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The aim of this work is to investigate the hydrogen generation from hydrothermal water by using hydrogen sulfide as a reducer. The effects of reaction temperature, reaction time and the initial pH value of reaction solution on the production of hydrogen from hydrothermal water were investigated. The experimental results showed that hydrogen was produced from water when the reaction temperature was...
Titanium dioxide nanotubes were prepared and used as catalyzers for titanium dioxide nanotubes/UV/O3 to degrade humic acid. And the optimal parameters of titanium dioxide nanotubes/UV/O3 were investigated. The combined treatment showed the synergetic effect of photocatalysis and ozonation. When calcined at 400degC, titanium dioxide nanotubes had the best catalysis for photocatalytic ozonation. With...
Magnesium-ammonium-phosphate precipitation method (MAP) is a newly-developed technique to remove ammonia nitrogen from wastewater. In this study, MAP method has been studied by using MgCl2-6H2O and Na2HPO4-12H2O as precipitators for treating highly concentrated ammonia nitrogen wastewater. The effect of pH value, formulas of precipitation and precipitator ratio on MAP precipitation efficiency has...
This paper investigated the catalytic ozonation of aqueous nitrobenzene (NB) in the presence of nano-TiO2/zeolite. The removal efficiency of NB was increased from ozone alone at 12.57% to in the present of catalyst at 33.76%, significantly. The optimum calcination temperature of nano-TiO2/zeolite was found out at 600degC. Catalytic ozonation of nitrobenzene was first order reaction with respect to...
An algicidal bacterium numbered FDD1 caused rapid cell lysis of Microcystisaeruginosa. It was identified as Brevibacillus sp. according to physiological identification and the 16S rDNA sequence analysis. Its algae-lysing characteristics were studied. The results showed that the strain FDD1 had pronounced algicidal effects and the temperature, pH and illumination could influence the algicidal efficiency...
The inactivation of Copepod with available oxidants such as chlorine, chlorine dioxide, ozone and potassium permanganate were investigated under various working conditions of different oxidant dosage, organic substance content and pH value. The results showed that chlorine dioxide might be most effective to inactivate Copepod than other oxidants and complete inactivation effect may be attained by...
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