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Membrane Water Treatment
  Volume 9, Number 2, March 2018, pages 105-113

Polysulfone/nanocomposites mixed matrix ultrafiltration membrane for the recovery of Maillard reaction products
Subhankar Basu, Sanghamitra Mukherjee, Malini Balakrishnan, M. V. Deepthi and R. R. N. Sailaja

    Maillard reaction products like melanoidins present in industrial fermentation wastewaters are complex compounds with various functional properties. In this work, novel ultrafiltration (UF) mixed matrix membrane (MMM) composed of polysulfone (PSF) and nanocomposites was prepared through a phase inversion process for the recovery of melanoidins. Nanocomposites were prepared with acid functionalized multiwalled carbon nanotubes (MWCNTs) as the reinforcing filler for chitosan-thermoplastic starch blend. Higher nanocomposites content in the PSF matrix reduced the membrane permeability and melanoidins retention indicating tighter membrane with surface defects. The membrane surface defects could be sealed with dilute polyvinyl alcohol (PVA) solution. The best performing membrane (1% nanocomposites in 18% PSF membrane sealed with 0.25% PVA coating) resulted in uniform melanoidins retention of 98% and permeability of 3.6 L/m2 h bar over a period of 8h. This demonstrates a low fouling PSF membrane for high melanoidins recovery.
Key Words
    maillard reaction products; melanoidins; ultrafiltration; nanocomposites; mixed matrix membrane
Subhankar Basu, Sanghamitra Mukherjee and
Malini Balakrishnan: The Energy and Resources Institute (TERI), Darbari Seth Block, IHC Complex, Lodhi Road, New Delhi -110003, India

M. V. Deepthi and R. R. N. Sailaja: The Energy and Resources Institute (TERI), Southern Regional Centre, Bangalore, India

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