Temat: Groundwater - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Interpretation of Groundwater Quality Using Statistical Techniques in Federal University, Otuoke and Environs, Bayelsa State, Nigeria
Autorzy:: Abadom, C. D.
Nwankwoala, H. O.
Powiązania:: https://bibliotekanauki.pl/articles/1178059.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Groundwater quality
hydrochemistry
potable water
water quality index
Opis:: This study aims at assessing and interpreting groundwater quality using statistical techniques in Otuoke and environs, Bayelsa State, Nigeria. Fourteen (14) groundwater samples were collected in the rainy season and analyzed for their physico-chemical and heavy metal contents. Heavy metals were analyzed using Atomic Adsorption Spectrometer. Assessment for drinking purposes revealed that the water is predominantly acidic, with iron and manganese contents exceeding regulatory guidelines in most locations. All other parameters were within WHO and NSDWQ regulatory limits for safe potable water. Water Quality Index revealed that over 73% of the groundwater in the area (11 samples) had good to excellent quality; while the remaining 27% of the groundwater (3 samples) have poor to unsuitable quality for consumption. Assessment of water quality for irrigation purposes was achieved using Sodium Adsorption Ratio (SAR), Potential Salinity (PS), Permeability Index (PI), Sodium percentage (Na%), Kelly’s ratio (KR), and Magnesium Adsorption Ratio (MAR). On average SAR (4.19), PI (68.51%), MAR (37.45%) and PS (0.77) revealed excellent water quality, whereas Na% (66.46%) revealed doubtful water quality while KR (2.00) revealed unsuitable water quality. Using Piper and Stiff diagrams, hydrochemical facies defined from groundwater in the area includes; Na+K – Cl facies; Na+K - Mg – Cl facies; and Na+K - Ca – Cl facies. Gibb’s diagrams revealed that the dominant control on the hydrochemical facies and overall groundwater quality in the area has been attributed to precipitation and chemical weathering of subsurface rocks. Various ionic ratios including Mg/Ca (0.642), HCO3ˉ/Cl (0.040), (Na+K)/Cl (7.026) and Cation Exchange Values (-6.026) revealed low salt inland origin with respect to provenance. Pearson correlation matrices showed both positive and negative inter-relationships between the physico-chemical and heavy metals in groundwater within the study area. This study has proven the effective use of water quality index as a tool for defining the overall quality of water in Otuoke and its environs, along with hotspots that needs immediate attention. The results could also serve as a decision making tool that will aid in establishment of treatment facilities to improve the quality of water in the study area.
Źródło:: World Scientific News; 2018, 95; 124-148
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Multivariate and Geostatistical Analyses of Groundwater Quality for Acid Rock Drainage at Waste Rock and Tailings Storage Site
Autorzy:: Adadzi, Patrick
Allwright, Amy
Fourie, Francois
Powiązania:: https://bibliotekanauki.pl/articles/2202307.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: acid rock drainage
groundwater
correlation matrix
principal component analysis
geostatistical analysis
Opis:: A multi-disciplinary approach is indispensable for adequate acid rock drainage (ARD), mineral leaching impact, and groundwater management. Groundwater is a valuable resource, and it is critical to protect as well as mitigate the effects of pollution such as ARD in the mining environment. Mine waste storage facilities (waste rocks and tailings) are potential ARD sources capable of degrading groundwater reserves. This research investigated and reported the application of a case study of multivariate statistical and spatial variability of selected parameters associated with ARD in groundwater around WRD and TSF at mine sites. Water quality analysis data of seventy water samples from 10 boreholes located at the WRD and TSF mine were utilised in this study. The correlation matrix and principal components analysis was applied to the data set to determine the associated variability in groundwater in relation to ARD. Geostatistical analysis was used to produce contour maps to ARD principal components of the study site, using ordinary kriging of the best fit models. The application of multivariate statistical and geospatial analysis in groundwater quality assessment with coupled soil and groundwater modelling of flow and transport at waste rock dump and tailings storage sites provides an essential tool for exploratory data analysis, and spatial extent determination of the relationship between various data sets significant to acid rock drainage.
Źródło:: Journal of Ecological Engineering; 2022, 23, 12; 203--216
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Geophysical Survey of Basement Complex Terrain Using Electrical Resistivity Method for Groundwater Potential
Autorzy:: Adeeko, Tajudeen O.
Samson, Damilola O.
