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    Wyświetlanie 1-9 z 9
    Tytuł:
    The Distribution of Metals in Sediments of the Likova, Kumanova and Pçinja Rivers: Spring Season
    Autorzy:
    Ejupi, N.
    Korça, B.
    Durmishi, B. H.
    Durmishi, A.
    Ejupi, E.
    Ismaili, M.
    Jashari, A.
    Shabani, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/123812.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    metals
    pollution
    physical-chemical parameters
    sediments
    river water
    Opis:
    The pollution of rivers is an important issue because the utilization of polluted water has a direct effect on the health of people and other living beings, economy, etc. Sediments represent a very suitable indicator for monitoring and detecting pollution sources of river waters. The aim of this study is to analyze the contents of selected metals in the sediments of the rivers Likova, Kumanova and Pçinja rivers. The water samples were taken in June 2014 from six sampling stations. Several physicochemical parameters of rivers were determined and the contents of twenty-two metals was indicated in the sediment samples taken from these rivers. The obtained physico-chemical quality of the water from these rivers resulted in classification to the first/second category. The sediments were mostly polluted by Al, Ca, Na and Mg. The metals that exceeded the Dutch standard were: Ba, Ni, Zn, Cr and Cu. The order of metals in sediments was as follows: Fe > Al > Ca > Na > Mg > K > Mn > Ba > Sr > Cr > Zn > V > Ni > Cu > Pb > Li. The study results reveal a mild pollution in rivers caused by urban, agricultural and industrial activities.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 3; 80-92
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the Physico-Chemical and Microbiological Parameters of the Water Quality in the Batllava Lake, Kosovo
    Autorzy:
    Kashtanjeva, Albana
    Vehapi, Idriz
    Kurteshi, Kemajl
    Paçarizi, Musaj
    Powiązania:
    https://bibliotekanauki.pl/articles/2173369.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Batlava Lake
    monitoring
    physical-chemical parameters
    microbiological parameters
    heavy metals
    Opis:
    The purpose of this study was to determine the quality of water in lake Batllava, through which, a part of the population of the Pristina region is supplied with drinkable water. Lake Batlava is a lake built in the 1970s. This lake is located in the village of Batlava in the municipality of Podujeva. The supply of this lake with water is made from the Brvenica river. Monitoring was finished during the period from December 2020 to May 2021. The sample were taken in three championic places: at the entrance of the lake, in the middle and in the spill, on two levels, in the surface and at depth of 30 cm. The analyzed microbiological parameters are: total coliforms, fecal coliforms, fecal streptococci and aerobic mesophilic bacteria. The physical-chemical parameters are: dissolved oxygen, saturation with O2, water temperature, pH value, electrical conductivity, total soluble matter, total suspended matter, turbidity, chemical demand for oxygen, biochemical demand for oxygen, total organic carbon, nitrate, total solidity of calcium, magnesium, ammonia ion, chloride, sulphates, fluurite, M-alkalines, bicarbonates and heavy metals, such as: Fe, Pb, Mn, Cu, Cd. The results showed that most physical-chemical and microbiological parameters are within the limit allowed by the WHO and EPA, except in some cases where during the precipitation season there have been several overruns and for this reason, it is recommended to take monthly monitoring of the water of Lake Batllava to achieve a real assessment.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 9; 231--240
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the quality of shallow groundwaters on the occurrence of selected relic plant species of peatlands in the Łęczna-Włodawa Lakeland
    Autorzy:
    Serafin, Artur
    Pogorzelec, Magdalena
    Bronowicka-Mielniczuk, Urszula
    Powiązania:
    https://bibliotekanauki.pl/articles/292495.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    groundwater quality
    peatlands
    physical-chemical parameters
    relic species
    shallow groundwaters
    Opis:
    The aim of the study was to compare the physical-chemical quality parameters of shallow groundwater quality in peat bogs of the Łęczna-Włodawa Lake District in the context of the occurrence of selected boreal species of plant relics: dwarf birch (Betula humilis Schrank), downy willow (Salix lapponum L.) and swamp willow (Salix myrtylloides L.). Analyzes of shallow groundwater quality parameters included physical-chemical parameters: reaction (pH), electrolytic conductivity (EC), dissolved organic carbon (DOC), total nitrogen (TN), ammonium nitrogen (NH4), nitrite nitrogen (NO2), nitrate nitrogen (NO3), total phosphorus (TP), phosphate (PO4), sulfate (SO2), sodium (Na), potassium (K), calcium (Ca) and magnesium (Mg) by certified laboratory tests. It was found that the natural hydrochemical specification of peat bogs is characterized by fluctuations associated with the dynamics of internal metabolism of peat ecosystems without the visible impact of anthropopressure. This is confirmed by the concentration of nutrients: TN at the study sites were within a broad range of mean values: 16.92–45.31 mg·dm–3; NH4 (0.55–0.76 mg·dm–3); NO2 (0.06–4.33 mg·dm–3); and NO3 did not exceed 0.2 mg·dm–3, and concentration of TP adopted mean values in a range of 0.22–0.42 mg·dm–3. The studied physical-chemical factors of shallow groundwater were within the habitat preferences of the studied species, but in differentiated qualitative and quantitative ways determined optimal conditions for building the population of the studied species. Particularly values of TP lower than other obtained values in a range of: 0.08–0.32 mg·dm–3; PO4 = 0.1 mg·dm–3; TN = 2.2–21.2 mg·dm–3; NH4 = 0.1–0.46 mg·dm–3; DOC = 24.6–55.9 mg·dm–3, as well as higher than average pH values in a range of: 5.34–5.95 and concentration of Ca = 5.67–28.1 mg·dm–3 and Mg = 0.56–2.41 mg·dm–3, as well as EC = 72.1–142.3 μS·cm–1 can be treated as a condition favouring proper development of the population of dwarf birch. For Salix lapponum: a reduced level of values of nitrogen fractions (TN = 3.01–18.84 mg·dm–3; NH4 = 0.1–0.41 mg·dm–3), a reduced level of values of phosphorus fractions (TP = 0.09–0.44 mg·dm–3; PO4 = 0.1–0.44 mg·dm–3), part of ions (Ca = 4.39–19.63 mg·dm–3; Mg = 0.77–3.37 mg·dm–3), pH = 5.9–6.4, EC = 124–266 μS·cm–1 and DOC = 24.1–57.5 mg·dm–3. For the equally studied Salix myrtylloides, such conditions were met by: TP = 0.1–0.41 mg·dm–3; PO4 = 0.1–0.18 mg·dm–3, DOC = 27.5–50.9 mg·dm–3, pH = 5.3–5.94 and EC = 62.2–139.3 μS·cm–1.
    Źródło:
    Journal of Water and Land Development; 2020, 45; 133-142
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical-chemical characterisation of the urban wastewater - case study of the Boumerdes region, North - Algeria
    Autorzy:
    Ait Baziz, Djalal
    Maazouzi, Abdelhak
    Lachache, Salih
    Powiązania:
    https://bibliotekanauki.pl/articles/2174372.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    Boumerdes
    physical-chemical parameters
    pollution
    urban wastewater
    water quality standards
    Opis:
    The objective of this study is to assess the physical-chemical quality of urban wastewater from the city of Boumerdès, in northern Algeria with regard to the threshold values for irrigation or their discharge in aquatic ecosystems. Five sampling points were carried out of the study area in April 2017. The results obtained of physical-chemical parameters indicating pollution show that the water course is exposed to pollution mainly of organic origin. It’s expressed by a high maximum value according to Algerian and World Health Organisation standards: chemical oxygen demand (COD 886 mg O2∙dm-3), biochemical oxygen demand (BOD5 490 mg O2∙dm-3), nitrate (NO3- 73.09 mg∙dm-3), nitrite (NO2- 6 mg∙dm-3), ammonium (NH4+ 23 mg∙dm-3) and phosphates (PO43- 7.3 mg∙dm-3). The COD to BOD5 rate of 1.8, show that the effluents must be treated before being discharged into the receiving environment. However, it is lower than 2, which makes them easily biodegradable and can be treated by a biological system such as a natural lagoon. It shows also a diversified origin of the pollution. It is predominantly domestic origin, it could have an adverse effect on public health, presenting a risk of environmental eutrophication, contamination of soil and water resources. The physical-chemical characterisation of the urban wastewater shows that they are quite loaded and prezent a pollution in nitrogenous compounds, a treatment is requested before the direct discharge to the receiving environment or their reuse in the irrigation.
