Wszystkie pola: saline water - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Variability in the saline water exchange between the Baltic and the Gulf of Gdańsk by the σ-coordinate model
Autorzy:: Jankowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/48078.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: coastal zone
variability
thermohaline variability
water exchange
saline water
Baltic Sea
mass exchange
Gdansk Gulf
Opis:: A three-dimensional baroclinic σ–coordinate model was applied to study the circulation and thermohaline variability in the coastal zone in the south-eastern Baltic Sea. The model is based on the Princeton Ocean Model code of Blumberg & Mellor (1987), known as POM, and has the horizontal resolution of ∼5 km and 24 σ-levels in the vertical. The hydrodynamic conditions and variability of water and salt exchange between the Gulf of Gdańsk and the Baltic Proper, and the renewal of water masses in the Gulf of Gdańsk due to atmospheric forcing are analyzed. The numerical simulations were performed with real atmospheric forcings as well as with homogeneous (spatially uniform) wind fields over the whole Baltic Sea. The numerical simulations showed that the atmospheric forcing (winds) can play a significant role in shaping the renewal of bottom saline waters in the Gulf of Gdańsk. Two regions of inflow/outflow of saline waters responsible for the salinity regime were located. The overall water exchange between the Gulf and the Baltic Proper as well as the exchange of saline bottom waters appear to be strongly dependent on wind conditions. The net flux of water of salinity >9 PSU is of the order of 48 000–100000 m3 s−1. SE, E, S and NE winds were found to exert the greatest influence on salinity conditions in the Gulf of Gdańsk. Estimates of saline (salinity >9 PSU) water residence time based on the model simulation yielded values from 46 days for SE winds to 153 days for NW winds.
Źródło:: Oceanologia; 2003, 45, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of saline water on the synergistic interaction between diesel and Triton X-100 in the flotation of oxidized coal
Autorzy:: Chang, Ziyong
Diallo, Lancine
Feng, Bo
Powiązania:: https://bibliotekanauki.pl/articles/1448948.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: saline water
surfactants
adsorption
flotation
coal oxidation
Opis:: In this study, the effect of medium saline water on the synergistic interaction between diesel and Triton X-100 in the flotation of oxidized coal was investigated. The results showed that the flotation yield of oxidized coal in saline water was higher than that in de-ionized (DI) water due to the promotion of diesel adsorption, which was attributed to the screening of electrostatic repulsion between diesel droplets and coal particles in saline water. Meanwhile, the flotation of oxidized coal could be significantly improved when Triton X-100 was added with diesel as a composite collector, and less Triton X-100 was required in saline water than that in DI water to achieve the same true flotation yield, indicating that saline water could increase the effectiveness of Triton X-100 in improving oxidized coal flotation. A mechanism study revealed that Triton X-100 was able to promote diesel adsorption on oxidized coal through emulsification, thus increasing the surface hydrophobicity of oxidized coal through hydrogen bonding between the headgroups of Triton X-100 and the oxygenated groups on coal surfaces. The non-ionic characteristic of Triton X-100 ensured its capability of enhancing oxidized coal flotation in both DI water and saline water.
Źródło:: Physicochemical Problems of Mineral Processing; 2021, 57, 1; 216-225
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wheat yield response and seasonal salt profile evolution under irrigation with saline waters in a semi-arid region
Autorzy:: Cheraghi, Seyed A. M.
Powiązania:: https://bibliotekanauki.pl/articles/293346.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: saline water
soil salinity
wheat yield
rainfall
leaching fraction
Opis:: Scarcity of fresh water resources is the major constraint for agricultural development in Iran as in many other regions with arid and semi-arid climate. With the pressure on fresh water resources, the use of un-conventional water resources including brackish, saline and sewage water has received greater attentions in recent years. The objective of this study was to assess the impact of farmers' practices using saline groundwater on wheat yield and soil salinity in a Mediterranean climate of Fars province in southern Iran. The study was carried out in several commercial wheat production regions for two years. Chemical analysis of irrigation waters, volume of applied irrigation water, electrical conductivity of soil saturation extract (ECe) and yield were measured in each field. General information on agronomic practices was also collected using a questionnaire. Results demonstrate that waters with salinities higher than what has been classified as “suitable for irrigation” are being used for the production of wheat crop. Analysis of wheat yield response to saline irrigation water showed that for water salinities up to 10.7 mS∙cm^–1 (threshold value) variation in yield was relatively minor, above which wheat yield decreased at a greater rate. Root zone salinity profiles showed the effect of winter rainfall in reducing soil salinity. It is concluded that although acceptable yields are obtained with some of the highly brackish waters, over application of these waters would threaten the sustainability of crop production in the region.
