Summary of engineering-scale experiments for the Solar Detoxification of Water project
This report contains a summary of large-scale experiments conducted at Sandia National Laboratories under the Solar Detoxification of Water project. The objectives of the work performed were to determine the potential of using solar radiation to destroy organic contaminants in water by photocatalysis and to develop the process and improve its performance. For these experiments, we used parabolic troughs to focus sunlight onto glass pipes mounted at the trough's focus. Water spiked with a contaminant and containing suspended titanium dioxide catalyst was pumped through the illuminated glass pipe, activating the catalyst with the ultraviolet portion of the solar spectrum. The activated catalyst creates oxidizers that attack and destroy the organics. Included in this report are a summary and discussion of the implications of experiments conducted to determine: the effect of process kinetics on the destruction of chlorinated solvents (such trichloroethylene, perchloroethylene, trichloroethane, methylene chloride, chloroform and carbon tetrachloride), the enhancement due to added hydrogen peroxide, the optimal catalyst loading, the effect of light intensity, the inhibition due to bicarbonates, and catalyst issues.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5430538
- Report Number(s):
- SAND92-0385; ON: DE92013776
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CHLORINATED ALIPHATIC HYDROCARBONS
DETOXIFICATION
ORGANIC CHLORINE COMPOUNDS
PARABOLIC TROUGH COLLECTORS
TESTING
CARBON TETRACHLORIDE
CATALYSIS
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTORS
CHLOROFORM
GROUND WATER
METHYLENE CHLORIDE
ORGANIC WASTES
PHOTOLYSIS
SOLAR THERMAL CONVERSION
TITANIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONCENTRATING COLLECTORS
CONVERSION
DECOMPOSITION
ENERGY CONVERSION
EQUIPMENT
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
KINETICS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARABOLIC COLLECTORS
PHOTOCHEMICAL REACTIONS
REACTION KINETICS
SOLAR COLLECTORS
SOLAR ENERGY CONVERSION
SOLAR EQUIPMENT
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTES
WATER
CSP
Concentrating Solar Power
140909* - Solar Thermal Utilization- Miscellaneous Solar Applications- (1980-)
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)