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Fernández-Marchante CM, Vieira Dos Santos E, Souza FL, Martínez-Huitle CA, Rodríguez-Gómez A, Lobato J, Rodrigo MA. Environmental impact assessment of the electrokinetic adsorption barriers to remove different herbicides from agricultural soils. Sci Total Environ 2024; 927:172287. [PMID: 38593877 DOI: 10.1016/j.scitotenv.2024.172287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 03/15/2024] [Accepted: 04/05/2024] [Indexed: 04/11/2024]
Abstract
In this study, the sustainability of the electrokinetic remediation soil flushing (EKSFs) process integrated without and with adsorption barriers (EKABs) have been evaluated for the treatment of four soils contaminated with Atrazine, Oxyfluorfen, Chlorosulfuron and 2,4-D. To this purpose, the environmental effects of both procedures (EKSFs and EKABs) have been determined through a life cycle assessment (LCA). SimaPro 9.3.0.3 was used as software tool and Ecoinvent 3.3 as data base to carry out the inventory of the equipment of each remediation setup based on experimental measurements. The environmental burden was quantified using the AWARE, USEtox, IPPC, and ReCiPe methods into 3 Endpoint impact categories (and damage to human health, ecosystem and resources) and 7 Midpoints impact categories (water footprint, global warming potential, ozone depletion, human toxicity (cancer and human non-cancer), freshwater ecotoxicity and terrestrial ecotoxicity). In general terms, the energy applied to treatment (using the Spanish energy mix) was the parameter with the greatest influence on the carbon footprint, ozone layer depletion and water footprint accounting for around 70 % of the overall impact contribution. On the other hand, from the point of view of human toxicity and freshwater ecotoxicity of soil treatments with 32 mg kg-1 of the different pesticides, the EKSF treatment is recommended for soils with Chlorosulfuron. In this case, the carbon footprint and water footprint reached values around 0.36 kg of CO2 and 114 L of water per kg of dry soil, respectively. Finally, a sensitivity analysis was performed assuming different scenarios.
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Affiliation(s)
- C M Fernández-Marchante
- Department of Chemical Engineering, Universidad de Castilla-La Mancha, Campus Universitario s/n, Ciudad Real 13071, Spain.
| | - E Vieira Dos Santos
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP 59078-970 Natal, Rio Grande do Norte, Brazil
| | - F L Souza
- São Carlos Institute of Chemistry, University of São Paulo (USP), Trabalhador São-carlense street 400, SP, São Carlos 13566-590, Brazil
| | - C A Martínez-Huitle
- Renewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, CEP 59078-970 Natal, Rio Grande do Norte, Brazil
| | - A Rodríguez-Gómez
- Department of Chemical Engineering, Universidad de Castilla-La Mancha, Campus Universitario s/n, Ciudad Real 13071, Spain
| | - J Lobato
- Department of Chemical Engineering, Universidad de Castilla-La Mancha, Campus Universitario s/n, Ciudad Real 13071, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Universidad de Castilla-La Mancha, Campus Universitario s/n, Ciudad Real 13071, Spain
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Arias AN, Barbosa Segundo ID, dos Santos EV, Martínez-Huitle C, Lobato J, Rodrigo MA. Direct Electro-oxidation of H2S Gas in a Membrane Electrode Assembly Cell (MEA): A Proof of Concept. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Arias AN, Granados-Fernández R, Fernández-Marchante C, Lobato J, Rodrigo MA. Influence of current density and inlet gas flow in the treatment of gaseous streams polluted with benzene by electro-absorption. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Rodríguez-Peña M, Barrios Pérez J, Lobato J, Saez C, Barrera-Díaz C, Rodrigo M. Scale-up in PEM electro-ozonizers for the degradation of organics. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Fernández-Marchante CM, Souza FL, Millán M, Lobato J, Rodrigo MA. Can the green energies improve the sustainability of electrochemically-assisted soil remediation processes? Sci Total Environ 2022; 803:149991. [PMID: 34482137 DOI: 10.1016/j.scitotenv.2021.149991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/30/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
The green powering of electrochemically-assisted soil remediation processes had been strongly discouraged. Low remediation efficiencies have been reported as a consequence of the reversibility of the transport processes when no power is applied to the electrodes, due to the intermittent powering of renewable sources. However, it has been missed a deeper evaluation from the environmental point of view. This work goes further and seeks to quantify, using life cycle assessment tools, the environmental impacts related to the electro-kinetic treatments powered by different sources: grid (Spanish energy mix), photovoltaic and wind sources. The global warming potential and the ozone depletion showed higher environmental impacts in case of using green energies, associated with the manufacturing of the energy production devices. In contrast to that, results pointed out the lowest water consumption for the treatment powered with solar panels. The huge water requirements to produce energy, considering a Spanish energy mix, drop the sustainability of this powering strategy in terms of water footprint. Regarding toxicities, the pollutant toxicity was highly got rid of after 15 days of treatment, regardless the powering source used. Nevertheless, the manufacturing of energy and green energy production devices has a huge impact into the toxicity of the remediation treatments, increasing massively the total toxicity of the process, being this effect less prominent by the electro-kinetic treatment solar powered. In view of the overall environmental impact assessed, according to mid and endpoint impact categories, it can be claimed that, despite the high energy requirements and affectation to the global warming potential, the use of solar power is a more sustainable alternative to remediate polluted soils by electrochemical techniques.
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Affiliation(s)
- C M Fernández-Marchante
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.
| | - F L Souza
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M Millán
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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6
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Isidro J, Sáez C, Llanos J, Lobato J, Cañizares P, Matthée T, Rodrigo MA. Adapting the low-cost pre-disinfection column PREDICO for simultaneous softening and disinfection of pore water. Chemosphere 2022; 287:132334. [PMID: 34563766 DOI: 10.1016/j.chemosphere.2021.132334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/17/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
In previous works, a low-cost predisinfection column that combined coagulation-flocculation and GAC filtration was proposed for combination with electrodisinfection in the successful treatment of highly faecal polluted surface water. In this work, this column is adapted for the treatment of pore water by transforming the coagulation chamber into a chemical reactor with lime and replacing the GAC of the filter with ion exchange resins. This adapted system can soften water, remove nitrate and condition water for very efficient electrochemical disinfection, where 4 logs and 3 logs in the removal of E. coli and P. aeruginosa, respectively, were reached using commercial electrochemical cells, i.e., CabECO ® or MIKROZON®. The availability and low cost of the technology are strong points for usage in poor areas of developing countries.
