Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
-
Aníbal Maury Ramirez
and
Nele De Belie
Abstract
Under certain environmental conditions, autoclaved aerated concrete has evidenced serious problems due to the easy growth of micro-organisms such as algae. In order to prevent this situation, traditional preventive practices such as water repellents and biocide agents have been studied. Nevertheless, these efforts have not led to a complete elimination of the problem. Based on the evidence that TiO2 decomposes organic compounds belonging to the cell wall of living micro-organisms such as algae and the promising results obtained with porous lavas as supports for TiO2 in water treatments, experiments to evaluate the algicidal activity of titanium dioxide on autoclaved aerated concrete samples have been executed using a recently developed equipment for extra-accelerated algae growth on cementitious materials. After five weeks, by means of visual inspection, colorimetric and image analyses, it was estimated that in relation to some reference samples (without TiO2), TiO2 coated samples evidenced partial photodegradation of algae species (Chlorella vulgaris).
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
- Design of CeyCoxTi (1-x) O3+δ Perovskite for Photocatalysis: A Statistical Study
- Electro-Fenton Treatment of TNT in Aqueous Media in Presence of Cyclodextrin. Application to Ex-situ Treatment of Contaminated Soil
- A Quantum Mechanical Approach to TiO2 Photocatalysis
- Removal of Color Compounds from Recycled Water Using Combined Activated Carbon Adsorption and AOP Decomposition
- Preparation of Co-doped TiO2 for Photocatalytic Degradation of NOx in Air under Visible Light
- Depletion of Several Antibiotics Used in Industrial Process Using Immobilized TiO2
- Oxidative Pretreatment of Fresh and Mature Landfill Leachate
- Titanium Dioxide onto Polyethylene for Water Decontamination
- Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
- Photocatalytic Treatment of A Dye Polluted Industrial Effluent With A Solar Pilot-Scale CPC Reactor
- Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
- Degradation of 4-n-nonylphenol in Water by 20 kHz Ultrasound
- Integration of Photocatalysis with Ultrafiltration or Membrane Distillation for Removal of Azo Dye Direct Green 99 from Water
- Binder Effect on Photocatalytic Performance of TiO2 Solution Coating Layers
- Rhodamine B Discolouration on TiO2 in the Cement Environment: A Look at Fundamental Aspects of the Self-cleaning Effect in Concretes
- Effects of Inorganic Anions and Humic Acid on the Photocatalytic and Ozone Oxidation of Oxytetracycline in Aqueous Solution