Źródło:: Journal of Water and Land Development; 2020, 44; 26-32
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Evaluation of Mechanical Properties of Lightweight Concrete with Pumice Aggregate
Autorzy:: Shafiq, Malik Salman
Khan, Fasih Ahmed
Badrashi, Yasir Irfan
Khan, Fayaz Ahmed
Fahim, Muhammad
Abbas, Asim
Adil, Waqas
Powiązania:: https://bibliotekanauki.pl/articles/2024034.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: lightweight concrete
pumice lightweight aggregate
saline water curing
Opis:: This paper presents the findings of a study carried out for evaluation of the mechanical behavior of lightweight concrete. Pumice, a rock resulting from cooling of lava, having entrapped air bubbles, has been used as a light- weight coarse aggregate. Evaluation of the mechanical behavior of the Pumice Lightweight Aggregate Concrete (PLWAC) has been carried out in comparison with the conventional concrete while comparing the mechanical properties of the two. Complete replacement of the coarse aggregate by volume had been carried out in the PLWAC. The testing regime consisted of conducting laboratory tests on concrete samples for evaluation of the mechanical properties including compressive strength, tensile stength, workability and dry density. It was concluded from the results that the use of lightweight aggregate resulted in a reduction in workability, as indicated by the slump test. Moreover, the dry density of PLWAC was also reduced by 30% as compared to the conventional concrete. A significant decrease (49%) in the compressive strength of PLWAC as compared to conventional concrete while a minor difference was observed in the tensile strenght of the two (2.9%). Based on the results of this study, it is recommended that PLWAC cannot be used in structures subjected to heavy loading conditions. However, PLWAC has a good potential to be used in low-cost structures with accompanying benefits of weight reduction.
Źródło:: Advances in Science and Technology. Research Journal; 2021, 15, 2; 30-38
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Composite Barrier to Control the Corrosion of Mild Steel in Oil Well
Autorzy:: Singh, Rajesh Kumar
Thakur, Manjay Kumar
Kumar, Parshun
Powiązania:: https://bibliotekanauki.pl/articles/1030680.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: HCl
Mild steel
Saline water
composite barrier
filler
thermal parameters
Opis:: Mild steel is a very important engineering metal. Petrochemical industries are used bulk amount for their various purposes like recovery of crude oil, refinery units and transportation. Crude oil is a very highly viscous liquid for the opening of the month well strong HCl acid and saline water is used. They produce hostile environment of mild steel. Gaseous substances like CO2 and SO2 gases are found into the well of petroleum. Large amount of saline water are used during recovery of crude oil in this water CO2 and SO2 are dissolved to produce H2CO3 and H2SO4. These acids create an acidic medium of mild steel. Saline waters have possessed Cl¯ ions. It produces ambient environment for mild steel. The solution of salty water contains dissolve oxygen which develop corrosive environment of mild steel. These major corrosive substances are available during recovery of crude oil and they form corrosion cell with base metal. Metal produces galvanic, pitting, stress, crevice, intergranular corrosion. Nanocaoting and filler methods are used to protect metal in such un-friendly environment. The corrosion rate of metal was calculated by weight loss experiment in absence and presence of nanocoating and filler materials. The synthesized organic compound octahydrodibenzo[a,d][8]annulene-5,12-dihydrazone is applied for nanocoating and MgS as filler. The coating and filling works were completed by chemical vapour deposition and nozzle spray method. Potentiostat used for determination corrosion potential and corrosion current density. The surface adsorption was studied by thermal parameters like activation energy, heat of adsorption, free energy, enthalpy and entropy. The thermal parameters results were shown that coating and filler compounds were adhered with base metal by chemical bonding. The thermal results were calculated by Arrhenius equation and Langmuir isotherm. The coating and the filler substance formed composite barrier with metal and developed a protective barrier for the corrosive substances.
