Listar por autor "Ramos, Daniel R."
Mostrando ítems 1-11 de 11
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A Theoretical Study on the Mechanism of the Base-Promoted Decomposition of N-chloro,N-methylethanolamine
Ramos, Daniel R.; Castillo, Raquel; Canle, Moisés; García-Dopico, María-Victoria; Andrés, Juan; Santaballa, J. Arturo (Royal Society of Chemistry (Gran Bretaña), 2009-02-09)[Abstract] The first step of the base-promoted decomposition of N-chloro,N-methylethanolamine in aqueous solution (CH3N(Cl)CH2CH2OH + HO−→ imine + Cl− + H2O (+ CH2O) → amine + aldehyde) is investigated at the MP2/6-31++G(d,p) ... -
An Efficient Green Photo-Fenton System for the Degradation of Organic Pollutants. Kinetics of Propranolol Removal From Different Water Matrices
Remache, W.; Ramos, Daniel R.; Mammeri, Lamia; Boucheloukh, Hadjira; Marín, Zenydia; Belaidi, S.; Sehili, Tahar; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2022-01-06)[Abstract] We report on the degradation of aqueous propranolol (PRO) in a heterogeneous system with natural iron oxide (N.I.O.) and oxalic acid (OAA) under near UV–Vis irradiation. Photolysis experiments showed ca. 65% ... -
Common Reactivity and Properties of Heme Peroxidases: A DFT Study of Their Origin
Ramos, Daniel R.; Furtmüller, Paul G.; Obinger, Christian; Peña-Gallego, Ángeles; Pérez-Juste, Ignacio; Santaballa, J. Arturo (MDPI, 2023-01-28)[Abstract] Electronic structure calculations using the density-functional theory (DFT) have been performed to analyse the effect of water molecules and protonation on the heme group of peroxidases in different redox (ferric, ... -
Effect of Ionizing Radiation on Human Myeloperoxidase: Reaction With Hydrated Electrons
Ramos, Daniel R.; Fernández-Pérez, María-Isabel; Furtmüller, Paul G.; Obinger, Christian; García-Dopico, María-Victoria; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2021-11-27)[Abstract] Myeloperoxidase (MPO) is a myeloid-lineage restricted enzyme largely expressed in the azurophilic granules of neutrophils. It catalyses the formation of reactive oxygen species, mainly hypochlorous acid, ... -
Inactivation of E. Coli and S. Aureus by Novel Binary Clay/Semiconductor Photocatalytic Macrocomposites Under UVA and Sunlight Irradiation
Aguilar, Silvio D.; Guerrero Sánchez, Briggitte Alexandra; Benítez, Ángel; Ramos, Daniel R.; Santaballa, J. Arturo; Canle, Moisés; Rosado, Daniel; Moreno-Andrés, Javier (Elsevier, 2023-09-08)[Abstract] The disinfection efficiency of several novel photocatalytic macrocomposites made of Ecuadorian clay mixed with two semiconductor materials (TiO2, ZnO) has been evaluated with Staphylococcus aureus and Escherichia ... -
Mechanical Stability Is Key for Large-Scale Implementation of Photocatalytic Surface-Attached Film Technologies in Water Treatment
Ramos, Daniel R.; Iazykov, M.; Fernández-Pérez, María-Isabel; Santaballa, J. Arturo; Canle, Moisés (Frontiers, 2021-10-18)[Abstract] Replacement of classical tertiary water treatment by chemical-free sunlight-driven photocatalytic units has been often proposed. Photocatalysts are required to be cost-effective, inert, chemically stable, reusable, ... -
Preparation, Characterization and Testing of a Bulky Non-supported Photocatalyst for Water Pollution Abatement
Aguilar, Silvio D.; Ramos, Daniel R.; Santaballa, J. Arturo; Canle, Moisés (Elsevier, 2023-03-15)[Abstract] An innovative bulky photocatalyst for water decontamination has been developed. The semiconductor (TiO2) is homogeneously distributed in an aggregating material through the whole piece. This design prevents the ... -
Reaction Mechanism of the Enzymatic Chlorination of Amino Compounds Catalyzed by the Myeloperoxidase-Hydrogen Peroxide-Chloride Ion System
Ramos, Daniel R. (2020)[Abstract] Myeloperoxidase is a key enzyme of the immune system, quite abundant in neutrophils. It is actively involved in the protection against exogenous microorganisms and represents a significant factor in the development ... -
Removal of Emerging Pollutants by a 3-Step System: Hybrid Digester, Vertical Flow Constructed Wetland and Photodegradation Post-treatments
Sánchez Núñez, Marta; Ramos, Daniel R.; Fernández-Pérez, María-Isabel; Aguilar, Silvio D.; Ruiz, Isabel; Canle, Moisés; Soto, Manuel (Elsevier, 2022-06-22)[Abstract] The removal of emerging pollutants from municipal wastewater was studied for the first time using a three-step pilot-scale system: 1) hybrid digester (HD) as first step, 2) subsurface vertical flow constructed ... -
Solar-Assisted Photodegradation of Pesticides Over Pellet-Shaped TiO2-Kaolin Catalytic Macrocomposites at Semi-pilot-Plant Scale: Elucidation of Photo-Mechanisms and Water Matrix Effect
Jiménez Bautista, Karla Cecilia; Gascó, Antonio; Ramos, Daniel R.; Palomo, E.; Muelas-Ramos, Virginia; Canle, Moisés; Hermosilla, Daphne; Bahamonde Santos, Ana María (Elsevier, 2023-10-11)[Abstract] The behavior of novel pellet-shaped bulky titania-kaolin photocatalysts is herein evaluated for its application in the solar-assisted photocatalytic treatment of a bio-recalcitrant pesticide mix (imidacloprid, ... -
Understanding the Mechanism of Base-Assisted Decomposition of (N-halo),N-alkylalcoholamines
Andrés, Juan; Armesto Barbeito, Xosé Luís; Canle, Moisés; García-Dopico, María-Victoria; Ramos, Daniel R.; Santaballa, J. Arturo (Royal Society of Chemistry (Gran Bretaña), 2003-09-29)[Abstract] The base-assisted decomposition of (N-X),N-methylethanolamine (X = Cl, Br) takes place mainly through two concurrent processes: a fragmentation and an intramolecular elimination. The global process follows second ...
