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Aguado RJ, Saguer E, Fiol N, Tarrés Q, Delgado-Aguilar M. Pickering emulsions of thyme oil in water using oxidized cellulose nanofibers: Towards bio-based active packaging. Int J Biol Macromol 2024; 263:130319. [PMID: 38387632 DOI: 10.1016/j.ijbiomac.2024.130319] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/14/2024] [Accepted: 02/18/2024] [Indexed: 02/24/2024]
Abstract
The antioxidant and antimicrobial properties of thyme essential oil (TEO) are useful for active food packaging, but its poor aqueous solubility restricts its applications. This work involves anionic cellulose nanofibers (CNFs) as the sole stabilizing agent for TEO-in-water emulsions, with oil concentrations ranging from 10 mL/L to 300 mL/L. A double mechanism was proposed: the adsorption of CNFs at oil/water interfaces restricted coalescence to a limited extent, while thickening (rheological stabilization) was required to avoid the buoyance of large droplets (>10 μm). Thickening effects comprised both higher viscosity (over 0.1 Pa·s at 10 s-1) and yield stress (approximately 0.9 Pa). Dilute emulsions had good film-forming capabilities, whereas concentrated emulsions were suitable for paper coating. Regarding antimicrobial activity, CNF-stabilized TEO-in-water emulsions successfully inhibited the growth of both Gram-negative (E. coli, S. typhimurium) and Gram-positive bacteria (L. monocytogenes). As for the antioxidant properties, approximately 50 mg of paper or 3-5 mg of film per mL of food simulant D1 were required to attain 50 % inhibition in radical scavenging tests. Nonetheless, despite the stability and the active properties of these bio-based hydrocolloids, providing this antioxidant and antimicrobial activity was incompatible with maintaining the organoleptic properties of the foodstuff unaltered.
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Affiliation(s)
- Roberto J Aguado
- LEPAMAP-PRODIS research group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain; Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain.
| | - Elena Saguer
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Núria Fiol
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Quim Tarrés
- LEPAMAP-PRODIS research group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain; Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Marc Delgado-Aguilar
- LEPAMAP-PRODIS research group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain; Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
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Toledano‐Martos R, Bagó‐Mas A, Deulofeu M, Homs J, Fiol N, Verdú E, Boadas‐Vaello P. Natural polyphenolic coffee extract administration relieves chronic nociplastic pain in a reserpine-induced fibromyalgia-like female mouse model. Brain Behav 2024; 14:e3386. [PMID: 38376034 PMCID: PMC10794125 DOI: 10.1002/brb3.3386] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/07/2023] [Accepted: 12/21/2023] [Indexed: 02/21/2024] Open
Abstract
INTRODUCTION Nociplastic pain involves reflexive and nonreflexive pain responses and it is a core symptom of fibromyalgia (FM). The increasing prevalence of this health condition and the low rates of patients' quality of life, combined with the lack of suitable pharmacologic treatments, evidence the demand to research new alternatives. Polyphenols may be potential therapeutic candidates as they have been reported to exert pathological pain modulation in preclinical models. In that context, this work was aimed to study the antinociceptive effects of a polyphenolic extract obtained from decaffeinated ground roasted coffee, in the RIM6 FM-like mouse model. METHODS To this end, RIM6 adult ICR-CD1 female mice were administered daily once a week with either 10 or 15 mg/kg of extract, and reflexive pain responses were evaluated for up to 3 weeks. At the end, the depressive-like behavior was assessed as a nonreflexive pain response, and spinal cord and serum samples were collected for immunohistochemical and toxicological analyses. RESULTS These findings showed that the repeated administration of the coffee polyphenolic extract (CE) modulated reflexive pain responses, depressive-like behavior, and spinal cord gliosis in a dose-dependent manner, without signs of systemic toxicity. CONCLUSION Thus, the CE may be a potential pharmacological treatment suitable to relieve nociplastic pain responses characteristic of FM.