Umar, Medina
Powiązania:: https://bibliotekanauki.pl/articles/1077235.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Basement
Electrical resistivity
Geological materials
Groundwater
Schlumberger
Opis:: A geophysical survey of basement complex using electrical resistivity method was carried out so as to provide geological and geophysical information on the different subsurface features. The sought-for parameters include thickness, depth, basement for groundwater potential and aquifer protective capacity. The acquired data were process using Win-Resist software and surfer 8, and the result was then analyzed and interpreted. Accordingly, 3-4 geoelectrical layers within the subsurface delineate the area: top soil, lateritic layer, weathered/fractured layer and fresh rock. Resistivity values of the top soil range between 55.5 mΩ to 749.7 mΩ, with average thickness of 0.4 m to 3.6 m, while the lateritic layer ranges between 153.3 mΩ to 862.0 mΩ, with average thickness of 4.5 m to 20.7 m, the weathered/fractured layer in turn ranges between 15.6 mΩ to 698.9 mΩ, with average thickness of 7.7 m to 55.2 m, and the fresh rock ranges between 13.4 mΩ to 5102 mΩ, with infinite homogeneous half space. Over all, the longitudinal conductance of the overburden units range from 0.147 mhos to 0.957 mhos and the overburden is thick enough for groundwater exploration activities. The results provide reasonably information that the aquifer units are weathered/fractured layers with a significant groundwater potential that is free of contamination.
Źródło:: World News of Natural Sciences; 2019, 23; 154-165
2543-5426
Pojawia się w:: World News of Natural Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Hydrogeochemical Characterization and Vulnerability Assessment of Shallow Groundwater in Basement Complex Area, Southwest Nigeria
Autorzy:: Adewumi, A. J.
Anifowose, A. Y. B.
Olabode, F. O.
Laniyan, T. A.
Powiązania:: https://bibliotekanauki.pl/articles/100830.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Śląski. Wydział Nauk o Ziemi
Tematy:: DRASTIC
groundwater
hydrogeochemical
Owo
vulnerability
WQI
wody podziemne
zanieczyszczenie
podatność
hydrogeochemia
Opis:: Thirty-five (35) groundwater samples from Owo area were analyzed for physicochemical parameters. Results show that the mean value of pH is 6.32, TDS is 208.92 mg/l, temperature is 28.77oC, EC is 545.16 μs/cm; TH is 111.09 mg/l, SO4 is 71.73 mg/l, Cl is 0.07 mg/l, HCO3 is 14.09 mg/l, Na is 25.06 mg/l, Ca is 37.07 mg/l, K is 24.36 mg/l and Mg is 4.41 mg/l. The results were compared to the WHO and NDSQW standards. All parameters were within the permissible limit except EC in well OW6 and K is above the stipulated standards in 69% of the total samples. The high concentration of K is linked to the use of NPK fertilizer in the area for agricultural purposes. The groundwater belongs to Ca-Na-K-SO4 and Na-Ca-SO4 water type respectively. The ionic concentration in the groundwater is due to the dissolution of the rock that makes up the aquifer. Plagioclase and silicate-bearing rocks are the sources of major ions in the water. SAR, PI, RSBC and KR reveals that groundwater in the area is good for irrigation purpose. DRASTIC model further revealed that groundwater in the area is less vulnerable to contamination under the current environmental conditions.
Źródło:: Contemporary Trends in Geoscience; 2018, 7, 1; 72-103
2299-8179
Pojawia się w:: Contemporary Trends in Geoscience
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The study of changes in Ardabil plain groundwater level using GIS
Autorzy:: Aghbolagh, J. Z.
Fataei, E.
Powiązania:: https://bibliotekanauki.pl/articles/102615.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: Ardebil plain
groundwater
GIS
interpolated
Opis:: Uncontrolled exploitation of groundwater in many parts of the world has led to a sharp drop in groundwater levels. In this study, changes in Ardabil plain groundwater level were studied using geographic information system (GIS). For this purpose, the interpolation table method was used, the intrinsic data as table data of piezo metric wells was used. In order to implement the model, the Majol Geoestatical in geographic information system software was used. The data entered as regions into the geographic information system, and then done for the entire zoning area, due to zoning 8 models, the IDW, GPI, RBF, LPI, KO, KS, KU and EBK in geostatical extension were evaluated. The ordinary kriging method (KO) with the lowest RMSE, was determined as the most accurate one, and finally, as the ultimate method for zoning and map providing for the changes in groundwater levels drop of the region. The results of classification showed that the biggest drop of about 40 meters was in the areas close to the southeastern parts of the study region and in other areas, little changes were observed, this rate of the change and decline in some parts of the desert like southern regions is very tangible and specified.
