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Asimakidou T, Kalaitzidou K, Pinakidou F, Zhou T, Rivera-Gil P, Balcells L, Mitrakas M, Makridis A, Katsikini M, Vourlias G, Chrissafis K, Simeonidis K. Implementing magnetically-active Sn-based nanocomposites in hexavalent chromium removal from drinking water. CHEMOSPHERE 2024; 361:142529. [PMID: 38838862 DOI: 10.1016/j.chemosphere.2024.142529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/22/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Abstract
A novel nanocomposite consisting of Fe3O4-loaded tin oxyhydroxy-chloride is demonstrated as an efficient adsorbent for the removal of hexavalent chromium in compliance to the new drinking water regulation. This study introduces a continuous-flow production of the nanocomposite through the separate synthesis of (i) 40 nm Fe3O4 nanoparticles and (ii) multilayered spherical arrangements of a tin hydroxy-chloride identified as abhurite, before the application of a wet-blending process. The homogeneous distribution of Fe3O4 nanoparticles on the abhurite's morphology, features nanocomposite with magnetic response whereas the 10 % loaded nanocomposite preserves a Cr(VI) uptake capacity of 7.2 mg/g for residual concentrations below 25 μg/L. Kinetic and thermodynamic examination of the uptake evolution indicates a relative rapid Cr(VI) capture dominated by interparticle diffusion and a spontaneous endothermic process mediated by reduction to Cr(III). The efficiency of the optimized nanocomposite was validated in a pilot unit operating in a sequence of a stirring reactor and a rotary magnetic separator showing an alternative and competitive application path than typical fixed-bed filtration, which is supported by the absence of any acute cellular toxicity according to human kidney cell viability tests.
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Affiliation(s)
- Theopoula Asimakidou
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece; Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Kyriaki Kalaitzidou
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Fani Pinakidou
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Ting Zhou
- Integrative Biomedical Materials and Nanomedicine Lab, Universitat Pompeu Fabra, 08003, Barcelona, Spain
| | - Pilar Rivera-Gil
- Integrative Biomedical Materials and Nanomedicine Lab, Universitat Pompeu Fabra, 08003, Barcelona, Spain
| | - Lluis Balcells
- Institut de Ciencia de Materials de Barcelona, CSIC, Campus Universitat Autònoma de Barcelona, A08193 Bellaterra, Spain
| | - Manassis Mitrakas
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Antonios Makridis
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Maria Katsikini
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - George Vourlias
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | | | - Konstantinos Simeonidis
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
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Subsanguan T, Jungcharoen P, Khondee N, Buachan P, Abeyrathne BP, Nuengchamnong N, Pranudta A, Wannapaiboon S, Luepromchai E. Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles. Sci Rep 2023; 13:18603. [PMID: 37903874 PMCID: PMC10616064 DOI: 10.1038/s41598-023-45729-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/23/2023] [Indexed: 11/01/2023] Open
Abstract
Industrial wastewater treatment generates sludge with high concentrations of metals and coagulants, which can cause environmental problems. This study developed a sequential sludge washing and metal recovery process for industrial sludge containing > 4500 mg/kg Cu and > 5000 mg/kg Cr. The washing agent was formulated by mixing glycolipid, lipopeptide, and phospholipid biosurfactants from Weissella cibaria PN3 and Brevibacterium casei NK8 with a chelating agent, ethylenediaminetetraacetic acid (EDTA). These biosurfactants contained various functional groups for capturing metals. The optimized formulation by the central composite design had low surface tension and contained relatively small micelles. Comparable Cu and Cr removal efficiencies of 37.8% and 38.4%, respectively, were obtained after washing the sludge by shaking with a sonication process at a 1:4 solid-to-liquid ratio. The zeta potential analysis indicated the bonding of metal ions on the surface of biosurfactant micelles. When 100 g/L iron oxide nanoparticles were applied to the washing agent without pH adjustment, 83% Cu and 100% Cr were recovered. In addition, X-ray diffraction and X-ray absorption spectroscopy of the nanoparticles showed the oxidation of nanoparticles, the reduction of Cr(V) to the less toxic Cr(III), and the absorption of Cu. The recovered metals could be further recycled, which will be beneficial for the circular economy.
