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  • Journal article
    Cocchini U, Nicolella C, Livingston AG, 2002,

    , JOURNAL OF MEMBRANE SCIENCE, Vol: 199, Pages: 101-115, ISSN: 0376-7388
  • Journal article
    Cocchini U, Nicolella C, Livingston AG, 2002,

    , Journal of Membrane Science, Vol: 199, Pages: 101-115, ISSN: 0376-7388

    Aqueous-aqueous extraction experiments were performed in a double tube mass exchanger (DTMEx) in order to investigate mass transfer characteristics of steel-braided non-porous membranes in a contained liquid membrane (CLM) module. Toluene was the permeating molecule, polydimethylsiloxane (PDMS) and ethylene propylene diene monomer (EPDM), were used as non-porous membrane materials, and silicone oil and polypropylene glycol (PPG) as liquid membranes. The liquid membrane contribution to the overall mass transfer resistance was assessed for different module configurations (e.g. varying membrane separation distance) and operating modes (e.g. stationary and mobile liquid membrane). The liquid membrane was found to be the dominant resistance when the module was operated with a stationary liquid membrane, a large separation distance between the braided membranes, and non-porous membranes with high affinity for the permeating molecules. When the liquid membrane was circulated through the module this resistance became negligible compared to the cumulative resistances in the aqueous hydrodynamic boundary layers (HBLs) and membrane at the feed and extractive side, resulting in overall mass transfer coefficients (OMTCs) up to 2.7×10<sup>-5</sup>ms<sup>-1</sup>. CLMs with braided membranes and mobile liquid membrane may therefore be advantageously used for aqueous-aqueous separation of hydrophobic molecules in modules operating with high liquid velocity in the membrane tubes. © 2002 Elsevier Science B.V. All rights reserved.
  • Journal article
    Oliveira TAC, Scarpello JT, Livingston AG, 2002,

    , JOURNAL OF MEMBRANE SCIENCE, Vol: 195, Pages: 75-88, ISSN: 0376-7388
    • Cite
    • Citations: 23
  • Journal article
    Han S, Puech L, Law RV, Steinke JHG, Livingston Aet al., 2002,

    Selection of elastomeric membranes for the separation of organic compounds in acidic media

    , Journal of Membrane Science, Vol: 199, Pages: 1-11, ISSN: 0376-7388
  • Journal article
    Nair D, Scarpello JT, Vankelecom IFJ, Dos Santos LMF, White LS, Kloetzing RJ, Welton T, Livingston AGet al., 2002,

    , GREEN CHEMISTRY, Vol: 4, Pages: 319-324, ISSN: 1463-9262
    • Cite
    • Citations: 45
  • Journal article
    Patterson DA, Metcalfe IS, Xiong F, Livingston AGet al., 2001,

    , INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 40, Pages: 5517-5525, ISSN: 0888-5885
    • Cite
    • Citations: 26
  • Journal article
    Patterson DA, Metcalfe IS, Xiong F, Livingston AGet al., 2001,

    , INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 40, Pages: 5507-5516, ISSN: 0888-5885
    • Cite
    • Citations: 39
  • Journal article
    Nair D, Scarpello JT, White LS, dos Santos LMF, Vankelecom IFJ, Livingston AGet al., 2001,

    , TETRAHEDRON LETTERS, Vol: 42, Pages: 8219-8222, ISSN: 0040-4039
    • Cite
    • Citations: 96
  • Journal article
    Mantzavinos D, Burrows DMP, Willey R, Lo Biundo G, Zhang SF, Livingston AG, Metcalfe ISet al., 2001,

    , WATER RESEARCH, Vol: 35, Pages: 3337-3344, ISSN: 0043-1354
    • Cite
    • Citations: 31
  • Journal article
    Yang XJ, Livingston AG, dos Santos LF, 2001,

    , JOURNAL OF MEMBRANE SCIENCE, Vol: 190, Pages: 45-55, ISSN: 0376-7388
    • Cite
    • Citations: 182
  • Journal article
    Luthra SS, Yang XJ, dos Santos LMF, White LS, Livingston AGet al., 2001,

