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Porous thiourea-grafted-chitosan hydrogels: Synthesis and sorption of toxic metal ions from contaminated waters. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125504] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Yen Le TT, García MR, Grabner D, Nachev M, Balsa-Canto E, Hendriks AJ, Zimmermann S, Sures B. Mechanistic simulation of bioconcentration kinetics of waterborne Cd, Ag, Pd, and Pt in the zebra mussel Dreissena polymorpha. CHEMOSPHERE 2020; 242:124967. [PMID: 31677506 DOI: 10.1016/j.chemosphere.2019.124967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/17/2019] [Accepted: 09/24/2019] [Indexed: 05/21/2023]
Abstract
Mechanistic models based on chemical properties of metals and body size have received substantial attention for their potential application to various metals and to different conditions without required calibration. This advantage has been demonstrated for a number of metals, such as Cd and Ag. However, the capacity of metal-specific chemical properties to explain variations in the accumulation for platinum-group elements (PGEs) has not been investigated yet, although emission of these metals is of increasing concern. Once being released, PGEs exist in the environment in mixtures with other metals. The present study attempted to model the accumulation of Pd and Pt in mixtures with Ag and Cd in the zebra mussel (Dreissena polymorpha) from the aqueous phase; and to investigate the potential application of mechanistic models to Pd and Pt. The present study showed statistically insignificant differences in metal accumulation among size groups in a narrow range of shell length (16-22 mm). Kinetic models could simulate well the accumulation of Cd, Ag, and Pt when metal-specific responses of zebra mussels are taken into consideration. These responses include enhanced immobilisation as a detoxifying mechanism and exchange between soft tissues and shells via the extrapallial fluid. Environmental conditions, e.g. the presence of abiotic ligands such as chloride, might also play an important role in metal accumulation. Significant relationships between the absorption efficiency and the covalent index indicate the potential application of mechanistic models based on this chemical property to Pt.
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Affiliation(s)
- T T Yen Le
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, D-45141, Germany.
| | - Míriam R García
- Process Engineering Group, Spanish Council for Scientific Research, IIM-CSIC, Vigo, 36208, Spain
| | - Daniel Grabner
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, D-45141, Germany
| | - Milen Nachev
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, D-45141, Germany
| | - Eva Balsa-Canto
- Process Engineering Group, Spanish Council for Scientific Research, IIM-CSIC, Vigo, 36208, Spain
| | - A Jan Hendriks
- Department of Environmental Science, Faculty of Science, Radboud University Nijmegen, Nijmegen, 6525, HP, the Netherlands
| | - Sonja Zimmermann
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, D-45141, Germany
| | - Bernd Sures
- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, D-45141, Germany
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Humelnicu D, Lazar MM, Ignat M, Dinu IA, Dragan ES, Dinu MV. Removal of heavy metal ions from multi-component aqueous solutions by eco-friendly and low-cost composite sorbents with anisotropic pores. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120980. [PMID: 31442692 DOI: 10.1016/j.jhazmat.2019.120980] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 08/06/2019] [Accepted: 08/07/2019] [Indexed: 05/28/2023]
Abstract
Copper, nickel, zinc, chromium, and iron ions are the prevailing contaminants in the aqueous effluents resulting from the photo-etching industry. In this context, we investigate here the metal ion sorption performance of an ion-imprinted cryogel (IIC), consisting of low-cost materials coming from renewable resources, towards multi-component metal ion solutions. The IIC sorbent, which is based on a chitosan matrix embedding a natural zeolite, was synthesized using a straightforward strategy by coupling copper-imprinting and unidirectional ice-templating methods. As consequence, the 1D-orientation and the interconnectivity of flow-channels sustain the fast metal ion diffusion within the IIC anisotropic structure. The removal efficiency of IIC sorbent reached 50% after 30 min, and the sorption equilibrium was attained within 150 min. For assessing the successful formation of imprinted cavities with well-defined sizes controlled by the radius of copper ions used as template, selectivity studies were performed on binary, ternary, and five-component synthetic mixtures. The efficiency of IIC as sorbent was further evaluated on real-life aqueous effluents discharged from photo-etching processes; thus, an IIC dosage of 6 g L-1 was found to remove 98.89% of Cu2+, 94.56% of Fe3+, 91.67% of Ni2+, 92.24% of Zn2+, and 82.76% of Cr3+ ions from this type of industrial wastewaters.