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Affiliation(s)
- Rubén Toledano‐Martos
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
| | - Anna Bagó‐Mas
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
| | - Meritxell Deulofeu
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
| | - Judit Homs
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
- University School of Health and Sport (EUSES), University of GironaGironaCataloniaSpain
| | - Núria Fiol
- Department of Chemical Engineering, Agriculture and Food Technology, Polytechnic SchoolUniversity of GironaGironaCataloniaSpain
| | - Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
| | - Pere Boadas‐Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical SciencesUniversity of GironaGironaCataloniaSpain
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Aguado RJ, Mazega A, Fiol N, Tarrés Q, Mutjé P, Delgado-Aguilar M. Durable Nanocellulose-Stabilized Emulsions of Dithizone/Chloroform in Water for Hg 2+ Detection: A Novel Approach for a Classical Problem. ACS Appl Mater Interfaces 2023; 15:12580-12589. [PMID: 36821826 PMCID: PMC9999351 DOI: 10.1021/acsami.2c22713] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
The use of dithizone (DTZ) for colorimetric heavy-metal detection is approximately one century old. However, its pending stability issues and the need for simple indicators justify further research. Using cellulose nanofibers, we attained DTZ-containing emulsions with high stability. These emulsions had water (at least 95 wt %) and acetic acid (1-8 mL/L) conforming the continuous phase, while dispersed droplets of diameter <1 μm contained chloroform-solvated DTZ (3 wt %). The solvation cluster was computed by molecular dynamics simulations, suggesting that chloroform slightly reduces the dihedral angle between the two sides of the thiocarbazone chain. Nanocellulose concentrations over 0.2 wt % sufficed to obtain macroscopically homogeneous mixtures with no phase separation. Furthermore, the rate of degradation of DTZ in the nanocellulose-stabilized emulsion did not differ significantly from a DTZ/chloroform solution, outperforming DTZ/toluene and DTZ/acetonitrile. Not only is the emulsion readily and immediately responsive to mercury(II), but it also decreases interferences from other ions and from natural samples. Unexpectedly, neither lead(II) nor cadmium(II) triggered a visual response at trace concentrations. The limit of detection of these emulsions is 15 μM or 3 mg/L, exceeding WHO limits for mercury(II) in drinking water, but they could be effective at raising alarms.
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Affiliation(s)
- Roberto J. Aguado
- LEPAMAP-PRODIS
Research Group, University of Girona, C/ Maria Aurèlia Capmany,
61, 17003 Girona, Spain
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - André Mazega
- LEPAMAP-PRODIS
Research Group, University of Girona, C/ Maria Aurèlia Capmany,
61, 17003 Girona, Spain
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Núria Fiol
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Quim Tarrés
- LEPAMAP-PRODIS
Research Group, University of Girona, C/ Maria Aurèlia Capmany,
61, 17003 Girona, Spain
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Pere Mutjé
- LEPAMAP-PRODIS
Research Group, University of Girona, C/ Maria Aurèlia Capmany,
61, 17003 Girona, Spain
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Marc Delgado-Aguilar
- LEPAMAP-PRODIS
Research Group, University of Girona, C/ Maria Aurèlia Capmany,
61, 17003 Girona, Spain
- Department
of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
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Tarrés Q, Aguado R, Zoppe JO, Mutjé P, Fiol N, Delgado-Aguilar M. Dynamic Light Scattering Plus Scanning Electron Microscopy: Usefulness and Limitations of a Simplified Estimation of Nanocellulose Dimensions. Nanomaterials (Basel) 2022; 12:4288. [PMID: 36500912 PMCID: PMC9739265 DOI: 10.3390/nano12234288] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/25/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Measurements of nanocellulose size usually demand very high-resolution techniques and tedious image processing, mainly in what pertains to the length of nanofibers. Aiming to ease the process, this work assesses a relatively simple method to estimate the dimensions of nanocellulose particles with an aspect ratio greater than 1. Nanocellulose suspensions, both as nanofibers and as nanocrystals, are subjected to dynamic light scattering (DLS) and to field-emission scanning electron microscopy (FE-SEM). The former provides the hydrodynamic diameter, as long as the scatter angle and the consistency are adequate. Assays with different angles and concentrations compel us to recommend forward scattering (12.8°) and concentrations around 0.05-0.10 wt %. Then, FE-SEM with magnifications of ×5000-×20,000 generally suffices to obtain an acceptable approximation for the actual diameter, at least for bundles. Finally, length can be estimated by a simple geometric relationship. Regardless of whether they are collected from FE-SEM or DLS, size distributions are generally skewed to lower diameters. Width distributions from FE-SEM, in particular, are well fitted to log-normal functions. Overall, while this method is not valid for the thinnest fibrils or for single, small nanocrystals, it can be useful in lieu of very high-resolution techniques.
