| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hélix-Nielsen, Claus
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Facile Fabrication of Flexible Ceramic Nanofibrous Membranes for Enzyme Immobilization and Transformation of Emerging Pollutantscitations
- 2023Facile Fabrication of Flexible Ceramic Nanofibrous Membranes for Enzyme Immobilization and Transformation of Emerging Pollutantscitations
- 2023Synthesis of magnetic nanoparticles with covalently bonded polyacrylic acid for use as forward osmosis draw agentscitations
- 2022Concentrating hexavalent chromium electroplating wastewater for recovery and reuse by forward osmosis using underground brine as draw solutioncitations
- 2021Employing the synergistic effect between aquaporin nanostructures and graphene oxide for enhanced separation performance of thin-film nanocomposite forward osmosis membranescitations
- 2021Impedance characterization of biocompatible hydrogel suitable for biomimetic lipid membrane applicationscitations
- 2021Impact of sodium hypochlorite on rejection of non-steroidal anti-inflammatory drugs by biomimetic forward osmosis membranescitations
- 2019Synthesis of Poly-Sodium-Acrylate (PSA)-Coated Magnetic Nanoparticles for Use in Forward Osmosis Draw Solutionscitations
- 2016Influence of feed composition and membrane fouling on forward osmosis performance
- 2015A reusable device for electrochemical applications of hydrogel supported black lipid membranescitations
- 2015A feasibility study of ultrafiltration/reverse osmosis (UF/RO)-based wastewater treatment and reuse in the metal finishing industrycitations
- 2012Tailoring Properties of Biocompatible PEG-DMA Hydrogels with UV Lightcitations
- 2011Surface Modifications of Support Partitions for Stabilizing Biomimetic Membrane Arrayscitations
- 2011Electrochemical characterization of hydrogels for biomimetic applicationscitations
Places of action
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article
Concentrating hexavalent chromium electroplating wastewater for recovery and reuse by forward osmosis using underground brine as draw solution
Abstract
The purpose of this work was to investigate forward osmosis (FO) for the concentration of hexavalent chromium (Cr (VI)) in electroplating wastewater from processing Acrylonitrile Butadiene Styrene/Polycarbonate plastics to enable the reuse of recovered Cr(VI) in the plating baths. The feed solution (FS) was chromium galvanic wastewater, while the draw solution (DS) was underground brine with osmotic pressures of 28 and 226.8 bar, respectively. Baseline and FO filtrations were performed using commercially available Aquaporin Inside membrane hollow fibre FO (AIM™ HFFO) modules. Each filtration procedure consisted of a sequence of performed baselines, filtrations and cleanings. During the first filtration (F1), the water flux decreased on average from an initial value of 28.7 LMH at 46.7 % water recovery to 18.5 LMH and from 20.1 LMH at 28.4 % water recovery to 16.8 LMH for the second filtration (F2). The corresponding FS volume reduction factors were 1.9 and 1.4 with a concomitant FS concentration factor of Cr (VI) of 1.6 and 1.3 for F1 and F2, respectively. After 1.5 h of filtration, the Cr (VI) rejection by the membrane was 99.74 % and 95.83 % for FO1 and FO2, respectively. As the AIM™ HFFO membrane is negatively charged electrostatic repulsion between the membrane surface and the negative ions (HCrO<sub>4</sub><sup>−</sup> and Cr<sub>2</sub>O<sub>7</sub><sup>2</sup>) will contribute to the rejection of Cr (VI). A loss of integrity of the AIM™ HFFO was observed after the cleaning step which was ascribed to chemical degradation of the membrane due to the oxidizing character of Cr (VI) in the draw solution. Thus, the results show that FO can be used in this type of application, but the membrane material must be adapted to withstand harsh environments.