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Wyświetlanie 1-15 z 24373
Tytuł:
Separation Of Cadmium(II), Cobalt(II) And Nickel(II) By Transport Through Polymer Inclusion Membranes With Phosphonium Ionic Liquid As Ion Carrier
Separacja jonów kadmu(II), kobaltu(II) i niklu(II) w procesie transportu przez polimerowe membrany inkluzyjne zawierające fosfoniową ciecz jonową w roli przenośnika
Autorzy:
Pospiech, B.
Powiązania:
https://bibliotekanauki.pl/articles/352721.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cadmium(II)
cobalt(II)
nickel(II)
Cyphos IL 101
polymer inclusion membrane
kadm(II)
nikiel(II)
kobalt(II)
polimerowe membrany inkluzyjne
Opis:
This paper presents study on the facilitated transport of cadmium(II), cobalt(II) and nickel(II) ions from aqueous chloride solutions through polymer inclusion membranes (PIMs) with phosphonium ionic liquid. Cyphos IL 101 (trihexyl(tetradecyl) phosphonium chloride) was used as a selective carrier for synthesis of cellulose triacetate membranes containing o-nitrophenyl pentyl ether (ONPPE) as a plasticizer. Effect of different parameters such as hydrochloric acid concentration in the source phase as well as ion carrier concentration in the polymer membrane on metal ions transport has been investigated. Cd(II) was transported preferably from hydrochloric acid solutions containing Co(II) and Ni(II) through PIM containing 18.8 wt.% CTA and 26.0 wt.% Cyphos 101 and 55.1 wt.% ONPPE into 0.5 M HNO3 as the receiving phase. The obtained results suggest that there is a possibility of application of this membrane with Cyphos IL 101 as ion carrier for separation of Cd(II) over Co(II) and Ni(II) from hydrochloric acid solutions.
Przeprowadzono badania transportu jonów Cd(II), Ni(II) i Co(II) z wodnych roztworów kwasu solnego przez polimerowe membrany inkluzyjne (PIMs) zawierające fosfoniową ciecz jonową – Cyphos IL 101 (chlorek triheksylo(tetradecylo) fosfoniowy) w roli selektywnego przenośnika jonowego. Rolę polimerowej matrycy w membranie pełnił trioctan celulozy (CTA). Jako plastyfikatora użyto eteru nitrofenylopentylowego (ONPPE). W wyniku badań określono wpływ różnych czynników, takich jak stężenie kwasu solnego w fazie zasilającej, jak również stężenie przenośnika w polimerowej membranie na selektywność i efektywność transportu badanych jonów metali. Jony kadmu(II) były selektywnie transportowane z roztworów kwasu solnego zawierającego jony niklu(II) i kobaltu(II) do 0,5 M roztworu kwasu azotowego(V). Uzyskane wyniki wskazują, że istnieje możliwość zastosowania procesów transportu przez polimerowe membrany inkluzyjne z cieczą jonową w roli selektywnego przenośnika do rozdzielania jonów Cd(II) od Ni(II) i Co(II) z roztworów kwasu solnego.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 4; 2933-2938
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of palladium(II) from mixtures of non-ferrous metal ions by solvent extraction
Autorzy:
Radzyminska-Lenarcik, E.
Witt, K.
Powiązania:
https://bibliotekanauki.pl/articles/115497.pdf
Data publikacji:
2016
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
metal separation
cobalt(II)
nickel(II)
copper(II)
palladium(II)
solvent extraction
alkylimidazole
separacja metali
kobalt(II)
nikiel(II)
miedź(II)
pallad(II)
ekstrakcja rozpuszczalnikiem
alkiloimidazole
Opis:
The possibility of Pd(II) ions separation from mixtures of Co(II), Ni(II), Cu(II) and Pd(II) ions by solvent extraction was studied, using 1-hexyl-2methylimidazole in chloroform as the extractant. The initial concentration of each ion was 10 mM. The tests were carried out at a temperature of 25°C, at a constant strength of the aqueous solution of I = 0.5, as maintained by the KCl solution. It was demonstrated that differences in the stability and structure of their coordination sphere as well as solubility of complexes with the extractant could be used for separating the Co(II), Ni(II), Cu(II) and Pd(II) ions by solvent extraction. Pd(II), which forms flat-square complexes in the solutions, passes easily into the organic phase and is easier separated from the mixture of Co(II), Ni(II), Cu(II) ions, which form octahedral or tetrahedral complexes. Extraction percentages were calculated. For the respective metals, their values increase for increasing concentrations of the extractant in the aqueous phase. The extraction percentage decreases in the following order: Pd(II) > Cu(II) > Co(II) > Ni(II). In the case of the quaternary mixture, the highest extraction percentage for Pd(II) (70%) was obtained at a pH=7.33. Separation coefficients were also calculated. The highest separation coefficients were obtained for the system: Pd(II)/Ni(II), Pd(II)/Co(II); at a pH of 5.4 for an aqueous solution, their values are 13.3 and 7.7, respectively.