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Affiliation(s)
- J Isidro
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - C Sáez
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain.
| | - J Llanos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - J Lobato
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - T Matthée
- CONDIAS GmbH, Fraunhoferstraße 1b, 25524, Itzehoe, Germany
| | - M A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
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Escalona-Durán F, Muñoz-Morales M, Fernández-Marchante C, Lobato J, Martínez-Huitle C, Rodrigo M. Modelling electro-scrubbers for removal of VOCs. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Millán M, García-Orozco VM, Lobato J, Fernández-Marchante CM, Roa-Morales G, Linares-Hernández I, Natividad R, Rodrigo MA. Toward more sustainable photovoltaic solar electrochemical oxidation treatments: Influence of hydraulic and electrical distribution. J Environ Manage 2021; 285:112064. [PMID: 33588169 DOI: 10.1016/j.jenvman.2021.112064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/08/2021] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Powering electrochemical technologies with renewable energies is a promising way to get more sustainable environmental remediation techniques. However, the operational conditions of those processes must be optimized to undergo fast and efficient treatments. In this work, the influence of electrical and hydraulic connections in the performance of a set of two electrolyzers directly powered by photovoltaic panels was evaluated. Despite both electrolyzers were assembled using the same electrode material, they showed different performances. Results indicate that the electrolyzer with higher ohmic resistance and higher overpotential attained a greater production of oxidant species, being produced under the most efficient strategy around 4.8 and 15.1 mmol of oxidants per Ah by electrolyzer 1 and 2, respectively. Nevertheless, an excess of oxidant production because of an inefficient energy management, led to low removal efficiencies as a consequence of a waste of energy into undesirable reactions. Regarding the hydraulic distribution of wastewater between the cells, it was found to influence on the total remediation attained, being the serial connection 2.5 and 1.8 more efficient than a parallel wastewater distribution under series and parallel electrical strategies, respectively. Regarding electrical strategies, parallel connections maximize the use of power produced by the photovoltaic panels. Furthermore, this allows the system to work under lower current densities, reducing the mass transfer limitations. Considering both advantages, a hydraulic connection of the cells in series and an electrical connection in parallel was found to reach the highest specific removal of pollutant, 2.52 mg clopyralid (Wh)-1. Conversely, the opposite strategy (parallel hydraulic connection-series electrical connection) showed the lowest remediation ratio, 0.48 mg clopyralid (Wh)-1. These results are important to be considered in the design of electrolytic treatments of waste directly powered by photovoltaic panels, because they show the way to optimize the cells stack layout in full-scale applications, exhibiting significant impact on the sustainability of the electrochemical application.
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Affiliation(s)
- M Millán
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - V M García-Orozco
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Toluca-Atlacomulco Road km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - J Lobato
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - C M Fernández-Marchante
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - G Roa-Morales
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Toluca-Atlacomulco Road km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - I Linares-Hernández
- Instituto Interamericano de Tecnología y Ciencias del Agua (IITCA). Autonomous University of the State of Mexico, Km.14.5, carretera Toluca-Atlacomulco, C.P 50200, Toluca, Estado de México, Mexico
| | - R Natividad
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Toluca-Atlacomulco Road km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain.
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9
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Fernández-Marchante CM, Souza FL, Millán M, Lobato J, Rodrigo MA. Does intensification with UV light and US improve the sustainability of electrolytic waste treatment processes? J Environ Manage 2021; 279:111597. [PMID: 33168294 DOI: 10.1016/j.jenvman.2020.111597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 05/03/2023]
Abstract
This work aims to assess the influence of ultrasounds (US) application or ultraviolet (UV) light irradiation on the efficiency and sustainability of the treatment of wastes by conductive diamond electrochemical oxidation (CDEO). To do this, a life cycle assessment (LCA) is carried out in order to quantify the environmental impacts of the intensified CDEO processes. Inventories of three bench scale remediation plants (CDEO, Sono-CDEO and Photo-CDEO) in which the different technologies are implemented are performed by means of Ecoinvent 3.3 data base. AWARE, USEtox, IPPC and ReCiPe methodologies are used to quantify the environmental burden into 5 midpoint (water footprint, global warming 100a, ozone layer depletion, human toxicity, freshwater ecotoxicity) and 17 endpoint impact categories. Photo-CDEO attains the faster and more efficient removal in terms of energy consumed. All impact categories are lower in the case in which UV light irradiation is coupled to the CDEO treatment, particularly if the electrolyte does not contain chloride anions. From the point of view of toxicity and ecotoxicity, it is essential to achieve a complete mineralization, because of the intermediates generated into wastes containing chloride anions can become more hazardous than the initial pesticide. The operation of these technologies at large current densities shows positive results from the sustainability point of view, despite the huge environmental impact related to the energy production. Data notice that almost a 99.0% of the total global warming potential is mainly due to the electricity required during the electrochemical treatment, being higher by the sono and photo CDEO treatments because of the use of additional devices. Nevertheless, this issue can be overcome by means of using renewable energies as power sources of these remediation treatments. According to results, it can be claimed that the electrochemical technologies may successfully compete with other AOPs in terms of sustainability.
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Affiliation(s)
- C M Fernández-Marchante
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071, Ciudad Real, Spain.
| | - F L Souza
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071, Ciudad Real, Spain
| | - M Millán
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071, Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071, Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071, Ciudad Real, Spain
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10
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Fernández-Marchante CM, Souza FL, Millán M, Lobato J, Rodrigo MA. Improving sustainability of electrolytic wastewater treatment processes by green powering. Sci Total Environ 2021; 754:142230. [PMID: 33254883 DOI: 10.1016/j.scitotenv.2020.142230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/18/2020] [Accepted: 09/03/2020] [Indexed: 05/03/2023]
Abstract
This work focuses on the evaluation of the impact of powering electrolytic wastewater treatment processes with grid or renewable energy on the sustainability of this electrochemical remediation technology. To face this goal, it was performed an inventory of three bench-scale plants made up by the same treatment technology but powered from different supplies: connected to grid and directly coupled with solar photovoltaic panels or a wind turbine. Results show that the powering mode can significantly affect the environmental risks of the treatment, not only in terms of electricity demand but also on the formation of intermediates, which are more important in the cases in which the intensity profile varied. A life cycle assessment (LCA) is carried out in order to quantify the environmental impacts of green powering electrolytic wastewater treatment processes. Ecoinvent 3.3 data base, AWARE, USEtox, IPPC and ReCiPe methodologies are used to quantify the environmental burden into 5 midpoint (water footprint, global warming 100a, ozone layer depletion, human toxicity, freshwater ecotoxicity) and 17 endpoint impact categories. All impact categories are higher in the case in which the supplied power cames from a electricity grid mix. For the removal of 0.1 g 2,4-dichlorophenoxyacetic acid (2,4D) per liter (functional unit) of treated wastewater releases 0.14 kg CO2 eq. If the energy is provided by a wind turbine or a solar panel the processes emit 0.020 kg CO2 eq and 0.019 kg CO2 eq, respectively. A comparison of the impact based on the grid mix used in different countries is also made, which has pointed out the relevance of this input on the sustainability of the environmental electrochemical technologies.
