Influence of Physical and Optical Parameters on 2,4-Dichlorophenol Degradation
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Bernard Bayarri
und
Santiago Esplugas
Abstract
The influence of sonicating a TiO2 suspension was studied and, in addition, the effect of the TiO2 aggregate size. 2,4-Dichlorophenol (DCP) was degraded by photocatalysis with TiO2. In a first experimental series, the suspension was prepared just stirring the photocatalyst. Then, the experimental runs were repeated but stirring and sonicating the TiO2. The sonicated suspension showed to be much more effective than the non-sonicated, and the kinetic constants were around 70% higher for DCP removal and 40% higher for total organic carbon (TOC) mineralization. The absorption and scattering coefficients and the diffuse reflectance were also determined and presented for both types of suspensions. The values were calculated by transmittance measurements for different amounts of TiO2. The values obtained were fitted to the radiative transfer equation using the Schuster–Schwarzschild approximation. In agreement with the results of the degradation experiments, it was found that the absorption coefficient was higher for the sonicated suspension.
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Artikel in diesem Heft
- Masthead
- Masthead
- Editorial
- In Honor of Alberto E. Cassano: Researcher, Engineer, and Academic
- Articles
- From Ideal Reactor Concepts to Reality: The Novel Drum Reactor for Photocatalytic Wastewater Treatment
- Synthesis, Characterization, and Comparison of Sol–Gel TiO2 Immobilized Photocatalysts
- Determination of Kinetic Parameter in a Unified Kinetic Model for the Photodegradation of Phenol by Using Nonlinear Regression and the Genetic Algorithm
- Mass Transfer and Conservation from a Finite Source to an Infinite Media
- Modelling and Simulation of Gas–liquid Hydrodynamics in a Rectangular Air-lift Reactor
- Two-Dimensional Modeling of an Externally Irradiated Slurry Photoreactor
- Role of Aspect Ratio and Joule Heating within the Fluid Region Near a Cylindrical Electrode in Electrokinetic Remediation: A Numerical Solution based on the Boundary Layer Model
- Solar Water Disinfection Using NF-codoped TiO2 Photocatalysis: Estimation of Scaling-up Parameters
- A Simple and Semi-Empirical Model to Predict THMs Generation in Water Facilities Including pH Effects
- On the Standardization of the Photocatalytic Gas/Solid Tests
- Microalgae Technology: A Patent Survey
- Influence of Physical and Optical Parameters on 2,4-Dichlorophenol Degradation
- Factors Capable of Modifying the Response of Pseudomonas aeruginosa to the Inactivation Induced by Heterogeneous Photocatalysis
- Enhanced Antibacterial Activity of CeO2 Nanoparticles by Surfactants
- Determination of Photochemical, Electrochemical and Photoelectrochemical Efficiencies in a Photoelectrocatalytic Reactor
- Correlations between Molecular Descriptors from Various Volatile Organic Compounds and Photocatalytic Oxidation Kinetic Constants
- Role of Joule Heating in Electro-Assisted Processes: A Boundary Layer Approach for Rectangular Electrodes