    , CHEMICAL COMMUNICATIONS, Pages: 1468-1469, ISSN: 1359-7345
    • Cite
    • Citations: 29
  • Journal article
    Han SJ, Ferreira FC, Livingston A, 2001,

    , JOURNAL OF MEMBRANE SCIENCE, Vol: 188, Pages: 219-233, ISSN: 0376-7388
    • Cite
    • Citations: 68
  • Journal article
    Nicolella C, Livingston AG, 2001,

    Mathematical modeling of membrane-attached biofilms

    , CHEMICAL ENGINEERING & TECHNOLOGY, Vol: 24, Pages: 43-46, ISSN: 0930-7516
  • Journal article
    Livingston AG, 2001,

    Membrane bioreactor cleans metal wastewater

    , Industrial Bioprocessing, Vol: 23, ISSN: 1056-7194
  • Journal article
    Oliveira TAC, Cocchini U, Scarpello JT, Livingston AGet al., 2001,

    , JOURNAL OF MEMBRANE SCIENCE, Vol: 183, Pages: 119-133, ISSN: 0376-7388
    • Cite
    • Citations: 24
  • Journal article
    Otal E, Lebrato J, Livingston AG, 2001,

    Polyethylene glycol aerobic biodegradability

    , Tecnologia Del Agua, Vol: 21, Pages: 33-40, ISSN: 0211-8173

    Polyethylebe glycol aerobic biodegradability. Biodegradability of polyethylene glycols of different molecular weight was assesed, due to the recalcitrant natures of these polymeric compounds, produced in many industrial wastewaters, hardly biodegradable. Using discontinuous cultures, inoculated whith and adapted inoculum for polyethylene glycols 10.000 for more than two years, the range from polyethylene glycols 200 to 10.000 could be eliminated. It has been found that biomess adapts to polymers of lower molecular weight, but is insufficient for those of greater weight.
  • Journal article
    Otal E, Mantzavinos D, Lebrato J, Livingston AGet al., 2001,

    Degradation of polyethilene glycol by the integration of chemical and biological treatment

    , Tecnologia Del Agua, Vol: 21, Pages: 55-62, ISSN: 0211-8173

    Biodegradation of polyethylene glycol 10,000 molecular weight or higher presented problems, therefore suggesting that integration of chemical and biological treatments, to achieve complete degradation from these sizes of polyethylene glycol may be advisable. Integration of wet air oxidation and aerobic biological treatments of polyethylene glycol 10,000 was investigated. The organic compound, used as the sole carbon and energy source, was partially oxidized in a high pressure reactor achieving a 7% of total organic carbon removal. Enhanced biodegradability was assessed by comparing total organic carbon removal using an Aerobic Continuous-flow Stirred Reactor fed with untreated original organic or previously oxydized samples. The reactor operated at steady-state at loading rates of total organic carbon of 69 mg L-1 d-1 for untreated polyethylene glycol 10,000, and 520 mg L-1 d-1 for wet air oxidation-treated polyethylene glycol 10 000, reaching yields of 68% and 82% of total organic carbon removal, respectively. Even using a retention time 8-fold shorter, total organic carbon removal from the wet air oxidation-treated sample was higher than that from the untreated one. Therefore, previous wet air oxidation treatment may improve efficiency of conventional biological treatment of industrial waste waters containing this organic compound.
  • Journal article
    Chuichulcherm S, Nagpal S, Peeva L, Livingston Aet al., 2001,

    Treatment of metal-containing wastewaters with a novel extractive membrane reactor using sulfate-reducing bacteria

    , JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, Vol: 76, Pages: 61-68, ISSN: 0268-2575
    • Cite
    • Citations: 32
  • Journal article
    Nagpal S, Chuichulcherm S, Livingston A, Peeva Let al., 2000,

    , BIOTECHNOLOGY AND BIOENGINEERING, Vol: 70, Pages: 533-543, ISSN: 0006-3592
    • Cite
    • Citations: 109
  • Journal article
    Steinig GH, Livingston AG, Stuckey DC, 2000,

    , BIOTECHNOLOGY AND BIOENGINEERING, Vol: 70, Pages: 553-563, ISSN: 0006-3592
    • Cite
    • Citations: 11

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