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Affiliation(s)
- Tipsuda Subsanguan
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Phoomipat Jungcharoen
- Department of Environmental Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand
| | - Nichakorn Khondee
- Department of Natural Resources and Environment, Faculty of Agriculture Natural Resources and Environment, Naresuan University, Phitsanulok, Thailand
| | - Pantita Buachan
- International Program in Hazardous Substance and Environmental Management (IP-HSM), Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Buddhika Prabath Abeyrathne
- International Program in Hazardous Substance and Environmental Management (IP-HSM), Graduate School, Chulalongkorn University, Bangkok, Thailand
| | - Nitra Nuengchamnong
- Science Laboratory Centre, Faculty of Science, Naresuan University, Phitsanulok, Thailand
| | - Antika Pranudta
- Synchrotron Light Research Institute, Nakhon Ratchasima, Thailand
| | | | - Ekawan Luepromchai
- Center of Excellence in Microbial Technology for Marine Pollution Treatment (MiTMaPT), Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
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Kanafi MA, Baghdadi M, Mehrdadi N. Detoxification of groundwater contaminated with Cr(VI) using continuous electrochemical cell equipped with copper foam electrode modified with palladium nanoparticles. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1345-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Wang S, Yin W, Bu H, Zeng W, Li P, Zheng X, Chiang P, Wu J. A facile modification of cation exchange resin by nano-sized goethite for enhanced Cr(VI) removal from water. ENVIRONMENTAL TECHNOLOGY 2022; 43:1833-1842. [PMID: 33225859 DOI: 10.1080/09593330.2020.1855257] [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: 05/05/2020] [Accepted: 11/14/2020] [Indexed: 06/11/2023]
Abstract
A novel macroporous strong acidic cation exchange resin (D001) modified by nano-sized goethite (nFeOOH@D001) was fabricated by using a facile ethanol dispersion and impregnation method, and its efficiency for Cr(VI) removal was tested thereafter. Due to the dispersing effect of ethanol, FeOOH particles of 20-150 nm were coated on the D001 surfaces. The nFeOOH@D001 obtained a Cr(VI) removal efficiency and capacity of 80.2% and 7.4 mg/g respectively, 5 times and 8 times higher than that of the pristine D001. The Cr(VI) removal by nFeOOH@D001 followed the pseudo second-order kinetics and the Langmuir adsorption model. Column experiments also demonstrated that the nFeOOH@D001 exhibited a much better ability to remove Cr(VI) as compared to the D001. Additionally, the nFeOOH@D001 showed a potential for reusability and renewability. The adsorbed nFeOOH@D001 could be easily desorbed by 0.1 M acetic acid and a reuse efficiency of 92.7% could be maintained after 4 desorption-adsorption cycles. The used nFeOOH@D001 could be eluted by 0.1 M HCl to remove nFeOOH, and the renewed D001 could be recoated by nFeOOH and achieved a regeneration rate of 97.8% for Cr(VI) removal. The above results indicated that nano-sized goethite modification is a promising method to endow D001 with the ability to remove Cr(VI) from water.
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Affiliation(s)
- Siqiao Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, People's Republic of China
| | - Huaitian Bu
- Department of Materials and Nanotechnology, SINTEF Industry, Oslo, Norway
| | - Weilong Zeng
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
| | - Xiangyu Zheng
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
| | - Penchi Chiang
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China
- The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, People's Republic of China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, People's Republic of China
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Tuning the Fe(II)/hydroxide Ratio during Synthesis of Magnetite Nanoparticles to Maximize Cr(VI) Uptake Capacity. WATER 2022. [DOI: 10.3390/w14091335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The impact of hydroxyl excess as defined by the Fe(II)/hydroxide ratio during the synthesis of Fe3O4 nanoparticles by oxidative precipitation of FeSO4 was examined as a critical parameter determining the potential for Cr(VI) uptake from polluted water. Various samples were prepared by varying the OH− excess in the range of −0.10 up to +0.03 M and characterized according to their composition, morphology, and surface configuration. Their efficiency for Cr(VI) removal was evaluated by batch adsorption tests, carried out under similar conditions with drinking water purification in the concentration range below 10 mg/L. Results indicate that near the zero-excess point for hydroxyl balance, the uptake capacity for residual Cr(VI) concentration equal to 25 μg/L remains at very low levels (<0.5 mg/g). However, a small increase above +0.02 M features synthesized nanoparticles with an uptake capacity of 2.5 mg/g owed to the decrease in particles size (28 nm) and enhancement of the reducing potential (Fe2+/Fe3+ = 0.42). In addition, utilizing negative excess values below −0.05 M triggers a similar efficiency rise, although the morphology of the obtained aggregates is rather different. Such finding is attributed to a possible exchange mechanism between adsorbed sulfates and chromate anions that assist approach of Cr(VI) to the material’s surface. Overall, proper tuning of hydroxyl excess offers multiple options for the implementation of monodisperse magnetically responsive nanoparticles or larger aggregates with optimized purification efficiency in water technology.
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Synthesis and Optimization of Cr (VI) Removal from Aqueous Solution by Activated Carbon with Magnetic Fe3O4Nanoparticles by Response Surface Methodology. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/9366899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
In this study, the activated carbon with Fe3O4 nanoparticles was synthesized and employed as an effective tool to remove the Cr (VI) from the aqueous solution. The process inputs like concentration of Cr (VI), the dosage of Fe3O4 nanoparticles in activated carbon, and pH of the aqueous solution were optimized by response surface methodology, and their effects were studied. The statistical analysis by ANOVA showed that the process inputs were significantly affected the removal rate, with the maximum impact provided by the pH of the aqueous solution. The best parameters were identified to be pH of 3, aqueous solution concentration of 12 mg/L, the dosage of 1.5 g/L, and adsorption time of 40 min. SEM, EDS, and FTIR characterized the synthesized activated carbon/Fe3O4 samples with magnetic characteristics. Adsorption isotherms and adsorption kinetics analyzed the chemical stability of the synthesized nanocomposite.