Źródło:: World Scientific News; 2020, 139, 2; 155-172
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Assessment of Shoreline Changes and the Groundwater Quality along the Coast of Kuakata, Patuakhali, Bangladesh
Autorzy:: Goswami, Sukhen
Rahman, Shaikh Ashikur
Alam, Mir Md. Tasnim
Rahman, Mahfuzur
Rafiq, Md. Risalat
Jaman, Md. Hasnat
Roy, Dhiman Kumer
Powiązania:: https://bibliotekanauki.pl/articles/2173235.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: saline water intrusion
hydrogeochemical analysis
digital shoreline analysis system
salinity
Opis:: Shoreline changes and groundwater quality monitoring have become pressing issues for the coastal region of Bangladesh. This study investigated the shoreline changes from 2000 to 2020 and evaluated the groundwater quality, as well as SWI in the Kuakata coastal area. While analyzing satellite images, the temporal shoreline changes were assessed through the Digital Shoreline Analysis System (DSAS) in ArcGIS 10.4.1. Higher erosion rates (>2 m/year) were found in the southernmost part and the SE part of the studied area. Twenty-five groundwater samples were collected, and the physicochemical parameters were measured to assess the groundwater quality. The geographic information system (GIS) was used to assess the spatial variation of the EC, pH, and Cl⁻ contents through the inverse distance weighted (IDW) interpolation method. The EC, Cl⁻, and pH values of the studied groundwater ranged from (1.2 mS/cm to 19.5 mS/cm), (79.88 mg/L to 11241.67 mg/L), and (7.9 to 8.7), repectively. The analysis revealed that the majority of the groundwater samples were unsuitable for drinking purpose due to higher EC and Cl⁻ values. Saline water intrusion (SWI) was determined by using the alternative EC vs Cl⁻ method in the southern part of the Kuakata beach area, which was closest to the sea.
Źródło:: Journal of Ecological Engineering; 2022, 23, 7; 323--332
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Mało energochłonna utylizacja zasolonych wód kopalnianych w zintegrowanym systemie membranowo – wyparnym
Low energy utilization of mine saline water in the integrated membrane-evaporative system
Autorzy:: Turek, M.
Laskowska, E.
Mitko, K.
Jakóbik-Kolon, A.
Powiązania:: https://bibliotekanauki.pl/articles/199056.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniki Górniczej KOMAG
Tematy:: wody kopalniane
odsalanie
nanofiltracja
mine waters
desalination
nanofiltration
Opis:: Przedstawiono rozwiązanie, w którym woda zasolona poddawana jest wstępnemu uzdatnianiu metodą nanofiltracji (NF) a następnie zatężaniu metodą wyparną lub w zintegrowanym układzie elektrodializa – odwrócona osmoza i dalszemu odparowaniu z krystalizacją chlorku sodu. Na przykładzie solanki z KWK Budryk wykazano, że uzysk soli, dzięki samemu zastosowaniu nanofiltracji, można zwiększyć z obecnej wartości 72,01% do 87,35%, a po dalszym usprawnieniu, polegającym na oczyszczaniu chemicznym, do 91,11% a nawet 99,1%. Wstępne uzdatnianie solanki metodą nanofiltracji, prowadzone w sposób opracowany przez Autorów w warunkach dużego przesycenia siarczanem wapnia z częściową recyrkulacją retentatu i kontrolowaną krystalizacją gipsu, daje możliwość zastosowania mało energochłonnych rozwiązań zatężania solanki. Na przykładzie solanki Budryk wykazano, że zużycie energii w procesie jej utylizacji można zmniejszyć z obecnych 888,7 kWh/t soli do 433,7-451,2 kWh/t soli, w przypadku zatężania solanki mało energochłonną metodą wyparną lub do 396,8 kWh/t soli w przypadku zatężania solanki w zintegrowanym układzie: elektrodializa – odwrócona osmoza. Proponowane rozwiązanie ma zostać przebadane w instalacji pilotowej w ramach projektu NANOS, finansowanego w programie TANGO2.
The paper presents an integrated system, in which saline water is pre-treated with nanofiltration (NF), then concentrated with thermal method or with electrodialysis-reverse osmosis, followed by further evaporation with sodium chloride crystallization. Based on water from KWK Budryk coal mine, it was proved that salt recovery, thanks to nanofiltration alone, can be increased from current value of 72.01% to 87.35%, or up to 91.11% or 99.1% after further enhancement. Following Authors’ developed procedure of nanofiltration pretreatment – operation at high calcium sulphate supersaturation with partial retentate recirculation and gypsum precipitation, makes the low energy consumption brine concentration possible. Based on Budryk brine, it was proved that energy consumption can be decreased from the current value of 888.7 kWh/t of salt to 433.7-451.2 kWh/t if the low energy consumption thermal method is applied or down to 396.8 kWh/t if the integrated electrodialysis-reverse osmosis system is applied. The proposed solution is to be verified in a pilot plant during the NANOS project funded in the TANGO2 programme.