Źródło:
Challenges of Modern Technology; 2016, 7, 1; 17-22
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zinc(II) selective removal from other transition metal ions by solvent extraction and transport through polymer inclusion membranes with D2EHPA
Autorzy:
Ulewicz, M.
Walkowiak, W.
Pośpiech, B.
Powiązania:
https://bibliotekanauki.pl/articles/346997.pdf
Data publikacji:
2003
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
polymer inclusion membrane
solvent extraction
zinc(II)
cobalt(II)
nickel(II)
copper(II)
cadmium(II)
Opis:
An experimental investigation concerns zinc(II), cobalt(II), nickel(II), copper(II) and cadmium(II) ions separation from aqueous chloride solutions by solvent extraction and transport through polymer inclusion membrane (PIM) processes. The selective transport of metal ions from the aqueous chloride source phase through PIM containing cellulose triacetate (support), o-nitrophenyl pentyl ether (plasticizer) and di(2-ethylhexyl)phosphoric acid (ion carrier) is shown. Zn(II) can be effectively removed from dilute aqueous chloride solutions by its transport through PIMs with di(2-ethylhexyl)phosphoric acid as the ionic carriers into 1.0 M HCl as the receiving phase. The transport selectivity of Zn(II) over Co(II), Ni(II), Cu(II) and Cd(II) decreases while the pH of the solution increases in the source phase. Also, by solvent extraction, Zn(II) can be selectively removed from dilute aqueous chloride solutions.
Źródło:
Ars Separatoria Acta; 2003, 2; 47-55
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transport of transition metal ions through polymer inclusion membranes with Cyanex 301
Autorzy:
Ulewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/347064.pdf
Data publikacji:
2004
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
polymer inclusion membrane
zinc(II)
cadmium(II)
copper(II)
cobalt(II)
nickel(II)
Cyanex 301
Opis:
The selective transport of zinc(II) and cadmium(II) ions from aqueous chloride or sulfate source phase through polymer inclusion membranes (PIM) containing cellulose triacetate (support), o-nitrophenyl pentyl ether (plasticizer) and di(2,4,4-trimethylpentyl)dithiophosphinic acid - Cyanex 301 (ion carrier) is shown. Zn(II) and Cd(II) ions can be effectively removed from dilute chloride and sulfate aqueous solutions into 1.0 M HCl or H2SO4 as the receiving phase. The separation coefficients were practically constant for acid concentrations in the receiving phase ranging from 0.01 to 1.0 M Copper(II), zinc(II), cadmium(II), cobalt(II), and nickel(II) ions removal from aqueous chloride solutions in transport through PIMs is also shown. These metal ions can be effectively removed from dilute aqueous chloride solutions in transport through PIMs with di(2,4,4-trimethylpentyl)dithiophosphinic acid as the ionic carriers into 1.0 M HCl. The selectivity coefficients of Cu(II) over Zn(II), Cd(II), Co(II) and Ni(II) were low and decreased with an increase in the pH of source aqueous phase.
Źródło:
Ars Separatoria Acta; 2004, 3; 81-88
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lead(II) removal from aqueous solutions by solvent extraction with tetracarboxylresorcin[4]arene
Autorzy:
Konczyk, J.
Kozlowski, C.
Walkowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/110670.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
solvent extraction
lead(II)
zinc(II)
cadmium(II)
resorcinarene
Opis:
A novel tetracarboxylresorcin[4]arene was synthesized and its selective complexing ability towards Pb(II) ions was examined. The influence of several parameters such as pH of aqueous phase, agitation time, extractant and modifier concentrations on solvent extraction of Pb(II) ions from the aque-ous nitrate phase into chloroform organic phase was studied. The stoichiometry of the formed metal-ligand complexes was established by slope analysis. Pb(II) ions were quantitatively extracted in the form of 2:1 Pb(II)-resorcin[4]arene complex from aqueous solutions of pH 5.5 to the solution of ligand in chloroform. Competitive solvent extraction experiments in the presence of Zn(II) and Cd(II) ions were also carried out and high selectivity of the extractant towards Pb(II) over Zn(II) and Cd(II) was found. The selectivity order was: Pb(II) >> Cd(II) > Zn(II).