Źródło:: Advances in Science and Technology. Research Journal; 2016, 10, 29; 109-115
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Rainwater harvesting scenarios and its prospective in Pakistan
Autorzy:: Ahmed, Talat Farid
Shah, Shamim Ul Sibtain
Khan, Muhammad Attiqullah
Afzal, Muhammad Azeem
Sheikh, Ashfaq Ahmed
Powiązania:: https://bibliotekanauki.pl/articles/108433.pdf
Data publikacji:: 2020
Wydawca:: Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Tematy:: rainwater harvesting
groundwater recharge
water supply
Opis:: Water is a precious commodity and water scarcity has become a serious issue in many parts of the world, especially in dense urban areas. Water resources are under increasing stress due to continuous population growth, agricultural development, urbanization, and industrialization. The gap between water demand and supply has also increased in recent years. This has resulted in increasing pressure on underground water resources as well as the depletion of groundwater aquifers at an alarming rate. Thus there is a growing need to explore viable methods and techniques to manage water availability, especially in urban areas. The objective of the current study was to determine the potential for rainwater harvesting (RWH) in the twin cities of Islamabad and Riwalpindi. We evaluated its suitability to supplement the water supply as well as contribute to groundwater recharge and flood control efforts. This could in turn help to overcome water demand, could potentially recharge depleting groundwater resources and could result in the development of a currently untapped additional water source for urban hubs.
Źródło:: Meteorology Hydrology and Water Management. Research and Operational Applications; 2020, 8, 1; 64-69
2299-3835
2353-5652
Pojawia się w:: Meteorology Hydrology and Water Management. Research and Operational Applications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Hydrogeochemical processes and evaluation of groundwater in Al-Salman area – Iraqi Southern Desert
Autorzy:: Al-Mutawqi, Kareem Ghafel
Ewaid, Salam Hussein
Abed, Salwan Ali
Al-Ansari, Nadhir
Salim, Mudhafar A.
Kadhim, Ameer J.
Powiązania:: https://bibliotekanauki.pl/articles/1841953.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Dammam formation
Durov diagram
facies
Gibbs diagram
groundwater
hydrogeochemical processes
Iraqi Southern Desert
major ions
Piper diagram
Opis:: A field survey has been conducted for the study area using the Global Positioning System (GPS) and geological and geomorphological maps of the area. The study area is one of the important areas in Iraq characterized by scarce water resources. The purpose of the study is to determine the hydro-chemical processes and their relationship to groundwater quality carried out in the southwestern desert region of Iraq, where the region lacks extensive studies of water resources. Twenty-eight groundwater samples were collected from wells distributed between the eastern borders of Saudi Arabia and the West Bank of the Euphrates River. For the purpose of hydrogeochemical analyses, the Fetter method was used to collect and examine samples. A large part of the recharge area is located in Saudi Arabia, where the groundwater bearing aquifer represented by the Dammam formation extends to Iraq and Saudi Arabian International borders. The analysis determined the order of cations (Na+ > Ca2+ > Mg2+ > K+) and anions (Cl– > SO42– > HCO3–). High values of the variation coefficient (CV) correspond to the concentration of potassium, sodium and chloride ions (CV: 68.7, 64.7 and 64 respectively). To identify the hydrochemical water facies, the Piper diagram was used. It was found that 53% of the water samples belong to the Na-Cl type and 40% are of the Ca-Mg-Cl type, while the rest of the samples are the Ca-Cl type. To identify geochemical processes, it was found that ion exchange processes via chloroalkaline indices 1 and 2 are prevalent between Ca2+, Mg2+ in the groundwater and Na+, K+ in water bearing rocks. To learn more about the processes that led to the concentration of certain ions, such as sodium, it was found that they tend to be of silicate minerals related to surface runoff of water in recharge areas and carbonic rocks. It was also found that rock / soil-groundwater interaction and evaporation processes were the formal processes in the saturated zone and evaporation in the unsaturated zone are prevalent processes of groundwater ion concentration.