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Affiliation(s)
- Quim Tarrés
- LEPAMAP-PRODIS Research Group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Roberto Aguado
- LEPAMAP-PRODIS Research Group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Justin O. Zoppe
- Department of Materials Science and Engineering, Universitat Politecnica de Catalunya (UPC), 08019 Barcelona, Spain
| | - Pere Mutjé
- LEPAMAP-PRODIS Research Group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Núria Fiol
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/Maria Aurèlia Capmany, 61, 17003 Girona, Spain
| | - Marc Delgado-Aguilar
- LEPAMAP-PRODIS Research Group, University of Girona, C/ Maria Aurèlia Capmany, 61, 17003 Girona, Spain
- Department of Chemical and Agricultural Engineering and Agrifood Technology, University of Girona, C/Maria Aurèlia Capmany, 61, 17003 Girona, Spain
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5
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Bagó-Mas A, Korimová A, Deulofeu M, Verdú E, Fiol N, Svobodová V, Dubový P, Boadas-Vaello P. Polyphenolic grape stalk and coffee extracts attenuate spinal cord injury-induced neuropathic pain development in ICR-CD1 female mice. Sci Rep 2022; 12:14980. [PMID: 36056079 PMCID: PMC9440260 DOI: 10.1038/s41598-022-19109-4] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/24/2022] [Indexed: 11/09/2022] Open
Abstract
More than half of spinal cord injury (SCI) patients develop central neuropathic pain (CNP), which is largely refractory to current treatments. Considering the preclinical evidence showing that polyphenolic compounds may exert antinociceptive effects, the present work aimed to study preventive effects on SCI-induced CNP development by repeated administration of two vegetal polyphenolic extracts: grape stalk extract (GSE) and coffee extract (CE). Thermal hyperalgesia and mechanical allodynia were evaluated at 7, 14 and 21 days postinjury. Then, gliosis, ERK phosphorylation and the expression of CCL2 and CX3CL1 chemokines and their receptors, CCR2 and CX3CR1, were analyzed in the spinal cord. Gliosis and CX3CL1/CX3CR1 expression were also analyzed in the anterior cingulate cortex (ACC) and periaqueductal gray matter (PAG) since they are supraspinal structures involved in pain perception and modulation. GSE and CE treatments modulated pain behaviors accompanied by reduced gliosis in the spinal cord and both treatments modulated neuron-glia crosstalk-related biomolecules expression. Moreover, both extracts attenuated astrogliosis in the ACC and PAG as well as microgliosis in the ACC with an increased M2 subpopulation of microglial cells in the PAG. Finally, GSE and CE prevented CX3CL1/CX3CR1 upregulation in the PAG, and modulated their expression in ACC. These findings suggest that repeated administrations of either GSE or CE after SCI may be suitable pharmacologic strategies to attenuate SCI-induced CNP development by means of spinal and supraspinal neuroinflammation modulation.
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Affiliation(s)
- Anna Bagó-Mas
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Andrea Korimová
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Meritxell Deulofeu
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Enrique Verdú
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain
| | - Núria Fiol
- Department of Chemical Engineering, Agriculture and Food Technology, Polytechnic School, University of Girona, Girona, Spain
| | - Viktorie Svobodová
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Petr Dubový
- Department of Anatomy, Division of Neuroanatomy, Faculty of Medicine, Masaryk University, Brno, Czechia.
| | - Pere Boadas-Vaello
- Research Group of Clinical Anatomy, Embryology and Neuroscience (NEOMA), Department of Medical Sciences, University of Girona, Girona, Spain.
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Gusmaroli L, Liu C, Poch J, Fiol N, Alberti G, Villaescusa I. A fast and easy approach to the simulation of binary mixtures sorption kinetics. Sci Total Environ 2018; 616-617:948-959. [PMID: 29102192 DOI: 10.1016/j.scitotenv.2017.10.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/08/2017] [Accepted: 10/21/2017] [Indexed: 06/07/2023]
Affiliation(s)
- L Gusmaroli
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, 27100 Pavia, Italy; Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Avda. Maria Aurèlia Capmany, 61, 17003 Girona, Spain.
| | - C Liu
- College of Environmental Science and Engineering, Anhui Normal University, South Jiuhua Road 189, Wuhu 241002, Anhui, China
| | - J Poch
- Department of Applied Mathematics, Escola Politècnica Superior, Universitat de Girona, Avda. Maria Aurèlia Capmany, 61, 17003 Girona, Spain.
| | - N Fiol
- Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Avda. Maria Aurèlia Capmany, 61, 17003 Girona, Spain.
| | - G Alberti
- Dipartimento di Chimica, Università di Pavia, via Taramelli 12, 27100 Pavia, Italy
| | - I Villaescusa
- Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Avda. Maria Aurèlia Capmany, 61, 17003 Girona, Spain.
