Wszystkie pola: water temperature - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Thermal and Oxygen Conditions in Carp Ponds During the Summer Period
Autorzy:: Wiśnios, M.
Kanownik, W.
Powiązania:: https://bibliotekanauki.pl/articles/124350.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: fish pond
dissolved oxygen
water temperature
Opis:: The work presents changes of oxygen indices in carp ponds during the summer season. The basis of the research were regular water tests conducted in two ponds: Mydlniki II intended for carp farming in the second year of fish production cycle and Bocian used for carp farming in the third (final) year of breeding. The temperature of pond water in July and August was optimal for development and farming of cyprinid fish and ranged from 16.6 to 30.5 °C. The lowest value of oxygen dissolved in water (6.4 mg·dm sup>-3) was registered in Mydlniki II pond and was higher than the oxygen optimum for carp (5 mg·dm sup>-3). Oxygen saturation in water of fish ponds exceeded the optimum upper limit value (168%) on a few dates, however, it posed no lethal threat for fish. In August in Bocian pond oxygen saturation fell within the range of optimal values, creating better conditions for fish development. In the secondary pond (Mydlniki II) it was found that oxygen saturation in water on 12 dates was lower than the low optimal value (96%).
Źródło:: Journal of Ecological Engineering; 2015, 16, 5; 144-150
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impact of Water Stress and Temperature on Metabolites and Essential Oil of Rosmarinus officinalis (Phytochemical Screening, Extraction, and Gas Chromatography)
Autorzy:: Laftouhi, Abdelouahid
Eloutassi, Noureddine
Drioua, Soufiane
Ech-Chihbi, Elhachmia
Rais, Zakia
Abdellaoui, Abdelfattah
Taleb, Abdslam
Beniken, Mustapha
Taleb, Mustapha
Powiązania:: https://bibliotekanauki.pl/articles/24201782.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: climate change
primary metabolites
secondary metabolites
essential oil yield
Rosmarinus officinalis
Opis:: Currently, climate change is disrupting life on Earth by causing imbalances in the biosphere. This work aimed to evaluate the impact of climate change on the content of primary and secondary metabolites and the yield of essential oil of Rosmarinus officinalis. Thus, the results of the conducted experiment show that the content of primary metabolites decreased with increasing temperature and decreasing precipitation along the experiment(proteins from 7.61% to 7.14%, carbohydrates from 6.92% to 5.64%, fats from 1.48% to 1.29% and dietary fiber from 4.96% to 4.22% and mineral composition: Ca from 7.67% to 5.98%, Mg from 8.61% to 7.01%, Fe from 7.53% to 7.21% and Mn from 6.85% to 3.97%), and the content of secondary metabolites increased in the second year when increasing the temperature by 5 °C and water stress by 50% (coumarin from 6.59% to 10.99%, saponins from 7.15% to 8.46%, tannin from 3.92% to 5.95%, alkaloids from 6.69% to 15.62% and flavonoid from 8.02% to 15.75%),but in the fourth year when the temperature continued to increase and water stress was 75% the content of secondary metabolites decreased (coumarin from 10.99% to 8.27%, saponins from 8.46% to 7.87%, tannin from 5.95% to 4.85%, alkaloids from 15.62% to 10.68% and flavonoid from 15.75% to 11.36%)and the same results were obtained for the yield of essential oil which increased in the second year and decreased in the fourth year. This GC analysis of the three essential oil samples shows that the majority of compounds in the three essential oils studied are cineole (S1:45.98%, S2:55.36%, S3:43.08%) followed by camphor (S1:17.44%, S2:21.44%, S3:21.56%) and Alpha-pinene (S1:9.30%, S2:8.34%, S3: 9.17%) and other compounds in low percentage.