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Lu J, Li B, Li W, Zhang X, Zhang W, Zhang P, Su R, Liu D. Nano iron oxides impregnated chitosan beads towards aqueous Cr(VI) elimination: Components optimization and performance evaluation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Mudhoo A, Sillanpää M. Magnetic nanoadsorbents for micropollutant removal in real water treatment: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2021; 19:4393-4413. [PMID: 34341658 PMCID: PMC8320315 DOI: 10.1007/s10311-021-01289-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/18/2021] [Indexed: 05/24/2023]
Abstract
Pure water will become a golden resource in the context of the rising pollution, climate change and the recycling economy, calling for advanced purification methods such as the use of nanostructured adsorbents. However, coming up with an ideal nanoadsorbent for micropollutant removal is a real challenge because nanoadsorbents, which demonstrate very good performances at laboratory scale, do not necessarily have suitable properties in in full-scale water purification and wastewater treatment systems. Here, magnetic nanoadsorbents appear promising because they can be easily separated from the slurry phase into a denser sludge phase by applying a magnetic field. Yet, there are only few examples of large-scale use of magnetic adsorbents for water purification and wastewater treatment. Here, we review magnetic nanoadsorbents for the removal of micropollutants, and we explain the integration of magnetic separation in the existing treatment plants. We found that the use of magnetic nanoadsorbents is an effective option in water treatment, but lacks maturity in full-scale water treatment facilities. The concentrations of magnetic nanoadsorbents in final effluents can be controlled by using magnetic separation, thus minimizing the ecotoxicicological impact. Academia and the water industry should better collaborate to integrate magnetic separation in full-scale water purification and wastewater treatment plants.
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Affiliation(s)
- Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837 Mauritius
| | - Mika Sillanpää
- Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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Liu P, Cai W, Chen J, Yang Z, Zhou J, Cai Z, Fan J. One-pot hydrothermal preparation of manganese-doped carbon microspheres for effective deep removal of hexavalent chromium from wastewater. J Colloid Interface Sci 2021; 599:427-435. [PMID: 33962203 DOI: 10.1016/j.jcis.2021.04.098] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022]
Abstract
Mn-doped activated carbon microspheres (MnOx/ACS) with super-high adsorption capacities and deep removal capability for hexavalent chromium (Cr(VI)) were successfully prepared via an ammonium persulfate-assisted hydrothermal method followed by potassium oxalate activation using KMnO4 and sucrose as raw materials. Their -physical and chemical properties, as well as those of Mn-doped non-activated carbon spheres (MnOx/CS), were characterized by XRD, SEM, TEM, EDS-mapping, XPS, N2 adsorption-desorption, ICP-AES, and elemental analysis. It was found that the manganese oxide (MnOx) particles were uniformly embedded within the carbon spheres via layer-by-layer capture, and the MnOx/ACS exhibited strong redox activity because of the multivalent nature of MnOx, resulting in excellent adsorption performance via reduction. In particular, MnOx/ACS-4 with a Mn content of 1.06 wt% and a specific surface area of 1405.7 m2 g-1 achieved a maximum adsorption capacity of 660.7 mg g-1; this can reduce Cr(VI) content to less than 0.05 mg L-1, which meets the corresponding Chinese drinking water quality standard when the initial concentration of Cr(VI) is less than 400 mg L-1. Furthermore, this highly efficient method can be extended to prepare V-, Mo-, or W-doped carbon microspheres with significantly enhanced adsorption performance for Cr(VI) compared to bare activated carbon sphere, indicating their good application prospect for the deep removal for heavy metal ions from wastewater.
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Affiliation(s)
- Pei Liu
- School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Weiquan Cai
- School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China; School of Chemistry and Chemical Engineering, Guangzhou University, 230 Guangzhou University City Outer Ring Road, Guangzhou 510006, China.
| | - Junwu Chen
- School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Zhichao Yang
- School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Jinpeng Zhou
- School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Zhijun Cai
- International School of Materials Science and Engineering, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Jiajie Fan
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, China
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10
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Improvement in Heavy Metal Removal from Wastewater Using an External Magnetic Inductor. NANOMATERIALS 2019; 9:nano9111508. [PMID: 31652774 PMCID: PMC6915507 DOI: 10.3390/nano9111508] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 11/18/2022]
Abstract
Magnetite nanoparticles (Fe3O4) of 12 ± 4 nm diameter are electrochemically synthesized for the adsorption and magnetic harvesting of Cr(VI) from contaminated simulated solutions. The removal of Cr(VI) from aqueous media follows pseudo-second-order kinetics. The adsorption efficiency is evaluated in three different scenarios. In standard conditions, i.e., at room temperature; in a thermal bath working at 60 °C, where the temperature could be considered homogeneous within the solution; and finally, under magnetic induction heating, while adjusting the frequency and magnetic field used to attain the same temperature as in the bath experiments. Two benefits of using a magnetic inductor are demonstrated. First, the removal efficiency is almost doubled in comparison to that of the room temperature experiments, and it is higher by 30% compared to that of the bath setup. At the same time as the adsorption occurs, a redox reaction occurs on the surface of the nanoparticles, and Cr(VI), the predominant species in the contaminated solution, is significantly reduced to Cr(III). Through X-ray photoelectron spectroscopy, it is shown that a greater reduction effect is achieved when working in induction conditions than at room temperature. This is the first time that this synergistic effect using magnetic induction heating has been demonstrated for heavy metal decontamination of wastewater.
