ON SOME FEATURES OF OZONE TREATMENT OF GROUND WATERS

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

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Flouride and Nitrate Status of Some Ground Waters in Chittor District of Rajasthan State (India)

International Journal of Emerging Research in Management and Technology ◽

10.23956/ijermt.v6i9.95 ◽

2018 ◽

Vol 6 (9) ◽

pp. 119

Author(s):

Trapti Sharma ◽

R. P. Nagar ◽

R. C. Gaur ◽

Pooja Gupta ◽

Charanjit Kaur

Keyword(s):

Point Of View ◽

World Health ◽

Indian Council ◽

Standard Methods ◽

Ground Waters ◽

Drinking Waters ◽

Health Organization ◽

Research World ◽

Drinking Purpose

In Rajasthan state the ground waters of some areas like Ramganj-mandi, Morak, Barmer, Jaisalmer, Chittor and Udaipur etc. are susceptible from drinking point of view.To test the quality of groundwater in Chittor district 14, ground water samples were collected from various places and analyzed for pH, E.C., Fluoride and Nitrate parameters by standard methods (A.P.H. A., Washington, USA, 1995). The study revealed that none of the ground waters was found suitable completely from drinking point of view. Some are having electrical conductivity > 1.4 dS/m, some are having pH >8.5, some area having fluoride >1.5 ppm and some are having nitrate>45 ppm. These are the limits of various parameters permitted by various International authorities like Bureau of Indian Standard, Indian Council of Medical Research,world health Organization etc. for drinking waters. So, it is recommended to the residents of above areas to use water for drinking purpose only after reverse osmosis or adopting suitable method of removing excess of Fluoride and Nitrate for drinking water to avoid unwanted pathogenic diseases harmful for human health.

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ASPECTS OF SURFACE AND GROUND WATERS POLLUTION DUE TO THE MINERAL OIL ACTIVITIES

Environmental Engineering and Management Journal ◽

10.30638/eemj.2004.074 ◽

2004 ◽

Vol 3 (4) ◽

pp. 733-736

Author(s):

Camelia Capatina ◽

Gheorghe Lazar

Keyword(s):

Mineral Oil ◽

Ground Waters

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Showing the vegetation cover of flood-plains and river valleys on the Vegetation Map of Kazakhstan and middle Asia

Geobotanical mapping ◽

10.31111/geobotmap/1993.58 ◽

1995 ◽

pp. 58-66

Author(s):

N. M. Kalibernova

Keyword(s):

Plant Communities ◽

Vegetation Cover ◽

Flood Plain ◽

Vegetation Map ◽

Flood Plains ◽

Additional Information ◽

Ground Waters ◽

The Matrix ◽

River Valleys ◽

Former Ussr

The fragment of the legend of the map concerning the vegetation of flood- plains and river-valleys in the subzones of northern and southern deserts is presented in the article. The map is compiled in Department of Vegetspon Geography and Cartography of Komarov Botanical Institute by a large team of botanists-geographers of the former USSR. The nature environments determining the development of vegetation of river-valleys in arid climate are conditioned by the intrazonal factors (alluvial and flood processes) at the background of natural zonal factors. Contrasts of environments and corresponding plant communities manifest themselves first of all. Mineralization of ground waters, salinity of soils, including the alluvial ones, are of essential importance. The practice of vegetation mapping of unstable habitats, to which floodplain landscapes belong, has shown that units of phytocoenological classification is of little use for this purpose. The heterogeneity of vegetation, consisting of short-term unstable serial communities generates a need for typification of space combinations of such phytocoenoses. For this purpose it is convenient to use generalized ecological-dinamic series, including plant communities of all levels within the limits of definite segment of valley. These series are the mapping units on the map. The vegetation of the first terrace is also nessecary to include in a single series with flood-plain vegetation because it has supplementary influence of ground waters. The higher divisions of the legend are based on zonal characters: vegetation of valleys in northern, middle and southern deserts. 13 numbers are used to show the vegetation cover of flood-plains and valleys. Additional 7 numbers are used for the out-of-valley meadow vegetation. The content is enriched by using of the letters by the numbers showing the geographic variants of series and ciphers for combination of series and out-of-series communities. The text legend is supplemented by the matrix (table), showing the subordination of subtitles, zonal position and geographic distribution of divisions. The types of series in the matrix are listed with indication of the main dominant species that gives the additional information on the legend divisions. The author's conclusion is that valley vegetation reveals clearly the zonal features, correlating with zonal (desert) vegetation.

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