This page has only limited features, please log in for full access.

Dr. Inmaculada Velo Gala
FEUP, Faculty of Engineering of University of Porto, 4200-465, Portugal

Basic Info


Research Keywords & Expertise

0 Disinfection
0 Photo Catalysis
0 Advanced oxidation processes
0 carbocatalysis
0 Electro chemistry

Fingerprints

Advanced oxidation processes

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 09 March 2021 in Pharmaceuticals
Reads 0
Downloads 0

The synthetic nucleoside acyclovir is considered an outstanding model of the natural nucleoside guanosine. With the purpose of deepening on the influence and nature of non-covalent interactions regarding molecular recognition patterns, three novel Cu(II) complexes, involving acyclovir (acv) and the ligand receptor N-(2-hydroxyethyl)ethylenediamine (hen), have been synthesized and thoroughly characterized. The three novel compounds introduce none, one or two acyclovir molecules, respectively. Molecular recognition has been evaluated using single crystal X-ray diffraction. Furthermore, theoretical calculations and other physical methods such as thermogravimetric analysis, infrared and UV-Vis spectroscopy, electron paramagnetic resonance and magnetic measurements have been used. Theoretical calculations are in line with experimental results, supporting the relevance of the [metal-N7(acv) + H-bond] molecular recognition pattern. It was also shown that (hen)O-H group is used as preferred H-donor when it is found within the basal coordination plane, since the higher polarity of the terminal (hen)O-H versus the N-H group favours its implication. Otherwise, when (hen)O-H occupies the distal coordination site, (hen)N-H groups can take over.

ACS Style

Inmaculada Velo-Gala; Miquel Barceló-Oliver; Diego Gil; Josefa González-Pérez; Alfonso Castiñeiras; Alicia Domínguez-Martín. Deciphering the H-Bonding Preference on Nucleoside Molecular Recognition through Model Copper(II) Compounds. Pharmaceuticals 2021, 14, 244 .

AMA Style

Inmaculada Velo-Gala, Miquel Barceló-Oliver, Diego Gil, Josefa González-Pérez, Alfonso Castiñeiras, Alicia Domínguez-Martín. Deciphering the H-Bonding Preference on Nucleoside Molecular Recognition through Model Copper(II) Compounds. Pharmaceuticals. 2021; 14 (3):244.

Chicago/Turabian Style

Inmaculada Velo-Gala; Miquel Barceló-Oliver; Diego Gil; Josefa González-Pérez; Alfonso Castiñeiras; Alicia Domínguez-Martín. 2021. "Deciphering the H-Bonding Preference on Nucleoside Molecular Recognition through Model Copper(II) Compounds." Pharmaceuticals 14, no. 3: 244.

Review
Published: 19 December 2020 in Catalysts
Reads 0
Downloads 0

The objective of this study was to summarize the results obtained in a wide research project carried out for more than 15 years on the catalytic activity of different catalysts (activated carbon, metal–carbon xerogels/aerogels, iron-doped silica xerogels, ruthenium metal complexes, reduced graphene oxide-metal oxide composites, and zeolites) in the photooxidation (by using UV or solar radiation) and ozonation of water pollutants, including herbicides, naphthalenesulfonic acids, sodium para-chlorobenzoate, nitroimidazoles, tetracyclines, parabens, sulfamethazine, sodium diatrizoate, cytarabine, and surfactants. All catalysts were synthesized and then texturally, chemically, and electronically characterized using numerous experimental techniques, including N2 and CO2 adsorption, mercury porosimetry, thermogravimetric analysis, X-ray diffraction, Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, diffuse reflectance UV–vis spectroscopy, photoluminescence analysis, and transmission electron microscopy. The behavior of these materials as photocatalysts and ozonation catalysts was related to their characteristics, and the catalytic mechanisms in these advanced oxidation processes were explored. Investigations were conducted into the effects on pollutant degradation, total organic carbon reduction, and water toxicity of operational variables and the presence of different chemical species in ultrapure, surface, ground, and wastewaters. Finally, a review is provided of the most recent and relevant published studies on photocatalysis and catalyzed ozonation in water treatments using similar catalysts to those examined in our project.

ACS Style

José Rivera-Utrilla; María Victoria López-Ramón; Manuel Sánchez-Polo; Miguel Ángel Álvarez; Inmaculada Velo-Gala. Characteristics and Behavior of Different Catalysts Used for Water Decontamination in Photooxidation and Ozonation Processes. Catalysts 2020, 10, 1485 .