Źródło:: Journal of Water and Land Development; 2021, 50; 220-228
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Groundwater quality assessment for drinking purposes using water quality index in Ali Al-Gharbi District, Iraq
Autorzy:: Al-Shammary, Sarteel Hamid Enad
Al-Mayyahi, Sattar Obaid Maiws
Powiązania:: https://bibliotekanauki.pl/articles/1841940.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: drinking water
groundwater
Iraq
water quality index
Opis:: The present study aimed to assess groundwater quality according to the water quality index (WQI) in Ali Al- Gharbi district of the Maysan Governorate in eastern Iraq. For this purpose, 10 physical parameters such as pH, total hardness (TH), magnesium (Mg2+), calcium (Ca2+), potassium (K+), sodium (Na+), sulphate (SO42–), chloride (Cl–), nitrate (NO3–), and total dissolved solids (TDSs) were examined since 2019 from 16 different locations (viz. wells). The analysis results indicated that 18.75% of the water samples were of good quality, 56.25% of them had low quality, and 25% of such samples were very poor. The WQI also varied from 69.67 and 297.6. Therefore, prior to water use, there is a dire need for some treatments, as protecting this district from pollution is significant.
Źródło:: Journal of Water and Land Development; 2021, 50; 274-280
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of Variable-Density and Constant-Density Representations of Flow on Simulating Terrestrial Groundwater Discharge into a Coastal Lagoon
Autorzy:: Al-Taliby, Wissam
Dekhn, Hadeel
Powiązania:: https://bibliotekanauki.pl/articles/2028164.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Indian River Lagoon
terrestrial groundwater discharge
variable density
constant density
Opis:: Terrestrial groundwater discharge (TGWD) can be an important pathway for pollutants into coastal water bodies. Thus, a reliable way to quantify it is essential for efficient coastal management practices. This study evaluated the feasibility of using constant-density models for estimating TGWD amounts into the Indian River Lagoon, which is a variable-density estuarine environment. Constant-density models were developed using MODFLOW, while variable-density models were developed using SEAWAT. The numerical models were calibrated to match the field measured head data under the lagoon. The amounts of TGWD into the IRL and hydraulic head distributions calculated by the two codes were compared over eight pairs of numerical experiments. Two of those numerical experiments used the calibrated model and field measured conditions, while the rest of them used modified versions of the calibrated models, including variable anisotropy ratio k, variable lagoon salinity $L_S$, and increased water table elevation by 5%. The results showed that the constant-density model is fairly accurate in estimating TGWD and head distributions at the calibrated k in the range of 1000–20,000 with an error not exceeding 9.4% under the actual measured field conditions. Even when $L_S$ was assumed to increase to ocean salinity value of 1.0, a case that rarely occurs in IRL, the calibrated constant-density model’s accuracy was not affected substantially. However, the constant-density model failed to represent the physics of the variable-density environment at k values lower than 1000, where the error exceeded 129%. Generally, the accuracy of the constant-density model was found to increase substantially at lower $L_S$ and higher water table elevations.
Źródło:: Journal of Ecological Engineering; 2021, 22, 11; 188-197
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Modeling of Groundwater Pollution by Former Seawater in Submarine Groundwater Discharge Driven by Saltwater Intrusion
Autorzy:: Al-Taliby, Wissam
Dekhn, Hadeel
Powiązania:: https://bibliotekanauki.pl/articles/2026744.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: saltwater intrusion
SEAWAT
submarine groundwater discharge
groundwater
Opis:: Coastal aquifers are usually vulnerable to contamination by saltwater intrusion. The degree of contamination depends on the amount of former seawater intruding the aquifer as submarine groundwater discharge (SGD). A three-dimensional numerical SEAWAT model was developed to provide insights to the responses of saltwater intrusion and amount of seawater portion of SGD, to groundwater withdrawal from four wells at different spatial locations. The results showed that saltwater wedge encroachment varies with a withdrawal rate and well location. Increasing withdrawal rates from 0.165 $m^3$/s to 0.53166 $m^3$/s resulted in a noticeable increase in wedge encroachment into the aquifer from 589 m to 1319 m, respectively, regardless of the distance from the coastline. However, higher withdrawals from the wells closer to the coastline caused the hydraulic head near the seaside to drop below the terrestrial head, causing the saltwater wedge to be pushed back toward the sea. Simulations also showed that a coastal well might act as a hydraulic barrier that prevents the brackish zone from moving further inland, which is critically important in terms of groundwater management. Seawater contributed from 5% to above 33% in SGD. Although the withdrawal rates from Well 3 were 10 to 20 times larger than the Well 2 rates, the seawater contribution associated with Well 3 was about the same. This is attributed to the horizontal vicinity of Well 2 to the seacoast boundary compared to Well 3 even though Well 3 is deeper than Well 2, demonstrating that it is the horizontal location that governs the amount of abstracted former seawater.
