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  • 1
    Digitale Medien
    Digitale Medien
    Hypochlorite generation on Ru–Pt binary oxide for treatment of dye wastewater (2000)
    Springer
    Journal of applied electrochemistry 30 (2000), S. 1043-1051 
    Details
    ISSN: 1572-8838
    Schlagwort(e): dye wastewater ; hypochlorite production ; Ruthenium–Platinum binary oxides
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract Ruthenium–platinum binary oxides [(Ru + Pt)O x ] were coated on titanium substrates by thermal decomposition. The surface morphologies and elemental analyses of these electrodes were examined by means of scanning electron microscopy. The electrochemical behaviour was characterized by cyclic voltammetry (CV) and linear scanning voltammetry (LSV). The effects of electrolyte conditions on the current efficiency (CE) of hypochlorite production on binary (Ru + Pt)O x electrodes and the treatment of a high salt-containing dye wastewater using this hypochlorite were also investigated. The highest CE for hypochlorite production occurred on the RP1 (20 mol% Pt in precursor) electrode. The major factors influencing CE for hypochlorite production were the electrolyte flow rate, current density and chloride ion (C1−) concentration. The RP1 electrode exhibited the best removal of organics and chromophoric groups in the dye wastewater. On this electrode, better removal of organics and chromophoric groups was obtained at 300 mA cm−2. The colour of black–red dye wastewater became light yellow when a charge of 13.2 A h was passed while the COD of the wastewater decreased from 10 500 to 1250 mg L−1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1004038503410
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  • 2
    Digitale Medien
    Digitale Medien
    Two-compartment behavior during transport of folate compounds in L1210 cell plasma membrane vesicles (1982)
    Springer
    The journal of membrane biology 68 (1982), S. 19-28 
    Details
    ISSN: 1432-1424
    Schlagwort(e): folate transport ; plasma membrane vesicles ; L1210 cells
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Summary The transport of [3H] 1,l 5-formyltetrahydrofolate, [3H] folic acid, and [3H]methotrexate by L1210 cell plasma membrane vesicles exhibited multicompartmental behavior. Two separate vesicular compartments (parallel relationship) of approximately equal volume were revealed during measurements of influx and efflux. Flux in one compartment was rapid, saturable, highly temperature-sensitive, and inhibited by pCMBS. Flux in the other compartment exhibited all of the characteristics of passive diffusion. These results imply that our plasma membrane vesicle preparations consist of a mixture of two functional species. Transport of folate into one of these species occurs by passive diffusion alone, whereas transport into the other kind of vesicle occurs by both passive diffusion and carrier-facilitated transport.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01872250
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