    Źródło:
    Journal of Water and Land Development; 2022, 54; 243--250
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of chemical parameters of groundwater before and after sand filtration in the Velekinca water treatment plant, Kosovo
    Autorzy:
    Beluli, Valdrin M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1844369.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    groundwater treatment plant
    ion-sand particle chain
    physical-chemical parameters
    sand filtration
    WHO standard
    Opis:
    Our scientific research is based on the monitoring of ions before and after filtration of groundwaters in the water plant of Velekinca in the municipality of Gjilan, Kosovo. Sandy filters are the most commonly used industrial filters in surface – and groundwater industries. The reason is their low construction cost and high processing capacity. In our scientific research, sand filters used in the plant do not have perfect filtration, so we can monitor results before filtration (BF) and after filtration (AF) by determining the concentration of some ions and molecules. The following average concentrations have described: Ca2+ (BF: 83.42, AF: 83.19) mg·dm–3, Mg2+ (BF: 35.59, AF: 34.35) mg·dm–3, Cl– (BF: 28.018, AF: 28.73) mg·dm–3, SO42– (BF: 42.76, AF: 44.46) mg·dm–3, HCO3– (BF: 410.9, AF: 404.81) mg·dm–3, A-HCl (BF: 6.73, AF: 6.63) ml-HCl, GH (BF: 19.94, AF: 19.62) °dH, CS (BF: 18.87, AF: 18.5) °dH and NO2– (BF: 0.0033, AF: 0.0022) mg·dm–3. Being scientific researchers in the field of water treatment technology, we have concluded that ions create an affinity for sand particles. They attach to each other by creating an ion-sand particle physical chain. According to our scientific research, sand filters are difficult to guarantee a high quality of water processing.
    Źródło:
    Journal of Water and Land Development; 2021, 48; 122-129
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aspects of Chemical Characterisation of Leachables Profile from Ultra-Light Knitting Textiles for Uses as Medical Implants in Urogynaecology and General Surgery
    Aspekty charakterystyki chemicznej substancji wymywalnych z ultralekkich dzianin o potencjalnym zastosowaniu jako implantowalne wyroby medyczne stosowane w urologinekologii i chirurgii ogólnej
    Autorzy:
    Jóźwicka, J.
    Gzyra-Jagieła, K
    Struszczyk, M. H.
    Gutowska, A.
    Ciechańska, D.
    Krucińska, I
    Powiązania:
    https://bibliotekanauki.pl/articles/232383.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    ultra-light textile implants for urogynaecology
    evaluation of chemical leachable profile
    physical-chemical parameters
    substancje wymywalne z ultralekkich dzianin
    wyroby medyczne
    implanty w urologii
    Opis:
    Ultra-light textiles (knitwear) designed as implantable medical devices for potential uses in urogynaecology (treatment procedures in women incontinence and vagina reconstructions) and general surgery (hernia treatments) are a response to the increasing demand for advanced medical devices in medicine. Chemical profile characterisation of leachable substances is an important factor in the use of the materials influencing their biocompatibility. The implant is made of undesired chemical substances in the main raw-material, and penetration into the tissue may cause local and/or systemic inflammation in the patient’s body. The characterisation and analysis of such substances is therefore essential to secure the safe use of implants. Most important is the characterisation of the matter that is extractable from the designed medical devices. To serve these purpose, ultra-light textile implants designed for potential use in urogynaecology and general surgery were examined concerning the chemical analysis of the undesired substance contained in the main material which constitutes the base of the implant. It was a goal of the work to set optimal parameters for the examination of chemical characterisation of the leachable implant’s material, bearing in mind their safe clinical use. Analysis of the chemical leachable profile was made in accordance with directives of standard PN-EN ISO 10993-18:2008 and some Polish and European testing procedures.