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Affiliation(s)
- C M Fernández-Marchante
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071 Ciudad Real, Spain.
| | - F L Souza
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071 Ciudad Real, Spain
| | - M Millán
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071 Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071 Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, University of Castilla La Mancha, Campus Universitario s/n. 13071 Ciudad Real, Spain
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11
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Isidro J, Brackemeyer D, Sáez C, Llanos J, Lobato J, Cañizares P, Matthée T, Rodrigo M. Electro-disinfection with BDD-electrodes featuring PEM technology. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117081] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Carvela M, Lobato J, Rodrigo MA. Storage of energy using a gas-liquid H 2/Cl 2 fuel cell: A first approach to electrochemically-assisted absorbers. Chemosphere 2020; 254:126795. [PMID: 32334253 DOI: 10.1016/j.chemosphere.2020.126795] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 04/09/2020] [Accepted: 04/11/2020] [Indexed: 06/11/2023]
Abstract
In this work, the use in fuel cell mode of three electro-absorbers is evaluated for the chloralkaline process and performance is compared with that of a conventional PEMFC operated at the same operation conditions (room temperature). To do this, four cells have been in-house manufactured and compared, in order to determine which electrolyte (solution containing the active species or the membrane) is the best and which is the influence of the absorption stage on the operation of the cell. Because of the high solubility of chlorine, only the hydrogen absorption has been considered in order to evaluate relevant differences in the performance. Results demonstrate that design of the cell has a superb significance on the performances obtained. Cells with membrane-electrode assemblies are more efficient than those in which the membrane is used only as an electrodic compartment separator and utilization of devices which produce tiny bubbles of gas into the electrolyte is also very advantageous in order to obtain higher efficiencies. Results are of a great significance for the design of electro-absorbers and this paper is a first approach to face the design of reversible electrochemical cells for the chloralkaline process.
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Affiliation(s)
- M Carvela
- University of Castilla-La Mancha, Faculty of Chemical Sciences & Technologies, Chemical Engineering Department, Av. Camilo José Cela, 12, 13071, Ciudad Real, Spain
| | - J Lobato
- University of Castilla-La Mancha, Faculty of Chemical Sciences & Technologies, Chemical Engineering Department, Av. Camilo José Cela, 12, 13071, Ciudad Real, Spain
| | - M A Rodrigo
- University of Castilla-La Mancha, Faculty of Chemical Sciences & Technologies, Chemical Engineering Department, Av. Camilo José Cela, 12, 13071, Ciudad Real, Spain.
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13
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Millán M, Bucio-Rodríguez PY, Lobato J, Fernández-Marchante CM, Roa-Morales G, Barrera-Díaz C, Rodrigo MA. Strategies for powering electrokinetic soil remediation: A way to optimize performance of the environmental technology. J Environ Manage 2020; 267:110665. [PMID: 32421682 DOI: 10.1016/j.jenvman.2020.110665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/26/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
The electro-kinetic remediation of soils using different powering strategies has been studied, in order to clarify which is the best strategy to couple solar powering with this remediation technology, in a context of developing more sustainable electrochemical remediation technologies. Direct powering from photovoltaic panels (Case a), application of constant electric fields with the same average value of Case a (Case b) and application of constant specific power with the same average value of Case a (Case c) have been compared. Results show an outstanding influence of the powering strategy on the removal efficiency of clopyralid (model of herbicide used in this work). The direct use of solar power profiles obtained the lowest removal efficiencies, which contrasts with the higher expected sustainability of this powering strategy. Reversion of pollutant transport overnight and extreme electric field values at noon help to explain the lower efficiency of this strategy. Evaporation mechanisms are promoted by operating at extreme large electric fields. In addition, harsher conditions lead to a higher negative soil affectation in terms of regions affected by extreme pHs, water contents and/or conductivities and to lower specific pollutant removals. Therefore, maximum efficiencies were found for Case b (constant electric potential gradient) with a total removal over 110 g kWh-1 and only a slight affectation into the final soil properties.
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Affiliation(s)
- M Millán
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - P Y Bucio-Rodríguez
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Carretera Toluca-Atlacomulco km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - J Lobato
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - C M Fernández-Marchante
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain
| | - G Roa-Morales
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Carretera Toluca-Atlacomulco km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - C Barrera-Díaz
- Autonomous University of the State of Mexico, Joint Center for Research in Sustainable Chemistry (CCIQS UAEM-UNAM), Carretera Toluca-Atlacomulco km 14.5, Campus UAEMéx "El Rosedal", Toluca, State of Mexico, 50200, Mexico
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Av. Camilo Jose Cela n 12, 13071, Ciudad Real, Spain.
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14
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Isidro J, Brackemeyer D, Sáez C, Llanos J, Lobato J, Cañizares P, Matthée T, Rodrigo MA. Testing the use of cells equipped with solid polymer electrolytes for electro-disinfection. Sci Total Environ 2020; 725:138379. [PMID: 32278177 DOI: 10.1016/j.scitotenv.2020.138379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
This work focuses on disinfection of water using electrolysis with boron doped diamond (BDD) coatings and faces this challenge by comparing the performance of two different cells manufactured by CONDIAS GmbH (Izehoe, Germany): CONDIACELL® ECWP and CabECO cells. They are both equipped with diamond electrodes, but the mechanical design is completely different, varying not only by geometry but also by the flow conditions. ECWP is a flow-through cell with perforated electrodes while the CabECO cell is a zero-gap cell with a proton exchange membrane as a solid polymer electrolyte (SPE) separating the anode and cathode. At 0.02 Ah dm-3 both cells attain around 3-5 logs pathogen removal, but design and sizing parameters give an advantage to the CabECO: it can minimize the production of chlorates and perchlorates when operating in a single-pass mode, which becomes a really remarkable point. In this paper, we report tests in which we demonstrate this outstanding performance and we also explain the differences observed in the two cells operating with the same water.
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Affiliation(s)
- J Isidro
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - D Brackemeyer
- CONDIAS GmbH, Fraunhoferstraße 1b, 25524 Itzehoe, Germany
| | - C Sáez
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain.
| | - J Llanos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - J Lobato
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - T Matthée
- CONDIAS GmbH, Fraunhoferstraße 1b, 25524 Itzehoe, Germany
| | - M A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
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Isidro J, Brackemeyer D, Sáez C, Llanos J, Lobato J, Cañizares P, Matthée T, Rodrigo MA. How to avoid the formation of hazardous chlorates and perchlorates during electro-disinfection with diamond anodes? J Environ Manage 2020; 265:110566. [PMID: 32275236 DOI: 10.1016/j.jenvman.2020.110566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/24/2020] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
This work focuses on disinfection of water using electrolysis with diamond coatings avoiding or minimizing the formation of hazardous chlorates and perchlorates using a special type of commercial cells designed by CONDIAS (Itzehoe, Germany) in two different sizes: the CabECO and the MIKROZON cells. In these cells, the electrolyte that separates the anode and cathode is a proton exchange membrane. This helps to minimize the production of perchlorate and this behavior is enhanced in the smallest cell for which the very low contact times between the electrodes and the water allows to avoid the production of perchlorates when operating in a single-pass mode, which becomes a really remarkable point. In this paper, we report tests in which we demonstrate this outstanding performance and we also explain the differences observed in the two cells operating with the same water.