Źródło:: Journal of Ecological Engineering; 2022, 23, 2; 166-175
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Spatial distribution prediction for the ground water quality in Mosul City (Iraq) using variogram equations
Autorzy:: Al-Tamir, Mus'ab A.
Ibrahim, Abdullah
Powiązania:: https://bibliotekanauki.pl/articles/36063299.pdf
Data publikacji:: 2023
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: GIS
geospatial interpolation
groundwater quality
kriging
semivariogram model
Opis:: The GIS-aided spatial interpolation was applied on collected groundwater data to predict selected parameters (i.e., pH, electrical conductivity, and temperature) for the selected water wells distributed over Mosul City in Iraq. A descriptive statistical analysis was conducted on collected samples to explore the statistical indices. The skewness test was also employed to test the distribution of data sets around their mean values. The natural logarithms function achieved least skewness values and thus was applied to transfer data sets in order to adjust normality of the data sets distribution. Among all applied semivariogram models, the J-Bessel semivariogram model was optimal in terms of root mean square error (RMSE) values. The average standard errors were 0.2217, 740.5, and 1.209 for pH, EC, and temperature, respectively.
Źródło:: Scientific Review Engineering and Environmental Sciences; 2023, 32, 2; 186-197
1732-9353
Pojawia się w:: Scientific Review Engineering and Environmental Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Sorption and migration of Cs, Sr, and Eu in gypsum - groundwater system
Autorzy:: Alhassanieh, O.
Mrad, O.
Ajji, Z.
Powiązania:: https://bibliotekanauki.pl/articles/147892.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: distribution
cesium
europium
strontium
gypsum
groundwater
Opis:: The distribution of 137Cs, 152Eu, and 85Sr in a solid/aqueous system, gypsum in contact with groundwater, was investigated using gamma-spectrometry. The sorption and migration of the radionuclides were investigated. The aqueous phase was characterized using instrumental neutron activation analysis (INAA) and high performance liquid chromatography (HPLC). The solid phases were characterized using X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The investigations included three kinds of gypsum: mineral, commercial, and own prepared gypsum. The influence of some parameters on sorption/migration of the radionuclides were studied, such as contact time, pH, and concentrations of concurrent elements. The effect of element concentration was also investigated. The results show the ability of gypsum to keep Sr and Eu in the solid phase in all three cases. The incorporation of Cs in the solid phase depends on the conditions and used materials, and varies between 93 and 97%.
Źródło:: Nukleonika; 2012, 57, 1; 125-131
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Radiological characterization of the phosphate deposit in Al-Jalamid phosphate mining area, Saudi Arabia
Autorzy:: Alhawsawi, Abdulsalam M.
Shababa, E. I.
Qutub, Maher M. T.
Banoqitah, Essam M.
Kinsara, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/1841647.pdf
Data publikacji:: 2021
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: Al-Jalamid site
uranium
thorium
phosphate rocks
phosphate deposits
natural radioactivity
environmental radioactivity
pollution
groundwater
Opis:: It is a known fact that phosphate rocks have high levels of natural radioactivity due to the presence of large concentrations of radionuclides. This work aims to estimate radiation exposure and dose levels at Al-Jalamid site in northern Saudi Arabia. Al-Jalamid area is one of the largest reserves of phosphate worldwide. Ma’aden, a Saudi Government public company, owns the mine and is responsible for all mining activities. Phosphate and soil samples collected from Al-Jalamid phosphate mining area have been analysed for their uranium and thorium content by an α-spectrometer using radiochemical techniques. The quantity of radon gas was measured both in groundwater and in the atmosphere (indoor and outdoor) at the site using a portable radiation survey instrument. Groundwater samples collected from wells surrounding the mining area were analysed using a liquid scintillation counter in addition to an α-spectrometer. Finally, it is found that phosphate rock concentrate products cannot be utilized economically based on the standards set by the International Atomic Energy Agency (IAEA), since the average activity concentration does not reach the limit set by IAEA and hence are not commercially feasible.
