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Assessment of Water Microbiologic Pollution in Durres＇s Marine Harbour Basin, Albania

Journal of Life Sciences 2010年第4期4卷 32-38页

作者： Laura Gjyli Lindita Mukli Department of Medicine and Nursing University ＂Aleksander Moisiu＂ Durres Durres Albania Department of Mathematics University ＂Aleksander Moisiu＂ Durres Durres Albania

The aim of this study is to assess the water microbiologic pollution in Durres＇s Harbour basin and to compare it with European standards. The comparison of heterotrophs and total coliforms level in sampling are the essence of this research. The object of this study is done in four sampling areas of Durres＇s Harbour basin. In order to compare the level of water microbiologic pollution in four areas of Durres＇s Harbour basin, control area is also studied which is a beach area near the Harbour named Apollonia Beach. The sampling areas were： Ferry Terminal （FT）, Fishery Harbor （FH）, East Zone （EZ）, Fuel Quay （FQ） and Apollonia Beach （AB）, respectively. The period of sample-taking was July-October 2008. The strategy used for this purpose consisted in water insemination with coverage method by means of Petri＇s plates according to respective dilutions in culture media Plate Count Agar （PCA） for heterotrophs and MacConkey for total coliforms. The number of colonies that are formed determines the number of cells at the moment of water insemination, the number of heterotrophs in culture media PCA, respectively. The number of pink and red colonies that were formed determines the number of cells at the moment of water insemination, the number of total coliforms in culture media MacConkey, respectively. The measure ofheterotrophic bacteria and total coliforms used is Colony-Forming Units （CFU）/100 mL seawater. （AB） is within European standards. The richest area with heterotrophs is （FH）, which confirms the fact that it is the most polluted microbiologic area in the Harbour basin of Durres. The richest area with total coliforms is （FT）. The poorest area with heterotrophs and total coliforms is （FQ）.

关键词： Assessment water microbiologic pollution heterotrophic bacteria total coliforms Durres's Marine Harbour basin.

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Kinetics of Treated Domestic Sewage Disinfection through Catalytic Oxidation with H2O2

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Journal of Chemistry and Chemical Engineering 2011年第11期5卷 995-1001页

作者： Gean Delise Leal Pasquali Vargas Deisi Spricigo Humberto Jorge Joss Regina de Fatima Peralta Muniz Moreira Department of Chemical and Food Engineering Federal University of Santa Catarina Campus Universit6rio-TrindadeFlorian6polis 88040-900 Brazil

The inactivation of bacterial cells through catalyzed oxidation using hydrogen peroxide as the primary oxidant agent is dependent on a series of factors, such as the concentration of the catalyst, the rate of hydroxyl radical formation in the controlled decomposition of the oxidant agent, and the concentration and toxicity of hydrogen peroxide. The objective of this study was to develop a mathematical model able to predict the kinetics of the inactivation Escherichia coli and total coliforms cells present in treated domestic sewage through catalytic peroxidation. The catalyst used was iron oxide supported on mineral coal （called CP）, and the effects of the operational conditions, including hydrogen peroxide concentration and dosage of catalyst, were evaluated. The results showed that the disinfection kinetics of the treated domestic sewage is dependent on the concentrations of hydrogen peroxide and catalyst dosage. The kinetic model was shown to be able to predict the behavior of the inactivation kinetics of the bacterium Escherichia coli ATCC-25922 when different concentrations of hydrogen peroxide （75 and 100 mg·L^-1） were used, regardless of the catalyst dosage.

关键词： Disinfection domestic sewage kinetics catalytic oxidation Escherichia coli total coliforms

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The Bacterial Load of Hospital Discharges(Sidi Kacem,Morocco)

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Advances in Microbiology 2013年第7期3卷 511-514页

作者： Sanae Sadek F.Benel Harkati K.Elkharrim F.Jeddi I.Rhiate Moufouad M.Elmarkhi A.Khadmaoui S.Mouden Z.Dakir D.Belghyti Environment and Renewable Energy Laboratory Faculty of SciencesIbn Tofail UniversityKenitraMorocco Laboratory of Genetics and Biometry Faculty of ScienceIbn Tofail UniversityKenitraMarocoo Provincial Laboratory El Idrissi Service BacteriologyKenitraMorocco

Fecal microorganisms, which are indicators or pathogens, have an optimum growth in the specific conditions of the internal environment animal or human. Therefore, when issued by a host, they result in sudden and drastic changes in the environment. This study aims at bacteriological characterization of the effluent from the provincial hospital in Sidi Kacem. And it shows that the effluent from the hospital contributing to non-regulatory standards ultimately reaches the environment (river wadi floor, animal, vegetable...). The results of bacteriological analyses (total coliforms, Fecal coliforms) about sewage from the provincial hospital depending on the day of rest and work in the city of Sidi Kacem are presented with means respectively 557 × 104 and 328 × 104 in the rest and working days 555 × 104, 342 × 104 and the much higher maximum working days from the day of rest are 64 × 105 and 42 × 105. The results obtained show that the rate of bacteria (CT-CF) exceeds standards recommended by CNS (1994) and WHO (1996, 1997). These results have adverse effects on human life, animal, environment and ecosystem in general.

关键词： Bacteriology total coliforms Fecal coliforms Hospital Sidi Kacem Morocco

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