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Affiliation(s)
- J Isidro
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - D Brackemeyer
- CONDIAS GmbH, Fraunhoferstraße 1b, 25524, Itzehoe, Germany
| | - C Sáez
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - J Llanos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain.
| | - J Lobato
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
| | - T Matthée
- CONDIAS GmbH, Fraunhoferstraße 1b, 25524, Itzehoe, Germany
| | - M A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005, Ciudad Real, Spain
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16
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Millán M, Lobato J, Cañizares P, Rodrigo M. Prediction and management of solar energy to power electrochemical processes for the treatment of wastewater effluents. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135594] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Coutinho R, Lobato J, Esteves S, Cabeçadas J, Gomes da Silva M. Clinical risk scores do not accurately identify a very high risk population with diffuse large B cell lymphoma-an analysis of 386 Portuguese patients. Ann Hematol 2019; 98:1937-1946. [PMID: 30949752 DOI: 10.1007/s00277-019-03676-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 03/17/2019] [Indexed: 12/24/2022]
Abstract
The identification of high-risk patients deserving alternative first-line treatments to R-CHOP is a research priority in diffuse large B cell lymphoma (DLBCL). Despite the increasing recognition of biological features underlying aggressive behavior, clinical scores remain the basis for prognostic evaluation and treatment stratification in DLBCL. We performed a retrospective analysis of patients with DLBCL uniformly treated with immunochemotherapy with the aim of assessing the discriminative power of the NCCN international prognostic index (IPI) and the GELTAMO-IPI scores in risk group stratification and compared them with the IPI. Additionally, we investigated if bulky disease, gender, beta-2 microglobulin (β2m), body mass index, and B-symptoms have independent prognostic impact. We confirmed the discriminative ability of the three prognostic scores in terms of progression-free survival and overall survival and found that the NCCN-IPI performs better in the identification of a high-risk population compared to the IPI and the GELTAMO scores. In an attempt to improve the prognostic power of the NCCN-IPI we analyzed additional clinical variables. Bulky disease and elevated β2m were found to be independent predictors of prognosis when controlling for the NCCN-IPI risk groups. However, they seem to bring no incremental power to the latter in the identification of poor outcome patients. We support the use of the NCCN-IPI for the clinical identification of high-risk patients in DLBCL. Future studies to unravel the biological heterogeneity within NCCN-IPI groups are needed to improve risk prediction and design targeted therapies for poor prognosis patients.
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Affiliation(s)
- Rita Coutinho
- Department of Hematology, Centro Hospitalar Universitário do Porto, Porto, Portugal.
| | - J Lobato
- Department of Hematology, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E., Lisbon, Portugal
| | - S Esteves
- Clinical Research Unit, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E., Lisbon, Portugal
| | - J Cabeçadas
- Department of Pathology, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E., Lisbon, Portugal
| | - M Gomes da Silva
- Department of Hematology, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E., Lisbon, Portugal
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Eloy L, Pötter L, Lobato J, Bremm C, Laca E. PSXVII-20 Reproductive performance of cattle: a meta-analytical approach. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L Eloy
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - L Pötter
- Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - J Lobato
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - C Bremm
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - E Laca
- University of California - Davis,Davis, CA, United States
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19
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Fernandez-Marchante CM, Asensio Y, Lobato J, Villaseñor J, Cañizares P, Rodrigo MA. Influence of hydraulic retention time and carbon loading rate on the production of algae. J Biotechnol 2018; 282:70-79. [PMID: 29990569 DOI: 10.1016/j.jbiotec.2018.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 06/25/2018] [Accepted: 07/06/2018] [Indexed: 11/16/2022]
Abstract
This paper is focused on the assessment of the production of algae in batch bioreactors. Hydraulic retention time, carbon loading rate and light color were the inputs of the study and algae production the main output. Bioreactors were operated in semi-continuous mode and tests lasted two months, more than two times the period required to meet a steady-state response. This steady-state was verified with plateau responses in both, soluble parameters and suspended solids. Results points out the great relevance of temperature. Likewise, they show that green light improves the production of algae, as well as long HRT and high CLR. Maximum production rates attained were in the range 4-14 mg d-1 L-1. The ratio COD /TSS for this biofuel was almost constant (3.13 mg COD mg-1 TSS) but the quality of the product obtained in terms of the Mean Oxidation State of Carbon is completely different. Longer HRT leads to lower MOSC and hence to potentially more valuable fuels.
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Affiliation(s)
- C M Fernandez-Marchante
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - Y Asensio
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J Villaseñor
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.
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20
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Isidro J, Llanos J, Sáez C, Lobato J, Cañizares P, Rodrigo MA. Pre-disinfection columns to improve the performance of the direct electro-disinfection of highly faecal-polluted surface water. J Environ Manage 2018; 222:135-140. [PMID: 29807263 DOI: 10.1016/j.jenvman.2018.05.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 05/12/2018] [Indexed: 05/03/2023]
Abstract
This work presents the design and evaluation of a new concept of pre-disinfection treatment that is especially suited for highly polluted surface water and is based on the combination of coagulation-flocculation, lamellar sedimentation and filtration into a single-column unit, in which the interconnection between treatments is an important part of the overall process. The new system, the so-called PREDICO (PRE-DIsinfection Column) system, was built with low-cost consumables from hardware stores (in order to promote in-house construction of the system in poor countries) and was tested with a mixture of 20% raw wastewater and 80% surface water (in order to simulate an extremely bad situation). The results confirmed that the PREDICO system helps to avoid fouling in later electro-disinfection processes and attains a remarkable degree of disinfection (3-4 log units), which supplements the removal of pathogens attained by the electrolytic cell (more than 4 log units). The most important sizing parameters for the PREDICO system are the surface loading rate (SLR) and the hydraulic residence time (HRT); SLR values under 20 cm min-1 and HRT values over 13.6 min in the PREDICO system are suitable to warrant efficient performance of the system.
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Affiliation(s)
- J Isidro
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - J Llanos
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - C Sáez
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - J Lobato
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - P Cañizares
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain
| | - M A Rodrigo
- Chemical Engineering Department, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Campus Universitario s/n, 13005 Ciudad Real, Spain.
