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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, Afp
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Study of methane upgrading using an activated carbon 3D-printed adsorbentcitations
- 2024Separation of the heme protein cytochrome C using a 3D structured graphene oxide bionanocomposite as an adsorbentcitations
- 2022Wastewater treatment using recyclable agar-graphene oxide biocomposite hydrogel in batch and fixed-bed adsorption column: Bench experiments and modeling for the selective removal of organicscitations
- 2020Adsorption of anionic and cationic dyes into shaped MCM-41citations
- 2019Adsorption equilibrium and kinetics of carbon dioxide, methane and nitrogen on binderless zeolite 4A adsorbentscitations
- 2018New hybrid composite honeycomb monolith with 13X zeolite and activated carbon for CO2 capturecitations
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article
Wastewater treatment using recyclable agar-graphene oxide biocomposite hydrogel in batch and fixed-bed adsorption column: Bench experiments and modeling for the selective removal of organics
Abstract
Hydrogel biocomposite using graphene oxide and agar biopolymer (agar-GO) was synthesized to treat textile wastewater through fixed-bed adsorption. After characterization, batch experiments were conducted to evaluate the pH effect in the adsorption process, adsorption isotherms, and kinetics for four cationic dyes - Nile Blue A (NB), Methylene Blue (MB), Malachite Green (MG) and Basic Fuchsin (BF). Adsorption equilibrium isotherms were fitted to Freundlich, Langmuir and Sips models, and kinetic data were adjusted to Driving Force models, and Fickian Diffusion equation. Fixed-bed experiments were carried out, and the adsorption capacities on a dry basis were 226.46 mg center dot g & xe213; 1 (NB), 79.51 mg center dot g & xe213; 1 (MB), 58.25 mg center dot g & xe213; 1 (MG), 38.11 mg center dot g & xe213; 1 (BF). LDF model was fitted with the experimental breakthrough curves. The column packed with the agar-GO hydrogel was tested for the treatment of synthetic textile wastewater. Color and total organic carbon (TOC) were evaluated and there was an indication of the adsorbent selectivity for the separation of the dyes, which can facilitate dye recovery. Agar-GO proved to be a viable and ecofriendly alternative, since a small amount of material was used to treat over 6 L of wastewater, being most of the composite biodegradable. Moreover, the material exhibited remarkable regenerative capacity, proving its effectiveness for applications in industrial textile wastewater treatment.