| 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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Ferreira, C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Thermo-chemo-hygro-mechanical simulation of the restrained shrinkage ring test for cement-based materials under distinct drying conditionscitations
- 2017Stiffness Behavior of Soil Stabilized with Alkali-Activated Fly Ash from Small to Large Strainscitations
- 2016Distribution of toxic elements in teeth treated with amalgam using mu-energy dispersive X-ray fluorescencecitations
- 2016Development of high-performance knitted structures for cut and puncture protection
- 2016Estrutura fibrosa auxética com fios de elevado desempenho para proteção mecânica
- 2015Development of High-performance Single Layer Weft Knitted Structures for Cut and Puncture Protection
- 2014Influence of nanohydroxyapatite surface properties on Staphylococcus epidermidis biofilm formationcitations
- 2012Optimization of nickel biosorption by chemically modified brown macroalgae (Pelvetia canaliculata)citations
- 2011In situ evaluation of a new silorane-based composite resin's bioadhesion propertiescitations
- 2010Study on the compressive behaviour of functional knitted fabrics using elastomeric materials
- 2007Comparison of simultaneous bender elements and resonant column tests on porto residual soilcitations
Places of action
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article
Optimization of nickel biosorption by chemically modified brown macroalgae (Pelvetia canaliculata)
Abstract
In the present work, various forms of algae Pelvetia canaliculata were prepared by different chemical modifications, in order to get the best form of algae for the maximum uptake of nickel. Potentiometric titration revealed that the carboxyl groups were more abundant (3.9 mmol/g) as compared to hydroxyl groups (2.0 mmol/g) on the biosorbent surface. Fourier transform infrared (FUR) analysis of algae was done to identify the role of different functional groups present on algae surface during nickel biosorption. The protonated algae showed least sorption of nickel suggesting that after acid treatment, some of the binding sites were destroyed. Among the various forms of prepared algae. Na-algae prepared directly from raw algae (without protonation) showed highest uptake of nickel. The release of sodium ions during the uptake of nickel ions has shown that the current biosorption mechanism involves ion-exchange being a stoichiometrical ratio of 2:1 between sodium and nickel ions.