AMA Style

José Rivera-Utrilla, María Victoria López-Ramón, Manuel Sánchez-Polo, Miguel Ángel Álvarez, Inmaculada Velo-Gala. Characteristics and Behavior of Different Catalysts Used for Water Decontamination in Photooxidation and Ozonation Processes. Catalysts. 2020; 10 (12):1485.

Chicago/Turabian Style

José Rivera-Utrilla; María Victoria López-Ramón; Manuel Sánchez-Polo; Miguel Ángel Álvarez; Inmaculada Velo-Gala. 2020. "Characteristics and Behavior of Different Catalysts Used for Water Decontamination in Photooxidation and Ozonation Processes." Catalysts 10, no. 12: 1485.

Journal article
Published: 16 March 2020 in Journal of Cleaner Production
Reads 0
Downloads 0

Advanced oxidation processes (AOPs) have been proposed as tertiary treatments for municipal WWTP effluents. UV-activated peroxydisulfate (PDS) and peroxymonosulfate (PMS) are viable technological alternatives for treating secondary WWTP effluent containing PhACs. This article examines the feasibility of applying UV/PDS and UV/PMS technologies at pilot scale, assessing their energy and cost requirements. In addition, life cycle assessment (LCA) impacts associated with the treatment of 1 m³ of wastewater with an effective average pharmaceutical active compounds (PhACs) removal of 80% has also been evaluated. Photolysis (UV) treatment alone was not capable of degrading PhACs to a sufficient extent in WWTP secondary effluent. The addition of 0.4 mmol of PDS or PMS, applying 416 mJ/cm2 of UV fluence, resulted in average removals of 84% and 85% for UV/PDS and UV/PMS, respectively. The electrical energy (kWh) required to degrade the mix of PhACs by one order of magnitude in 1 m³ of contaminated water was calculated as 0.9 kWh/m³/order and 0.8 kWh/m³/order 4 for UV/PDS and UV/PMS, respectively. However, the overall cost, including operation, materials and maintenance, of applying UV/PDS and UV/PMS, based on an average PhAC removal of 80%, was 0.088 €/m³ and 0.280 €/m³, respectively. From the sustainability assessment, the factors with the greatest environmental footprint for the UV/PDS process were chemical production (PDS: 52.9%, PMS: 85%) and electricity consumption (UV/PDS: 33.4%, UV/PMS: 11.2). Finally, the normalized environmental impact analysis showed that UV/PDS was associated with an environmental footprint three times lower than UV/PMS. The overall assessment revealed that UV/PDS is preferable to UV/PMS to remove PhACs in secondary effluents of municipal WWTPs having a lower economic and environmental impact.

ACS Style

Luca Sbardella; Inmaculada Velo-Gala; Joaquim Comas; Serni Morera Carbonell; Ignasi Rodríguez-Roda; Wolfgang Gernjak. Integrated assessment of sulfate-based AOPs for pharmaceutical active compound removal from wastewater. Journal of Cleaner Production 2020, 260, 121014 .

AMA Style

Luca Sbardella, Inmaculada Velo-Gala, Joaquim Comas, Serni Morera Carbonell, Ignasi Rodríguez-Roda, Wolfgang Gernjak. Integrated assessment of sulfate-based AOPs for pharmaceutical active compound removal from wastewater. Journal of Cleaner Production. 2020; 260 ():121014.

Chicago/Turabian Style

Luca Sbardella; Inmaculada Velo-Gala; Joaquim Comas; Serni Morera Carbonell; Ignasi Rodríguez-Roda; Wolfgang Gernjak. 2020. "Integrated assessment of sulfate-based AOPs for pharmaceutical active compound removal from wastewater." Journal of Cleaner Production 260, no. : 121014.

Journal article
Published: 05 July 2019 in Journal of Hazardous Materials
Reads 0
Downloads 0

Ultraviolet radiation (UV)-activated peroxydisulfate (PDS) and peroxymonosulfate (PMS) advanced oxidation processes were examined for their capacity to remove nine pharmaceutically active compounds (PhACs) from secondary effluent. The effect of operational parameters (initial oxidant concentration, UV exposure time, pH, common coexisting anions and effluent organic matter (EfOM)) on UV/PDS and UV/PMS treatment efficiency was investigated in a collimated beam device housing a low-pressure mercury UV lamp emitting light at 253.7 nm. Both AOPs achieved high removals (>90%) when applied to pure water. Under otherwise similar conditions the removal percentage fell by 20–30% due to the scavenging of effluent organic matter (EfOM) in secondary effluent. Finally, eliminating EfOM but maintaining the inorganic composition, the radical scavenging effect was reduced and 98.3% and 85.6% average removals were obtained by UV/PDS and UV/PMS, respectively. Increasing pH improved degradation of several PhACs containing amine groups. Higher oxidant dosages created only a significant benefit in UV/PDS. The chloride anion produced a negligible effect on both processes, while higher nitrate concentrations increased removal percentage but did not affect degradation rate constants. Finally and surprisingly, the addition of bicarbonate had the strongest positive impact on the degradation kinetics observed, even stronger than the elimination of EfOM from secondary effluent.

