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Research Papers by Maria Norberta de Pinho

Bench-scale dissolved air flotation (DAF) of Tagus River surface water (Valadas, Portugal) was investigated as pre-treatment for spiral-wound module nanofiltration (SWNF). Before the DAF, a coagulation/flocculation of the surface water was performed using aluminium sulphate, ferric chloride an ...
Desalination 228 (2008)
Desalination 199 (2006)
Membrane fouling has been identified as one of the major problems during the treatment by ultrafiltration (UF) of the cork processing wastewaters. This problem leads to the drastic reduction of the UF permeate fluxes and is often attributed to the fact that these wastewaters are rich i ...
Desalination 191 (2006)
A mass transfer coefficient determination method, based on the velocity variation method, is developed for pressure-driven membrane modules with large membrane area and high recovery rates. The method was used to measure mass transfer coefficients in the nanofiltration spiral-wound module Filmte ...
Desalination 195 (2006)
Natural Organic Matter (NOM) is abundant in natural waters and is one of the major fouling agents during membrane filtration of surface water. This work addresses the evaluation of the influence of the membrane pore size on the permeation characteristics of humic acid solutions. Five cellulos ...
Desalination 145 (2002)
The laminar flow structure and concentration distribution in a narrow rectangular channel simulating the feed channel of nanofiltration (NF) spiral-wound modules are investigated. The continuity, Navier–Stokes equations and the solute continuity equation are solved by the control volum ...
Desalination 146 (2002)
This work addresses the enzymatic hydrolysis of beechwood xylan on a membrane reactor with tangential flow over an ultrafiltration membrane. The hydrolysis was carried out on concentration mode, with circulating substrate, and results were compared with those obtained for batch assays. Th ...
Desalination 149 (2002)

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