Źródło:: Journal of Ecological Engineering; 2023, 24, 5; 237--248
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of the Impact of the Air Temperature on Water Consumption for Household Purposes in Rural Households
Autorzy:: Bergel, Tomasz
Młyńska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/1839163.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: rural household
water consumption
household purposes
indoor water use
air temperature
Opis:: The paper presents a research hypothesis assumed that the air temperature affects the amount of the water consumption per capita for household purposes (indoor water use). Investigations were conducted based on daily water meter readings of several rural households located in Mszana Górna and Włostowice (Southern Poland). Owing to the double water consumption metering, it was possible to determine the daily water consumption in households, separately for household purposes and for additional purposes. In the performed analysis, the correlation between the average daily air temperature and daily water consumption per capita was tested. For this purpose, correlation coefficients were determined and a 95% confidence interval was assumed. The obtained results showed lack of a clear dependence between the tested variables. Depending on the household, correlation coefficients indicate the existence of a correlation from slight, by weak to moderate. In addition, it was tested that the growth of the air temperature by 1°C caused an increase of the water consumption per capita in the range of 0.14 dm3•d-1•C-1•°C-1 and 1.17 dm3•d-1•C-1•°C-1 (Mszana Górna) and 0.41 dm3•d-1•C-1•°C-1 and 1.78 dm3•d-1•C-1•°C-1 (Włostowice). It can be concluded that often rapid growth of the water consumption in households in spring and summer season and the term of “water consumption per capita” used in this case, primarily concern greater water demand for additional purposes, not for residents’ household purposes.
Źródło:: Journal of Ecological Engineering; 2021, 22, 3; 289-302
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Effect of Bioaugmentation Strategy on the SBR Performance Treating Reject Water and Municipal Wastewater Under Various Temperature Conditions
Autorzy:: Szaja, Aleksandra
Szulżyk-Cieplak, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/1955439.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: activated sludge
Archaea
bioaugmentation
reject water
temperature fluctuation
Opis:: In this study, the effect of bioaugmentation on the sequencing batch reactor (SBR) performance while treating municipal wastewater and reject water under various temperature conditions was examined. Two lab-scale SBRs, each with the active volume of 8 L were used to perform this research. For bioaugmentation, a mixture of wildliving Bacteria and Archaea in a dose 0.25 mL was added to SBR A, while SBR B was a control one. Both reactors were fed with a mixture of wastewater and 13% v/v reject water. During the experiment, 5 phases with different temperature range were distinguished, each one lasted 14 d. The temperatures were investigated in 5°C increments, i.e. 20, 25, 30, 25 and 20°C. The obtained results indicated that in the bioaugmented reactor (SBR A), lower concentrations of NH4+–N, TSS, NO2-–N in effluent were observed as compared to control (SBR B). While for NH4+–N, regardless the temperature, the observed differences were statistically significant. Importantly, in both SBRs, the process was carried out in a stable way.
Źródło:: Journal of Ecological Engineering; 2021, 22, 7; 46-56
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of Bioaugmentation Strategy of Activated Sludge on the Co-Treatment of Reject Water and Municipal Wastewater at a Decreasing Temperature
Autorzy:: Szaja, Aleksandra
Szulżyk-Cieplak, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/125053.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioaugmentation
reject water
SBR
decreasing temperature
Archaea
Opis:: In the present study, the influence of bioaugmentation strategy on the co-treatment of 13% v/v reject water and municipal wastewater at a decreasing temperature was evaluated. The experiment was performed in two identical laboratory sequencing batch reactors with the active volume of 8 L. Each one was operated using a 12-hour cycle at sludge retention time of 3 d. The SBR A was bioaugmented with a mixture of wild-living bacteria and Archaea in a dose 0.25 ml. In turn, the comparative reactor (SBR B) was non-bioaugmented, the Archaea product was replaced with an equal volume of dechlorinated tap water. The experiment was divided into 3 phases, each with a different temperature range (20, 15 and 10°C). The temperature reduction did not adversely affect the process performance in the bioaugmented and non-bioaugmented system. Significant removal efficiencies were achieved in both SBRs. The major differences were observed for the COD content in the bioaugmented SBR at a temperature of 10°C. In this case, statistically lower concentrations in the effluent were observed in the bioaugmented system than in the non-bioaugmented one. Additionally, at a temperature of 10°C, an improved process performance was observed in the Archaea presence, but the differences were of no statistical significance.
