Fernando J. Beltrán

Bio: Fernando J. Beltrán is an academic researcher from University of Extremadura. The author has contributed to research in topics: Ozone & Hydrogen peroxide. The author has an hindex of 63, co-authored 252 publications receiving 11894 citations. Previous affiliations of Fernando J. Beltrán include Degrémont & University of Castilla–La Mancha.

Ozone Reaction Kinetics for Water and Wastewater Systems

Abstract: INTRODUCTION Ozone in Nature The Ozone Molecule REACTIONS OF OZONE IN WATER Oxidation-Reduction Reactions Cycloaddition Reactions Electrophilic Substitution Reactions Necleophilic Reactions Indirect Reactions of Ozone KINETICS OF THE DIRECT OZONE REACTIONS Homogenous Kinetecs Heterogenous Kinetics FUNDAMENTALS OF GAS-LIQUID REACTION KINETICS Physical Absorption Chemical Absorption KINETIC REGIMES IN DIRECT OZONATION REACTIONS Determination of Ozone Properties in Water Kinetic Regimes of the Ozone Decomposition Reaction Kinetic Regimes of Direct Ozonation Reactions Changes of the Kinetic Regimes During Direct Ozonation Reactions Comparison Between Absorption Theories in Ozonation Reactions KINETCS OF THE OZONATION OF WASTEWATERS Reactivity of Ozone in Wastewater Critical Concentration of Wastewater Characterization of Wastewater Importance of pH in Wastewater Ozonation Chemical Biological Processes Kinetic Study of the Ozonation of Wastewaters KINETICS OF INDIRECT REACTIONS OF OZONE IN WATER Relative Importance of the Direct Ozone-B Reaction and the Ozone Decomposition Reaction Relative Rates of the Oxidation of a Given Compound Kinetic Parameters Characterization of Natural Waters Regarding Ozone Reactivity KINETICS OF THE OZONE/HYDROGEN PEROXIDE SYSTEM The Kinetic Regime of the O3/H2O2 Process Determination of Kinetic Parameters The Ozone/Hydrogen Peroxide Oxidation of Volatile Compounds The Competition of the Direct Reaction KINETICS OF THE OZONE-UV RADIATION SYSTEM Kinetics of the UV Radiation for the Removal of Contaminants from Water Kinetics of the UV/H2O2 System Comparison between the Kinetic Regimes of the Ozone-B and Ozone-UV Photolysis Reactions HETEROGENEOUS CATALYTIC OZONATION Fundamentals of Gas-Liquid-Solid Catalytic Reaction Kinetics Kinetics of Heterogeneous Catalytic Ozone Decomposition in Water Kinetics of Heterogeneous Catalytic Ozonation of Compounds in Water Kinetics of Semiconductor Photocatalytic Processes KINETIC MODELLING OF OZONE PROCESSES Case of Slow Kinetic Regime of Ozone Absorption Case of Fast Kinetic Regime of Ozone Absorption Case of Intermediate or Moderate Kinetic Regime of Ozone Absorption Time Regimes in Ozonation Influence of the Type of Water and Gas Flows Mathematical Models Examples of Kinetic Modeling for Model Compounds Kinetic Modeling of Wastewater Ozonation Appendixes

Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering.

Abstract: 1.0. Introduction 4044 2.0. Biomass Chemistry and Growth Rates 4047 2.1. Lignocellulose and Starch-Based Plants 4047 2.2. Triglyceride-Producing Plants 4049 2.3. Algae 4050 2.4. Terpenes and Rubber-Producing Plants 4052 3.0. Biomass Gasification 4052 3.1. Gasification Chemistry 4052 3.2. Gasification Reactors 4054 3.3. Supercritical Gasification 4054 3.4. Solar Gasification 4055 3.5. Gas Conditioning 4055 4.0. Syn-Gas Utilization 4056 4.1. Hydrogen Production by Water−Gas Shift Reaction 4056

Generation and Detection of Reactive Oxygen Species in Photocatalysis

Abstract: The detection methods and generation mechanisms of the intrinsic reactive oxygen species (ROS), i.e., superoxide anion radical (•O2–), hydrogen peroxide (H2O2), singlet oxygen (1O2), and hydroxyl radical (•OH) in photocatalysis, were surveyed comprehensively. Consequently, the major photocatalyst used in heterogeneous photocatalytic systems was found to be TiO2. However, besides TiO2 some representative photocatalysts were also involved in the discussion. Among the various issues we focused on the detection methods and generation reactions of ROS in the aqueous suspensions of photocatalysts. On the careful account of the experimental results presented so far, we proposed the following apprehension: adsorbed •OH could be regarded as trapped holes, which are involved in a rapid adsorption–desorption equilibrium at the TiO2–solution interface. Because the equilibrium shifts to the adsorption side, trapped holes must be actually the dominant oxidation species whereas •OH in solution would exert the reactivity...