ACS Style

L. Sbardella; I. Velo-Gala; J. Comas; I. Rodríguez-Roda Layret; A. Fenu; W. Gernjak. The impact of wastewater matrix on the degradation of pharmaceutically active compounds by oxidation processes including ultraviolet radiation and sulfate radicals. Journal of Hazardous Materials 2019, 380, 120869 .

AMA Style

L. Sbardella, I. Velo-Gala, J. Comas, I. Rodríguez-Roda Layret, A. Fenu, W. Gernjak. The impact of wastewater matrix on the degradation of pharmaceutically active compounds by oxidation processes including ultraviolet radiation and sulfate radicals. Journal of Hazardous Materials. 2019; 380 ():120869.

Chicago/Turabian Style

L. Sbardella; I. Velo-Gala; J. Comas; I. Rodríguez-Roda Layret; A. Fenu; W. Gernjak. 2019. "The impact of wastewater matrix on the degradation of pharmaceutically active compounds by oxidation processes including ultraviolet radiation and sulfate radicals." Journal of Hazardous Materials 380, no. : 120869.

Research article
Published: 10 January 2019 in Environmental Science & Technology Letters
Reads 0
Downloads 0

This study investigates the photodegradation kinetics of N-nitrosodimethylamine (NDMA) by the UV/S2O82⁻ process initiated by a medium pressure mercury lamp (MP-UV) in a collimated beam set-up. Experiments were carried out to characterize the kinetics in the absence and presence of bicarbonate, chloride and sulfate. The kinetic behavior adjusted well to first-order dependence and the addition of 33.6 μM S2O82– increased the NDMA removal rate by 3-4 times compared to direct photolysis leading to a reduction of one order of magnitude for every 8.2×103 J m–2 fluence. In the range investigated the reaction rate increased linearly with peroxodisulfate concentration. The presence of inorganic carbon and chloride can negatively affect the efficiency of both, the UV/S2O82⁻ and the conventional UV/H2O2 process. Yet, given that the reaction rate constants of Cl⁻ and HCO3⁻ with the •OH radical are one and three orders of magnitude higher than with SO4•⁻, their scavenging effect is less pronounced in the UV/S2O82⁻ process. In conclusion, the UV/S2O82⁻ process efficiently removes NDMA from water even containing low concentration of HCO3– and Cl– anions such as reverse osmosis permeates.

ACS Style

Inmaculada Velo-Gala; Maria Jose Farre; Jelena Radjenovic; Wolfgang Gernjak. N-Nitrosodimethylamine (NDMA) Degradation by the Ultraviolet/Peroxodisulfate Process. Environmental Science & Technology Letters 2019, 6, 106 -111.

AMA Style

Inmaculada Velo-Gala, Maria Jose Farre, Jelena Radjenovic, Wolfgang Gernjak. N-Nitrosodimethylamine (NDMA) Degradation by the Ultraviolet/Peroxodisulfate Process. Environmental Science & Technology Letters. 2019; 6 (2):106-111.

Chicago/Turabian Style

Inmaculada Velo-Gala; Maria Jose Farre; Jelena Radjenovic; Wolfgang Gernjak. 2019. "N-Nitrosodimethylamine (NDMA) Degradation by the Ultraviolet/Peroxodisulfate Process." Environmental Science & Technology Letters 6, no. 2: 106-111.

Journal article
Published: 01 August 2018 in Applied Clay Science
Reads 0
Downloads 0

This work is aimed at studying the utilization of bentonite and vermiculite as a photocatalyst in the individual and simultaneous degradation of sulfamethoxazole (SMX) and trimethoprim (TMP) by UV and solar light radiation. The clays were characterized by various analytical techniques, and it was corroborated that the photoactivity and textural properties of clays remained unaffected by the UV radiation. The band gap energy (Eg) of both clays was less than 4 eV, revealing that they could behave as semiconductor materials and could act as photoactive materials in the presence of UV radiation. The photodegradation rate and the maximum percentage of degradation for SMX and TMP were markedly enhanced by the presence of the clays. The reaction rate constant for SMX and TMP degradation in UV radiation was increased 11.4 and 46.4 times, respectively, when 10 mg of vermiculite were added to the UV system. Better degradation results were observed by using vermiculite, and this trend could be attributed to the higher percentage of doping ions in the vermiculite. In the UV radiation and UV/Clay systems, the rate constants for single degradation were faster than those for simultaneous degradation of SMX and TMP; this was due to the competition of SMX and TMP for the generated oxidant radicals. The photoactivity of the reutilized clays was similar to that of the original clays.