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21
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Asensio Y, Fernandez-Marchante C, Lobato J, Cañizares P, Rodrigo M. Influence of the ion-exchange membrane on the performance of double-compartment microbial fuel cells. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.06.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Asensio Y, Mansilla E, Fernandez-Marchante CM, Lobato J, Cañizares P, Rodrigo MA. Towards the scale-up of bioelectrogenic technology: stacking microbial fuel cells to produce larger amounts of electricity. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1101-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Asensio Y, Montes I, Fernandez-Marchante C, Lobato J, Cañizares P, Rodrigo M. Selection of cheap electrodes for two-compartment microbial fuel cells. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.12.045] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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24
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Asensio Y, Fernandez-Marchante CM, Lobato J, Cañizares P, Rodrigo MA. Influence of the fuel and dosage on the performance of double-compartment microbial fuel cells. Water Res 2016; 99:16-23. [PMID: 27130968 DOI: 10.1016/j.watres.2016.04.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 04/11/2016] [Accepted: 04/13/2016] [Indexed: 06/05/2023]
Abstract
This manuscript focuses on the evaluation of the use of different types and dosages of fuels in the performance of double-compartment microbial fuel cell equipped with carbon felt electrodes and cationic membrane. Five types of fuels (ethanol, glycerol, acetate, propionate and fructose) have been tested for the same organic load (5,000 mg L(-1) measured as COD) and for one of them (acetate), the range of dosages between 500 and 20,000 mg L(-1) of COD was also studied. Results demonstrate that production of electricity depends strongly on the fuel used. Carboxylic acids are much more efficient than alcohols or fructose for the same organic load and within the range 500-5,000 mg L(-1) of acetate the production of electricity increases linearly with the amount of acetate fed but over these concentrations a change in the population composition may explain a worse performance.
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Affiliation(s)
- Y Asensio
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - C M Fernandez-Marchante
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences & Technologies, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071, Ciudad Real, Spain.
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25
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Mateo S, Gonzalez del Campo A, Lobato J, Rodrigo M, Cañizares P, Fernandez-Morales F. Long-term effects of the transient COD concentration on the performance of microbial fuel cells. Biotechnol Prog 2016; 32:883-90. [DOI: 10.1002/btpr.2278] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 03/02/2016] [Indexed: 11/08/2022]
Affiliation(s)
- S. Mateo
- Chemical Engineering Dept., ITQUIMA; University of Castilla-La Mancha; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
| | - A. Gonzalez del Campo
- Chemical Engineering Dept., ITQUIMA; University of Castilla-La Mancha; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
| | - J. Lobato
- Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies; University of Castilla-La Mancha, Edificio Enrique Costa Novella; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
| | - M. Rodrigo
- Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies; University of Castilla-La Mancha, Edificio Enrique Costa Novella; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
| | - P. Cañizares
- Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies; University of Castilla-La Mancha, Edificio Enrique Costa Novella; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
| | - F.J. Fernandez-Morales
- Chemical Engineering Dept., ITQUIMA; University of Castilla-La Mancha; Avenida Camilo José Cela S/N Ciudad Real 13071 Spain
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Khadge S, Banu S, Bobosha K, van der Ploeg-van Schip JJ, Goulart IM, Thapa P, Kunwar CB, van Meijgaarden KE, van den Eeden SJF, Wilson L, Kabir S, Dey H, Goulart LR, Lobato J, Carvalho W, Bekele Y, Franken KLMC, Aseffa A, Spencer JS, Oskam L, Otttenhoff THM, Hagge DA, Geluk A. Longitudinal immune profiles in type 1 leprosy reactions in Bangladesh, Brazil, Ethiopia and Nepal. BMC Infect Dis 2015; 15:477. [PMID: 26510990 PMCID: PMC4625471 DOI: 10.1186/s12879-015-1128-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 09/18/2015] [Indexed: 12/30/2022] Open
Abstract
Background Acute inflammatory reactions are a frequently occurring, tissue destructing phenomenon in infectious- as well as autoimmune diseases, providing clinical challenges for early diagnosis. In leprosy, an infectious disease initiated by Mycobacterium leprae (M. leprae), these reactions represent the major cause of permanent neuropathy. However, laboratory tests for early diagnosis of reactional episodes which would significantly contribute to prevention of tissue damage are not yet available. Although classical diagnostics involve a variety of tests, current research utilizes limited approaches for biomarker identification. In this study, we therefore studied leprosy as a model to identify biomarkers specific for inflammatory reactional episodes. Methods To identify host biomarker profiles associated with early onset of type 1 leprosy reactions, prospective cohorts including leprosy patients with and without reactions were recruited in Bangladesh, Brazil, Ethiopia and Nepal. The presence of multiple cyto-/chemokines induced by M. leprae antigen stimulation of peripheral blood mononuclear cells as well as the levels of antibodies directed against M. leprae-specific antigens in sera, were measured longitudinally in patients. Results At all sites, longitudinal analyses showed that IFN-γ-, IP-10-, IL-17- and VEGF-production by M. leprae (antigen)-stimulated PBMC peaked at diagnosis of type 1 reactions, compared to when reactions were absent. In contrast, IL-10 production decreased during type 1 reaction while increasing after treatment. Thus, ratios of these pro-inflammatory cytokines versus IL-10 provide useful tools for early diagnosing type 1 reactions and evaluating treatment. Of further importance for rapid diagnosis, circulating IP-10 in sera were significantly increased during type 1 reactions. On the other hand, humoral immunity, characterized by M. leprae-specific antibody detection, did not identify onset of type 1 reactions, but allowed treatment monitoring instead. Conclusions This study identifies immune-profiles as promising host biomarkers for detecting intra-individual changes during acute inflammation in leprosy, also providing an approach for other chronic (infectious) diseases to help early diagnose these episodes and contribute to timely treatment and prevention of tissue damage. Electronic supplementary material The online version of this article (doi:10.1186/s12879-015-1128-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Saraswoti Khadge
- Mycobacterial Research Laboratories, Anandaban Hospital, Kathmandu, Nepal.
| | - Sayera Banu
- International Center for Diarrhoeal Disease Research Bangladesh, Dhaka, Bangladesh.
| | - Kidist Bobosha
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands. .,Armauer Hansen Research Institute, Addis Ababa, Ethiopia.
| | | | - Isabela M Goulart
- National Reference Center for Sanitary Dermatology and Leprosy, Faculty of Medicine, Federal University of Uberlandia, Minas Gerais, Brazil.
| | - Pratibha Thapa
- Mycobacterial Research Laboratories, Anandaban Hospital, Kathmandu, Nepal.
| | - Chhatra B Kunwar
- Mycobacterial Research Laboratories, Anandaban Hospital, Kathmandu, Nepal.
| | - Krista E van Meijgaarden
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands.
| | - Susan J F van den Eeden
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands.
| | - Louis Wilson
- International Center for Diarrhoeal Disease Research Bangladesh, Dhaka, Bangladesh.
| | - Senjuti Kabir
- International Center for Diarrhoeal Disease Research Bangladesh, Dhaka, Bangladesh.
| | - Hymonti Dey
- International Center for Diarrhoeal Disease Research Bangladesh, Dhaka, Bangladesh.
| | - Luiz R Goulart
- National Reference Center for Sanitary Dermatology and Leprosy, Faculty of Medicine, Federal University of Uberlandia, Minas Gerais, Brazil.
| | - Janaina Lobato
- National Reference Center for Sanitary Dermatology and Leprosy, Faculty of Medicine, Federal University of Uberlandia, Minas Gerais, Brazil.
| | - Washington Carvalho
- National Reference Center for Sanitary Dermatology and Leprosy, Faculty of Medicine, Federal University of Uberlandia, Minas Gerais, Brazil.
| | - Yonas Bekele
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia.
| | - Kees L M C Franken
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands.
| | - Abraham Aseffa
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia.
| | - John S Spencer
- Dept. of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, USA.
| | - Linda Oskam
- National Reference Center for Sanitary Dermatology and Leprosy, Faculty of Medicine, Federal University of Uberlandia, Minas Gerais, Brazil.
| | - Tom H M Otttenhoff
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands.
| | - Deanna A Hagge
- Mycobacterial Research Laboratories, Anandaban Hospital, Kathmandu, Nepal.
| | - Annemieke Geluk
- Dept. of Infectious Diseases, Leiden University Medical Center (LUMC), PO Box 9600, 2300 RC, Leiden, The Netherlands.
