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    Wyświetlanie 1-13 z 13
    Tytuł:
    Removal of chromium and strontium from aqueous solutions by adsorption on laterite
    Autorzy:
    He, Yong
    Chen, Yong-Gui
    Zhang, Ke-Neng
    Ye, Wei-Min
    Wu, Dong-Yu
    Powiązania:
    https://bibliotekanauki.pl/articles/204768.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adsorption
    isotherms
    chromium
    strontium
    laterite
    Opis:
    To investigate the adsorptive properties of a local laterite deposited in Chenzhou, Hunan province, China, the adsorptive properties of the natural laterite were investigated by batch technique in this study. The effects of contact time, pH, ionic strength, temperature, and the concentration on adsorption properties were also analyzed. The obtained experimental results show that the main mineral composition of laterite is kaolinite and montmorillonite. The adsorption process achieved equilibrium within 60 minutes and 90 minutes for Sr(II) and Cr(VI), respectively. The adsorption capacities for Cr(VI) and Sr(II) by the laterite were about 7.25 mg·g-1 and 8.35 mg·g-1 under the given experimental conditions, respectively. The equilibrium adsorption data were fitted to the second-order kinetic equation. The adsorption capacity for Sr(II) onto the laterite increased with increasing pH from 3–11 but decreased with increasing ionic strength from 0.001 to 1.0 M NaCl. The Sr(II) adsorption reaction on laterite was endothermic and the process of adsorption was favored at high temperature. Similarly, the adsorption capacity for Cr(VI) onto the laterite increased with increasing pH from 3–11, however, the ionic strength and temperature had an insignificant effect on Cr(VI) adsorption. The adsorption of Cr(VI) and Sr(II) was dominated by ion exchange and surface complexation in this work. Furthermore, the Langmuir and Freundlich adsorption isotherm model was used for the description of the adsorption process. The results suggest that the studied laterite samples can be effectively used for the treatment of contaminated wastewaters.
    Źródło:
    Archives of Environmental Protection; 2019, 45, 3; 11-20
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Leaching behaviour of a turkish lateritic ore in the presence of additives
    Autorzy:
    Basturkcu, H.
    Acarkan, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/110446.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    laterite
    nickel
    agitation leaching
    dissolution
    Opis:
    This paper investigates the dissolution mechanism of a lateritic nickel ore from the Caldag Region of Manisa in Turkey. The ore sample contained 1.2% Ni, 24.8% Fe, and 0.062% Co. The optimum leaching conditions were found to be temperature 80 oC, particle size -74 μm, H2SO4 concentration 200 g/dm3, solids ratio (by weight) 10% and leaching duration 8 h. The extractions of 98.2% Ni, 98.6% Fe and Co 98.9% were obtained under these conditions. Additionally, the effects of additional substances such as NaCl, Na2S2O5, Na2SO4, and KCl were investigated in order to decrease the leaching duration. The results showed that the additives accelerated the leaching kinetics and achieved nearly the same nickel and cobalt extractions at the end of 4 h compared to the results obtained after 8 h without the additives. If the additives containing chlorine were used, it was determined that the iron extraction showed no increase, although both the nickel and cobalt extractions increased.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 1; 112-123
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Separation of nickel and iron from lateritic ore using a digestion – roasting – leaching – precipitation process
    Autorzy:
    Basturkcu, H.
    Acarkan, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/109861.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    laterite
    digestion
    roasting
    salt addition
    leaching
    precipitation
    Opis:
    This paper investigates extraction of nickel and iron from a lateritic nickel ore from the Caldag region of Manisa in Turkey. The ore sample contains 1.2% Ni, 24.77% Fe and 0.062% Co. The process applied includes digestion with 40 wt-% sulfuric acid at 200 C for 60 min, roasting at 700 C for 15 min, leaching with water for 30 min at 1:5 solid/liquid ratio (by weight) and precipitation of the remaining iron at pH 3 and 60 C. In order to improve nickel and cobalt extractions using the digestion-roasting- leaching-precipitation process (DRLP), Na2SO4 addition in the roasting stage was examined. Under the optimum conditions and in the presence of Na2SO4, 86.2% Ni and 94.2% Co extractions were obtained with almost zero iron content. As a result, 2.07 g dm-3 Ni, 0.12 g dm-3 Co and 0.05 g dm-3 Fe could be achieved in the pregnant leach solution within nearly 2.5 hours.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 2; 564-574
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Atmospheric pressure leaching of nickel from a low-grade nickel-bearing ore
    Autorzy:
    Javanshir, S.