ACS Style

J.I. Martínez-Costa; J. Rivera-Utrilla; R. Leyva-Ramos; M. Sánchez-Polo; Inmaculada Velo-Gala. Individual and simultaneous degradation of antibiotics sulfamethoxazole and trimethoprim by UV and solar radiation in aqueous solution using bentonite and vermiculite as photocatalysts. Applied Clay Science 2018, 160, 217 -225.

AMA Style

J.I. Martínez-Costa, J. Rivera-Utrilla, R. Leyva-Ramos, M. Sánchez-Polo, Inmaculada Velo-Gala. Individual and simultaneous degradation of antibiotics sulfamethoxazole and trimethoprim by UV and solar radiation in aqueous solution using bentonite and vermiculite as photocatalysts. Applied Clay Science. 2018; 160 ():217-225.

Chicago/Turabian Style

J.I. Martínez-Costa; J. Rivera-Utrilla; R. Leyva-Ramos; M. Sánchez-Polo; Inmaculada Velo-Gala. 2018. "Individual and simultaneous degradation of antibiotics sulfamethoxazole and trimethoprim by UV and solar radiation in aqueous solution using bentonite and vermiculite as photocatalysts." Applied Clay Science 160, no. : 217-225.

Journal article
Published: 01 June 2018 in Journal of Photochemistry and Photobiology A: Chemistry
Reads 0
Downloads 0

The aim of this study was to compare the effectiveness of advanced oxidation processes (AOPs) based on Fenton and Fenton-like reagents with Solar and UV radiation (UV, UV/H2O2, Solar, Solar/H2O2, UV/H2O2/Fe2+, UV/H2O2/Fe3+, Solar/H2O2/Fe2+ and Solar/H2O2/Fe3+) for the single and simultaneous degradation of the antibiotics sulfamethoxazole (SMX) and trimethoprim (TMP) in aqueous solution. For direct photolysis processes, the degradation rate of SMX was highly enhanced, whereas that of TMP was slightly reduced, when the solution pH was increased from 3 to 12. The different photolytic behavior of SMX and TMP was investigated by DFT calculations, estimating in both cases the relative energies of the ground singlet state, the first excited singlet state, and the first triplet state. SMX triplet state is about 21 Kcal mol−1 above the TMP triplet state, which justifies the higher photodegradation obtained for SMX. The removal percentages of both antibiotics in the photo-Fenton and photo-Fenton-like systems were much greater than those in the conventional Fenton processes. Additionally, in both photo-Fenton processes, the degradation rates of SMX and TMP were faster by applying UV radiation than solar radiation. Complete mineralization of SMX was achieved in UV/H2O2 process; however, the Solar/H2O2/Fe3+ system yielded a maximum extent of mineralization of 42% for TMP. SMX and TMP photodegradation by-products were identified in UV, UV/H2O2, Solar, and Solar/H2O2/Fe3+ systems. The removal percentages and rates of degradation of SMX and TMP were influenced by the water matrix. It was shown that the Solar/H2O2/Fe3+ system yielded the highest removal percentage of TMP in surface water and of SMX in ground water. A high degree of SMX and TMP mineralization was obtained with both UV/H2O2 and Solar/H2O2/Fe3+systems, but the by-products were 50% less toxic with the latter system. The removal percentage and reaction rate for the single antibiotic degradation were reduced when both antibiotics were degraded simultaneously, attributable to the competition of SMX and TMP for the hydroxyl radicals generated when both pollutants are present.

ACS Style

J.I. Martínez-Costa; J. Rivera-Utrilla; R. Leyva-Ramos; M. Sánchez-Polo; I. Velo-Gala; A.J. Mota. Individual and simultaneous degradation of the antibiotics sulfamethoxazole and trimethoprim in aqueous solutions by Fenton, Fenton-like and photo-Fenton processes using solar and UV radiations. Journal of Photochemistry and Photobiology A: Chemistry 2018, 360, 95 -108.