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Affiliation(s)
- Doina Humelnicu
- "Al. I. Cuza" University of Iasi, Faculty of Chemistry, Carol I Bd. 11, 700506 Iasi, Romania
| | - Maria Marinela Lazar
- "Petru Poni" Institute of Macromolecular Chemistry, "Mihai Dima" Department of Functional Polymers, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
| | - Maria Ignat
- "Al. I. Cuza" University of Iasi, Faculty of Chemistry, Carol I Bd. 11, 700506 Iasi, Romania; "Petru Poni" Institute of Macromolecular Chemistry, "Mihai Dima" Department of Functional Polymers, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
| | - Ionel Adrian Dinu
- "Petru Poni" Institute of Macromolecular Chemistry, "Mihai Dima" Department of Functional Polymers, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
| | - Ecaterina Stela Dragan
- "Petru Poni" Institute of Macromolecular Chemistry, "Mihai Dima" Department of Functional Polymers, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania
| | - Maria Valentina Dinu
- "Petru Poni" Institute of Macromolecular Chemistry, "Mihai Dima" Department of Functional Polymers, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania.
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Dragan ES, Loghin DFA. Fabrication and characterization of composite cryobeads based on chitosan and starches-g-PAN as efficient and reusable biosorbents for removal of Cu2+, Ni2+, and Co2+ ions. Int J Biol Macromol 2018; 120:1872-1883. [DOI: 10.1016/j.ijbiomac.2018.10.007] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/29/2018] [Accepted: 10/01/2018] [Indexed: 12/11/2022]
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Kim J, Hyun S. Soil attenuation of the seepage potential of metallic elements (Cu, Zn, As(V), Cd, and Pb) at abandoned mine sites: A batch equilibrium sorption and seepage column study. JOURNAL OF HAZARDOUS MATERIALS 2017; 339:292-300. [PMID: 28658638 DOI: 10.1016/j.jhazmat.2017.05.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/24/2017] [Accepted: 05/27/2017] [Indexed: 06/07/2023]
Abstract
Soil attenuation of off-site leaching potential of metallic elements at the two abandoned mine sites was investigated using batch sorption and layered column studies. In batch study, the leachate concentration-specific sorption (Kd*) by downgradient clean soils was in the order of Pb>Cu>Cd>Zn>As for DY site and Pb>As>Cu>Cd>Zn for BS site. In the layered (mine+clean) soil column, element elution was significantly reduced (e.g., no initial flush, retarded peak arrival, and lower peak concentration) while sulfate elution can be an indicator of the dissolution of sulfur-bearing minerals in mine soils. The greatest reduction was observed for Pb and Cu while the lowest was for Cd (2-19%) and Zn (6-51%), consistent with the batch data. Both the reduced elution at slow seepage and concentration drop after flow interruption support the time-limited propensity. In column segments, the sorptive elements (Cu, Pb, and As) were dominantly found in the inlet while less sorptive ones (Zn and Cd) in the outlet. Both batch and column data suggest that the element leaching with mine leachate movement can be greatly attenuated by the interactions with the surrounding downgradient soil during the seepage process.
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Affiliation(s)
- Juhee Kim
- Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841 South Korea
| | - Seunghun Hyun
- Department of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841 South Korea.
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Sydow M, Chrzanowski Ł, Cedergreen N, Owsianiak M. Limitations of experiments performed in artificially made OECD standard soils for predicting cadmium, lead and zinc toxicity towards organisms living in natural soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 198:32-40. [PMID: 28500914 DOI: 10.1016/j.jenvman.2017.04.092] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/25/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Development of comparative toxicity potentials of cationic metals in soils for applications in hazard ranking and toxic impact assessment is currently jeopardized by the availability of experimental effect data. To compensate for this deficiency, data retrieved from experiments carried out in standardized artificial soils, like OECD soils, could potentially be tapped as a source of effect data. It is, however, unknown whether such data are applicable to natural soils where the variability in pore water concentrations of dissolved base cations is large, and where mass transfer limitations of metal uptake can occur. Here, free ion activity models (FIAM) and empirical regression models (ERM, with pH as a predictor) were derived from total metal EC50 values (concentration with effects in 50% of individuals) using speciation for experiments performed in artificial OECD soils measuring ecotoxicological endpoints for terrestrial earthworms, potworms, and springtails. The models were validated by predicting total metal based EC50 values using backward speciation employing an independent set of natural soils with missing information about ionic composition of pore water, as retrieved from a literature review. ERMs performed better than FIAMs. Pearson's r for log10-transformed total metal based EC50s values (ERM) ranged from 0.25 to 0.74, suggesting a general correlation between predicted and measured values. Yet, root-mean-square-error (RMSE) ranged from 0.16 to 0.87 and was either smaller or comparable with the variability of measured EC50 values, suggesting modest performance. This modest performance was mainly due to the omission of pore water concentrations of base cations during model development and their validation, as verified by comparisons with predictions of published terrestrial biotic ligand models. Thus, the usefulness of data from artificial OECD soils for global-scale assessment of terrestrial ecotoxic impacts of Cd, Pb and Zn in soils is limited due to relatively small variability of pore water concentrations of dissolved base cations in OECD soils, preventing their inclusion in development of predictive models. Our findings stress the importance of considering differences in ionic composition of soil pore water when characterizing terrestrial ecotoxicity of cationic metals in natural soils.