    Artykuł przedstawia innowacyjne ultra-lekkie implanty włókiennicze w postaci dzianiny z przeznaczeniem na implanty do potencjalnego zastosowania w urologinekologii i chirurgii ogólnej (procedury zaopatrywania przepuklin nietrzymania moczu u kobiet i plastyki pochwy). Badano własności?? charakterystyki substancji wymywalnych z projektowanych implantów. Ultralekkie dzianiny poddano ocenie czystości chemicznej pod kątem wpływu ewentualnych substancji wymywalnych na ich bezpieczeństwo kliniczne. Wyznaczono optymalne parametry badań czystości chemicznej implantowalnych wyrobów medycznych. Oceny czystości chemicznej wyselekcjonowanych dzianin dokonano w oparciu o metody badawcze opracowane na podstawie wytycznych normy PN-EN ISO 10993-18:2008: „Biologiczna ocena wyrobów medycznych – Część 18: Charakterystyka chemiczna materiałów” (ISO 10993-18:2009) oraz opracowanych procedur badawczych na bazie normatywów polskich i europejskich.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2012, 6B (96); 128-134
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Anoxic Condition on the Composition of Microorganisms Colonized a Contemporary Wood Samples in Archaeological Site in Biskupin
    Wpływ warunków beztlenowych na skład mikroorganizmów zasiedlających współczesne drewno na stanowisku archeologicznym w Biskupinie
    Autorzy:
    Gajewska, J.
    Jacak, P.
    Babiński, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/388224.pdf
    Data publikacji:
    2011
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    bakterie
    grzyby mikroskopowe
    kolonizacja drewna
    parametry fizykochemiczne
    Biskupin
    bacteria
    microscopic fungi
    wood colonization
    physical and chemical parameters
    Opis:
    From 2003 year a research project was initiated in Biskupin with monitoring of physical, chemical and microbiological parameters of deposed archaeological wood in wet peat soil on sp1 and sp4 sites. In this paper colonization by microorganisms of a temporary oak wood (Quercus sp.) and pine wood (Pinus sylvestris L.) deposed during four years in the similar anoxic conditions in flooded sites were observed. The results of the performed investigations showed on an interesting microbial community as colonizators of wood samples, outside and inside them, including a lignocellulotic bacteria and microscopic fungi, responsible for wood decomposition, and pathogenic, toxinogenic microorganisms, eg: Pseudomonas aeruginosa, Aeromonas hydrophila / caviae, Clostridium perfringens bacteria and Aspergillus fumigatus, Penicillium spp., and Candida spp. fungi.
    Od wielu lat na stanowiskach archeologicznych obronnego osiedla kultury łużyckiej z VIII w. p.n.e. w Biskupinie prowadzone są badania fizykochemiczne, mikrobiologiczne i konserwatorskie zabytkowego drewna archeologicznego. W celu rozpoznania zagrożeń mikrobiologicznych, na jakie wciąż narażone jest to zabytkowe drewno, badania mikrobiologiczne rozszerzono o współczesne drewno dębu (Quercus sp.) i sosny (Pinus sylvestris L.), przechowywane przez 4 lata w warunkach anoksji w glebie torfowej na stanowiskach sp1 i sp4. Stwierdzono różnorodność glebowych względnie i bezwzględnie beztlenowych kolonizatorów, np. celulolitycznych bakterii i grzybów mikroskopowych, zdolnych do rozkładu drewna, a także patogenów, np. Pseudomonas aeruginosa, Aeromonas hydrophila/caviae, Clostridium perfringens oraz grzybów Aspergillus fumigatus, Penicillium spp. i Candida spp.