AMA Style

J.I. Martínez-Costa, J. Rivera-Utrilla, R. Leyva-Ramos, M. Sánchez-Polo, I. Velo-Gala, A.J. Mota. Individual and simultaneous degradation of the antibiotics sulfamethoxazole and trimethoprim in aqueous solutions by Fenton, Fenton-like and photo-Fenton processes using solar and UV radiations. Journal of Photochemistry and Photobiology A: Chemistry. 2018; 360 ():95-108.

Chicago/Turabian Style

J.I. Martínez-Costa; J. Rivera-Utrilla; R. Leyva-Ramos; M. Sánchez-Polo; I. Velo-Gala; A.J. Mota. 2018. "Individual and simultaneous degradation of the antibiotics sulfamethoxazole and trimethoprim in aqueous solutions by Fenton, Fenton-like and photo-Fenton processes using solar and UV radiations." Journal of Photochemistry and Photobiology A: Chemistry 360, no. : 95-108.

Journal article
Published: 01 September 2017 in Chemical Engineering Journal
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; J.A. Pirán-Montaño; J. Rivera-Utrilla; M. Sánchez-Polo; Antonio J. Mota. Advanced Oxidation Processes based on the use of UVC and simulated solar radiation to remove the antibiotic tinidazole from water. Chemical Engineering Journal 2017, 323, 605 -617.

AMA Style

Inmaculada Velo-Gala, J.A. Pirán-Montaño, J. Rivera-Utrilla, M. Sánchez-Polo, Antonio J. Mota. Advanced Oxidation Processes based on the use of UVC and simulated solar radiation to remove the antibiotic tinidazole from water. Chemical Engineering Journal. 2017; 323 ():605-617.

Chicago/Turabian Style

Inmaculada Velo-Gala; J.A. Pirán-Montaño; J. Rivera-Utrilla; M. Sánchez-Polo; Antonio J. Mota. 2017. "Advanced Oxidation Processes based on the use of UVC and simulated solar radiation to remove the antibiotic tinidazole from water." Chemical Engineering Journal 323, no. : 605-617.

Journal article
Published: 01 June 2017 in Applied Catalysis B: Environmental
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sánchez-Polo; J. Rivera-Utrilla. Role of activated carbon surface chemistry in its photocatalytic activity and the generation of oxidant radicals under UV or solar radiation. Applied Catalysis B: Environmental 2017, 207, 412 -423.

AMA Style

Inmaculada Velo-Gala, Jesús J. López Peñalver, M. Sánchez-Polo, J. Rivera-Utrilla. Role of activated carbon surface chemistry in its photocatalytic activity and the generation of oxidant radicals under UV or solar radiation. Applied Catalysis B: Environmental. 2017; 207 ():412-423.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sánchez-Polo; J. Rivera-Utrilla. 2017. "Role of activated carbon surface chemistry in its photocatalytic activity and the generation of oxidant radicals under UV or solar radiation." Applied Catalysis B: Environmental 207, no. : 412-423.

Review
Published: 01 March 2017 in Journal of Colloid and Interface Science
Reads 0
Downloads 0

The interest in the use of nanoporous carbon materials in applications related to energy conversion and storage, either as catalysts or additives, has grown over recent decades in various disciplines. Since the early studies reporting the benefits of the use of nanoporous carbons as inert supports of semiconductors and as electron acceptors that enhance the splitting of the photogenerated excitons, many researchers have investigated the key role of carbon matrices coupled to all types of photoactive materials. More recently, our group has demonstrated the ability of semiconductor-free nanoporous carbons to convert the absorbed photons into chemical reactions (i.e. oxidation of pollutants, water splitting, reduction of surface groups) opening new opportunities beyond conventional applications in light energy conversion. The aim of this paper is to review the recent progress on the application of nanoporous carbons in photochemistry using varied illumination conditions (UV, simulated solar light) and covering their role as additives to semiconductors as well as their use as photocatalysts in various fields, describing the photochemical quantum yield of nanoporous carbons for different reactions, and discussing the mechanisms postulated for the carbon/light interactions in confined pore spaces.

ACS Style

Alicia Gomis-Berenguer; Leticia Fernandez Velasco; Inmaculada Velo-Gala; Conchi O. Ania. Photochemistry of nanoporous carbons: Perspectives in energy conversion and environmental remediation. Journal of Colloid and Interface Science 2017, 490, 879 -901.

AMA Style

Alicia Gomis-Berenguer, Leticia Fernandez Velasco, Inmaculada Velo-Gala, Conchi O. Ania. Photochemistry of nanoporous carbons: Perspectives in energy conversion and environmental remediation. Journal of Colloid and Interface Science. 2017; 490 ():879-901.