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7
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Garlaschelli F, Alberti G, Fiol N, Villaescusa I. Application of Anodic Stripping Voltammetry to assess sorption performance of an industrial waste entrapped in alginate beads to remove As(V). ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.01.003] [Citation(s) in RCA: 5] [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: 11/24/2022] Open
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8
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Ben Mbarek W, Azabou M, Pineda E, Fiol N, Escoda L, Suñol JJ, Khitouni M. Rapid degradation of azo-dye using Mn–Al powders produced by ball-milling. RSC Adv 2017. [DOI: 10.1039/c6ra28578c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study was conducted on the reduction reaction of the azo dye Reactive Black 5 by means of the Mn85Al15 particles prepared by melt-spinning and ball-milling processes.
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Affiliation(s)
- W. Ben Mbarek
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
| | - M. Azabou
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
| | - E. Pineda
- Universitatpolitècnica De Catalunya
- Dept. Física i EnginyeriaNuclear
- ESAB
- 08660 Castelldefels
- Spain
| | - N. Fiol
- Universitat de Girona
- P-II Campus Montilivi
- Girona
- Spain
| | - L. Escoda
- Dep. deFisica
- Universitat de Girona
- Campus Montilivi
- Girona 17071
- Spain
| | - J. J. Suñol
- Dep. deFisica
- Universitat de Girona
- Campus Montilivi
- Girona 17071
- Spain
| | - M. Khitouni
- Laboratoire de Chimie Inorganique
- UR-11-Es-73
- Faculté des Sciences de Sfax
- University of Sfax
- Tunisia
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Liu C, Fiol N, Villaescusa I, Poch J. New approach in modeling Cr(VI) sorption onto biomass from metal binary mixtures solutions. Sci Total Environ 2016; 541:101-108. [PMID: 26398455 DOI: 10.1016/j.scitotenv.2015.09.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 05/25/2015] [Revised: 09/01/2015] [Accepted: 09/01/2015] [Indexed: 06/05/2023]
Abstract
In the last decades Cr(VI) sorption equilibrium and kinetic studies have been carried out using several types of biomasses. However there are few researchers that consider all the simultaneous processes that take place during Cr(VI) sorption (i.e., sorption/reduction of Cr(VI) and simultaneous formation and binding of reduced Cr(III)) when formulating a model that describes the overall sorption process. On the other hand Cr(VI) scarcely exists alone in wastewaters, it is usually found in mixtures with divalent metals. Therefore, the simultaneous removal of Cr(VI) and divalent metals in binary mixtures and the interactive mechanism governing Cr(VI) elimination have gained more and more attention. In the present work, kinetics of Cr(VI) sorption onto exhausted coffee from Cr(VI)-Cu(II) binary mixtures has been studied in a stirred batch reactor. A model including Cr(VI) sorption and reduction, Cr(III) sorption and the effect of the presence of Cu(II) in these processes has been developed and validated. This study constitutes an important advance in modeling Cr(VI) sorption kinetics especially when chromium sorption is in part based on the sorbent capacity of reducing hexavalent chromium and a metal cation is present in the binary mixture.
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Affiliation(s)
- Chang Liu
- College of Environmental Science and Engineering, Anhui Normal University, South Jiuhua Road, 189, 241002 Wuhu, China; Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Mª Aurèlia Capmany, 61, 17071 Girona, Spain
| | - Núria Fiol
- Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Mª Aurèlia Capmany, 61, 17071 Girona, Spain
| | - Isabel Villaescusa
- Chemical Engineering Department, Escola Politècnica Superior, Universitat de Girona, Mª Aurèlia Capmany, 61, 17071 Girona, Spain.