Źródło:: Nukleonika; 2021, 66, 1; 35-44
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Projekt instalacji pilotowej przepuszczalnej bariery aktywnej do usuwania chlorowanych etenów z wód podziemnych
Design of a pilot-scale permeable reactive barrier installation to remove chlorinated ethens from groundwater
Autorzy:: Andrychowicz, A.
Grajales-Mesa, S. J.
Malina, G.
Powiązania:: https://bibliotekanauki.pl/articles/2075411.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: trójchloroetylen
oczyszczanie wód
przepuszczalna bariera aktywna
instalacja pilotowa
trichloroethylene
groundwater remediation
permeable reactive barrier
pilot-scale installation
Opis:: Permeable reactive barriers (PRBs) are considered as an effective remedial option for groundwater contaminated with chlorinated ethens. A pilot-scale PRB installation described in this article has been used to: 1) test the possibility of treating groundwater contaminated with trichloroethylene (TCE) in the vicinity of the water works in SE Poland, and 2) to verify under field conditions the usefulness of compost and brown coal mixtures as the effective PRB reactive material (cheep, easily available and environmentally friendly) previously studied through batch and column tests.
Źródło:: Przegląd Geologiczny; 2015, 63, 10/1; 609--611
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Adsorption capacity of chosen sandy ground with respect to contaminants relocating with groundwater
Zdolność adsorpcyjna wybranego piaszczystego gruntu względem zanieczyszczeń przemieszczających się z wodą gruntową
Autorzy:: Aniszewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/204710.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: advection
dispersion
non-linear Freundlich adsorption isotherm
adsorption parameters
groundwater
transport model
adsorpcja
zdolność adsorpcyjna
dyspersja
nieliniowa izoterma adsorpcji Freundlich
parametry adsorpcji
przepływ zanieczyszczeń
woda gruntowa
model transportu
Opis:: One of the most important problems concerning contaminant transport in the ground is the problem related to the definition of parameters characterizing the adsorption capacity of ground for the chosen contaminants relocating with groundwater. In this paper, for chloride and sulfate indicators relocating in sandy ground, the numerical values of retardation factors (R_a) (treated as average values) and pore groundwater velocities with adsorption (u_x/R_a) (in micro-pore ground spaces) are taken into consideration. Based on 2D transport equation the maximal dimensionless concentration values (C*_{max c}) in the chosen ground cross-sections were calculated. All the presented numerical calculations are related to the unpublished measurement series which was marked in this paper as: October 1982. For this measurement series the calculated concentration values are compared to the measured concentration ones (C*_{max m}) given recently to the author of this paper. In final part of this paper the parameters characterizing adsorption capacity (R_a, u_x/R_a) are also compared to the same parameters calculated for the two earlier measurement series. Such comparison also allowed for the estimation of a gradual in time depletion of adsorption capacity for the chosen sandy ground.
Jednym z najważniejszych problemów dotyczących przepływu zanieczyszczeń w wodzie gruntowej jest problem związany z określeniem parametrów charakteryzujących zdolność adsorpcyjną gruntu dla wybranych zanieczyszczeń przemieszczających się z wodą gruntową. W tym artykule, dla chlorowych i siarczanowych wskaźników przemieszczających się w piaszczystym gruncie, wzięto pod uwagę liczbowe wartości współczynników retardacji (R_a) (traktowanych jako wartości średnie) oraz porowych prędkości wody gruntowej z adsorpcją (u_x/R_a ) (w przestrzeniach makro-porowych gruntu). W oparciu o 2D równanie transportu obliczono maksymalne bezwymiarowe wartości stężeń (C*_{max c}) w wybranych przekrojach gruntowych. Wszystkie prezentowane obliczenia numeryczne odniesiono do niepublikowanej serii pomiarowej oznaczonej w pracy jako: Październik 1982. Dla tej serii pomiarowej obliczone numerycznie wartości stężeń porównano z pomierzonymi wartościami stężeń (C*_{max m}), które udostępniono ostatnio autorowi pracy. W końcowej części pracy parametry charakteryzujące zdolność adsorpcyjną (R_a, u_x/R_a) porównano również z takimi samymi parametrami obliczonymi dla dwóch wcześniejszych serii pomiarowych. Takie porównanie pozwoliło również oszacować stopniowe w czasie wyczerpywanie się zdolności adsorpcyjnej dla wybranego gruntu piaszczystego.
Źródło:: Archives of Environmental Protection; 2017, 43, 1; 27-33
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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