Chicago/Turabian Style

Alicia Gomis-Berenguer; Leticia Fernandez Velasco; Inmaculada Velo-Gala; Conchi O. Ania. 2017. "Photochemistry of nanoporous carbons: Perspectives in energy conversion and environmental remediation." Journal of Colloid and Interface Science 490, no. : 879-901.

Journal article
Published: 23 November 2016 in Molecules
Reads 0
Downloads 0

The photocorrosion of a nanoporous carbon photoanode, with low surface functionalization and high performance towards the photoelectrochemical oxidation of water using simulated solar light, was investigated. Two different light configurations were used to isolate the effect of the irradiation wavelength (UV and visible light) on the textural and chemical features of the carbon photoanode, and its long-term photocatalytic performance for the oxygen evolution reaction. A complete characterization of the carbon showed that the photocorrosion of carbon anodes of low functionalization follows a different pathway than highly functionalized carbons. The carbon matrix gets slightly oxidized, with the formation of carboxylic and carbonyl-like moieties in the surface of the carbon anode after light exposure. The oxidation of the carbon occurred due to the photogeneration of oxygen reactive species upon the decomposition of water during the irradiation of the photoanodes. Furthermore, the photoinduced surface reactions depend on the nature of the carbon anode and its ability to photogenerate reactive species in solution, rather than on the wavelength of the irradiation source. This surface modification is responsible for the decreased efficiency of the carbon photoanode throughout long illumination periods, due to the effect of the oxidation of the carbon matrix on the charge transfer. In this work, we have corroborated that, in the case of a low functionalization carbon material, the photocorrosion also occurs although it proceeds through a different pathway. The carbon anode gets gradually slightly oxidized due to the photogeneration of O-reactive species, being the incorporation of the O-groups responsible for the decreased performance of the anode upon long-term irradiation due to the effect of the oxidation of the carbon matrix on the electron transfer.

ACS Style

Alicia Gomis-Berenguer; Inmaculada Velo-Gala; Enrique Rodríguez-Castellón; Conchi O. Ania. Surface Modification of a Nanoporous Carbon Photoanode upon Irradiation. Molecules 2016, 21, 1611 .

AMA Style

Alicia Gomis-Berenguer, Inmaculada Velo-Gala, Enrique Rodríguez-Castellón, Conchi O. Ania. Surface Modification of a Nanoporous Carbon Photoanode upon Irradiation. Molecules. 2016; 21 (11):1611.

Chicago/Turabian Style

Alicia Gomis-Berenguer; Inmaculada Velo-Gala; Enrique Rodríguez-Castellón; Conchi O. Ania. 2016. "Surface Modification of a Nanoporous Carbon Photoanode upon Irradiation." Molecules 21, no. 11: 1611.

Journal article
Published: 01 November 2016 in Science of The Total Environment
Reads 0
Downloads 0

Gamma radiation has been used to induce the degradation of compounds used as plasticizers and herbicides such as phthalic acid (PA), bisphenol A (BPA), diphenolic acid (DPA), 2,4-dichlorophenoxy-acetic acid (2,4-D), and 4-chloro-2-methylphenoxyacetic acid (MCPA) in aqueous solution, determining the dose constants, removal percentages, and radiation-chemical yields. The reaction rate constants of hydroxyl radical (HO), hydrated electron (eaq(-)) and hydrogen atom (H) with these pollutants were also obtained by means of competition kinetics, using 3-aminopyridine and atrazine as reference compounds. The results indicated that the elimination of these pollutants with gamma radiation mainly follows the oxidative pathway through reaction with HO radicals. The degradation by-products from the five pollutants were determined, detecting that the hydroxylation of the corresponding parent compounds was the main chemical process in the degradation of the pollutants. Moreover, a high decrease in the chemical oxygen demand has been observed for all pollutants. As expected, the degradation by-products generated by the irradiation of PA, BPA and DPA showed a lower toxicity than the parent compounds, however, in the case of 2,4-D and MCPA irradiation, interestingly, their by-products were more toxic than the corresponding original compounds.

ACS Style

José Rivera-Utrilla; Mahmoud M. Abdel Daiem; Manuel Sánchez-Polo; Raul Ocampo Perez; Jesús J. López Peñalver; Inmaculada Velo-Gala; Antonio J. Mota. Removal of compounds used as plasticizers and herbicides from water by means of gamma irradiation. Science of The Total Environment 2016, 569-570, 518 -526.