    Mofrad, Z. H.
    Azargoon, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/110534.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    leaching
    kinetics
    calcination
    laterite ore
    nickel recovery
    Opis:
    This study focused on the extraction of nickel from a low-grade lateritic ore. The characterization of representative samples was done by X-ray diffraction (XRD), X-ray fluorescence (XRF), and microscopic mineralogical studies. Nickel was uniformly distributed in iron (hydr)oxide minerals. The pre-concentration of nickel was attempted by magnetic separation, but was unsuccessful. The effect of the type of lixiviant, acid concentration, S/L ratio, time, and temperature were investigated in the atmospheric leaching process. Based on the experimental data, optimum conditions for the maximum recovery of nickel were determined under the following conditions: 5 M H2SO4, 25% (w/v), 90 ºC, and two hours. Pre-calcination, for increasing nickel extraction by converting goethite to hematite, was carried out on raw ores at different times (30-180 minutes) and temperatures (180-540 ºC). Recovery was found increasing from 69 to 95% under the same conditions. Kinetic studies were conducted by fitting the data with Shrinking Core (SC) models. The study determined, from the estimate of activation energy, that the rate of reaction controlled by chemical reaction.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2018, 54, 3; 890-900
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects and mechanism of Bayer red mud on co-reduction with a saprolitic laterite ore to prepare ferronickel
    Autorzy:
    Wang, Xiaoping
    Sun, Tichang
    Wu, Shichao
    Hu, Tianyang
    Rong, Lingkun
    Powiązania:
    https://bibliotekanauki.pl/articles/1449072.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    red mud
    laterite ore
    co-reduction
    ferronickel powder
    Opis:
    Co-reduction of a saprolitic laterite and waste Bayer red mud was investigated to prepare ferronickel powder. The synchronous reduction and comprehensive recovery of nickel and iron in the low-grade laterite ores and iron in the red mud were realized. At the red mud dosage of 50 wt%, ferronickel powder with nickel and iron grades of 5.58 wt% and 89.91 wt% was obtained. The corresponding nickel and total iron recoveries were 93.11 wt% and 90.23 wt%, respectively. The red mud enhanced the nickel recovery of the saprolitic laterite ore evidently, attributing to the formation of low-melting anorthite, omphacite, and diopside during co-reduction. This led that NiO in the saprolitic ore was released. Meanwhile, obvious melting phenomenon of the roasting system was appeared, enhancing the growth of the ferronickel particles.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2020, 56, 4; 641-652
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of chemical and biogenic leaching on surface area and particle size of laterite ore
    Autorzy:
    Pawlowska, A.
    Sadowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/110297.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    nickel
    laterite ores
    leaching
    citric acid
    Aspergillus niger
    Opis:
    Currently there is a decline in the world’s nickel sulfide deposits, which are the main source of this metal. Due to the fact, that more than 70% of nickel reserves are in the form of oxide ores, more attention is nowadays paid on laterites. Leaching processes using different organic acids are widely described in the literature, but there is a lack of works linking influence of leaching process with the surface area and particle size distribution. Therefore, the main aim of this study was to examine how citric acid produced by microorganisms and citric acid added as chemical affected the specific surface and particle size distribution of mineral particles. The laterite ore was obtained from Szklary deposit, Poland. This study also compared the effect of chemical citric acid and filtrate after cultivation of Aspergillus niger on nickel extraction. It was observed that higher nickel recovery correspond to higher surface area of particles. The highest yield of nickel extraction was observed for a citric acid concentration of 1 mol/dm3 (67%). The specific surface area after leaching was 159 m2/g. An analysis of particle size distribution showed increase in the median particle size of particles after leaching with citric acid. It may suggest that dissolution of Polish laterites follows a shrinking core-shrinking particle model.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2017, 53, 2; 869-877
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on leaching kinetics of laterite ore using hydrochloric acid
    Autorzy:
    Li, Jinhui
    Xu, Zhifeng
    Wang, Ruixiang
    Gao, Yang
    Yang, Yang
    Powiązania:
    https://bibliotekanauki.pl/articles/110911.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    nickel laterite
    hydrochloride acid
    kinetics analysis
    hydrometallurgy
    leaching mechanism
    Opis:
    The process of atmosphere-pressure acid leaching of laterites has attracted considerable attention in the nickel industry in recent years. However, the leaching kinetics of laterite using hydrochloride acid has not yet been fully researched. In this paper, the mineral analysis of the ore was carried out, and the leaching mechanism of different minerals at different time was studied comprehensively. The kinetics analysis of the leaching process of nickel, cobalt and manganese showed that the kinetics model of diffusion controlling was suitable and could be described by the linear equation, 1-3(1-a)2/3+2(1-a)=k2t. Based on the linear equation and the Arrhenius equation, the values of activation energy of metal leaching can be deduced (11.56 kJ/mol for nickel, 11.26 kJ/mol for cobalt and 10.77 kJ/mol for manganese). Study of leaching mechanism shows that the order of these minerals dissolution is: goethite, lizardite, magnetite and hematite. Due to the original or product of silica, magnetite, hematite and talc, they can form the solid film which hinders the leaching of valuable metals. Thus, the diffusion controlling step is inner diffusion, namely solid film diffusion controlling.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2019, 55, 3; 711-720
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorption Studies of Nitrate by Geo-Physical Environment (Laterite soil) of the Study Area Bidar Urban & its Industrial Area, Karnataka State, India
    Autorzy:
    Shivasharanappa, ---
    Padaki, S.
    Kushtagi, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/971327.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Nitrate Adsorption
    laterite
    Batch Experiments
    Freundlich isotherm
    Langmuir isotherm
    Opis:
    In the present work, adsorption of Nitrate on Laterite soil has been studied using batch adsorption techniques. Main objectives of this study is to study the physical properties of Laterite soil, detection of Nitrate removal by adsorbent Laterite soil as a function of contact time, adsorbent dosage, pH, to study sorption kinetics, and to study isothermal pattern. The results of this study showed that the Optimum contact time, Optimum dosage and Optimum pH for adsorption of Nitrate on Laterite soil reached to equilibrium after 130 minutes, with removal efficiency of 68 %, 1400 mg as optimum dosage and at optimum pH of 6. The rate of adsorption of Nitrate obeys first order rate equation. The obtained results of the batch experiments are best fitted to Langmuir and Freundlich adsorption isotherms. From the experimental analysis it is concluded that Laterite soil shows good removal efficiency and hence can be used as adsorbent.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 6; 66-76
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recovery of nickel and iron from low–grade laterite ore and red mud using co–reduction roasting: Industrial-scale test
    Autorzy:
    Guo, Xiaoshuang
    Xu, Chengyan
    Wang, Yingshuo
    Li, Xiaohui
    Sun, Tichang
    Powiązania:
    https://bibliotekanauki.pl/articles/1447175.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    co-reduction
    low-grade laterite ore
    red mud
    rotary kiln
    powdered ferronicke
    Opis:
    In this study, the effects of red mud (RM) dosage during the co-reduction roasting of lowgrade laterite ore and RM were investigated. The expanded test was conducted under the following optimized conditions: RM-1 dosage of 15 wt%, anthracite dosage of 13 wt%, a roasting temperature of 1300oC, and roasting time of 3 h. Ferronickel powder was obtained with a nickel grade of 1.95 wt%, iron grade of 83.25 wt%, and nickel and total iron recoveries of 94.71 wt% and 95.98 wt%, respectively. The addition of RM improved the recovery of nickel and total iron in ferronickel powder. The reason was because of the increased intensity of the diffraction peaks of kamacite and iron, and the ferronickel particles grown due to the liquid phase were easier to achieve at a lower melting point. The industrialscale test results showed that ferronickel powder was obtained with average nickel and total iron grades of 1.76 wt% and 86.46 wt%, respectively, which indicated the successful industrial-scale test of co–reduction roasting. Thermodynamic analysis theoretically illustrated the feasibility of the co–reduction of low-grade laterite ore and RM. Increased roasting temperature promoted the reduction of iron oxide and nickel oxide.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2021, 57, 3; 61-72
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Field trip in the Kerala : report
    Autorzy:
    Rączkowska, Z.
    Prokop, P.