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 213-222
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of the steric effect of the carrier molecule in the polymer inclusion membranes for the separation of cobalt(II), nickel(II), copper(II), and zinc(II) ions
Autorzy:
Radzyminska-Lenarcik, E.
Ulewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/778754.pdf
Data publikacji:
2015
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
polymer inclusion membrane
separation ions
steric effect
copper(II)
cobalt(II)
nickel(II)
cadmium(II)
zinc(II)
alkylimidazole
Opis:
In this study, palladium-modified nickel foam substrate was applied to examine ethanol oxidation reaction (EOR) in 0.1 The transport of cobalt(II), nickel(II), copper(II), and zinc(II) ions from chloride solutions across polymer inclusion membranes (PIMs), which 1-heptylimidazole (1̲) or 1-heptyl-2-methylimidazole (2̲) or 1-heptyl-4-methylimidazole (3̲) as the ion carrier was reported. The steric effect for carriers 2̲&enspand 3̲&enspdecreases the transport of all ions except Cu(II). The initial fluxes of metal ions transport across PIMs with the 1̲- 2̲&enspdecrease in the sequence: Cu(II) > Zn(II) > Co(II) > Ni(II), whereas for 3 they were Cu(II) > Zn(II) > Ni(II) > Co(II). The highest recovery values were obtained for Cu(II), this being 99 and 85% for carrier 1̲&enspand 2̲, respectively. In both membranes the degree of deposition of the Zn(II) ions was comparable. Zn(II), Co(II) and Cd(II) ions, which form complexes with coordination numbers 4 and 6, are more easily recovered with the use of carriers 2̲&enspand 3̲. Ni(II) ions, which form complexes with coordination number 6 only, practically remain in the feeding phase. PIMs with alkylimidazoles were characterized by non-contact atomic force microscopy.
Źródło:
Polish Journal of Chemical Technology; 2015, 17, 2; 51-56
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
N-(diethylthiophosphoryl)-aza[18]crown-6: synthesis and ability of solvent extraction toward lead(II), zinc(II) and cadmium(II) metal cations
Autorzy:
Kozlowska, J.
Miroshnichenko, S.
Powiązania:
https://bibliotekanauki.pl/articles/346955.pdf
Data publikacji:
2013
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
crown ethers
solvent extraction
lead(II)
zinc(II)
cadmium(II)
Opis:
This work presents the synthesis of a strongly hydrophobic, functionalized monaza crown ether, i.e., lariat ether, namely N-(diethylthiophosphoryl)-aza[18]crown-6 and its application as ion extractant in solvent extraction systems. The synthesis of thiophosphorylated aza[18]crown-6 was performed with good yield. Separation systems have been successfully developed to extract Pb(II), Cd(II) and Zn(II) into organic phase, i.e., chloroform with the crown ethers: aza[18]crown-6 and N-(diethylthiophosphoryl)-aza[18] crown-6 as extractants. The selectivity order in both crown ethers was Pb(II) >> Cd(II) > Zn(II). The obtained results suggest that N-(diethylthiophosphoryl)-aza[18]crown-6 can be used for the selective removal of Pb(II) at lower pH values than aza[18]crown-6.
Źródło:
Ars Separatoria Acta; 2012-2013, 9/10; 7-14
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podwójne wybory papieża w r. 1130
Autorzy:
Petrani, Aleksy
Powiązania:
https://bibliotekanauki.pl/articles/1969156.pdf
Data publikacji:
1949
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
Honoriusz II
Innocenty II
Anaklet II
konklawe
synod w Etampes
Opis:
Artykuł dotyczy podwójnych wyborów papieża w r. 1130.
Źródło:
Roczniki Humanistyczne; 1949, 1; 17-38
0035-7707
Pojawia się w:
Roczniki Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nickel-cobalt separation by solvent extraction method
Autorzy:
Radzyminska-Lenarcik, E.
Wasilewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/115651.pdf
Data publikacji:
2015
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
separation ions
solvent extraction
cobalt(II)
nickel(II)
alkylimidazole
separacja jonów
ekstrakcja rozpuszczalnikowa
kobalt(II)
nikiel(II)
alkiloimidazol
Opis:
Separation of cobalt(II), and nickel(II) ions from nitrate solutions using liquid-liqiud extraction process was reported. The measurements were run at 25oC and at fixed ionic strength equal to 0.5 (KNO3,HNO3). Initial concentrations of Co(II) and Ni(II) nitric acid in the aqueous phase were constant (0.01 M and 0.15 M, respectively). Both 1-hexylimidazole (1), and 1-hexyl-2-methylimidazole (2), both in dichloromethane were used as extractants. Their concentrations in organic phase were varied from 0.01 to 0.25 M. Cobalt(II) in an aqueous solution forms both tetrahedral and octahedral complexes. Nickel(II) forms only a six-coordinate complexes. These general differences help to provide the basis for the various separation processes currently used for cobalt-nickel separation. The steric effect for extractant 2 facilitates the extraction of tetrahedral Co(II) complexes. Extraction percent (%E) of cobalt(II) and nickel(II) in the systems studied were calculated. The percentage extraction increases for increasing values of pH of aqueous phase and is the highest for pH = 7.2. In the aqueous phase, of which the pH = 7.2, there remain 75%Ni(II) and 40% Co(II) for extractant 1 and the respective values for extractant 2 are 85% Ni(II) and 20% Co(II). The steric effect increases selectivity coefficients Co(II)/Ni(II). The highest selectivity coefficients for both extractants were obtained at a pH of aqueous phase = 6.2; their values were 5 and 8.9 for extractants 1 and 2, respectively.
Źródło:
Challenges of Modern Technology; 2015, 6, 3; 20-23
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of NO with methane over metal ion-exchanged mordenite
Autorzy:
Ćwikła-Bundyra, W.
Powiązania:
https://bibliotekanauki.pl/articles/346983.pdf
Data publikacji:
2011
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
selective catalytic reduction of NO
mordenite
catalysts
Co(II)
Ni(II)
Cu(II)
Opis:
This article presents the results of research studies on the possibilities of application of natural zeolite-mordenite for the reduction of nitrogen oxide. Various kinds of metal ions were added to the zeolite samples using the ion-exchange method. The effect of metal contents was shown for the mordenite and related to their catalytic properties. The catalytic properties of Cu-, Co-, Ni- were compared for NO reduction with methane. High nitric oxide conversions were observed for copper and cobalt-mordenite, especially in the temperature range between 400 and 500 C degree. Copper- and cobaltmordenite catalysts showed higher activities and selectivities than catalysts composed of nickel-exchanged mordenite.
Źródło:
Ars Separatoria Acta; 2011, 8; 109-119
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of 1-alkylimidzoles for selective separation of zinc ions in the transport process across a polymeric inclusion membrane
Autorzy:
Radzyminska-Lenarcik, E.
Ulewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/110913.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
polymer inclusion membrane (PIM)
separation ions
cobalt(II)
nickel(II)
zinc(II)
alkylimidazole
Opis:
The transport of Zn(II) ions from different aqueous nitrate(V) source feeding phases (cMe = 0.001 mol/dm3, pH 6.0) across polymer inclusion membranes (PIMs) doped with 1-alkylimidazole as an ion carrier was reported. Alkyl substituents in position 1 of imidazole ring have an effect on hydrophobic properties of the carriers and the initial flux of the transported metal ions. The membranes were characterized by an atomic force microscopy (AFM). The results show that the Zn(II) ions could effectively be separated from other transition metal cations such as Co(II) and Ni(II) from different equimolar ion mixtures. Also, the thermal stability of PIM doped with 1-decylimidazole was studied in replicate experiments. The highest separation coefficients for the Zn(II)/Co(II) and Zn(II)/Ni(II) systems, equal to 9.4 and 11.9 were recorded for the equimolar Zn(II)-Co(II)-Ni(II) mixture for 1-hexylimidazole as a carrier, while using 1-decylimidazole resulted in the highest values of initial flux of the Zn(II) ions transport across the polymeric membrane.
Źródło:
Physicochemical Problems of Mineral Processing; 2014, 50, 1; 131-142
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proton - ionnizable lariat ethers - new generation of collectors in ion flotation process
Jonizowane etery lariatowe - nowa generacja kolektorów w procesie flotacji jonowej
Autorzy:
Maciejewski, P.
Robak, W.
Ulewicz, M.
Walkowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/348349.pdf
Data publikacji:
2007
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
flotacja jonowa
cez(I)
stront(II)
bar(II)
ołów(II)
etery lariatowe
Opis:
Autorzy artykułu przedstawili badania selektywnego wydzielania wybranych kationów metali z rozcieńczonych roztworów wodnych z użyciem nowej grupy związków makrocyklicznych, tj. jonizowanych eterów lariatowych w obecności spieniacza niejonowego.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2007, 3; 108-127
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znamiona przesłania społeczno-moralnego Jana Pawła II
Hallmarks of socio-moral message of John Paul II
Autorzy:
Dziuba, Andrzej F.
Powiązania:
https://bibliotekanauki.pl/articles/502367.pdf
Data publikacji:
2012
Wydawca:
Wyższe Seminarium Duchowne w Łodzi
Tematy:
Jan Paweł II
nauczanie społeczne Jana Pawła II
Opis:
The civilization of love is integral, anthropocentric and conceivable in order to explore more entirely visions of a “new world”. The moral and religious expression of man’s life discovers in this image its profound harmony in the personal structure built on the plan of real interpretation of the fact of humanity. The fundamental expression of this is the priority of the person over things. Today there is a great danger of not noticing this truth. However there is also a need to recognize the priority of ethics over technology, because the achievements in this area seem to suggest that everything that is plausible should have the possibility of implementation. The fundamental sign for the civilization of love is the primacy of “essere” over “avere”“Essere” before “avere” affects human and cultural expectations that are unfortunately denied by materialism, trends in the economy and consumerism. Only Christianity as the first showed the primacy of charity over justice, drawing on the truth of God revealed in Christ. It is a principle which places great demands in life, especially in interpersonal relationships. This is one of the most human principles, which bears witness to personal greatness of each man. The civilization of love remains as a challenge for today’s Europe, which seems to reject and abandon values departing from its roots.
Źródło:
Łódzkie Studia Teologiczne; 2012, 21; 71-87
1231-1634
Pojawia się w:
Łódzkie Studia Teologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postawa chrześcijan Kościoła perskiego w czasie prześladowań Szapura II
The attitude of Persian Christian church during the persecution of Shapur II
Autorzy:
Teister, Wojciech
Uciecha, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/612316.pdf
Data publikacji:
2012
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Kościół perski
Szapur II
Persian Christian
Shapur II
Opis:
The subject of this article deals with Persian Christians in the period of the persecution of Shapur II. The ruler derived from the Sassanid dynasty had governed the Persian Empire since 309 to 379 and on that time of his reign Sassanid Empire saw its first golden era. The three source accounts were analysed: Demonstrations of Aphrahat, The History of the Hermias Sozomenus and Chronica Seertensis – nestorianical source dated from the IX or X century. Each of analysed reports concerning the persecution of the Persian Christians appears to be interesting and noteworthy. In his Church History Hermias accepted the role of external factors in origin and turn of events of Church persecution in Persia in the IV century (magicians and Jews). Nestorian author of Chronica Seertensis has also made observations of these groups in forming the antichristian politics of the Persian ruler but besides that he even expands theological reflection: the persecution should be interpreted as the time of trial, strengthening the faith and calling on to convert. The Aphrahat in his Demonstrations, particularly in his Synodical Letter had briefed the similar historical-redemptive conception in the martyr theology but judging the posture of Simeon negatively.
Źródło:
Vox Patrum; 2012, 57; 667-676
0860-9411
2719-3586
Pojawia się w:
Vox Patrum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of lead(II) and copper(ii) by plasticizer membranes with sulphur ana-logus of phosphinic acids as carriers
Autorzy:
Kolodziejska, M.
Kozlowski, C.
Ulewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/110836.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
plasticizer membranes
organophosphorous acids
lead(II)
copper(II)
Opis:
Investigation of selective removal of Pb(II) and Cu(II) from acidic nitrate aqueous solutions using transport across polymer inclusion membranes PIMs was performed. The sulphur analogus of phosphinic acids, i.e. bis(2,4,4-trimethylpentyl)monothiophosphinic acid (1) and tert-butyl(phenyl)- phosphinothioic acid (2) as well as their mixture were incorporated into polymer inclusion membranes composed of cellulose triacetate as a support and o-nitrophenyl octyl ether as a plasticizer. In the experi-ments the transport of Cu(II) across PIM with 1 was rapid and complete, however the lead(II) removal increased with increased membrane saturation. Selective transport of Cu(II) over Pb(II) through PIMs with binary carrier system (1 + 2) was observed; the selectivity order was: Cu(II) >> Pb(II). At tempera-ture of 50C the selectivity coefficient Cu(II)/Pb(II) for membrane with binary carriers was the highest and was equal to 758.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 267-276
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 24373

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