AMA Style

José Rivera-Utrilla, Mahmoud M. Abdel Daiem, Manuel Sánchez-Polo, Raul Ocampo Perez, Jesús J. López Peñalver, Inmaculada Velo-Gala, Antonio J. Mota. Removal of compounds used as plasticizers and herbicides from water by means of gamma irradiation. Science of The Total Environment. 2016; 569-570 ():518-526.

Chicago/Turabian Style

José Rivera-Utrilla; Mahmoud M. Abdel Daiem; Manuel Sánchez-Polo; Raul Ocampo Perez; Jesús J. López Peñalver; Inmaculada Velo-Gala; Antonio J. Mota. 2016. "Removal of compounds used as plasticizers and herbicides from water by means of gamma irradiation." Science of The Total Environment 569-570, no. : 518-526.

Journal article
Published: 01 March 2016 in Journal of Environmental Management
Reads 0
Downloads 0

This study analyzed the overall adsorption rate of metronidazole, dimetridazole, and diatrizoate on activated carbons prepared from coffee residues and almond shells. It was also elucidated whether the overall adsorption rate was controlled by reaction on the adsorbent surface or by intraparticle diffusion. Experimental data of the pollutant concentration decay curves as a function of contact time were interpreted by kinetics (first- and second-order) and diffusion models, considering external mass transfer, surface and/or pore volume diffusion, and adsorption on an active site. The experimental data were better interpreted by a first-order than second-order kinetic model, and the first-order adsorption rate constant varied linearly with respect to the surface area and total pore volume of the adsorbents. According to the diffusion model, the overall adsorption rate is governed by intraparticle diffusion, and surface diffusion is the main mechanism controlling the intraparticle diffusion, representing >90% of total intraparticle diffusion.

ACS Style

J.V. Flores-Cano; M. Sánchez-Polo; J. Messoud; Inmaculada Velo-Gala; Raul Ocampo Perez; J. Rivera-Utrilla. Overall adsorption rate of metronidazole, dimetridazole and diatrizoate on activated carbons prepared from coffee residues and almond shells. Journal of Environmental Management 2016, 169, 116 -125.

AMA Style

J.V. Flores-Cano, M. Sánchez-Polo, J. Messoud, Inmaculada Velo-Gala, Raul Ocampo Perez, J. Rivera-Utrilla. Overall adsorption rate of metronidazole, dimetridazole and diatrizoate on activated carbons prepared from coffee residues and almond shells. Journal of Environmental Management. 2016; 169 ():116-125.

Chicago/Turabian Style

J.V. Flores-Cano; M. Sánchez-Polo; J. Messoud; Inmaculada Velo-Gala; Raul Ocampo Perez; J. Rivera-Utrilla. 2016. "Overall adsorption rate of metronidazole, dimetridazole and diatrizoate on activated carbons prepared from coffee residues and almond shells." Journal of Environmental Management 169, no. : 116-125.

Journal article
Published: 01 March 2016 in Journal of Photochemistry and Photobiology A: Chemistry
Reads 0
Downloads 0
ACS Style

A.M.S. Polo; Jesús J. López Peñalver; M. Sánchez-Polo; J. Rivera-Utrilla; Inmaculada Velo-Gala; Jacob Josafat Salazar-Rábago. Oxidation of diatrizoate in aqueous phase by advanced oxidation processes based on solar radiation. Journal of Photochemistry and Photobiology A: Chemistry 2016, 319-320, 87 -95.

AMA Style

A.M.S. Polo, Jesús J. López Peñalver, M. Sánchez-Polo, J. Rivera-Utrilla, Inmaculada Velo-Gala, Jacob Josafat Salazar-Rábago. Oxidation of diatrizoate in aqueous phase by advanced oxidation processes based on solar radiation. Journal of Photochemistry and Photobiology A: Chemistry. 2016; 319-320 ():87-95.

Chicago/Turabian Style

A.M.S. Polo; Jesús J. López Peñalver; M. Sánchez-Polo; J. Rivera-Utrilla; Inmaculada Velo-Gala; Jacob Josafat Salazar-Rábago. 2016. "Oxidation of diatrizoate in aqueous phase by advanced oxidation processes based on solar radiation." Journal of Photochemistry and Photobiology A: Chemistry 319-320, no. : 87-95.

Journal article
Published: 01 April 2015 in Mediterranean Journal of Chemistry
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. Role of activated carbon on micropollutants degradation by different radiation processes. Mediterranean Journal of Chemistry 2015, 4, 68 -80.