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12
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Yang X, Liu L, Zhang M, Tan W, Qiu G, Zheng L. Improved removal capacity of magnetite for Cr(VI) by electrochemical reduction. JOURNAL OF HAZARDOUS MATERIALS 2019; 374:26-34. [PMID: 30978627 DOI: 10.1016/j.jhazmat.2019.04.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/27/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
Aqueous hexavalent chromium (Cr(VI)) poses serious threats to ecological environments. Magnetite is a potential adsorbent for Cr(VI). However, its adsorption capacity is limited due to the formation of Fe(III) oxide coating on magnetite surface. Herein, constant potential reduction was conducted to improve the Cr(VI) removal capacity of magnetite, and the influence of pH, potential, and supporting electrolytes including KNO3, KCl, and K2SO4 on the adsorption capacity was also investigated. The results showed that the highest Cr(VI) reduction percentage reached 93.7% with a total Cr removal capacity of 514.7 mg g-1 at optimized pH 2 and -0.2 V (vs. SCE) in supporting electrolyte of KNO3. Cr(VI) was reduced to Cr(III) on the surface of magnetite due to the direct electrochemical reduction at low potentials and reduction by Fe2+aq electrochemically generated from magnetite. The Cr(III) was subsequently removed and easily separated due to the formation of Cr(OH)3 precipitate on magnetite surface when KNO3 and KCl were used as supporting electrolyte; however, when K2SO4 was used instead, Cr(OH)3 precipitate was not observed. The decrease in pH and electrical potential was found to facilitate the reduction and removal of Cr(VI). This work proposes a facile method to enhance Cr(VI) removal by iron oxides.
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Affiliation(s)
- Xiong Yang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Lihu Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Mingzhe Zhang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Wenfeng Tan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Guohong Qiu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River), Ministry of Agriculture, Hubei Key Laboratory of Soil Environment and Pollution Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China.
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
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Kamali M, Persson KM, Costa ME, Capela I. Sustainability criteria for assessing nanotechnology applicability in industrial wastewater treatment: Current status and future outlook. ENVIRONMENT INTERNATIONAL 2019; 125:261-276. [PMID: 30731376 DOI: 10.1016/j.envint.2019.01.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 01/19/2019] [Accepted: 01/19/2019] [Indexed: 06/09/2023]
Abstract
Application of engineered nanomaterials for the treatment of industrial effluents and to deal with recalcitrant pollutants has been noticeably promoted in recent years. Laboratory, pilot and full-scale studies emphasize the potential of this technology to offer promising treatment options to meet the future needs for clean water resources and to comply with stringent environmental regulations. The technology is now in the stage of being transferred to the real applications. Therefore, the assessment of its performance according to sustainability criteria and their incorporation into the decision-making process is a key task to ensure that long term benefits are achieved from the nano-treatment technologies. In this study, the importance of sustainability criteria for the conventional and novel technologies for the treatment of industrial effluents was determined in a general approach assisted by a fuzzy-Delphi method. The criteria were categorized in technical, economic, environmental and social branches and the current situation of the nanotechnology regarding the criteria was critically discussed. The results indicate that the efficiency and safety are the most important parameters to make sustainable choices for the treatment of industrial effluents. Also, in addition to the need for scaling-up the nanotechnology in various stages, the study on their environmental footprint must continue in deeper scales under expected environmental conditions, in particular the synthesis of engineered nanomaterials and the development of reactors with the ability of recovery and reuse the nanomaterials. This paper will aid to select the most sustainable types of nanomaterials for the real applications and to guide the future studies in this field.
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Affiliation(s)
- Mohammadreza Kamali
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Kenneth M Persson
- Department of Building and Environmental Technology/Water Resources Engineering, Lund University, PO Box 118, SE-221 00 Lund, Sweden
| | - Maria Elisabete Costa
- Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Isabel Capela
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
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Abstract
The presence of antimony in water remains a major problem for drinking water technology, defined by the difficulty of available adsorbents to comply with the very low regulation limit of 5 μg/L for the dominant Sb(V) form. This study attempts to develop a new class of water adsorbents based on the combination of amorphous iron oxy-hydroxide with Fe3O4 nanoparticles and optimized to the sufficient uptake of Sb(V). Such a Fe3O4/FeOOH nanocomposite is synthesized by a two-step aqueous precipitation route from iron salts under different oxidizing and acidity conditions. A series of materials with various contents of Fe3O4 nanoparticles in the range 0–100 wt % were prepared and tested for their composition, and structural and morphological features. In order to evaluate the performance of prepared adsorbents, the corresponding adsorption isotherms, in the low concentration range for both Sb(III) and Sb(V), were obtained using natural-like water. The presence of a reducing agent such as Fe3O4 results in the improvement of Sb(V) uptake capacity, which is found around 0.5 mg/g at a residual concentration of 5 μg/L. The intermediate reduction of Sb(V) to Sb(III) followed by Sb(III) adsorption onto FeOOH is the possible mechanism that explains experimental findings.