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Raschitor A, Soreanu G, Fernandez-Marchante CM, Lobato J, Cañizares P, Cretescu I, Rodrigo MA. Bioelectro-Claus processes using MFC technology: Influence of co-substrate. Bioresour Technol 2015; 189:94-98. [PMID: 25876228 DOI: 10.1016/j.biortech.2015.03.115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/19/2015] [Accepted: 03/25/2015] [Indexed: 06/04/2023]
Abstract
This work is focused on the removal of sulphide from wastewater using a two chamber microbial fuel cell, seeded with activated sludge and operated in semi-continuous mode. Two co-substrates were used in order to provide the system for carbon and nutrient source: actual urban wastewater and synthetic wastewater. Results show that sulphide is efficiency depleted (removals over 94%) and that electricity is efficiently produced (maximum power density is 150 mW m(-2)) meanwhile COD is also oxidised (removals higher than 60%). Sulphur and sulphate are obtained as the final products of the oxidation and final speciation depends on the type of co-substrate used. The start-up of the system is very rapid and production of electricity and polarisation curves do not depend on the co-substrate.
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Affiliation(s)
- A Raschitor
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - G Soreanu
- Faculty of Chemical Engineering and Environmental Protection, "Gh. Asachi" Technical University of Iasi, 73, Bd.D. Mangeron, 700050 Iasi, Romania
| | - C M Fernandez-Marchante
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J Lobato
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - P Cañizares
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - I Cretescu
- Faculty of Chemical Engineering and Environmental Protection, "Gh. Asachi" Technical University of Iasi, 73, Bd.D. Mangeron, 700050 Iasi, Romania
| | - M A Rodrigo
- Department of Chemical Engineering, Faculty of Chemical Sciences and Technologies, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain.
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Mateo S, Gonzalez del Campo A, Cañizares P, Lobato J, Rodrigo MA, Fernandez FJ. Bioelectricity generation in a self-sustainable Microbial Solar Cell. Bioresour Technol 2014; 159:451-454. [PMID: 24709531 DOI: 10.1016/j.biortech.2014.03.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 03/10/2014] [Accepted: 03/13/2014] [Indexed: 06/03/2023]
Abstract
The possibility to develop devices based on bioprocesses for solar energy harvesting is significant from the economic and environmental point of view. In this communication it has been demonstrated that such device can be can be made by controlling the equilibrium between photosynthetic and electrogenic cultures. This device is a membrane-less and mediator-free apparatus with a graphite plate anode and a stainless steel grid cathode with a steady electricity production of about 1 mV m(-2).
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Affiliation(s)
- S Mateo
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain
| | - A Gonzalez del Campo
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain
| | - P Cañizares
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain
| | - J Lobato
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain
| | - M A Rodrigo
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain
| | - F J Fernandez
- University of Castilla-La Mancha, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain.
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Reis EM, Araujo S, Lobato J, Neves AF, Costa AV, Gonçalves MA, Goulart LR, Goulart IMB. Mycobacterium leprae DNA in peripheral blood may indicate a bacilli migration route and high-risk for leprosy onset. Clin Microbiol Infect 2013; 20:447-52. [PMID: 24033793 DOI: 10.1111/1469-0691.12349] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/20/2013] [Accepted: 07/24/2013] [Indexed: 11/28/2022]
Abstract
Leprosy epidemiological studies have been restricted to Mycobacterium leprae DNA detection in nasal and oral mucosa samples with scarce literature on peripheral blood. We present the largest study applying quantitative real-time PCR (qPCR) for the detection of M. leprae DNA in peripheral blood samples of 200 untreated leprosy patients and 826 household contacts, with results associated with clinical and laboratory parameters. To detect M. leprae DNA a TaqMan qPCR assay targeting the M. leprae ML0024 genomic region was performed. The ML0024 qPCR in blood samples detected the presence of bacillus DNA in 22.0% (44/200) of the leprosy patients: 23.2% (16/69) in paucibacillary (PB), and 21.4% (28/131) in multibacillary (MB) patients. Overall positivity among contacts was 1.2% (10/826), with similar percentages regardless of whether the index case was PB or MB. After a follow-up period of 7 years, 26 contacts have developed leprosy. Comparing the results of healthy contacts with those that become ill, ML0024 qPCR positivity at the time of diagnosis of their index case represented an impressive 14.78-fold greater risk for leprosy onset (95% CI 3.6-60.8; p <0.0001). In brief, contacts with positive PCR in blood at diagnosis of index cases are at higher risk of later leprosy onset and this marker might be combined with other prognostic markers for management of contacts, which requires further studies.
