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1
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Ars Separatoria Acta
2002 No. 1 71-78
EN The method of vegetable oil bleaching by adsorption of impurities using activated bentonite involves the necessity of its regeneration. Studies on the yield of fatty impurities extraction by ethanol, isopropanol at the temperatures 35; 50; 65°C in alkaline medium at NaOH or KOH concentration range f[...]
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Ars Separatoria Acta
2007 No. 5 55-67
EN Microcapsules containing tri-n-octylamine as an extractant with the diameter of less than 25µm were prepared by using SPG membrane emulsification and insitu polymerization method. The morphologies of microcapsules, the encapsulation efficiencies of tri-n-octylamine, the extraction properties of pall[...]
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Ars Separatoria Acta
2004 No. 3 62-71
EN 25,26,27,28-Tetrakis(carboxymethoxy)-5,11,17,23-tetraallylcalix[4]arene in a cone conformation has been synthesized for the selective extraction of divalent lead ions. The extraction of divalent metal ions, such as lead, copper, nickel and zinc with p-allycalix[4]arene tetracarboxylic acid was inves[...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
PL Ciągła dostępność pozycji jest jednym z najważniejszych problemów związanych z ludzką działalnością na morzu. Ponieważ dostępność elektronicznych systemów nawigacyjnych może być ograniczona w niektórych przypadkach (np. podczas operacji wojskowych), powinno się rozważyć dodatkowe metody gromadzenia [...]
EN The problem of continuous position availability is one of the most important issues connected with human activity at sea. Because the availability of the electronic navigational systems can be limited in some cases (for example during military operations) we should consider additional methods of ga[...]
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Physicochemical Problems of Mineral Processing
EN The effects of time, composition and history of preparation of the aqueous phase on the liquidliquid extraction of chromium(III) with Aliquat 336 from the aqueous alkaline solutions containing chlorides were studied. At time far from the equilibrium the yield and initial rate of the chromium(III) ex[...]
6
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Zeszyty Naukowe. Inżynieria Chemiczna i Procesowa / Politechnika Łódzka
1999 Z. 26 215-219
PL Przeprowadzono badania doświadczalne procesu separacji 1,3-propanodiolu z rozcieńczonego roztworu wodnego. Opracowano założenia procesu separacji 1,3-propanodiolu w układzie reakcji diolu do 2-metyio-1,3-dioksanu z równoczesną ekstrakcją produktu przez wyselekcjonowany związek organiczny. Selekcja e[...]
EN The separation of 1,3-propanediol from dilute aqueous solutions was studied The liquid extraction was shown to be ineffective. A process combining reaction of 1,3-propanediol to 2-methyl-1,3-dioxane with a simultaneous extraction of the product by organic solvent appears to be technically feasible a[...]
7
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Rocznik Ochrona Środowiska
2012 Tom 14 597--606
EN Precipitates and sludges from the galvanic industry are one of the sources of the environment contamination with heavy metals. Therefore, the investigations are carried out in order to developer the effective method of metals elimination from these wastes. The promising results are obtained in case [...]
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Przemysł Chemiczny
9
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Przemysł Chemiczny
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Physicochemical Problems of Mineral Processing
2003 Vol. 37 97-105
PL W pracy przedstawiono wyniki badań ekstrakcji cynku(II) z modelowych roztworów kwasu solnego w modułach z włóknami kapilarnymi. Stwierdzono, że cynk(II) może być usuwany z badanych, modelowych roztworów przy pomocy zarówno 40%, jak i 80% roztworów fosforanu tributylu w nafcie. Sformułowano i ekspery[...]
EN The recovery of zinc(II) from model hydrochloric acid solutions in hollow fiber modules was studied. It was found that zinc(II) could be removed from these model solutions by 80% and 40% tributyl phosphate in kerosene. A steady-state and an unsteady-state models of zinc(II) extraction in hollow fibe[...]
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Wiadomości Chemiczne
2003 [Z] 57, 7-8 627-647
EN This paper is a review of hydrometallurgical processes of removal and separation of zinc(II) and cadmium(II) ions from chloride, sulphate and other medium aqueous solutions. The following physicochemical methods were described: solvent extraction, transport across liquid membranes (bulk liquid membr[...]
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Archiwum Ochrony Środowiska
PL Gleby na terenie gminy Dąbrowa Górnicza charakteryzują się podwyższoną zawartością metali ciężkich. Najwyższe zawartości ołowiu przekraczają 650 mg/kg, kadmu 15 mg/kg i cynku 1000 mg/kg gleby. Próbki gleby z wybranych punktów podano analizie specjacyjnej według Tessiera w modyfikacji Kerstena i Fors[...]
EN Elevated content of heavy metals in soils is characteristic of the Dąbrowa Górnicza region. The highest concentrations of lead, cadmium and zinc exceed here 650, 15, and 1000 mg/kg of soil, respectively. Samples of soil from selected sites underwent the speciation analysis with the use of the Tessie[...]
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Chemia Analityczna
PL Zbadano ekstrakcję Ln(III) (Pr, Nd, Sm, Eu) roztworami 5,7-dichloro-8-hydroksy-chinoliny w chloroformie z fazy wodnej i wodno-metanolowej. Wyznaczono parametry ekstrakcji i obliczono współczynniki separacji poszczególnych par badanych lanta-nowców. W obecności metanolu w fazie wodnej zaobserwowano e[...]
EN The extraction of Ln(III) (Pr, Nd, Sm, EU) with 5,7-dichloro-8-hydroxyquinoline in chloroform from water and water-methanol phase was studied. The parameters of the extraction process were determined and the separation factors of investigated pairs of lan-thanides were calculated. In the presence of[...]
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Nukleonika
EN Optimization of selective extraction conditions for separating plutonium from uranium and thorium standard solutions using methytrioctylammonium chloride (Aliquat 336) as extracting agent is presented. Influence of such parameters as concentration of extracting agent and nitric acid, and kind of red[...]
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Nukleonika
EN The self-extracting cyclotron is a high-intensity 14 MeV H+ machine for isotope production. There is no electrostatic deflector. Extraction is achieved with a special shaping of the magnetic field. There are two long poles and two short poles, both with an elliptical gap profile; this provides a ste[...]
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Polish Journal of Chemical Technology
EN In the light of environmental law utilization lignite waste in non-energy sectors of the economy is a national way to manage them. Lignite due to the lower degree of coalifi cation and calorifi c value as well as a high content of humic substances becomes a valuable component of fertilizer. The pape[...]
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Polish Maritime Research
2017 S 3 235--242
EN The result of the extraction of the edge and contour information of the multifunctional digital ship image directly affects the evaluation and recognition of the subsequent image quality. At present, the common method used to extract the edge contour information is based on the Canny operator, and t[...]
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Polish Journal of Chemical Technology
EN Pesticide pollution is a serious problem being faced. Harmful levels of pesticides are found in the water which is used for daily purposes. In the event of such a scenario, this paper presents a working solution for bringing down the Pesticide levels in the water to safe levels by using the method o[...]
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Bio-Algorithms and Med-Systems
EN This paper describes a methodology for discovering and resolving protein names abbreviations from the full-text versions of scientific articles, implemented in the PRAISED framework with the ultimate purpose of building up a publicly available abbreviation repository. Three processing steps lie at t[...]
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Ars Separatoria Acta
EN Large-diameter and through-hole type microcapsule with entrapped trioctylamine (TOA) as an extractant were prepared by (W/O/W) emulsification and in-situ polymerization method. The morphologies of the microcapsules, their encapsulation efficiencies for TOA, and their forward and back extraction prop[...]
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