    Kijowska-Strugała, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/295022.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    cliff coast
    laterite
    Great Indian Escarpment
    Western Ghats
    Kerala
    wybrzeże klifowe
    lateryt
    Wielka Skarpa Indyjska,
    Ghaty Zachodnie
    Opis:
    This report contains short information about the geomorphological field trip in Kerala State. The field trip was largely focused on various geomorphological and geoecological aspects of laterites and backwaters which dominate in landscape of Kerala. One of the main highlights of the field trip was to the examination of type locality of laterite. Nearly 60% of the Kerala is covered by laterite or laterite-derived materials, and lateritisation process dominates the landform development from the coast to foothills. The second main highlights of the field trip was to the examination of backwaters which are a network of five big lakes (lagoons and estuaries) and rivers linked by natural and man-made canals.
    Źródło:
    Landform Analysis; 2017, 35; 9-12
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An investigation into structural strengths of laterized concrete
    Badanie wytrzymałości betonu z zastosowanym laterytem
    Autorzy:
    Tsado, T. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2068331.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    beton
    lateryt
    piasek
    wytrzymałość betonu
    wytrzymałość na ściskanie
    wytrzymałość na rozciąganie
    concrete
    laterite
    sand
    concrete strength
    compressive strength
    tensile strength
    Opis:
    This paper presents the results of an investigation into the characteristics of concrete containing laterite as a full or partial replacement of sand. Sand in a concrete mix proportion of 1:2:4:0.6 and 1:2:2:0.6 (cement: sand: coarse aggregate: water-cement ratio) was replaced with 0, 20, 40, 60, 80, and 100% laterite. The concrete strength was confined to characteristic concrete strength grade of 20 and 25 N/mm². Experimental results based on qualitative and quantitative data shows that, concrete produced at 28-day hydration period with up to 40%> replacement level of sand by laterite attained the designed concrete compressive strength of 20.48 N/mm² for concrete strength grade of 20 N/mm² but fell slightly below 25 N/mm² for concrete strength of grade 25 N/mm². This indicates the possibility of using laterite as a partial replacement for sand up to 40%>. It was also observed from the results obtained that the workability - of laterite concrete increased with increase in the replacement level of sand by laterite, while the cube compressive strength, split cylinder tensile strengths and the percentage water absorption of the concrete decreased with increase in the replacement level of sand. Regression models relating the split cylinder tensile strength and cube compressive strength of concrete strength grade of 20 and 25 N/mm² of partial sand replacement with laterite in the various percentage, yielded predictive models ƒt(C20) = 0.2093 (ƒcu)0.5259 and ƒt(C25) = 0.4961 (ƒcu)0.2945 with correlation coefficients R² = 0.8946 and R² = 0.947 respectively.
    W artykule przedstawiono wyniki badań w zakresie właściwości betonu zawierającego lateryt jako całkowity lub częściowy substytut piasku. Piasek z mieszanki betonowej o proporcji 1:2:4:0.6 i 1:2:2:0.6 (cement : piasek : kruszywo grube : stosunek cementowo-wodny) zastąpiono układem 0, 20, 40, 60, 80 i 100% laterytu. Wytrzymałość betonu została ograniczona do charakterystycznej wytrzymałości betonu - 20 i 25 N/mm². Eksperymentalne wyniki oparte na danych ilościowych i jakościowych pokazują, że beton po 28-dniowym okresie dojrzewania, w którym na poziomie do 40% zastąpiono piasek laterytem, osiągnął wytrzymałość na ściskanie 20,48 N/mm² dla zaprojektowanej klasy 20 N/mm², ale wartość wytrzymałości na ściskanie dla zaprojektowanej klasy 25 N/mm² spadła poniżej 25 N/mm². Wskazuje to na możliwość wykorzystania laterytu do częściowego zastąpienia piasku do 40%. Na podstawie otrzymanych wyników stwierdzono również, że urabialność betonu z wykorzystaniem laterytu wzrosła wraz ze wzrostem poziomu zastąpienia piasku przez lateryt, zaś wytrzymałość na ściskanie, wytrzymałość na rozciąganie i procent zużycia wody w betonie zmniejszyły się wraz ze wzrostem poziomu zastąpienia piasku. Modele regresji odnoszące się do wytrzymałości na rozciąganie i wytrzymałości na ściskanie betonu klasy 20 N/mm² i 25 N/mm², w którym piasek w różnych procentach częściowo zastąpiono laterytem, pozwoliły przyjąć modele analityczne: ƒt(C20) = 0.2093 (ƒcu)0.5259 oraz ƒt(C25) = 0.4961 (ƒcu)0.2945 ze współczynnikami R² = 0.8946 i R² = 0.947.
