & Technology
- School of Environment and Earth Sciences
- Central University of Punjab
- Bathinda-151 001
- India
| | - Sunil Mittal
- Centre for Environmental Science & Technology
- School of Environment and Earth Sciences
- Central University of Punjab
- Bathinda-151 001
- India
| | - Shamima Hussain
- UGC-DAE Consortium for Scientific Research
- Kokilamedu-603 104
- India
| | - Meenu Arora
- Department of Chemistry
- Multani Mal Modi College
- Patiala
- India
| | - Ramesh Chand Sharma
- Centre for Environmental Science & Technology
- School of Environment and Earth Sciences
- Central University of Punjab
- Bathinda-151 001
- India
| | - J. Nagendra Babu
- Centre for Chemical Sciences
- School of Basic and Applied Sciences
- Central University of Punjab
- Bathinda-151 001
- India
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27
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Datta KKR, Petala E, Datta KJ, Perman JA, Tucek J, Bartak P, Otyepka M, Zoppellaro G, Zboril R. NZVI modified magnetic filter paper with high redox and catalytic activities for advanced water treatment technologies. Chem Commun (Camb) 2014; 50:15673-6. [DOI: 10.1039/c4cc06241h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Yang J, Wang X, Zhu M, Liu H, Ma J. Investigation of PAA/PVDF-NZVI hybrids for metronidazole removal: synthesis, characterization, and reactivity characteristics. JOURNAL OF HAZARDOUS MATERIALS 2014; 264:269-277. [PMID: 24316246 DOI: 10.1016/j.jhazmat.2013.11.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 11/14/2013] [Accepted: 11/17/2013] [Indexed: 06/02/2023]
Abstract
For the first time, the removal process of metronidazole (MNZ) from aqueous solutions over nano zerovalent iron (NZVI) encapsulated within poly(acrylic acid) (PAA)/poly(vinylidene fluoride) (PVDF) membranes was reported. The resultant composite (PPN) demonstrated high reactivity, excellent stability and reusability over the reaction course. Such excellent performance might be attributed to the presence of the charged carboxyl groups in PVDF membrane support, which could enhance NZVI dispersion and improve its longevity. Results showed that a lower initial concentration and higher reaction temperature facilitated the removal of MNZ by PPN, and that the acidic and neutral conditions generally exhibited more favorable effect on MNZ removal than the alkaline ones. Kinetics of the MNZ removal by PPN was found to follow a two-parameter pseudo-first-order decay model well, and the activation energy of the MNZ degradation by PPN was determined to be 30.49kJ/mol. The presence of chloride ions slightly enhanced the reactivity of PPN with MNZ, whereas sulfate ions inhibited its reactivity. In addition, MNZ degradation pathways by PPN were proposed based on the identified intermediates. This study suggests that PPN composite possessing excellent performance may be a promising functional material to pretreat antibiotic wastewaters.
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Affiliation(s)
- Jiacheng Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| | - Minping Zhu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Huiling Liu
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Jun Ma
- School of Municipal and Environmental Engineering, State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin 150090, PR China
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29
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Sun Z, Zheng S, Ayoko GA, Frost RL, Xi Y. Degradation of simazine from aqueous solutions by diatomite-supported nanosized zero-valent iron composite materials. JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 2:768-77. [PMID: 24231330 DOI: 10.1016/j.jhazmat.2013.10.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 10/21/2013] [Accepted: 10/22/2013] [Indexed: 05/24/2023]
Abstract
A novel composite material based on deposition of nanosized zero-valent iron (nZVI) particles on acid-leached diatomite was synthesised for the removal of a chlorinated contaminant in water. The nZVI/diatomite composites were characterised by X-ray diffraction, scanning electron microscopy, elemental analysis, transmission electron microscopy and X-ray photoelectron spectroscopy. Compared with the pure nZVI particles, better dispersion of nZVI particles on the surface or inside the pores of diatom shells was observed. The herbicide simazine was selected as the model chlorinated contaminant and the removal efficiency by nZVI/diatomite composite was compared with that of the pristine nZVI and commercial iron powder. It was found that the diatomite supported nZVI composite material prepared by centrifugation exhibits relatively better efficient activity in decomposition of simazine than commercial Fe, lab synthesised nZVI and composite material prepared via rotary evaporation, and the optimum experimental conditions were obtained based on a series of batch experiments. This study on immobilising nZVI particles onto diatomite opens a new avenue for the practical application of nZVI and the diatomite-supported nanosized zero-valent iron composite materials have potential applications in environmental remediation.
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Affiliation(s)
- Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining & Technology, Beijing 100083, PR China; Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, Queensland 4001, Australia
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30
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Li Y, Ma H, Ren B, Li T. Simultaneous Adsorption and Degradation of Cr(VI) and Cd(II) Ions from Aqueous Solution by Silica-Coated Fe (0) Nanoparticles. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2013; 2013:649503. [PMID: 24455425 PMCID: PMC3876921 DOI: 10.1155/2013/649503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 11/22/2013] [Accepted: 11/22/2013] [Indexed: 05/18/2023]
Abstract
Core-shell silica-coated Fe(0) nanoparticles (Fe@SiO2) were prepared in one-step synthesis by aqueous reduction combined with modified Stöber method. The as-prepared Fe@SiO2 were then used for simultaneous removal of Cr(VI) and Cd(II) from aqueous solution. Batch tests indicated that Fe@SiO2 exhibited high removal capacity toward Cr(VI) and Cd(II). Cr(VI) was removed by Fe@SiO2 through reduction rather than adsorption, while Cd(II) removal was mainly through adsorption. The removal rate increased with increasing initial Fe NPs dose and decreased with increasing initial Cr(VI) and Cd(II) concentrations. Cd(II) adsorption was also strengthened by Cr(VI) reduction with the release of OH(-). The removals of Cr(VI) and Cd(II) were weakened in the presence of cations or humic acid, as a result of aggregation and less active site of Fe@SiO2. Overall, the simply prepared Fe@SiO2 were potential material for the heavy metals removed from water.
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Affiliation(s)
- Yongchao Li
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
- *Yongchao Li:
| | - Hongpu Ma
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Bozhi Ren
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Tielong Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
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