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Affiliation(s)
- E M Reis
- National Reference Centre for Sanitary Dermatology and Leprosy, Clinic Hospital, Federal University of Uberlandia, Uberlandia; Post-Graduation Programme in Health Sciences, School of Medicine, Federal University of Uberlandia, Uberlandia
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Gómez Caamaño A, Morote J, Ledo Cepero M, Pesqueira D, Tabernero Á, Gómez Veiga F, Lorente J, Porras M, Lobato J, Ribal M, Planas J. Data from the spanish multicentre observational ANAMET study. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Fernandes F, Correia C, Nabais E, Fonseca V, Lobato J, Cunha G. P1.21 ARTERIAL DISTENSIBILITY IN YOUNG INDIVIDUALS – COMPARISON OF ARTERIAL DISTENSIBILITY THROUGH THE MEASUREMENT OF PULSE WAVE VELOCITY IN YOUNG SPORTSMEN VERSUS NON-SPORTSMEN. Artery Res 2012. [DOI: 10.1016/j.artres.2012.09.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Lobato J, Costa MP, De Melo Reis É, Gonçalves MA, Spencer JS, Brennan PJ, Goulart LR, Goulart IMB. Comparison of three immunological tests for leprosy diagnosis and detection of subclinical infection. LEPROSY REV 2011. [DOI: 10.47276/lr.82.4.389] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lobato J, Costa MP, Reis EDM, Gonçalves MA, Spencer JS, Brennan PJ, Goulart LR, Goulart IMB. Comparison of three immunological tests for leprosy diagnosis and detection of subclinical infection. LEPROSY REV 2011; 82:389-401. [PMID: 22439279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE Our aim was to compare the performance of three serological assays in leprosy patients and their household contacts utilising two quantitative ELISA tests using native PGL-I (PGL-1 ELISA), synthetic ND-O-HSA (ND-O-HSA ELISA), and the semi-quantitative lateral flow test (ML Flow). METHODS Comparisons among three immunological assays, PGL-I ELISA, ND-O-HSA ELISA, and ML Flow were performed in 154 leprosy patients, 191 household contacts and 52 health subjects. RESULTS The sensitivity results of the PGL-1, ND-O-HSA, and ML Flow were 68.83%, 63.84%, and 60.65%, respectively, with specificity of 98% for both ELISA assays. The native and synthetic PGL-I ELISA assays detected antibodies in 22.73% and 31.82% of the paucibacillary (PB) patients, respectively and the ML Flow test did not detect antibodies in this group. The ML Flow test was able to discriminate patients into PB or multibacillary (MB) forms, while the native PGL-I and ND-O-HSA was correlated with the bacillary load and the Ridley-Jopling clinical forms. In household contacts, the native PGL-I, ND-O-HSA, and ML Flow assays detected seropositivity of 25%, 17%, and 10%, respectively. CONCLUSIONS The use of ELISA and ML Flow tests are thus recommended as additional tools in the diagnosis and classification of the clinical forms, aiding in prescribing the correct treatment regimen to prevent subsequent nerve damage and disability, and besides, the PGL-I ELISA may be used to detect subclinical infection in leprosy.
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Affiliation(s)
- Janaina Lobato
- Universidade Federal de Uberlândia - Centro de Referência Nacional em Hanseníase Av. Aspirante Mega, 77 - Bairro Jaraguá, 38413-018 - Uberlândia, MG, Brazil
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Duthie MS, Hay MN, Rada EM, Convit J, Ito L, Oyafuso LKM, Manini MIP, Goulart IMB, Lobato J, Goulart LR, Carter D, Reed SG. Specific IgG antibody responses may be used to monitor leprosy treatment efficacy and as recurrence prognostic markers. Eur J Clin Microbiol Infect Dis 2011; 30:1257-65. [PMID: 21544695 DOI: 10.1007/s10096-011-1221-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 03/08/2011] [Indexed: 11/24/2022]
Abstract
Although curable, leprosy requires better diagnostic and prognostic tools to accompany therapeutic strategies. We evaluated the serum samples of leprosy patients from Venezuela and Brazil for reactivity against the specific recombinant proteins, ML0405 and ML2331, and the LID-1 fusion protein that incorporates both of these antigens. Antigen-specific IgG was highest in lepromatous leprosy patients (LL) and decreased across the disease spectrum, such that only a small subset of true tuberculoid patients (TT) tested positive. The impact of multidrug therapy (MDT) on these antibody responses was also examined. Several years after treatment, the vast majority of Venezuelan patients did not possess circulating anti-LID-1, anti-ML0405, and anti-ML2331 IgG, and the seropositivity of the remaining cases could be attributed to irregular treatment. At discharge, the magnitude and proportion of positive responses of Brazilian patients against the proteins and phenolic glycolipid (PGL)-I were lower for most of the clinical forms. The monthly examination of IgG levels in LL patient sera after MDT initiation indicated that these responses are significantly reduced during treatment. Thus, responses against these antigens positively correlate with bacillary load, clinical forms, and operational classification at diagnosis. Our data indicate that these responses could be employed as an auxiliary tool for the assessment of treatment efficacy and disease relapse.
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Affiliation(s)
- M S Duthie
- Infectious Disease Research Institute, 1124 Columbia St., Suite 400, Seattle, WA 98104, USA.
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Valverde JL, Lobato J, Fernández I, Marijuán L, Pérez-Mohedano S, Talero R. Reducción de cromo hexavalente en cementos usando sulfato ferroso mono y heptahidratado: eficacia y almacenabilidad. ACTA ACUST UNITED AC 2010. [DOI: 10.3989/mc.2005.v55.i279.197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Duthie MS, Goulart IMB, Reed SG, Lobato J, Goulart LR. Immunoglobulin G and M Detection for Leprosy Diagnosis (129.18). The Journal of Immunology 2009. [DOI: 10.4049/jimmunol.182.supp.129.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Leprosy is a curable disease that requires better diagnostic and prognostic tools to accompany preventive and therapeutic strategies. Circulating IgM antibodies against the M. leprae phenolic glycolipid-I (PGL-I) antigen have previously been used to assess humoral immunity. The presence of elevated titers of anti-PGL-I IgM reflects total bacterial load in the body; these antibodies, however, are generally low or absent in paucibacillary patients. Our objective was to compare 3 new recombinant antigens, ML0405, ML2331, and LID1 (comprising critical regions from ML0405 and ML2331), which recognize serum IgG, in comparison and in combination with PGL-I IgM. Serum samples were collected from 105 patients across the leprosy spectrum at the initial diagnosis and again after treatment. Patient positivity for LID1, ML0405, ML2331 and PGL-I tests was 67%, 62%, 65%, and 76%, respectively. A combination of the LID1 and PGL-1 antigens gave a positivity of 80%. After treatment, the ML0405 and PGL-I assays decreased their ELISA index values for all clinical forms, except for the LL form. Importantly, both antigens have been positively correlated with the bacillary load, clinical forms and the operational classification at diagnosis. Our results suggest that the combination of LID1 and PGL-I antigens, recognizing the IgG and IgM response, respectively, could be employed as an auxiliary tool for leprosy diagnosis.
This work was funded in part by American Leprosy Mission.
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Affiliation(s)
| | | | | | - Janaina Lobato
- 2National Reference Center of Leprosy, Uberlandia, Brazil
| | - Luiz R Goulart
- 2National Reference Center of Leprosy, Uberlandia, Brazil
- 3Institute of Genetics and Biochemistry, Laboratory of Nanobiotechnology, Uberlandia, Brazil
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Benetti AH, Schein FB, Santos TRD, Toniollo GH, Costa AJD, Mineo JR, Lobato J, Silva DADO, Gennari SM. Pesquisa de anticorpos anti-Neospora caninum em bovinos leiteiros, cães e trabalhadores rurais da região Sudoeste do Estado de Mato Grosso. RBPV 2009; 18 Suppl 1:29-33. [DOI: 10.4322/rbpv.018e1005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Accepted: 08/18/2009] [Indexed: 11/23/2022]
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Lobato J, Cañizares P, Rodrigo MA, Ruiz-López C, Linares JJ. Influence of the Teflon loading in the gas diffusion layer of PBI-based PEM fuel cells. J APPL ELECTROCHEM 2008. [DOI: 10.1007/s10800-008-9512-8] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cañizares P, Lobato J, Paz R, Rodrigo MA, Sáez C. Advanced oxidation processes for the treatment of olive-oil mills wastewater. Chemosphere 2007; 67:832-8. [PMID: 17208280 DOI: 10.1016/j.chemosphere.2006.10.064] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Revised: 10/27/2006] [Accepted: 10/30/2006] [Indexed: 05/13/2023]
Abstract
In this work, the treatment of an actual industrial waste with three advanced oxidation processes (AOP) has been studied: conductive-diamond electrooxidation (CDEO), ozonation and Fenton oxidation. The wastewater comes from olive-oil mills (OMW) and contains a COD of nearly 3000 mg dm(-3). CDEO allowed achieving the complete mineralization of the waste with high current efficiencies. Likewise, both ozonation and Fenton oxidation were able to treat the wastes, but they obtained very different results in terms of efficiency and mineralization. The accumulation of oxidation-refractory compounds as final products excludes the use of ozonation and Fenton oxidation as a sole treatment technology. This confirms that besides the hydroxyl-radical mediated oxidation, CDEO combines other important oxidation processes such as the direct electro-oxidation on the diamond surface and the oxidation mediated by other electrochemically formed compounds generated on this electrode.