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Bishoge OK, Zhang L, Suntu SL, Jin H, Zewde AA, Qi Z. Remediation of water and wastewater by using engineered nanomaterials: A review. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2018; 53:537-554. [PMID: 29364029 DOI: 10.1080/10934529.2018.1424991] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanotechnology is currently a fast-rising socioeconomic and political knowledge-based technology owing to the unique characteristics of its engineered nanomaterials. This branch of technology is useful for water and wastewater remediation. Many scientists and researchers have been conducting different studies and experiments on the applications of engineered nanomaterials at the local to international level. This review mainly aims to provide a current overview of existing knowledge on engineered nanomaterials and their applications in water and wastewater remediation. Furthermore, the present risks and challenges of nanotechnology are examined.
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Affiliation(s)
- Obadia K Bishoge
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Lingling Zhang
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Shaldon L Suntu
- c Information Engineering, School of Computer and Communication Technology , University of Science and Technology Beijing , Beijing , PR China
| | - Hui Jin
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Abraham A Zewde
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Zhongwei Qi
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
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16
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Stylianou S, Simeonidis K, Mitrakas M, Zouboulis A, Ernst M, Katsoyiannis IA. Reductive precipitation and removal of Cr(VI) from groundwaters by pipe flocculation-microfiltration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:12256-12262. [PMID: 28842800 DOI: 10.1007/s11356-017-9967-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 08/14/2017] [Indexed: 06/07/2023]
Abstract
Chromium (Cr(VI)) is a very toxic and carcinogenic element, which is widely present in groundwaters, mainly due to geogenic conditions. The limit of Cr(VI) in drinking water is expected to be reduced to 10 μg/L in both the USA and the European Union. Recent literature findings indicated that the most efficient process in reducing Cr(VI) levels to below 10 μg/L proved to be Cr(VI) reduction by Fe(II), by applying a molar ratio Fe(II)/Cr(VI) of around 9. In the present work, we investigated the reduction of Cr(VI) by Fe(II) in pipe flocculation reactors followed by filtration of insoluble products by microfiltration. The proposed technology involves re-circulation of a part of the sludge in the pipe reactors, in order to improve kinetics and efficiency of the process. The obtained results showed that with a Fe(II) dose of around 1 mg/L, Cr(VI) was reduced to below 10 μg/L, by even an initial concentration as high as 300 μg/L of Cr(VI), corresponding to a molar ratio Fe(II)/Cr(VI) of around 3, thus reducing the overall quantity of reductive reagents and of the produced sludge. This ratio was also confirmed by the XPS analysis, which also showed that Cr(VI) was reduced to Cr(III) and then precipitated either as Cr(OH)3 or associated with the produced iron oxides.
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Affiliation(s)
- Stylianos Stylianou
- Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Konstantinos Simeonidis
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Manassis Mitrakas
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Anastasios Zouboulis
- Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Mathias Ernst
- Institute for Water Resources and Water Supply, Hamburg University of Technology, Am Schwarzenberg-Campus 3, 21073, Hamburg, Germany
| | - Ioannis A Katsoyiannis
- Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
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17
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Gandamalla D, Lingabathula H, Yellu N. Nano titanium exposure induces dose- and size-dependent cytotoxicity on human epithelial lung and colon cells. Drug Chem Toxicol 2018; 42:24-34. [PMID: 29611443 DOI: 10.1080/01480545.2018.1452930] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The productions as well as use of Titanium dioxide nanoparticles (TNPs) were rapidly increasing in the present nano-world. The TNP becomes an inevitable part our daily life in the form of cosmeceutical, bio-medical, and nano-pharmaceutical applications. The TNPs are either inhaled or ingested into the human body through common routes of exposure like the lungs and the oral-gastrointestinal tract (GIT). Human lung and colon were exposed to test particles, TNP 18 nm (TNP 18), TNP 30 nm (TNP 30), and TNP 87 nm (TNP 87) with a dose range 0.1-100 µg/ml. The effect of exposure was determined using MTT, LDH, and DCFH-DA methods. The TNP 18, TNP 30, and TNP 87 significantly (p < 0.001) reduced cell viability in a dose- and a size-dependent manner in 60 and 100 µg/ml. The lowest IC50 values 21.80 and 24.83 µg/ml were observed in A549 and Caco-2 for the smallest size, TNP 18. Further, for TNP 30, IC50 values were 23.30 and 28.59 µg/ml compared to Nano QTZ 43.82 and 45.86 µg/ml. The EC25 values of LDH leakage were 5.83 and 9.50 µg/ml for TNP 18 in lung and colon cells. Besides, ROS levels increased significantly at doses 60 (p < 0.01) and 100 (p < 0.001) µg/ml in two cells. The smaller size particle, TNP 18 has produced a significant (p < 0.05) toxic effect at the lowest dose i.e., 10 µg/ml. Therefore, we conclude that TNP 18, TNP 30, and TNP 87 induced a dose- and size-dependent cytotoxicity via decreased cell viability, increased LDH and ROS levels by in vitro methods.