AMA Style

Inmaculada Velo-Gala, Jesús J. López-Peñalver, Manuel Sánchez-Polo, José Rivera-Utrilla. Role of activated carbon on micropollutants degradation by different radiation processes. Mediterranean Journal of Chemistry. 2015; 4 (2):68-80.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. 2015. "Role of activated carbon on micropollutants degradation by different radiation processes." Mediterranean Journal of Chemistry 4, no. 2: 68-80.

Journal article
Published: 01 February 2015 in Microporous and Mesoporous Materials
Reads 0
Downloads 0
ACS Style

M. Sánchez-Polo; Inmaculada Velo-Gala; Jesús J. López Peñalver; J. Rivera-Utrilla. Molecular imprinted polymer to remove tetracycline from aqueous solutions. Microporous and Mesoporous Materials 2015, 203, 32 -40.

AMA Style

M. Sánchez-Polo, Inmaculada Velo-Gala, Jesús J. López Peñalver, J. Rivera-Utrilla. Molecular imprinted polymer to remove tetracycline from aqueous solutions. Microporous and Mesoporous Materials. 2015; 203 ():32-40.

Chicago/Turabian Style

M. Sánchez-Polo; Inmaculada Velo-Gala; Jesús J. López Peñalver; J. Rivera-Utrilla. 2015. "Molecular imprinted polymer to remove tetracycline from aqueous solutions." Microporous and Mesoporous Materials 203, no. : 32-40.

Journal article
Published: 01 April 2014 in Chemical Engineering Journal
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sanchez-Polo; José Rivera-Utrilla. Comparative study of oxidative degradation of sodium diatrizoate in aqueous solution by H2O2/Fe2+, H2O2/Fe3+, Fe (VI) and UV, H2O2/UV, K2S2O8/UV. Chemical Engineering Journal 2014, 241, 504 -512.

AMA Style

Inmaculada Velo-Gala, Jesús J. López Peñalver, M. Sanchez-Polo, José Rivera-Utrilla. Comparative study of oxidative degradation of sodium diatrizoate in aqueous solution by H2O2/Fe2+, H2O2/Fe3+, Fe (VI) and UV, H2O2/UV, K2S2O8/UV. Chemical Engineering Journal. 2014; 241 ():504-512.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sanchez-Polo; José Rivera-Utrilla. 2014. "Comparative study of oxidative degradation of sodium diatrizoate in aqueous solution by H2O2/Fe2+, H2O2/Fe3+, Fe (VI) and UV, H2O2/UV, K2S2O8/UV." Chemical Engineering Journal 241, no. : 504-512.

Journal article
Published: 01 February 2014 in Carbon
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. Role of activated carbon on micropollutans degradation by ionizing radiation. Carbon 2014, 67, 288 -299.

AMA Style

Inmaculada Velo-Gala, Jesús J. López-Peñalver, Manuel Sánchez-Polo, José Rivera-Utrilla. Role of activated carbon on micropollutans degradation by ionizing radiation. Carbon. 2014; 67 ():288-299.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. 2014. "Role of activated carbon on micropollutans degradation by ionizing radiation." Carbon 67, no. : 288-299.

Journal article
Published: 01 February 2014 in Carbon
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. Surface modifications of activated carbon by gamma irradiation. Carbon 2014, 67, 236 -249.

AMA Style

Inmaculada Velo-Gala, Jesús J. López-Peñalver, Manuel Sánchez-Polo, José Rivera-Utrilla. Surface modifications of activated carbon by gamma irradiation. Carbon. 2014; 67 ():236-249.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López-Peñalver; Manuel Sánchez-Polo; José Rivera-Utrilla. 2014. "Surface modifications of activated carbon by gamma irradiation." Carbon 67, no. : 236-249.

Journal article
Published: 01 October 2013 in Applied Catalysis B: Environmental
Reads 0
Downloads 0
ACS Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sanchez-Polo; J. Rivera-Utrilla. Activated carbon as photocatalyst of reactions in aqueous phase. Applied Catalysis B: Environmental 2013, 142-143, 694 -704.

AMA Style

Inmaculada Velo-Gala, Jesús J. López Peñalver, M. Sanchez-Polo, J. Rivera-Utrilla. Activated carbon as photocatalyst of reactions in aqueous phase. Applied Catalysis B: Environmental. 2013; 142-143 ():694-704.

Chicago/Turabian Style

Inmaculada Velo-Gala; Jesús J. López Peñalver; M. Sanchez-Polo; J. Rivera-Utrilla. 2013. "Activated carbon as photocatalyst of reactions in aqueous phase." Applied Catalysis B: Environmental 142-143, no. : 694-704.