Petroleum Pollutant Degradation by Surface Water Microorganisms (8 pp)

2006 ◽  
Vol 13 (5) ◽  
pp. 320-327 ◽  
Author(s):  
Mališa P. Antić ◽  
Branimir Jovancicevic ◽  
Miroslav M. Vrvić ◽  
Jan Schwarzbauer
Keyword(s):  
Surface Water ◽  
Pollutant Degradation ◽  
Petroleum Pollutant

The Toxicity of Organic Concentrates to Photobacterium Phosphoreum of River Meuse Water in the Stretch between Remilly (France) and Keizersveer (The Netherlands)

1994 ◽  
Vol 29 (3) ◽  
pp. 253-256
Author(s):  
H. J. G. Polman ◽  
D. de Zwart
Keyword(s):  
Surface Water ◽  
The Netherlands ◽  
Water Samples ◽  
Organic Pollution ◽  
Photobacterium Phosphoreum ◽  
Pollutant Degradation ◽  
Luminescent Bacteria ◽  
River Meuse ◽  
Acceptability Criteria ◽  
Xad Resin

Organic concentrates of River Meuse water were tested for toxicity with a five minutes test (Microtox*) on luminescent bacteria (Photobacterium phosphoreum). Over the year 1992, the surface water was sampled six times at seven stations in the stretch between Remilly (France) and Keizersveer (The Netherlands). Unfiltrated water samples were concentrated by neutral adsorption on XAD resin followed by elution with acetone. The measured toxicity is expressed as the concentration factor causing 20% reduction in bacterial luminescence after five minutes of exposure (EC20,5). The observed toxicity is transformed into a so called pT-value, pT=10log(EC20,5/100), relating toxicity to acceptability criteria. Along the river, the toxicity attributable to organic pollution did not reach environmentally acceptable levels. The toxicity in the French and Belgian parts of the river increased gradually to a maximum toxicity generally observed near the industrial centre Liège. In the Dutch stretch, the organic toxicity generally decreased as a consequence of lower pollutant input, pollutant degradation, or pollutant adsorption to newly formed particulates.

Application of a Simple Cold Stub to the Direct Observation of Frozen Hydrated Sand

1973 ◽  
Vol 31 ◽  
pp. 212-213
Author(s):  
John M. Wehrung ◽  
Richard J. Harniman
Keyword(s):  
United States ◽  
Surface Water ◽  
Direct Observation ◽  
Controlled Study ◽  
Clay Particles ◽  
Organic Debris ◽  
Rock Formations ◽  
Water Tables ◽  
Permeable Rock ◽  
Natural Means

Water tables in aquifer regions of the southwest United States are dropping off at a rate which is greater than can be replaced by natural means. It is estimated that by 1985 wells will run dry in this region unless adequate artificial recharging can be accomplished. Recharging with surface water is limited by the plugging of permeable rock formations underground by clay particles and organic debris.A controlled study was initiated in which sand grains were used as the rock formation and water with known clay concentrations as the recharge media. The plugging mechanism was investigated by direct observation in the SEM of frozen hydrated sand samples from selected depths.

AN EVALUATION OF SUB-SURFACE WATER QUALITY AROUND BHARUCH-SURAT INDUSTRIAL REGION, GUJARAT, INDIA

2019 ◽  
Vol 38 (2) ◽  
pp. 200-220
Author(s):  
SOMNATH SAHA ◽  
◽  
SUKANTA KUMAR SAHA ◽  
TATHAGATA GHOSH ◽  
ROLEE KANCHAN ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Industrial Region

PHYSICOCHEMICAL ANALYSIS OF GROUND WATER AND SURFACE WATER IN KOTA REGION, RAJASTHAN, INDIA

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
NITU SINGH ◽  
FATIMA SULTANA
Keyword(s):  
Surface Water ◽  
Ground Water ◽  
Growth And Development ◽  
Physicochemical Parameters ◽  
Total Dissolved Solids ◽  
Physicochemical Analysis ◽  
Total Hardness ◽  
Developing Nation ◽  
The Sustainable Development ◽  
Chloride Sulfate

India is a developing nation and is dependent on its natural resources for growth and development. Water, being one of the vital natural resource, must be used judicially for the sustainable development. Present study focuses on the analysis of physicochemical parameters (pH, Turbidity, Alkalinity, Total Hardness, Total dissolved solids, Conductivity, Chloride, Sulfate, Fluoride contents) of ground water and surface water in Kota City (Rajasthan). The study shows the adverse impact of exploitation and urbanization on water resources of Kota City (Rajasthan). Some physicochemical parameters exceed the desirable limits as defined by WHO and Indian Standards in the selected sites. The level of pollution in ground water and surface water of Kota City is increasing due to urbanization.

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