Źródło:: Journal of Ecological Engineering; 2020, 21, 5; 97-106
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The Role of Subaquatic Springs in the Formation of Flow, Temperature and Chemical Composition of River Water in the Reserve
Autorzy:: Vaganov, Sergey
Blinov, Sergey
Belkin, Pavel
Perevoshchikov, Roman
Powiązania:: https://bibliotekanauki.pl/articles/2068457.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: karst
groundwater
surface water
subaquatic spring
chemical composition
river flow formation
temperature regime
nature reserve
Opis:: A study of the effect of subaquatic discharge of karst groundwater sources on the composition of the Vishera River, the largest tributary of the Kama River, was carried out. The study was carried out on the territory of the State Nature Reserve "Vishersky" and included the determination of the flow rate, temperature as well as chemical composition of natural waters. Six zones of karst groundwater discharge and their influence on the water regime of the Vishera river were studied in detail. It was shown that subaquatic sources in the places of their discharge, forming up to 36% of the river flow, significantly affect the temperature regime. A significant part of dissolved substances, primarily calcium ions and hydrocarbonate ions, as well as some trace elements (Li, Sr, V, Cr) enter the Vishery river with karst waters. The results of the study show that monitoring the composition and properties of groundwater discharged covertly in the river channel is an important part of the monitoring of water bodies of both protected and developed areas.
Źródło:: Journal of Ecological Engineering; 2022, 23, 3; 39--48
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Experimental Study of Temperature Influence on the Performance of PV/T Cell under Jordan Climate Conditions
Autorzy:: Al-Odat, Mohammed Qassim
Powiązania:: https://bibliotekanauki.pl/articles/2202185.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: PV module
electrical conversion
electrical efficiency
water cooling
cooling
cell temperature
Opis:: The electrical performance and the productivity of PV module depend on two main parameters, i.e. the radiation intensity and the cell operating temperature. The module electrical efficiency and productivity are significantly reduced as its temperature increases. Accordingly, cooling of PV modules is one of the most effective techniques to obtain higher efficiency and productivity as well as to reduce the degradation modes of PV modules due to high temperatures. This research work presents an experimental study carried out to investigate the effect of PV module cooling on the performance of PV module under Irbid city (Jordan) climate conditions. It was found that the electrical efficiency and the productivity of the PV modules were approximately enhanced by 14%. Therefore, water cooling of the PV modules is essential to enhance their performance.
Źródło:: Journal of Ecological Engineering; 2022, 23, 10; 80--88
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Research on the Influence of Temperature on the Activation of Selected Porous Mno2 Beds
Autorzy:: Skoczko, I.
Kisło, A.
Powiązania:: https://bibliotekanauki.pl/articles/124733.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water treatment
iron
manganese
groundwater
Opis:: Rising demands concerning water treatment and conservation make it necessary to search for more effective as well as cheap and ecologically safe solutions. During the filtration process quartz sand is replaced by filter materials which also have a strong effect on account of reactions taking place on a bed’s surface. Today’s technologies for groundwater and seepage water treatment in rapid filters make use of oxidation beds. They are able to effectively remove manganese (II) and iron (II) compounds based on heterogeneous oxidation catalysis. The main catalyst of the manganese removal process in terms of its catalytic oxidation in filtration beds is manganese dioxide. This compound is used as an oxidizing agent in many processes. The research conducted as part of this paper was aimed at creating a product with the qualities similar to a popular Greensand bed protected by patent. The authors tested washed quartz sand varying in granulation which was subject to activation in 10% KMnO4 solution. Grains of quartz sand after covering them with a permanent coat of manganese oxide developed the superficial oxidation layer. While performing the tests, a temperature of the process served as a variable. The beds produced as a result of the experiment enable the removal of iron and manganese from water without prior alkylation. Furthermore, they are an effective method of purifying water of organic pollutants and ammoniacal nitrogen. They function as oxidizing and filtering masses.
Źródło:: Journal of Ecological Engineering; 2016, 17, 4; 228-231
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Zmiany temperatury ścieków ogólnospławnych na podstawie pomiarów on-line
Variability of combined wastewater temperaturę on the basis of on-line measurements
Autorzy:: Brzezińska, A.