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Affiliation(s)
- Durgaiah Gandamalla
- a Department of Pharmacology and Toxicology , University College of Pharmaceutical Sciences, Kakatiya University , Warangal , India
| | - Harikiran Lingabathula
- a Department of Pharmacology and Toxicology , University College of Pharmaceutical Sciences, Kakatiya University , Warangal , India
| | - Narsimhareddy Yellu
- a Department of Pharmacology and Toxicology , University College of Pharmaceutical Sciences, Kakatiya University , Warangal , India
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18
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Kaprara E, Tziarou N, Kalaitzidou K, Simeonidis K, Balcells L, Pannunzio EV, Zouboulis A, Mitrakas M. The use of Sn(II) oxy-hydroxides for the effective removal of Cr(VI) from water: Optimization of synthesis parameters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 605-606:190-198. [PMID: 28667846 DOI: 10.1016/j.scitotenv.2017.06.199] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/03/2017] [Accepted: 06/23/2017] [Indexed: 06/07/2023]
Abstract
The development of a novel adsorbent based on Sn(II) oxy-hydroxide nanoparticles and the optimization of main synthesis parameters was examined for the efficient removal of hexavalent chromium at low residual concentration levels. The aqueous hydrolysis of Sn(II) salts in a continuous-flow process was evaluated as an effective method to synthesize an appropriate material able to operate both as an electron donor for Cr(VI) reduction, and provide a suitable crystal structure that favors strong complexation with the formed Cr(III) species. Experimental results revealed that the main hydrolysis parameters, such as pH value and tin origin/source, can be used to determine the chemical formula of the produced materials and thereby, eventually improve their uptake capacity for Cr(VI). Among the tested sorbent materials, the synthetic nanostructured hydroromarchite, Sn6O4(OH)4, prepared by the hydrolysis of SnCl2 in a highly acidic environment (pH2), was deemed the best sorbent material and it was further investigated for its Cr(VI) uptake performance under reliable conditions (column experiments) for drinking water treatment. Specifically, Rapid Small-Scale (laboratory) Column Tests indicated that aggregates of the Sn6O4(OH)4 nanomaterial can achieve a maximum uptake capacity of around 19mg/g, keeping the levels of outflow Cr(VI) below 10μg/L during the treatment of natural-like water at pH7. The high efficiency is mainly attributed to the stabilization of Sn(II) content in nanoparticles, as well as the improved surface charge density, reaching 1.0mmol[OH-]/g, whereas the obtained thermodynamic data indicate a combined reduction-sorption process. The latter aspect was further verified by XPS, showing that even in the highly-loaded sorbent materials with adsorbed chromium, its trivalent form is the predominant one. These specific characteristics suggest that the product is a more favorable candidate for wider applications in water treatment units, regarding Cr(VI) removal, compared to other examined sorbent materials.
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Affiliation(s)
- Efthimia Kaprara
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Nafsika Tziarou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Kyriaki Kalaitzidou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Konstantinos Simeonidis
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Lluis Balcells
- Institut de Ciència de Materials de Barcelona, Campus Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Elisa V Pannunzio
- INFIQC-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Anastasios Zouboulis
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Manassis Mitrakas
- Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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19
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Chang HH, Cheng TJ, Huang CP, Wang GS. Characterization of titanium dioxide nanoparticle removal in simulated drinking water treatment processes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 601-602:886-894. [PMID: 28582734 DOI: 10.1016/j.scitotenv.2017.05.228] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 05/24/2017] [Accepted: 05/24/2017] [Indexed: 06/07/2023]
Abstract
This study characterized the fate of nano-TiO2 in both powder (TiO2(P)) and suspension (TiO2(S)) forms in simulated drinking water treatments. Nano-TiO2 solutions of 0.1, 1.0, and 10mg/L were prepared with deionized water and raw waters from the Changxing and Fengshan Water Treatment Plants in Taiwan to assess the effects of water matrices on nano-TiO2 behavior during water treatment. After the laboratory simulated water treatment, including pre-chlorination, coagulation, sedimentation, filtration and post-chlorination, the residual Ti concentration ranged from 2.7 to 47.4% in different treatment units and overall removal efficiency was between 52.6% and 97.3% in all cases except for nano-TiO2 at concentration of 0.1mg/L. Overall removal efficiency for the TiO2 at 10mg/L concentration ranged from 9.3 to 53.5%. Sedimentation (after coagulation) and filtration were the most important processes for removing nano-TiO2 due in part to particle agglomeration, which was confirmed by size distribution and zeta potential measurements. The size of nano-TiO2 increased from 21-36nm to 4490nm in the supernatant after sedimentation, and subsequent filtration treatment further removed all agglomerates at size >1μm. Zeta potential revealed interactions between nano-TiO2 particles and anionic functional groups or negatively-charged natural organic matters, leading to a decrease in surface charge. After sedimentation and filtration, the zeta potential of supernatants and filtrates were close to zero, meaning the absence of nanoparticles. The highest Ti removal after sedimentation occurred in Fengshan raw water due to higher ionic strength and coagulant dosage applied. On the other hand, the surfactant additives in TiO2(S) promoted dispersion of nano-TiO2 particles, which in turn led to lower particle removal. SEM images of nanoparticles after chlorination or coagulation revealed the coverage of nano-TiO2 particles by viscous substances and formation of colloidal structures.
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Affiliation(s)
- Hui-Hsien Chang
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan; Environmental Division, Agricultural Engineering Research Center, Chung-Li, Taoyuan, Taiwan
| | - Tsun-Jen Cheng
- Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan
| | - Chin-Pao Huang
- Departmental of Civil and Environmental Engineering, University of Delaware, Newark, DE, USA
| | - Gen-Shuh Wang
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan.
