Autor: Leboda, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Badania nad przydatnością klinoptylolitu do adsorpcji jonów Hg(II),Cr(III) i Ni(II) z roztworów wodnych
On the utility of transcarpthian clinoptylolite in the adsarption of Hg(II),Cr(III) and Ni(II) ionsfrom aqueous solutions
Autorzy:: Gomonaj, V.I.
Golub, N.P.
Szekeresh, K.Y.
Leboda, R.
Skubiszewska-Zięba, J.
Powiązania:: https://bibliotekanauki.pl/articles/237281.pdf
Data publikacji:: 1998
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: klinoptylolit zakarpacki
roztwory wodne
adsorpcja jonów
Opis:: The objective of the study was to assess the usefulness of the Transcarpatien zeolite-clinoptylolite ( Sokirnica,Ukraine) when applied to the removal of Hg(II),Ni(II) and Cr(III) ions from aqueous solutions.The experiments were carried out with three types of clinoptylolite samples-natural,after thermal processing ( 300 and 500.o C),and after chemical modification (with NH4Cl or HCl).Thus,natural clinoptylolote adr clinoptylolite modifical with 3N NH4Cl were found to have a high sorbing capacity.Maximum adsorption of Hg(II) ions (amounting to 4.7 mg/g was achieved within two hours.The adsorption of Ni(II) ions was alamost complete wilin on hour.The efficiency of Cr(III), ion adsorption amounted to 70%. These data indicate that the investigated clynoptilolite has a potential for being effectively used in water treatment for drunking purposes.Ist properties make in also applicable to the removal of heavy metals from wasterwater. A low initial concentrations of Ni(II) and Cr(III), a good treatment effect conbe achieved within a comparatively short time of contact,ar a result of filtration on the clinoptylolite bed.
Źródło:: Ochrona Środowiska; 1998, 4; 3-6
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Badania nad przydatnością zakarpackiego klinoptylolitu do adsorbcji chloroformu z roztworów wodnych
On the utility of Transcarpathian Clinoptylolite in the adsorption of chloroform from aqueous solutions
Autorzy:: Vasylechko, V.O.
Lebedynets, L.O.
Gryshchouk, G.V.
Leboda, R.
Skubiszewska-Zięba, J.
Powiązania:: https://bibliotekanauki.pl/articles/237261.pdf
Data publikacji:: 1998
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: klinoptylolit zakarpacki
roztwory wodne
adsorpcja chloroformu
Opis:: The objective of the study was to determine the sorbing capacity of the transcarpathian clinophylolite ( Ukraine ) when applied to chloroform separation from aqueous solutions. Analyses and measurements included the chemical parameters and porosity of the mineral, as well as the effect of processing temperature, grain size distribution and pH ( of the agueous solution ) on the sorbing properties with respect to water and chloroform.The efficiency of chloroform sorption from the agueous solution ranged from 97 to 99%.This is an indication that the clinoptylolite has a great potential for being effectively used as a sorbend in the concentration of chloroform occuring in agueous solutions.The properties of the clinoptylolite make it applicable not only to analytical procedures,but also to water treatment.
Źródło:: Ochrona Środowiska; 1998, 3; 27-30
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analiza azotanów i bromianów powstających podczas dezynsekcji wody ozonem
Analysis of pollutants found in municipal water and of those forming in the course of ozon disinfection
Autorzy:: Gierak, A.
Leboda, R.
Powiązania:: https://bibliotekanauki.pl/articles/236969.pdf
Data publikacji:: 1999
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: azotany
bromiany
dezynfekcja wody
Opis:: When the surface water to be treated contains bromides and ammonium salts, ozonation will stimulate the formation of bromates, nitrites and nitrates, which have been identified as potential cancerogenic species. The admissible concentration of nitrates defined in Polish Standards is 10 gN/m (which corresponds to ca. 44 gNO3/m3 ). In Germany, the admissible concentration of nitrites must not exceed 0.1 gN/m3 . In Poland, the admissible concentration ofbromates has not been established yet. The maximal admissible concentrations of bromates in drinking water recommended by US EPA and WHO range between 10 and 50mgBr03 /m3. Moreover, it is postulated that, in future, these levels should be decreased to 5 mg/m3 , as soon as appropriate methods have been developed to enable determination of such low bromate levels. The objective of the present study was to discuss the problems that have to be tackled when determining bromate and nitrate concentrations in municipal water by high-performance ion-exchange chromatograpliy (IC-HPLC) or other teclmiques. Our investigations fiave sliown that direct determinations of nitrates and bromates are feasible at concentrations of 2 gNO3/m3 and over 0.2 gBrO3/m3, respectively.
Źródło:: Ochrona Środowiska; 1999, 4; 13-16
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Sorpcja jonów wybranych metali ciężkich na węglu aktywnym
Sorption of selected heavy metal ions on active carbons
Autorzy:: Gierak, A.
Leboda, R.
Powiązania:: https://bibliotekanauki.pl/articles/237672.pdf
Data publikacji:: 2001
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: zanieczyszczenia środowiska
metale ciężkie
sorpcja metali ciężkich
węgiel aktywny
sorbenty węglowe
Opis:: Investigated was the sorption of heavy metals (Fe(III), Pb(II), Ni(II), Co(II) Cd(II) and Zn(II)) from aqueous solutions on carbon adsorbents which varied in surface properties. To examine the efficiency of single metal concentration on the carbon adsorbent use was made of the solid phase extraction technique. The initial carbon material was purchased from GRYFSKAND (Hajnówka, Poland). The adsorbents were processed by a variety physicochemical methods in order to change the porous structure, as well as the amount and type of the polar groups on the surface. Metal concentrations were measured by atomic absorption spectroscopy. Analysis of the sorption isotherms for heavy metals on modified active carbons suggests that the sorption process was affected by the type of the metal sorbed, by the pH of the solution, by the nature of the adsorbent surface and by the presence of other ions in aqueous solution.
Źródło:: Ochrona Środowiska; 2001, 1; 9-15
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Sorpcja wybranych anionów nieorganicznych na węglu aktywnym
Adsorption of selected inorganic anions on active carbons
Autorzy:: Gierak, A.
Leboda, R.
Powiązania:: https://bibliotekanauki.pl/articles/237674.pdf
Data publikacji:: 2001
Wydawca:: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:: zanieczyszczenia środowiska
aniony nieorganiczne
sorpcja anionów nieorganicznych
węgiel aktywny
właściwości sorpcyjne
Opis:: Carbon sorbents differing in surface properties were used for the adsorption of inorganic onions (Cl [-], Br [-], J [-], NO2 [-], NO3 [-], SCN [-], SO4 [2-], C2O4 [2-], CrO4 [2-]) from aqueous solutions. Making use of the solid phase extraction method, single onions, as well as a mixture of those, were investigated for the efficiency of concentration on the carbon sorbent. The initial carbon material (made of plum stones) was purchased from GRYFSKAND (Hajnówka, Poland). In order to change their porous structures, as well as the amount and type of the polar groups on their surfaces, the sorbents were processed by a variety of physicochemical methods. Anion concentrations were measured by ion chromatography and UV-VIS spectroscopy. Analysis of sorption isotherms for inorganic ions on modified active carbons suggests that sorption process was affected by the following factors: the type of the onion sorbed, the nature of the carbon sorbent surface, and the presence of other ions in the solution under test.
Źródło:: Ochrona Środowiska; 2001, 2; 9-14
1230-6169
Pojawia się w:: Ochrona Środowiska
Dostawca treści:: Biblioteka Nauki

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