Powiązania:: https://bibliotekanauki.pl/articles/399970.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pomiary temperatury on-line
ścieki ogólnospławne
ścieki deszczowe
biologiczne oczyszczanie ścieków
temperature measurement on-line
combined wastewater
storm water
biological wastewater treatment
Opis:: Temperatura ścieków jest jednym z podstawowych czynników wpływających na poprawność procesu biologicznego oczyszczania, a w związku z tym na jakość ścieków oczyszczonych. W trakcie pogody suchej w ciągu doby temperatura ścieków zmienia się średnio w zakresie 2-3 stopni. Inaczej sytuacja przedstawia się w przypadku wystąpienia opadów. Wtedy zauważa się spadek temperatury dopływających ścieków nawet o kilka stopni, co np. w zimie i w czasie roztopów stanowić może jedną z przyczyn znacznego zakłócenia procesu biologicznego oczyszczania. Na uwagę zasługuje również fakt sezonowości związanej z parami roku, czyli okresu letniego i zimowego, kiedy to temperatura dopływających ścieków, nawet w trakcie pogody suchej, różni się między sezonami o kilka stopni. W niniejszym artykule przedstawiono wyniki badań temperatury ścieków ogólnospławnych dopływających do łódzkiej oczyszczalni ścieków uzyskane za pomocą sondy on-line, ze szczególnym uwzględnieniem okresów pogody mokrej. Podjęto próbę wykazania wpływu spadku temperatury na proces biologicznego oczyszczania ścieków przy wykorzystaniu programu komputerowego SymOs. Artykuł miał na celu zwrócenie uwagi na niebezpieczeństwa jakie niesie ze sobą zmiana temperatury dopływających ścieków, często nie uwzględniana przez obsługę oczyszczalni oraz projektantów, jako nie zbyt istotna dla procesu oczyszczania w porównaniu z gwałtowną zmianą ich ilości i jakości podczas zmiennych warunków atmosferycznych.
The temperature of wastewater is one of the basic factors influencing the efficiency of biological treatment process, and hence the quality of effluent. During a dry weather day wastewater temperature varies for 2-3 centigrades. In the case of rainfall the situation looks differently. At that time, a decrease of inflowing wastewater temperature for several centigrades is observed, what, for example, in winter and during snowmelt could be one of the causes of significant disturbance of biological treatment process. Seasonal variability of temperature merits the attention, too, especially concerning the periods of summer and winter, when the temperature of inflowing wastewater may differ even during dry weather for a few degrees. This paper presents the results of measurements of combined wastewater temperature at the inflow to the Lodz Wastewater Treatment Plant obtained with the use of an on-line sensor, with a particular emphasis on of wet weather periods. An attempt to demonstrate the impact of the decrease of temperature on biological wastewater treatment process using a computer program SymOs has been undertaken. The main purpose of this article was to pay attention to a danger constituted by the variability of wastewater temperature, which is often not taken into account by designers and wastewater treatment plant service, as not too important for the treatment process in comparison to an abrupt change in the quantity and quality of inflow in the changeable weather conditions.
Źródło:: Inżynieria Ekologiczna; 2011, 26; 290-302
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Nutrient Absorption and Biomass Production by the Marine Diatom Chaetoceros Muelleri: Effects of Temperature, Salinity, Photoperiod, and Light Intensity
Autorzy:: Minggat, Elizerberth
Roseli, Wardina
Tanaka, Yasuaki
Powiązania:: https://bibliotekanauki.pl/articles/1839548.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: microalgae
bioremediation
wastewater
eutrophication
estuary
brackish water
aquaculture
Opis:: The marine diatom Chaetoceros muelleri is commonly used for aquacultural feed and is well known for its fast growth and easy maintenance. In order to evaluate the potential of C. muelleri to be used for the nutrient removal and biomass production from eutrophic saline wastewaters, the algae were cultured under a wide range of temperature, salinity, photoperiod, and light intensity. The optimum temperature for the biomass production was observed at 30°C, but the algae could maintain at least 66% of the highest production between 20°C and 35°C. The optimum salinity for the biomass production was 25, but the algae could maintain at least 22% of the highest production between 10 and 30. Both light intensity and photoperiod affected the algal biomass production, and the minimum light requirement was considered 100 μmol m−2•s−1 for 6 hours to maintain the biomass production and nitrogen (N) and phosphorus (P) absorption. Throughout all the experiments, the N and P absorption increased with the biomass production, but the ratio of N and P to the biomass exponentially decreased with the biomass production. These results showed that C. muelleri is tolerant to the wide range of environmental conditions, absorbing nutrients and producing organic matter. C. muelleri has a great potential to be introduced in the water treatment processes, especially where the temperature and salinity fluctuate.
Źródło:: Journal of Ecological Engineering; 2021, 22, 1; 231-240
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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