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20
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Zhang M, Xiao F, Wang D, Xu X, Zhou Q. Comparison of novel magnetic polyaluminum chlorides involved coagulation with traditional magnetic seeding coagulation: Coagulant characteristics, treating effects, magnetic sedimentation efficiency and floc properties. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.03.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Elfeky SA, Mahmoud SE, Youssef AF. Applications of CTAB modified magnetic nanoparticles for removal of chromium (VI) from contaminated water. J Adv Res 2017; 8:435-443. [PMID: 28663825 PMCID: PMC5480276 DOI: 10.1016/j.jare.2017.06.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/09/2017] [Accepted: 06/09/2017] [Indexed: 12/03/2022] Open
Abstract
This study investigated the elimination of Cr(VI) from aqueous solution utilizing a composite from magnetic nanoparticles (Fe3O4) capped with cetyltrimethylammonium bromide (CTAB). The structure of the prepared composite system was examined by Fourier Transform Infra Red Spectroscopy (FTIR), X-ray Diffractometry (XRD), and Transmission Electron Microscopy (TEM). Separation of the Fe3O4/CTAB composite from the wastewater can be achieved by application of an external magnetic field. Factors affecting the Cr(VI) expulsion from wastewater such as pH, competing ions, the dosage level of the nanoparticles, and contact time were studied. The results indicated that the maximum efficiency of the present system for removal of Cr(VI) (95.77%) was in acidic conditions (pH 4), contact time 12 h, and composite dosage of 12 mg/mL. The used Cr(VI) concentration was 100 mg/L. Considering results, the Fe3O4/CTAB system showed a high capability and selectivity for the treatment of water sullied with Cr(VI). This can recede the mutagenic and carcinogenic health risk caused by Cr(VI) water tainting.
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Affiliation(s)
- Souad A Elfeky
- National Institute of Laser Enhanced Science (NILES), Cairo University, Giza 12613, Egypt
| | - Shymaa Ebrahim Mahmoud
- Cairo University Centre for Environmental Hazards Mitigation (CEHM), Cairo University, Giza 12613, Egypt
| | - Ahmed Fahmy Youssef
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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22
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Gupta N, Pant P, Gupta C, Goel P, Jain A, Anand S, Pundir A. Engineered magnetic nanoparticles as efficient sorbents for wastewater treatment: a review. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/14328917.2017.1334846] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nikesh Gupta
- Special Centre for Nanosciences, Jawaharlal Nehru University, New Delhi, India
| | - Parul Pant
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Chetna Gupta
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Puneet Goel
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Astha Jain
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Sakshi Anand
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
| | - Anuj Pundir
- Department of Chemistry, Hansraj College, University of Delhi, Delhi, India
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23
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24
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Pinakidou F, Kaprara E, Katsikini M, Paloura EC, Simeonidis K, Mitrakas M. Sn(II) oxy-hydroxides as potential adsorbents for Cr(VI)-uptake from drinking water: An X-ray absorption study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 551-552:246-253. [PMID: 26878637 DOI: 10.1016/j.scitotenv.2016.01.208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 01/29/2016] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
The feasibility of implementing a Sn(II) oxy-hydroxide (Sn6O4(OH)4) for the reduction and adsorption of Cr(VI) in drinking water treatment was investigated using XAFS spectroscopies at the Cr-K-edge. The analysis of the Cr-K-edge XANES and EXAFS spectra verified the effective use of Sn6O4(OH)4 for successful Cr(VI) removal. Adsorption isotherms, as well as dynamic Rapid Small Scale Test (RSSCT) in NSF water matrix showed that Sn6O4(OH)4 can decrease Cr(VI) concentration below the upcoming regulation limit of 10μg/L for drinking water. Moreover, an uptake capacity of 7.2μg/mg at breakthrough concentration of 10μg/L was estimated from the RSSCT, while the residual Cr(VI) concentration ranged at sub-ppb level for a significant period of the experiment. Furthermore, no evidence for the formation of Cr(OH)3 precipitates was found. On the contrary, Cr(III)-oxyanions were chemisorbed onto SnO2, which was formed after Sn(II)-oxidation during Cr(VI)-reduction. Nevertheless, changes in the type of Cr(III)-inner sphere complexes were observed after increasing surface coverage: Cr(III)-oxyanions preferentially sorb in a geometry which combines both bidentate binuclear ((2)C) and monodentate ((1)V) geometries, at the expense of the present bidentate mononuclear ((2)E) contributions. On the other hand, the pH during sorption does not affect the adsorption mechanism of Cr(III)-species. The implementation of Sn6O4(OH)4 in water treatment technology combines the advantage of rapidly reducing a large amount of Cr(VI) due to donation of two electrons by Sn(II) and also the strong chemisorption of Cr(III) in a combination of the (2)C and (1)V configurations, which enhances the safe disposal of spent adsorbents.