    Źródło:
    Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo; 2013, 19 (169); 192--203
    0860-7214
    Pojawia się w:
    Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości zastosowania metody tomografii elektrooporowej (ERT) do rozpoznania miąższości pokrywy laterytowej
    Applicability analysis of the electrical resistivity tomography (ERT) method for the diagnosis of laterite cover thickness
    Autorzy:
    Pacanowski, G.
    Czarniak, P.
    Piechota, A.
    Mieszkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075560.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tomografia elektrooporowa
    VES
    oporność właściwa
    lateryty
    złoża niklu
    złoża kobaltu
    electrical resistivity tomography
    electrical resistivity sounding
    laterite
    nickel and cobalt deposit
    Opis:
    The paper discusses the problem of determining the thickness of a laterite cover using electrical resistivity tomography (ERT) in a selected area of the Seram Island in Indonesia. Seram Island lies in the tropical zone between the Seram and Banda seas. The laterite covers are rich in nickel, cobalt, iron and other metals. Concentrations of these metals in the laterites are high enough to form economic deposits. A significant part of the report concerns the measurement technique (ERT method) in difficult climatic (high humidity and temperature) and topographic conditions (equatorial jungle with significant variations in elevation) and the methods of processing and interpretation of the acquired data. The problem seems very interesting, because geophysical prospecting is currently more and more often conducted in poorly accessible regions of the world. Additionally, there are no sufficient and commonly available publications that would allow us to get acquainted with local measurement problems by potential contractors of similar geophysical investigations. The primary result of the geophysical survey was to determine the electrical resistivity of bedrock and laterite. This was the basis for the development of sections of electrical resistive distribution for the ERT profiles, which enabled to estimate the depth to the crystalline basement and the laterite thickness. It also facilitated to produce a map of laterite thickness, which may be an important material to develop the concept of searching and mining of nickel and cobalt ore.
    Źródło:
    Przegląd Geologiczny; 2016, 64, 4; 245--253
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Określenie miąższości zwietrzeliny laterytowej oraz głębokości występowania wód gruntowych w Kibeho (Rwanda) za pomocą pionowych sondowań elektrooporowych
    Determination of laterite eluvium thickness and depth of ground waters occurrence in Kibeho (Rwanda) using vertical electrical sounding method
    Autorzy:
    Mieszkowski, R.
    Kowalczyk, S.
    Tuchołka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063107.pdf
    Data publikacji:
    2011
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    opór elektryczny
    zwietrzelina laterytowa
    woda gruntowa
    układ Schlumbergera
    pionowe sondowanie elektrooporowe SGE
    electrical resistance
    laterite eluvium
    ground water
    Schlumberger array
    vertical electrical sounding (VES)
    Opis:
    W pracy podjęto problem wyznaczenia miąższości zwietrzeliny laterytowej oraz oceny warunków hydrogeologicznych na potrzeby rozwoju infrastruktury związanej z rozbudową Sanktuarium Maryjnego w Kibeho (Rwanda). Jest to pierwsze opracowanie tego typu dla obszaru Kibeho. Celem prac było określenie głębokości zalegania podłoża skalnego pod kątem fundamentowania oraz wskazanie miejsc i głębokości występowania poziomu wody podziemnej, która ma służyć zaopatrzeniu ludności lokalnej oraz pielgrzymów nawiedzających Sanktuarium Matki Boskiej w Kibeho. Do tego celu wykorzystano metodę geofizyczną SGE (pionowe sondowanie elektrooporowe), obserwacje hydrogeologiczne oraz analizę danych wierceń archiwalnych.
    Determination of thickness of a laterite eluvium and evaluation of hydrogeological conditions in the neighbourhood of Kibeho (Rwanda) were described in the paper. The problem was undertaken for further infrastructure development for the extension of the Marian Sanctuary. This is the first study of this type in the Kibeho area. The aim of the work was to determine the depth of the rock bed and ground water table for foundation purposes. The water is necessary for supplying local population and pilgrims visiting the Sanctuary in Kibeho. To realize the aim, the geophysical method (VES – vertical electrical sounding) was used. The hydrogeological observations and measurements as well as the analysis of an archival data were done.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2011, 446 (1); 207--214
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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