A5000809995- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Environmental remediation with nanomaterials
- Advanced oxidation water treatment
- Advanced Nanomaterials in Catalysis
- Adsorption and biosorption for pollutant removal
- Catalytic Processes in Materials Science
- Analytical chemistry methods development
- Radioactive element chemistry and processing
- Air Quality Monitoring and Forecasting
- Arsenic contamination and mitigation
- Selenium in Biological Systems
- Nanoparticles: synthesis and applications
- Water Quality Monitoring and Analysis
- Chromium effects and bioremediation
- Carbon and Quantum Dots Applications
- Membrane Separation Technologies
- Environmental and Cultural Studies in Latin America and Beyond
- Pickering emulsions and particle stabilization
- Graphene and Nanomaterials Applications
- Enhanced Oil Recovery Techniques
- Wastewater Treatment and Nitrogen Removal
- Nanomaterials for catalytic reactions
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
Consejo Nacional de Investigaciones Científicas y Técnicas
2010-2024
Comisión Nacional de Energía Atómica
2008-2024
Centro Atómico Constituyentes
2020-2024
National Technological University
2023
Martin University
2015
Loughborough University
2011
Advanced Oxidation Processes (AOPs) are excellent systems for remediation of contaminated wastewaters containing recalcitrant organic pollutants. The most studied AOPs photochemical-based processes (PAOPs), as UV/hydrogen peroxide, heterogeneous photocatalysis (HP), photo-Fenton (PF), UV plus ozone and combination these technologies. All based on the production very reactive species (especially hydroxyl radicals, HO˙) able to degrade or transform chemical pollutants, provoking ultimately...
For the first time, nitric oxide (NO), a precursor of nitrogen dioxide (a NIOSH-listed pollutant), has been found to be one final products photocatalytic reduction nitrate in water using TiO<sub>2</sub> and formic acid as hole scavenger.
Fil: Crespi, Julieta. Comision Nacional de Energia Atomica. Gerencia del Area Seguridad Nuclear y Ambiente. Quimica (CAC); Argentina. Universidad San Martin. Instituto Sabato; Consejo Investigaciones Cientificas Tecnicas; Argentina
The immobilization of zerovalent iron nanoparticles (nZVI) is a way to facilitate their use in continuous flow systems for the treatment aqueous pollutants. In this work, two types nZVI (powdered, NSTAR; and slurry suspended, N25) were immobilized millimetric alginate beads (AL) by coagulation, forming nanocomposites (NCs). These NCs, N25@AL NSTAR@AL, structurally studied tested Cr(VI) removal. For both NCs types, SEM analysis showed uniform distribution micron-scale agglomerates, XRD...
Nanocomposites (NCs) consisting of zero-valent iron nanoparticles (nZVI) immobilized in chitosan (CS) were prepared and employed, for the removal hexavalent chromium (Cr(VI)) from both synthetic real wastewater. Medium (MCS) high (HCS) molecular weight stabilization with carboxymethylcellulose (CMC), different nZVI load explored. Characterization through Scanning Electron Microscopy Energy Dispersive X-ray Analysis (SEM-EDS) Diffraction (XRD) revealed millimeter-sized spheres...
In this work, the comparison of 4-chlorophenol (4-CP) degradation by two different AOT processes has been performed: a) a homogeneous system with Fe(III)-NTA (1:1 complex), b) TiO2/Fe(III)-NTA heterogeneous system. both cases, NTA appears to play positive role in photochemical reaction. system, iron salt is only absorbing species and proved be able photoinduce 4-CP ([4-CP] = 0.1-0.2 mM, [FeNTA] 0.3-0.9 pH 4, lambda 365 nm). The progress reaction was positively affected FeNTA concentration,...
Dissolved inorganic nitrogen (DIN) species are key components of the cycle and main pollutants in groundwater. This study investigated interconversion removal principal DIN compounds (NO3−, NO2− NH4+) via UV light irradiation using a medium-pressure mercury lamp. The experiments were carried out systematically at relatively low concentrations (1.5 mM) varying pHs presence absence oxygen to compare reaction rates suggest mechanisms. NO3− was fully converted into pH > 3 both oxic anoxic...