| | - Jordi Poch
- Applied Mathematics Department, Escola Politècnica Superior, Universitat de Girona, Mª Aurèlia Capmany, 61, 17071 Girona, Spain
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Olivella MÀ, Bazzicalupi C, Bianchi A, del Río JC, Fiol N, Villaescusa I. Binding interactions between suberin monomer components and pesticides. Sci Total Environ 2015; 527-528:159-164. [PMID: 25965034 DOI: 10.1016/j.scitotenv.2015.04.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 03/21/2015] [Revised: 04/29/2015] [Accepted: 04/29/2015] [Indexed: 06/04/2023]
Abstract
Understanding the role of biomacromolecules and their interactions with pollutants is a key for elucidating the sorption mechanisms and making an accurate assessment of the environmental fate of pollutants. The knowledge of the sorption properties of the different constituents of these biomacromolecules may furnish a significant contribution to this purpose. Suberin is a very abundant biopolymer in higher plants. In this study, suberin monomers isolated from cork were analyzed by thermally-assisted methylation with tetramethylammonium hydroxide (TMAH) in a pyrolysis unit coupled to gas chromatography-mass spectrometry (GC/MS). The isolated monomer mixture was used to study the sorption of three pesticides (isoproturon, methomyl and oxamyl). The modes of pesticide-sorbent interactions were analyzed by means of two modeling calculations, the first one representing only the mixture of suberin monomers used in the sorption study, and the second one including glycerol to the mixture of suberin monomers, as a building block of the suberin molecule. The results indicated that the highest sorption capacity exhibited by the sorbent was for isoproturon (33%) being methomyl and oxamyl sorbed by the main suberin components to a lesser extent (3% and<1%, respectively). In addition to van der Waals interactions with the apolar region of sorbent and isoproturon, modeling calculations evidenced the formation of a hydrogen bond between the isoproturon NH group and a carboxylic oxygen atom of a suberin monomer. In the case of methomyl and oxamyl only weak van der Waals interactions stabilize the pesticide-sorbent adducts. The presence of glycerol in the model provoked significant changes in the interactions with isoproturon and methomyl.
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Affiliation(s)
- M À Olivella
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain.
| | - C Bazzicalupi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Italy
| | - A Bianchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Italy
| | - J C del Río
- Instituto de Recursos Naturales y Agrobiología de Sevilla, Consejo Superior de Investigaciones Científicas, P.O. Box 1052, 41080 Seville, Spain
| | - N Fiol
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain
| | - I Villaescusa
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain
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11
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Fiol N, Poch J, Villaescusa I. Chromium (VI) uptake by grape stalks wastes encapsulated in calcium alginate beads: equilibrium and kinetics studies. Chemical Speciation & Bioavailability 2015. [DOI: 10.3184/095422904782775153] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Olivella MÀ, Bazzicalupi C, Bianchi A, Fiol N, Villaescusa I. New insights into the interactions between cork chemical components and pesticides. The contribution of π-π interactions, hydrogen bonding and hydrophobic effect. Chemosphere 2015; 119:863-870. [PMID: 25240950 DOI: 10.1016/j.chemosphere.2014.08.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 11/11/2013] [Revised: 08/12/2014] [Accepted: 08/21/2014] [Indexed: 06/03/2023]
Abstract
The role of chemical components of cork in the sorption of several pesticides has been investigated. For this purpose raw cork and three cork extracted fractions (i.e. cork free of aliphatic extractives, cork free of all extractives and cork free of all extractives and suberin) were used as sorbent of three ionic pesticides (propazine, 2,4-dichlorophenoxy acetic acid (2,4-D) and alachlor) and five non-ionic pesticides (chlorpyrifos, isoproturon, metamitron, methomyl and oxamyl) with a logKow within the range -0.47 to 4.92. The effect of cations on the ionic pesticides, propazine and 2,4-D sorption was also analyzed. Results indicated that the highest yields were obtained for chlorpyrifos and alachlor sorption onto raw cork (>55%). After removal of aliphatic extractives sorption of all pesticides increased that ranged from 3% for propazine to 31% for alachlor. In contrast, removal of phenolic extractives caused a sorption decrease. Low sorption yields were obtained for hydrophobic pesticides such as metamitron, oxamyl and methomyl (<11%) by using all cork fractions and extremely low when using raw cork (<1%). FTIR analysis was useful to indicate that lignin moieties were the main components involved on the sorption process. Modelling calculations evidenced that π-stacking interactions with the aromatic groups of lignin play a major role in determining the adsorption properties of cork toward aromatic pesticides. Results presented in this paper gain insights into the cork affinities for pesticides and the interactions involved in the sorption process and also enables to envisage sorption affinity of cork for other organic pollutants.
