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Shahrokhi-Shahraki R, Benally C, El-Din MG, Park J. High efficiency removal of heavy metals using tire-derived activated carbon vs commercial activated carbon: Insights into the adsorption mechanisms. CHEMOSPHERE 2021; 264:128455. [PMID: 33032208 DOI: 10.1016/j.chemosphere.2020.128455] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
In this study, activated carbon was derived from pulverized waste tires using carbonization and chemical activation techniques. Single and competitive batch adsorption experiments for the removal of three synthetic heavy metal ions (Pb2+, Cu2+ and Zn2+) from an aqueous solution were performed to benchmark the efficiency of the Tire-derived Activated Carbon (TAC) in comparison to that of commercial activated carbon (CAC), which was used as the reference material. The sorbents physicochemical properties with corresponding adsorption mechanisms were evaluated by different experimental techniques. TAC exhibited great potential to adsorb heavy metals, with monolayer adsorption capacities as high as 322.5, 185.2, and 71.9 mg g-1 for Pb2+, Cu2+ and Zn2+, respectively, which were significantly higher than the adsorption capacities exhibited by CAC, which were 42.5, 15.0, and 14.0 mg∙g-1 for Pb2+, Cu2+ and Zn2+, respectively. Competitive adsorption results demonstrated the adsorption ability of sorbents is restricted by presence of other ions, and was decreased compared to the single sorption. Sorption kinetics data, with better fit to the pseudo-second order kinetics model, revealed that TAC had faster sorption rate in comparison to CAC. The adsorption capacities of TAC and CAC were reduced to half of their initial capacities after three successive adsorption-desorption cycles. Zeta potential, FT-IR, and XPS analyses revealed that electrostatic attraction and surface complexation mechanisms, as two metal-adsorbing mechanisms, were more influential for TAC. For CAC, a higher cation exchange capacity (CEC) value indicated that the removal of heavy metals by ion exchange was the predominant mechanism.
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Affiliation(s)
- Rahim Shahrokhi-Shahraki
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, South Korea.
| | - Chelsea Benally
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada.
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada.
| | - Junboum Park
- Department of Civil and Environmental Engineering, Seoul National University, Seoul, South Korea.
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Efthimiou I, Georgiou Y, Vlastos D, Dailianis S, Deligiannakis Y. Assessing the cyto-genotoxic potential of model zinc oxide nanoparticles in the presence of humic-acid-like-polycondensate (HALP) and the leonardite HA (LHA). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137625. [PMID: 32169638 DOI: 10.1016/j.scitotenv.2020.137625] [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: 01/16/2020] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
The present study investigates the potential cyto-genotoxic effects of model zinc oxide nanoparticles (ZnO NPs) on human lymphocytes, with and/or without humic acids (HAs). Two types of HAs were studied, a natural well-characterized leonardite HA (LHA) and its synthetic-model, a humic-acid-like-polycondensate (HALP). The Cytokinesis Block Micronucleus (CBMN) assay was applied in cell cultures treated with different concentrations of ZnO NPs (0.5, 5, 10, 20 μg mL-1) and under different concentrations of either HALP or LHA (ZnO NPs-HALP and ZnO NPs-LHA, at concentrations of 0.5-0.8, 5-8, 10-16, 20-32 and 0.5-2, 5-20, 10-40, 20-80 μg mL-1, respectively). According to the results, ZnO NPs lacked genotoxicity but demonstrated cytotoxic potential. Binary mixtures of ZnO NPs-HAs (ZnO NPs-HALP or ZnO NPs-LHA) showed negligible alterations of micronuclei (MN) formation in challenged cells, with cytotoxic effects revealed only in case of cells treated with ZnO NPs-LHA at the concentration 5-20 μg mL-1. Furthermore, no genotoxic phenomena were exerted neither by the ZnO NPs nor from their mixtures with HAs. These findings indicate [i] the cytotoxic activity of used ZnO NPs on human lymphocytes, and [ii] reveal the protective role of HAs against ZnO NPs mediated cytotoxicity.