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Affiliation(s)
- P Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Cañizares P, Paz R, Lobato J, Sáez C, Rodrigo MA. Electrochemical treatment of the effluent of a fine chemical manufacturing plant. J Hazard Mater 2006; 138:173-81. [PMID: 16806682 DOI: 10.1016/j.jhazmat.2006.05.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Revised: 05/17/2006] [Accepted: 05/18/2006] [Indexed: 05/10/2023]
Abstract
In this work, the electrochemical oxidation of an actual industrial wastewater with conductive-diamond anodes has been studied. The wastewater is the effluent of a fine chemicals plant. This effluent consists of an aqueous solution of solvents (ketones and alcohols) with a high concentration of aromatic compounds coming from the raw materials, intermediates and products of the different processes of the plant and its COD is around 6000 mg dm(-3). The electrolyses were carried out in a discontinuous operation mode under galvanostatic conditions, using a bench-scale plant equipped with a single compartment electrochemical flow cell. The conductive-diamond electrochemical oxidation (CDEO) allowed achieving the complete mineralization of the waste with high current efficiencies. These efficiencies seem to strongly depend on the concentration, pH and temperature but not on the current density (in the range studied). This confirms that besides the hydroxyl radicals mediated oxidation, CDEO combines other important oxidation processes such as the direct electrooxidation on the diamond surface and the oxidation mediated by other electrochemically formed compounds generated on this electrode. Other two advanced oxidation processes (ozonation and Fenton oxidation) have been also studied in this work for comparison purposes. Both technologies were able to treat the wastes, but they obtained very different results in terms of efficiency and mineralization. The efficiency of ozonation and electrochemical oxidation were very similar (especially during the first stages), although the energy consumption required by the electrochemical process to remove at fixed percentage of COD or TOC was significantly smaller than that of ozonation. The possible accumulation of carboxylic acid as final products excludes the use of Fenton oxidation as a sole treatment technology.
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Affiliation(s)
- P Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Lobato J, Cañizares P, Rodrigo M, Linares J, Manjavacas G. Synthesis and characterisation of poly[2,2-(m-phenylene)-5,5-bibenzimidazole] as polymer electrolyte membrane for high temperature PEMFCs. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2006.01.049] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lobato J, Cañizares P, Rodrigo M, Linares J, Fernández-Fragua A. Application of Sterion® membrane as a polymer electrolyte for DMFCs. Chem Eng Sci 2006. [DOI: 10.1016/j.ces.2006.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Affiliation(s)
- P. Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - F. Martínez
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J. Lobato
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. A. Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Cañizares P, Gadri A, Lobato J, Nasr B, Paz R, Rodrigo MA, Saez C. Electrochemical Oxidation of Azoic Dyes with Conductive-Diamond Anodes. Ind Eng Chem Res 2006. [DOI: 10.1021/ie051427n] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - A. Gadri
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - J. Lobato
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - B. Nasr
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - R. Paz
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - M. A. Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
| | - C. Saez
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain, Department de Chimie Industrielle, Institut Supérieur des Sciences Appliqueés et Technologie de Gabès, Université de Gabès, 6072 Zrig, Gabès, Tunisie, and Chemistry SectionSciences Department, Sur College of Education, B.P. 484, Sur 411, Sultanate of Oman
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Affiliation(s)
- P. Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - F. Martínez
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. Carmona
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J. Lobato
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. A. Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Cañizares P, Lobato J, Paz R, Rodrigo MA, Sáez C. Electrochemical oxidation of phenolic wastes with boron-doped diamond anodes. Water Res 2005; 39:2687-703. [PMID: 15979123 DOI: 10.1016/j.watres.2005.04.042] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 04/19/2005] [Accepted: 04/22/2005] [Indexed: 05/03/2023]
Abstract
The electrochemical oxidation of several phenolic aqueous wastes has been studied using a bench-scale plant with a single-compartment electrochemical flow cell. Boron-doped diamond materials were used as the anode. Complete mineralization of the waste was obtained in the treatment of phenols not substituted with chlorine or nitrogen. Chlorinated phenolic compounds were transformed into carbon dioxide; volatile organochlorinated compounds and nitro-substituted phenols deal with the formation of polymeric materials. These polymeric materials behave as final products or treatment intermediates depending on the nature of the initial pollutant. The removal of nitro- or the chloro-group from the phenolic molecule seems to be one of the first stages in the treatment. Non-nitrogenated or chlorinated carboxylic acids have been found to be the main intermediates in the electrochemical oxidation of all the phenolic compounds tested. The efficiencies of the process depend strongly on the concentration of organic pollutants and on their nature, and not on the current density, at least in the operation range studied.
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Affiliation(s)
- P Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Cañizares P, Carmona M, Lobato J, Martínez F, Rodrigo MA. Electrodissolution of Aluminum Electrodes in Electrocoagulation Processes. Ind Eng Chem Res 2005. [DOI: 10.1021/ie048858a] [Citation(s) in RCA: 166] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Cañizares
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. Carmona
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J. Lobato
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - F. Martínez
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. A. Rodrigo
- Department of Chemical Engineering, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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Cañizares P, Sáez C, Lobato J, Rodrigo MA. Electrochemical Oxidation of Polyhydroxybenzenes on Boron-Doped Diamond Anodes. Ind Eng Chem Res 2004. [DOI: 10.1021/ie049807g] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cañizares P, Sáez C, Lobato J, Rodrigo MA. Electrochemical Treatment of 4-Nitrophenol-Containing Aqueous Wastes Using Boron-Doped Diamond Anodes. Ind Eng Chem Res 2004. [DOI: 10.1021/ie034025t] [Citation(s) in RCA: 176] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Cañizares
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - C. Sáez
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - J. Lobato
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
| | - M. A. Rodrigo
- Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad de Castilla La Mancha, Campus Universitario s/n, 13071 Ciudad Real, Spain
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