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Affiliation(s)
- M À Olivella
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain.
| | - C Bazzicalupi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Italy
| | - A Bianchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Italy
| | - N Fiol
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain
| | - I Villaescusa
- Department of Chemical Engineering, Escola Politècnica Superior, Universitat de Girona, Maria Aurèlia Capmany, 61, 17071 Girona, Spain
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Escudero C, Fiol N, Villaescusa I, Bollinger JC. Arsenic removal by a waste metal (hydr)oxide entrapped into calcium alginate beads. J Hazard Mater 2009; 164:533-541. [PMID: 18818018 DOI: 10.1016/j.jhazmat.2008.08.042] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2008] [Revised: 07/25/2008] [Accepted: 08/11/2008] [Indexed: 05/26/2023]
Abstract
In this work, a solid waste material from an electroplating industrial plant has been investigated for As(III) and As(V) sorption. This sorbent, a mixture of mainly Fe(III) and Ni(II) (hydr)oxides, has been used both in its native form and entrapped in calcium alginate. The effect of sorbent concentration in the gel bead, solution pH, contact time and As(III) and As(V) concentration on sorption has been studied. Furthermore the effect of the gel matrix has been investigated. A 10% (w/v) of (hydr)oxide in the gel beads was found to provide both spherical beads shape and good sorption performance. Solution pH was found to exert a stronger influence in As(V) than in As(III) sorption. The optimum pH range resulted to be within 5-10 for As(III) and within 6-9 for As(V). Taking into account these results, pH 8 was chosen for further sorption experiments. Equilibrium was reached after 48 h contact time for the studied systems. Kinetics data of both As(III) and As(V) onto native (hydr)oxide (O) and entrapped in calcium alginate beads (10% O-CA) were successfully modelled according to pseudo-first and pseudo-second order equations. Sorption equilibrium data were evaluated by the Langmuir isotherm model and the maximum capacity q(max) were 77.4 and 126.5 mg g(-1) for As(III) on O and 10% O-CA, and 26.8 and 41.6 mg g(-1) for As(V) on O and 10% O-CA, respectively. The entrapment of the (hydr)oxide in a calcium alginate gel matrix improved the As(III) and As(V) sorption by 60%.
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Affiliation(s)
- Carlos Escudero
- Chemical Engineering Department, Universitat de Girona, Girona, Spain
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Fiol N, Escudero C, Villaescusa I. Chromium sorption and Cr(VI) reduction to Cr(III) by grape stalks and yohimbe bark. Bioresour Technol 2008; 99:5030-5036. [PMID: 17945493 DOI: 10.1016/j.biortech.2007.09.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Revised: 09/03/2007] [Accepted: 09/04/2007] [Indexed: 05/25/2023]
Abstract
In this work, two low cost sorbents, grape stalks and yohimbe bark wastes were used to remove Cr(VI) and Cr(III) from aqueous solutions. Batch experiments were designed to obtain Cr(VI) and Cr(III) sorption data. The mechanism of Cr(III) and Cr(VI) removal and Cr(VI) reduction to Cr(III) by the two vegetable wastes, has been investigated. Fourier transform infrared rays (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis on solid phase were performed to determine the main functional groups that might be involved in metal uptake and to confirm the presence of Cr(III) on the sorbent, respectively. Results put into evidence that both sorbents are able to reduce Cr(VI) to its trivalent form.
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Affiliation(s)
- Núria Fiol
- Chemical Engineering Department, Universitat de Girona, Avda. Lluís Santaló, s/n, 17071 Girona, Spain
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Nurchi VM, Floris C, Pinna R, Fiol N, Villaescusa I. Metal ion uptake from aqueous solution by olive stones: a carbon-13 solid-state nuclear magnetic resonance and potentiometric study. Water Environ Res 2007; 79:2363-2367. [PMID: 17966704 DOI: 10.2175/106143007x183880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The use of biomasses that result from the agriculture and food industries in removing heavy metals from wastewaters is attracting increasing interest. We present a joined potentiometric and cross polarization magic angle spinning (CP-MAS) carbon-13 (13C) nuclear magnetic resonance (NMR) study on the interaction of olive stones with copper(II), nickel(II), and cadmium(II). The potentiometric measurements allow both to distinguish two kind of basic sites in the olive stones and to postulate the coordination models for the three studied metals. The NMR spectral analysis allows the attribution of the different signals to the components of the olive stone matrix. A comparison of CP-MAS 13C NMR spectra of the samples after metal treatment suggests a specific complexation between metal ions and hydroxyl groups on guaiacyl and syringyl moieties.