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Affiliation(s)
- Ioanna Efthimiou
- Department of Environmental Engineering, University of Patras, GR-30100 Agrinio, Greece
| | - Yiannis Georgiou
- Department of Physics, University of Ioannina, GR-45110 Ioannina, Greece
| | - Dimitris Vlastos
- Department of Environmental Engineering, University of Patras, GR-30100 Agrinio, Greece.
| | - Stefanos Dailianis
- Section of Animal Biology, Department of Biology, Faculty of Sciences, University of Patras, GR-26500, Rio, Patra, Greece
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A Hybrid {Silk@Zirconium MOF} Material as Highly Efficient As III-sponge. Sci Rep 2020; 10:9358. [PMID: 32518373 PMCID: PMC7283345 DOI: 10.1038/s41598-020-66091-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 04/17/2020] [Indexed: 11/16/2022] Open
Abstract
Exposure of humans to Arsenic from groundwater drinking sources is an acute global public health problem, entailing the urgent need for highly efficient/low-cost Arsenite (AsIII) up-taking materials. Herein we present an innovative hybrid-material, ZrMOF@SFd operating like an “AsIII-sponge” with unprecedented efficiency of 1800 mg AsIII gr−1. ZrMOF@SFd consists of a neutral Zirconium Metal-Organic Framework [ZrMOF] covalently grafted on a natural silk-fiber (SFd). ZrMOF itself exhibits AsIII adsorption of 2200 mg gr−1, which supersedes any -so far- known AsΙΙΙ-sorbent. Using XPS, FTIR, BET-porosimetry data, together with theoretical Surface-Complexation-Modeling (SCM), we show that the high-AsΙΙΙ-uptake is due to a sequence of two phenomena:[i] at low AsIII-concentrations, surface-complexation of H3AsO3 results in AsIII-coated voids of ZrMOF, [ii] at increased AsIII-concentrations, the AsIII-coated voids of ZrMOF are filled-up by H3AsO3via a partitioning-like mechanism. In a more general context, the present research exemplifies a mind-changing concept, i.e. that a “partitioning-like” mechanism can be operating for adsorption of metalloids, such as H3AsO3, by metal oxide materials. So far, such a mechanism has been conceptualized only for the uptake of non-polar organics by natural organic matter or synthetic polymers.
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Psathas P, Georgiou Y, Moularas C, Armatas GS, Deligiannakis Y. Controlled-Phase Synthesis of Bi2Fe4O9 & BiFeO3 by Flame Spray Pyrolysis and their evaluation as non-noble metal catalysts for efficient reduction of 4-nitrophenol. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.04.059] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Zhao D, Xu B, Yang J, Wu J, Zhai W, Yang B, Liu M. Rapid Preparation of TiO 2-x and Its Photocatalytic Oxidation for Arsenic Adsorption under Visible Light. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3853-3861. [PMID: 32200636 DOI: 10.1021/acs.langmuir.9b02444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A rapid preparation method of TiO2-x by thermal treatment using H2TiO3 as the precursor was proposed compared with the static hydrogenation thermal treatment process. Its adsorption properties of arsenic under visible light were explored and investigated as well. Various colors of TiO2-x were prepared and characterized via XRD, TEM, BET, and so on. The results indicate that the method of rapid preparation is feasible. The TiO2-x exhibits a larger particle size that varied from 10 nm to 2 μm, and deeper color products were obtained as the treatment temperature increased from 600 to 900 °C. Light yellow TiO2-x was prepared after increasing the temperature from 600 to 900 °C, Ti4O7 and Ti6O11 with a dark color were formed under a H2 atmosphere at 1500 °C. The arsenic adsorption performances of some samples under visible light were tested, and reveal a high efficiency of TiO2-x in the photocatalytic oxidation arsenic adsorption under visible light, the conversion ratio of As(III) photocatalytic oxidation fluctuates around 2.85 mgAsg-1 h-1. In the absence of visible light, the adsorption capacities for As(III) and As(V) are 3.7 and 42.7 mg/g, respectively, at pH = 3. Under visible light condition, the adsorption capacity of As(III) increases sharply to 15.6 mg/g, which provides the foundation for a new application of TiO2-x in the field of arsenic adsorption.
