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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Remediation of mild crude oil polluted fresh water wet land with organic and inorganic fertilizer

100%
Chizoruo I. F., Onyekachi I. B., Chinaka I. C. B., Chinyelue E. M.
International Letters of Natural Sciences
|
2016
|
tom 54
Wetland pollution due to inputs from crude oil is one of the most prevalent environmental problems facing the aquatic ecosystem in the world. The present study was intended to investigate the effectiveness of combination of cow lumen and NPK fertilizer in stimulating the degradation of crude oil polluted fresh water wet land. Soil samples were collected from unpolluted plots, crude oil polluted plots and crude oil polluted plots that were treated with the remediating agents. After fifteen days and sixty days of remediation, the soil samples were analysed for pH, electrical conductivity (E.C), phosphate, PO3- 4, phosphorous, P, % organic carbon, % total nitrogen N, carbon/nitrogen ratio and total petroleum hydrocarbon, TPH. The result indicates that combination of the inorganic and organic manure was more efficient in stimulating the degradation of the crude oil than the use of either the cow lumen or NPK fertilizer alone. The physiochemical properties of the soil in all the treated plots were observed to have been improved when compared with that of the untreated plots.
2

Sorbents for preconcentration of phenols from polluted waters. Supramolecular assistance

86%
Biernat J. F., Makuch B.
Polish Journal of Environmental Studies
|
2000
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tom 09
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nr 2
New sorbents capable of forming hydrogen and it-jt bonds with phenols were prepared. These sorbents possess aromatic Tt-acceptor residues and hydrogen donor and acceptor sites. The surroundings of the sites are of different polarities. Sorption efficiency of these materials was studied by reversed-phase high performance liquid chromatography. The testing mixtures consisted of three phenols of different polarity and acidity.
3
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Biodiversity of zoosporic fungi in polluted water drainages across Niles' Delta region, Lower Egypt

72%
Ali E. H.
Acta Mycologica
|
2007
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tom 42
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nr 1
Thirty-four identified in addition to five unidentified species appertaining to ten genera of zoosporic fungi were identified and isolated from eighty four polluted water samples, which were randomly collected from different polluted sites of the water drainages along the Niles Delta in Lower Egypt. Baiting sesame seeds culture technique was employed at 20±2°C for the recovery of zoosporic fungi. The genera; Pythium and Saprolegnia (8 and 7 zoosporic fungal species, respectively) showed the broadest spectra of species diversity whereas Aqualinderella was only represented by one species (A. fermentans). Saprolegnia delica and Dictyuchus carpophorus(the greatest fungal populations) were the most dominant isolated zoosporic fungal species where they were highly occurred especially at the hyperpolluted waters with the heavy metals. These two species could be considered as indicators for the response of the structure and function of microbial communities for water pollution. Several zoosporic fungal species were rarely encountered. Both Aqualinderella fermentansand Pythium rostratumwere recovered in moderate frequency of occurrence. Water samples which had high concentrations in heavy metals were the poorest in the species diversity of zoosporic fungi. Despite that, fungal species belonging to the family Saprolegniaceaeflourished in hyper polluted water samples whilst those belonging to the family Pythiaceae predominated in more diluted water samples. Also, the prevalent species; S. delica andD. carpophoruswere not affected by heavy metals concentrations being as indicators for water pollution with the heavy metals. pH values of the polluted water samples had no influence on the occurrence of zoosporic fungi. Water samples characterized by high organic matter content and low total soluble salts were the richest in zoosporic fungal species.
4
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Diets supplemented with Mytilus galloprovincialis from polluted and non-polluted waters and their influence on zinc content in liver of rats loaded with cholesterol

72%
Jesion I., Leontowicz M., Leontowicz H., Kolnierzak M., Gralak M. A., Park Y.-S., Gorinstein S.
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
|
2014
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tom 53
Diets supplemented with Mytilus galloprovincialis from polluted and non-polluted waters and their influence on zinc content in liver of rats loaded with cholesterol. Mussels may reflect the environmental problems that the ecosystem faces. Mytilus galloprovincialis is widely used as an indicator of water pollution in biological monitoring studies. These mussels are filter feeders and may accumulate important ecosystem pollutants what in turn may pose a potential risk to other organisms in the food chain. The aim of the study was to determine zinc content in the diets supplemented with mussels from polluted and non-polluted areas and in the livers of rats fed these diets for 30 days. The zinc content in the diets with mussels from contaminated and noncontaminated waters and in rat livers was examined using a flame atomic absorption spectrophotometry (Perkin-Elmer 1100B). The slight increase in zinc content from 73.2 ±1.2 mg/ /kg in ch diet (control with 1% of cholesterol) to 77.2 ±0.5 mg/kg in the diet with mussels from polluted site was found, but zinc content in all diet was within the normal limits reviewed by McDowell (1992) – 40 to 100 ppm. Zinc content in the diet supplemented with mussels from nonpolluted site (73.7 ±3.7 mg/kg) was similar to that found in ch diet. It can be concluded that cholesterol does not affect zinc bioaccumulation. However, prolonged consumption of mussels from contaminated sites may increase accumulation of zinc in the liver of rats.
5

Distribution of heavy metals in irrigated vertisol profiles in semiarid region of Turkey

72%
Aydinalp C., Cresser M. S.
Polish Journal of Environmental Studies
|
2009
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tom 18
|
nr 4
539-545
Vertisols with swell-shrink properties comprise most of the arable land in northwestern Turkey. These soils are important for agricultural activities. Seven sites were selected to represent Vertisols irrigated with polluted water from the Ayvali Canal. The soils occur on flat to gently sloping plains of the region. The soils were formed on marl parent material under thermic temperature and xeric moisture regimes in the western Bursa plain, Turkey. Some agricultural lands in the plain were irrigated with heavily polluted water from the Ayvali Canal. This is a unique surface water source for irrigation in the studied area. The morphology, physico-chemical properties and DTPA-extractable Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn were determined in this research. The heavy metal concentrations were found in high levels in the upper horizon and decreased gradually throughout all the profiles studied. The results showed that accumulation of heavy metals in the upper horizon is due to long periods of irrigation with polluted surface water. Soil characterization was determined to provide useful information to understand the behavior of the heavy metal distribution throughout the soil profiles in the semiarid region with under intensive irrigation with polluted water.
6

Generation of polluted waters from mining wastes in a uranium deposit

72%
Groudev S. N., Spasova I. I., Nicolova M. V., Georgiev P. S.
Polish Journal of Microbiology
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2005
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tom 54
|
nr Suppl.
Dump consisting of 9500 tons of rich-in-pyrite mining wastes located in the uranium deposit Curilo, Western Bulgaria, was, after rainfall, an intensive source of acid drainage waters. These waters had a pH in the range of about 1.7-4.5 and contained radionuclides (uranium, radium), heavy metals (copper, zinc, cadmium, lead, nickel, cobalt, iron, and manganese), arsenic and sulphates in concentrations usually much higher than the relevant permissible levels for waters intended for use in the agriculture and/or industry. The generation of these polluted waters was studied under real field conditions for a period of about seven years during different climatic seasons. It was found that the dump was inhabited by a diverse microflora in which some acidophilic chemolithotrophic bacteria were the prevalent microorganisms. The solubilization of the above-mentioned pollutants from the dump material was connected mainly with the oxidation of pyrite and other sulphide minerals by these bacteria. Their activity depended on some essential environmental factors such as temperature, pH, and water, oxygen and nutrient contents in the dump.
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