Algicides
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. AÃÃo de algicidas sobre microalgas de efeito antiestÃtico em embalagens de Ãgua engarrafada
The depth waters impound can show some micro seaweed development, favoring the biofilms formation by the favorable hygienic conditions and light incidence. Then, adequate hygienic procedures that avoid the formation or that remove the biofilms will contribute to the quality preservation of the bottled waters. The samples were formed of water packages with al
Publicado em: 2004
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2. Effect of Several Algicides and Surfactants on the Filamentous Bacterium Leucothrix mucor Oersted
Leucothrix mucor Oersted, the primary cause of filamentous gill disease in cultured shrimp, was treated with algicides and surfactants by a serial dilution method. It was found to be highly sensitive to those algicides containing quaternary ammonium compounds. Copper-containing compounds and Formalin were less effective, whereas potassium permanganate and tw
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3. Bactericidal and Algicidal Properties of Some Algicides for Swimming Pools
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4. Laboratory Comparison of the Effectiveness of Several Algicides on Isolated Swimming Pool Algae
The most frequently encountered species of algae found in swimming pools in the Phoenix metropolitan area were used to evaluate the laboratory effectiveness of five commercially available pool chemicals used for algal control. The pool algae used were the xanthophyte Pleurochloris pyrenoidosa, the chlorophyte Oocystis sp., and the cyanophytes Phormidium minn
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5. Novel Derivatives of 9,10-Anthraquinone Are Selective Algicides against the Musty-Odor Cyanobacterium Oscillatoria perornata
Musty “off-flavor” in pond-cultured channel catfish (Ictalurus punctatus) costs the catfish production industry in the United States at least $30 million annually. The cyanobacterium Oscillatoria perornata (Skuja) is credited with being the major cause of musty off-flavor in farm-raised catfish in Mississippi. The herbicides diuron and copper sulfate, cu
American Society for Microbiology.
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6. Factors in the Testing and Application of Algicides
A review is presented of some of the factors affecting the laboratory testing and practical applications of chemicals toxic to algae. The basic factor demonstrated is that the amount of chemical required to inhibit the growth of algae is dependent on the amount of algae present and not on the volume of water in which the algae are dispersed. It is shown how
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7. Effect of Algicidal Quaternaries on the Germicidal Activity of Chlorine on Swimming Pool Water
The Swimming Pool Water Disinfectant Test Method of the Association of Official Analytical Chemists was used to determine the effect of the accepted level of 2 ppm of some commercial quaternary ammonium algicides on the germicidal activity of chlorine. Accurate determinations on the amounts of residual available chlorine in chlorine-quaternary mixtures could
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8. Pseudomonas aeruginosa for the Evaluation of Swimming Pool Chlorination and Algicides
Concentrations of ammonia and the chlorine stabilizer, cyanuric acid, which could be expected in swimming pools decreased the rate of kill by chlorine of the potential pathogen, Pseudomonas aeruginosa. The effect of cyanuric acid increased as the concentration of chlorine decreased, a fact of significance from a public health view. Quaternary ammonium algcid