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Affiliation(s)
- Ding Zhao
- State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, 253 Xuefu Road, Kunming 650093, P. R. China
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Baoqiang Xu
- State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, 253 Xuefu Road, Kunming 650093, P. R. China
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Jia Yang
- State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, 253 Xuefu Road, Kunming 650093, P. R. China
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Jian Wu
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Weiran Zhai
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Bin Yang
- State Key Laboratory of Complex Nonferrous Metal Resources Clear Utilization, 253 Xuefu Road, Kunming 650093, P. R. China
- Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- National Engineering Laboratory for Vacuum Metallurgy, 253 Xuefu Road, Kunming 650093, P. R. China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
| | - Minghui Liu
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, 253 Xuefu Road, Kunming 650093, P. R. China
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Staszak M. Rubber industry. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2018-0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractFollowing chapter presents short introductory description of rubber and rubber industry. The main problem of rubber industry is the way of the usage of spent tires. Furthermore very important group of problems arise considering the metal and nonmetal additives which are significant component of the vulcanized rubber. The key attention is dedicated to typical ways of rubber usage in utilization and recovery of metals from spent rubber materials concentrating specifically on used tires processing. The method of recovery of rare metals from rubber tires was described. The rubber debris finds widest use in the field of waste metal solutions processing. The environmental pollution caused by metals poses serious threat to humans. Several applications of the use of waste rubber debris to remove metals from environmental waters were described. Moreover, the agriculture usage of waste tire rubber debris is described, presenting systems where the rubber material can be useful as a soil replacement.
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Affiliation(s)
- Maciej Staszak
- Institute of Chemical Technology and Engineering , Poznań University of Technology , Berdychowo St. 4 , Poznań 60-965 , Poland
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Calugaru IL, Neculita CM, Genty T, Zagury GJ. Metals and metalloids treatment in contaminated neutral effluents using modified materials. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 212:142-159. [PMID: 29428649 DOI: 10.1016/j.jenvman.2018.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 01/11/2018] [Accepted: 02/01/2018] [Indexed: 06/08/2023]
Abstract
Circumneutral surface water and groundwater can contain hazardous concentrations of metals and metalloids that can threaten organisms in surrounding ecosystems. Extensive research has been conducted over the past two decades to prevent, limit, and treat water pollution. Among the currently available treatment options is the use of natural and residual materials, which is generally regarded as effective and inexpensive. The modification of such materials enhances the removal capacity of metals and metalloids, as well as the physical and chemical stability of the materials and resulting sludge (after treatment). This paper reviews several modified materials that have produced and evaluated in the past twenty years to treat various contaminants in water under specific conditions. Important factors on performance improvement following the modifications are emphasized. Sorption capacity and kinetics, and element removal mechanisms are also discussed. Element recovery, material regeneration, water reuse, evaluation of treatment efficiency for real effluents are also considered, as well as the applicability of these materials in both active and passive treatment systems. Modified natural and residual materials are a promising option for the treatment of metals and metalloids in circumneutral contaminated waters. However, further research is necessary to evaluate their field-scale performance and to properly assess treatment costs.
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Affiliation(s)
- Iuliana Laura Calugaru
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada; Technology Center for Industrial Waste (Centre Technologique des Résidus Industriels - CTRI), 425 Boul. du Collège, Rouyn-Noranda, QC, J9X 5E5, Canada
| | - Carmen Mihaela Neculita
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada.
| | - Thomas Genty
- Research Institute on Mines and Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), 445 Boul. de l'Université, Rouyn-Noranda, QC, J9X 5E4, Canada
| | - Gérald J Zagury
- RIME, Department of Civil, Geological, and Mining Engineering, Polytechnique Montréal, Montréal, QC, H3C 3A7, Canada
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