Źródło:: Maszyny Górnicze; 2018, 36, 1; 39-48
0209-3693
2450-9442
Pojawia się w:: Maszyny Górnicze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Changing of Soil Properties under Drought and Saline Water Intrusion Conditions in Different Land-Use Patterns – A Case Study in the Ben Tre Province, Vietnam
Autorzy:: Loi, Le Tan
Minh, Vo Quang
Duy, Nguyen Ngoc
Powiązania:: https://bibliotekanauki.pl/articles/2173336.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: climate change
coastal
impact
vulnerable
Opis:: The study aimed to assess the change of soil properties of land use patterns affecting drought and saline intrusion in the Ben Tre province during 2019–2020. Soil samples were taken, and the data on land use patterns of Rice, bare soil, Shrimp, and Coconut in three horizons were at 0–20 cm, 20–60 cm, and 60–100 cm. The analysis of soil pH, EC, organic matter, and bulk density was conducted to assess the changes in soil properties. The results showed that soil pH, EC, and salinity had to be slightly increased in 2020, but soil organic matter and bulk density were not changed. Therefore, the Ben Tre province’s drought and saline intrusion conditions had a negligible impact in general evaluation. However, it is necessary to perform more other studies to clarify the effects of drought and salinity.
Źródło:: Journal of Ecological Engineering; 2022, 23, 8; 112--118
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Large halocline variations in the Northern Baltic Proper and associated meso- and basin-scale processes
Autorzy:: Elken, J.
Malkki, P.
Alenius, P.
Stipa, T.
Powiązania:: https://bibliotekanauki.pl/articles/47628.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Sopot
current
splitting area
Finland Gulf
saline water
conference
Baltic Sea
halocline
Opis:: The Northern Baltic Proper is a splitting area of the Baltic Sea saline water route towards the two terminal basins – the Gulf of Finland and the Western Gotland Basin. Large halocline variations (vertical isopycnal displacements of more than 20 m, intra-halocline current speeds above 20 cm s−1) appear during and following SW wind events, which rapidly increase the water storage in the Gulf of Finland and reverse the standard estuarine transport, causing an outflow in the lower layers. In the channel of variable topography, basin-scale barotropic flow pulses are converted into baroclinic mesoscale motions such as jet currents, sub-surface eddies and lowfrequency waves. The associated dynamics is analysed by the results from a special mesoscale experiment, routine observations and numerical modelling.
Źródło:: Oceanologia; 2006, 48, S
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Potential Use of Saline Wastewater for the Agglomeration of Fluidized Fly Ash
Możliwość wykorzystania zasolonych wód odpadowych do aglomeracji popiołów lotnych
Autorzy:: Pertile, E.
Surovka, D.
Balcari, L.
Powiązania:: https://bibliotekanauki.pl/articles/317792.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: wody zasolone
popioły lotne
dodatki do aglomeracji
saline water
CFBC fly ash
additivated granulate
Opis:: Experiments carried out within the research aimed to determine the influence of saline water on the properties of additivated granulate through interpreting extraction tests. Two types of mixing water of different degrees of mineralization were tested. Raw untreated water was used as a control sample. In assessing the potential use of saline water in the agglomeration of fluidized fly ash, aqueous extracts of fluidized-bed granulate mixed with water were subjected to analyses in accordance with valid legislation and standards. Based on the findings we identified their suitability for subsequent use. The main aim of the experiment was to compare the extraction test results of crushed and uncrushed granulate, which more or less fulfilled prerequisites of the intended testing. According to the obtained results it can be clearly seen that the mixing of salty water is recommended for use in the manufacture adducted granulate regardless of whether it is adducted granulate crushed or uncrushed, moistened raw untreated or salty water.
Eksperymenty przeprowadzone w ramach badań miały na celu określenie wpływu zasolenia wody na właściwości granulatu poprzez interpretację testów ekstrakcji. Zbadano dwa typy wody dodawanej do aglomeracji o różnym stopniu mineralizacji. Jako próbkę kontrolną użyto surową nieoczyszczoną wodę. Przy ocenie potencjalnego wykorzystania wody słonej w procesie aglomeracji lotnego popiołu fluidalnego, wodne ekstrakty z granulatu z popiołu fluidalnego zmieszanego z wodą zostały poddane analizom zgodnie z obowiązującymi przepisami i normami. Na podstawie ustaleń określono przydatność aglomeratów do późniejszego użycia. Głównym celem eksperymentu było porównanie wyników próby ekstrakcyjnej rozdrobnionego i nierozdrobnionego granulatu, które w mniejszym lub większym stopniu spełniły warunki zamierzonego badania. Zgodnie z uzyskanymi wynikami można wyraźnie zauważyć, że dodatek słonej wody jest zalecany do stosowania w wytwarzanym granulacie, niezależnie od tego, czy jest to granulat rozdrobniony czy nierozdrobniony, zwilżony, surową, nie poddaną obróbce lub słoną wodę.
Źródło:: Inżynieria Mineralna; 2018, R. 20, nr 2, 2; 273-280
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

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