    Źródło:
    Ecological Chemistry and Engineering. A; 2011, 18, 2; 183-190
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Water quality and ichthyofauna habitat conditions in Lake Czolnowskie (N-W Poland)
    Autorzy:
    Brysiewicz, Adam
    Czerniejewski, Przemysław
    Kozioł, Agnieszka
    Rogacki, Michał
    Dąbrowski, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/1430196.pdf
    Data publikacji:
    2020
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    drainage area
    surface waters
    soil
    fish
    Lake Czolnowskie
    physical and chemical parameters
    obszar drenażowy
    wody powierzchniowe
    gleba
    ryby
    jezioro Czołnowskie
    parametry fizyko-chemiczne
    Opis:
    Increasing anthropopressure affects natural ecosystems and may express itself in regional or spot contamination of water and soil environment. The quality of ground and surface waters depends to a large extent on drainage area management, where biogenic substances (i.e. nitrogen, phosphorus and potassium) are transported with surface run-offs to the environment. The article discusses results of studies on the drainage area of Lake Czolnowskie (Zachodniopomorskie Province). Studies covered physical and chemical assessment of soil conditions and water quality; additionally, fish was caught using two independent methods - gillnets and power generator (pursuant to CEN EN 14011 2003 and PN-EN 14011 2006). Results obtained confirm regular run-off of biogenic materials from the surface of farmed drainage area to Lake Czolnowskie. During the period of studies, the reservoir was exposed to i.e. reduction of water oxygen (3.56 mg/dm3) and permanently elevated level of general phosphorus (0.15-0.27 mg/dm3) and ammonium acid (0.16-0.27 mg/dm3), which degraded the quality of life for ichthyofauna inhabiting the lake.
    Źródło:
    Chemistry-Didactics-Ecology-Metrology; 2020, 25, 1-2; 113-123
    2084-4506
    Pojawia się w:
    Chemistry-Didactics-Ecology-Metrology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the temperature of different combustion zones in the boiler grate on changes in physical and chemical parameters of bituminous coal and slags
    Autorzy:
    Rompalski, P.
    Róg, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/91909.pdf
    Data publikacji:
    2016
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    physical parameters
    chemical parameters
    mercury
    boiler grate
    bituminous coal
    slag
    parametry fizyczne
    parametry chemiczne
    rtęć
    ruszt kotła
    węgiel kamienny
    żużel
    Opis:
    This paper presents the results of a study on the influence of the temperature of characteristic zones of coal combustion in a stoker fired boiler (drying, degassing, and burn-out), on changes in physical and chemical parameters of bituminous coal and slags. This information is important as it helps identify the impact of coal properties on the accumulation of trace elements, primarily mercury, in combustion waste. The study is the continuation of research work on the impact of mercury compounds accumulated in combustion waste on the natural environment (mercury from landfills of slag, and fly ash). Studies were undertaken because no in-depth analysis of the impact of the temperature of particular zones of stoker fired boilers on the physical and chemical parameters of the post-process slag, including mercury content, had been reported in literature. Both of the coals examined, classified as bituminous coal according to the International Classification of Seam Coals and of type 32.1 according to the PN-G97002:1982 standard, showed an average mercury content of 0.0849 mg/g. In the chemical composition determined for the ash derived from burnt coal, the dominance of SiO2 and Al2O3 over other oxides was found. This feature results in the increase of the softening temperature and ash melting and, therefore, during the combustion of coal tested in a stoker fired boiler, only ash was subjected to the sintering process. Mercury content in the other examined samples taken from various locations of the stoker fired boiler (drying – 32-1050 ºC, degassing – 1050-1020 ºC, and burn-out – 1020-400 ºC) varied from 0.0668 to 0.0009 mg/g and was determined with the use of a LECO atomic absorption spectrometer. The analyses of the elemental composition, performed with the application of XRF spectrometry, for ash obtained from samples collected from different sampling points of the stoker fired boiler showed that the largest concentration of trace elements was observed for the ash derived from the samples collected in the degassing zone (temperature range 1050-850 ºC).
    Źródło:
    Journal of Sustainable Mining; 2016, 15, 2; 66-72
    2300-1364
    2300-3960
    Pojawia się w:
    Journal of Sustainable Mining
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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