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Affiliation(s)
- Fani Pinakidou
- Aristotle University of Thessaloniki, School of Chemical Engineering, Analytical Chemistry Laboratory, 54124 Thessaloniki, Greece
| | - Efthimia Kaprara
- Aristotle University of Thessaloniki, School of Chemical Engineering, Analytical Chemistry Laboratory, 54124 Thessaloniki, Greece
| | - Maria Katsikini
- Aristotle University of Thessaloniki, School of Physics, Department of Solid State Physics, 54124 Thessaloniki, Greece
| | - Eleni C Paloura
- Aristotle University of Thessaloniki, School of Physics, Department of Solid State Physics, 54124 Thessaloniki, Greece
| | - Konstantinos Simeonidis
- Aristotle University of Thessaloniki, School of Physics, Department of Solid State Physics, 54124 Thessaloniki, Greece
| | - Manassis Mitrakas
- Aristotle University of Thessaloniki, School of Chemical Engineering, Analytical Chemistry Laboratory, 54124 Thessaloniki, Greece.
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25
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Ebrahimi Zarandi MJ, Sohrabi MR, Khosravi M, Mansouriieh N, Davallo M, Khosravan A. Optimizing Cu(II) removal from aqueous solution by magnetic nanoparticles immobilized on activated carbon using Taguchi method. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:38-47. [PMID: 27386981 DOI: 10.2166/wst.2016.152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This study synthesized magnetic nanoparticles (Fe(3)O(4)) immobilized on activated carbon (AC) and used them as an effective adsorbent for Cu(II) removal from aqueous solution. The effect of three parameters, including the concentration of Cu(II), dosage of Fe(3)O(4)/AC magnetic nanocomposite and pH on the removal of Cu(II) using Fe(3)O(4)/AC nanocomposite were studied. In order to examine and describe the optimum condition for each of the mentioned parameters, Taguchi's optimization method was used in a batch system and L9 orthogonal array was used for the experimental design. The removal percentage (R%) of Cu(II) and uptake capacity (q) were transformed into an accurate signal-to-noise ratio (S/N) for a 'larger-the-better' response. Taguchi results, which were analyzed based on choosing the best run by examining the S/N, were statistically tested using analysis of variance; the tests showed that all the parameters' main effects were significant within a 95% confidence level. The best conditions for removal of Cu(II) were determined at pH of 7, nanocomposite dosage of 0.1 gL(-1) and initial Cu(II) concentration of 20 mg L(-1) at constant temperature of 25 °C. Generally, the results showed that the simple Taguchi's method is suitable to optimize the Cu(II) removal experiments.
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Affiliation(s)
| | - Mahmoud Reza Sohrabi
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail:
| | - Morteza Khosravi
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail:
| | - Nafiseh Mansouriieh
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail:
| | - Mehran Davallo
- Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran E-mail:
| | - Azita Khosravan
- Department of New Materials, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran
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26
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Simeonidis K, Liébana-Viñas S, Wiedwald U, Ma Z, Li ZA, Spasova M, Patsia O, Myrovali E, Makridis A, Sakellari D, Tsiaoussis I, Vourlias G, Farle M, Angelakeris M. A versatile large-scale and green process for synthesizing magnetic nanoparticles with tunable magnetic hyperthermia features. RSC Adv 2016. [DOI: 10.1039/c6ra09362k] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Production of functionalized nanoparticles for magnetic hyperthermia by an industrial-scale process.
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27
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Schaumann GE, Baumann T, Lang F, Metreveli G, Vogel HJ. Engineered nanoparticles in soils and waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 535:1-2. [PMID: 26087855 DOI: 10.1016/j.scitotenv.2015.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Gabriele E Schaumann
- Universität Koblenz-Landau, Institute for Environmental Sciences, Working Group of Environmental and Soil Chemistry, Fortstr. 7, D-76829 Landau, Germany.
| | - Thomas Baumann
- Technische Universität München, Institute of Hydrochemistry, Munich, Germany..
| | - Friederike Lang
- Albert-Ludwigs-Universität Freiburg, Institute of Forest Sciences, Chair of Soil Ecology, 79085 Freiburg i.Br., Germany.
| | - George Metreveli
- Universität Koblenz-Landau, Institute for Environmental Sciences, Working Group of Environmental and Soil Chemistry, Fortstr. 7, D-76829 Landau, Germany.
| | - Hans-Jörg Vogel
- Helmholtz Centre for Environmental Research - UFZ, Department Soil Physics, Theodor-Lieser-Strasse 4, D-06120 Halle, Germany; Martin-Luther-University Halle-Wittenberg, Institute of Soil Science and Plant Nutrition, Von-Seckendorff-Platz 3, 06120 Halle/Saale, Germany.
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28
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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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29
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Choudhury PR, Mondal P, Majumdar S. Synthesis of bentonite clay based hydroxyapatite nanocomposites cross-linked by glutaraldehyde and optimization by response surface methodology for lead removal from aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra18490h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis and characterization of novel BT–HAp nanocomposites is described and their adsorption of lead from aqueous solution followed by RSM optimization is demonstrated.
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Affiliation(s)
- Piyali Roy Choudhury
- Ceramic Membrane Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata–700 032
- India
| | - Priyanka Mondal
- Ceramic Membrane Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata–700 032
- India
| | - Swachchha Majumdar
- Ceramic Membrane Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata–700 032
- India
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