J
João G. Crespo
Researcher at Universidade Nova de Lisboa
Publications - 343
Citations - 10395
João G. Crespo is an academic researcher from Universidade Nova de Lisboa. The author has contributed to research in topics: Membrane & Ionic liquid. The author has an hindex of 48, co-authored 311 publications receiving 8673 citations. Previous affiliations of João G. Crespo include University of Lisbon & Fritz Haber Institute of the Max Planck Society.
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Methanol and gas crossover through modified Nafion membranes by incorporation of ionic liquid cations
TL;DR: In this paper, the effect of using different degrees of incorporated ionic liquid cations, as well as the type of IL cation incorporated, in the transport of gases and methanol was studied in detail.
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CFD modelling of flow patterns, tortuosity and residence time distribution in monolithic porous columns reconstructed from X-ray tomography data
Sylwin Pawlowski,Nayan Nayak,Nayan Nayak,Martine Meireles,Carla A.M. Portugal,Svetlozar Velizarov,João G. Crespo +6 more
TL;DR: In this paper, a direct computational fluid dynamics (CFD) modeling approach is proposed to simulate flow behavior in monolithic porous columns, where morphological structure of a fabricated alumina monolith was first reconstructed using 3D X-ray tomography data and, subsequently, OpenFOAM, an open-source CFD tool, was used to simulate the essential parameters for monoliths' performance characterisation and optimisation, i.e., velocity and pressure fields, fluid streamlines, shear stress and residence time distribution.
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Mechanism of charged pollutants removal in an ion exchange membrane bioreactor: Drinking water denitrification
TL;DR: By adjusting the ratio of co-ions between the biocompartment and the polluted water compartment, the magnitude and direction of each individual anion flux can be easily regulated, allowing for flexible process operation and control.
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Removal of pesticides from water combining low pressure UV photolysis with nanofiltration
Sandra Sanches,A. Penetra,A Rodrigues,Vitor Vale Cardoso,Eric M. Ferreira,Maria João Benoliel,M.T. Barreto Crespo,João G. Crespo,V.J. Pereira +8 more
TL;DR: In this paper, the combination of low pressure ultraviolet photolysis and nanofiltration proved to be extremely efficient for the treatment of drinking water since several emerging pesticides spiked in surface water were found to be highly removed.
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Integration of nanofiltration, UV photolysis, and advanced oxidation processes for the removal of hormones from surface water sources
TL;DR: In this article, the integration of nanofiltration with direct and indirect UV photolysis for drinking water treatment was evaluated and shown to be extremely efficient to remove all the target hormones from a real surface water matrix and guarantee the production of water with extremely high chemical quality.