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Affiliation(s)
- Valeria Marina Nurchi
- Chemical Science Department, Cittadella Universitaria, 09042 Monserrato Cagliari, Italy.
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Fiol N, Escudero C, Poch J, Villaescusa I. Preliminary studies on Cr(VI) removal from aqueous solution using grape stalk wastes encapsulated in calcium alginate beads in a packed bed up-flow column. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2005.11.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [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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Martínez M, Miralles N, Hidalgo S, Fiol N, Villaescusa I, Poch J. Removal of lead(II) and cadmium(II) from aqueous solutions using grape stalk waste. J Hazard Mater 2006; 133:203-11. [PMID: 16310940 DOI: 10.1016/j.jhazmat.2005.10.030] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2005] [Revised: 09/28/2005] [Accepted: 10/05/2005] [Indexed: 05/05/2023]
Abstract
The sorption of lead and cadmium from aqueous solutions by grape stalk waste (a by-product of wine production) was investigated. The effects of the contact time, pH of the solution, ionic medium, initial metal concentration, other metal ions present and ligands were studied in batch experiments at 20 degrees C. Maximum sorption for both metals was found to occur at an initial pH of around 5.5. The equilibrium process was described well by the Langmuir isotherm model, with maximum grape stalk sorption capacities of 0.241 and 0.248 mmol g(-1) for Pb(II) and Cd(II), respectively, at pH around 5.5. Kinetic studies showed good correlation coefficients for a pseudo-second-order kinetic model. The presence of NaCl and NaClO(4) in the solution caused a reduction in Pb and Cd sorption, the latter being more strongly suppressed. The presence of other metals in the uptake process did not affect the removal of Pb, while the Cd uptake was much reduced. HCl or EDTA solutions were able to desorb lead from the grape stalks completely, while an approximately 65% desorption yield was obtained for cadmium. From the results obtained it seems that other mechanisms, such as surface complexation and electrostatic interactions, must be involved in the metal sorption in addition to ion exchange.
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Affiliation(s)
- María Martínez
- Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Barcelona, Spain.
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Villaescusa I, Fiol N, Martínez M, Miralles N, Poch J, Serarols J. Removal of copper and nickel ions from aqueous solutions by grape stalks wastes. Water Res 2004; 38:992-1002. [PMID: 14769419 DOI: 10.1016/j.watres.2003.10.040] [Citation(s) in RCA: 174] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2002] [Revised: 09/30/2003] [Accepted: 10/24/2003] [Indexed: 05/24/2023]
Abstract
In the present work, the usefulness of grape stalks wastes generated in the wine production process has been investigated for the removal of copper and nickel ions from aqueous solutions. The sorption process was relatively fast and equilibrium was reached after about 60 min of contact. The influence of pH, sodium chloride and metal concentration on metal removal has been studied. Uptake showed a pH-dependent profile. Maximum sorption for both metals was found to occur at around pH 5.5-6.0. An increase of sodium chloride concentration caused a decrease in metal removal. Langmuir isotherms, at pH 6.0, for each metal were used to describe sorption equilibrium data. Maximum uptake obtained was 1.59x10(-4) mol of copper and 1.81x10(-4) mol of nickel per gram of dry sorbent. Sorption of copper and nickel on grape stalks released an equivalent amount of alkaline and alkaline earth metals (K+, Mg2+, Ca2+) and protons, indicating that ionic exchange is predominantly responsible for metal ion uptake. Fourier transform infrared (FTIR) spectrometry analysis indicated that lignin C-O bond might be involved in metal uptake. Equilibrium batch sorption studies were also performed using a two metal system containing (Cu(II)+Ni(II)). In the evaluation of the two metal sorption system performance, single isotherm curves had to be replaced by three-dimensional sorption isotherm surface. In order to describe the isotherm surface mathematically, the extended-Langmuir model was used. Nickel was found to be much more sensitive to the presence of copper than copper is to the presence of nickel.
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Affiliation(s)
- Isabel Villaescusa
- Departament d'Enginyeria Química, Agrària i Tecnologia Agroalimentària, Universitat de Girona, Avda Lluis Santaló, Girona 17003, Spain.
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