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Affiliation(s)
- Mateusz Sydow
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965, Poznań, Poland.
| | - Łukasz Chrzanowski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965, Poznań, Poland
| | - Nina Cedergreen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Mikołaj Owsianiak
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Produktionstorvet 424, 2800, Kgs. Lyngby, Denmark
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Kim J, Nam SM, Hyun S. Removal and co-transport of Zn, As(V), and Cd during leachate seepage through downgradient mine soils: A batch sorption and column study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 551-552:571-578. [PMID: 26896586 DOI: 10.1016/j.scitotenv.2016.02.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 02/05/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
The removal of Zn, As(V), and Cd during the leachate seepage process was measured in single, binary, and ternary solute systems by batch sorption and 1-D column flow experiments, followed by a sequential extraction procedure (SEP). In single-solute systems, sorption (Kd(⁎)) occurred in the order of As(V)>Zn≫Cd, and this sequence did not change in the presence of other solutes. In multi-solute systems, the sorption of Zn (~20%) and Cd (~27%) was enhanced by As(V), while Zn and Cd suppressed the sorption of each other. In all cases, As(V) sorption was not affected by the cations, indicating that As(V) is prioritized by sorption sites to a much greater degree than Zn and Cd. Element retention by column soils was strongly correlated (r(2)=0.77) with Kd(⁎). Across column segments, mass retention was in the order of inlet (36-54%)>middle (26-35%)>outlet (20-31%), except for Cd in the Zn-Cd binary system. The result of SEP revealed that most of the retained Cd (98-99%) and Zn (56-71%) was in the labile fraction (e.g., the sum of F1 and F2) while only 9-12% of As(V) was labile and most (>55%) was specifically adsorbed to Fe/Al oxides. Plots of the labile fraction (f(labile)) and the fast sorption fraction (f(fast)) suggested that the kinetics of specific As(V) sorption occur rapidly (f(fast)>f(labile)), whereas labile Zn and Cd sorption occurs slowly (f(labile)>f(fast)), indicating the occurrence of kinetically limited labile sorption sites, probably due to Zn-Cd competition. In conclusion, the element leaching potential of mine leachate can be greatly attenuated during downgradient soil seepage. However, when assessing the soil attenuation process, the impact of sorption competitors and the lability of adsorbed elements should first be considered.
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Affiliation(s)
- Juhee Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Seung Mo Nam
- Korea Testing and Research Institute, Gyeonggi-do, Republic of Korea
| | - Seunghun Hyun
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea.
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Owsianiak M, Holm PE, Fantke P, Christiansen KS, Borggaard OK, Hauschild MZ. Assessing comparative terrestrial ecotoxicity of Cd, Co, Cu, Ni, Pb, and Zn: The influence of aging and emission source. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2015; 206:400-410. [PMID: 26253314 DOI: 10.1016/j.envpol.2015.07.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/16/2015] [Accepted: 07/17/2015] [Indexed: 06/04/2023]
Abstract
Metal exposure to terrestrial organisms is influenced by the reactivity of the solid-phase metal pool. This reactivity is thought to depend on the type of emission source, on aging mechanisms that are active in the soil, and on ambient conditions. Our work shows, that when controlling for soil pH or soil organic carbon, emission source occasionally has an effect on reactivity of Cd, Co, Cu, Ni, Pb and Zn emitted from various anthropogenic sources followed by aging in the soil from a few years to two centuries. The uncertainties in estimating the age prevent definitive conclusions about the influence of aging time on the reactivity of metals from anthropogenic sources in soils. Thus, for calculating comparative toxicity potentials of man-made metal contaminations in soils, we recommend using time-horizon independent accessibility factors derived from source-specific reactive fractions.
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Affiliation(s)
- Mikołaj Owsianiak
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Produktionstorvet, Building 424, DK-2800 Kgs. Lyngby, Denmark.
| | - Peter E Holm
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark
| | - Peter Fantke
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Produktionstorvet, Building 424, DK-2800 Kgs. Lyngby, Denmark
| | - Karen S Christiansen
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark
| | - Ole K Borggaard
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark
| | - Michael Z Hauschild
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Produktionstorvet, Building 424, DK-2800 Kgs. Lyngby, Denmark
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Horst MF, Alvarez M, Lassalle VL. Removal of heavy metals from wastewater using magnetic nanocomposites: Analysis of the experimental conditions. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1086801] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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