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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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Wong, Syie Luing
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Torrefaction of oil palm empty fruit bunch pelletscitations
- 2022Removal of aspirin from aqueous solution using phosphoric acid modified coffee waste adsorbentcitations
- 2022Carbon dioxide torrefaction of oil palm empty fruit bunches pelletscitations
- 2021Non-oxidative thermal decomposition of oil palm empty fruit bunch pelletscitations
- 2019Kinetics, thermodynamics, isotherm and regeneration analysis of chitosan modified pandan adsorbentcitations
- 2018Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanatecitations
- 2017Synthesis, characterization and application of textile sludge biochars for oil removalcitations
- 2016Enhanced mechanical and thermal properties of hybrid graphene nanoplatelets/multiwall carbon nanotubes reinforced polyethylene terephthalate nanocompositescitations
- 2014Influence of exfoliated graphite nanoplatelets on the flammability and thermal properties of polyethylene terephthalate/polypropylene nanocompositescitations
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article
Removal of aspirin from aqueous solution using phosphoric acid modified coffee waste adsorbent
Abstract
<p>Removal of pharmaceutical waste, aspirin (ASA) in an aqueous solution was investigated using activated carbon derived from coffee waste (CW). Activated carbon was prepared by using phosphoric acid as a chemical activating agent. Fourier Transform Infrared Spectroscopy (FTIR) was used to characterize the functional groups on the surface of the adsorbents. The BET technique measured the surface area of the adsorbent. The activated carbon derived from coffee waste modified by H<sub>3</sub>PO<sub>4</sub> (AC-HCW) was observed to have a larger surface area than AC-CW. The states of the adsorption operations are controlled by the effect of initial ASA concentration, adsorbent dose, contact time, temperature, and pH adjacent to the adsorption procedure. In the batch adsorption test, the highest removal efficiency found was 98.02% in 30 min and 95% in 60 min when used AC-HCW and AC-CW, respectively. The optimum conditions for removing aspirin from aqueous solution were 1000 mg/L of initial concentration ASA, pH 4 and a temperature of 30 °C and 0.5 g of AC-HCW and 0.6 g AC-CW adsorbents. The experimental data for adsorption of aspirin were well fitted into the Langmuir isotherm model and obeyed the pseudo-second-order kinetics model. The adsorption of aspirin onto AC-HCW and AC-CW was exothermic, with enthalpy change ΔH°= −0.182 kJ/mol and −0.216 kJ/mol, ΔS° was 0.072 J/mol −0.004 J/mol, which indicates a decrease in randomness at the adsorbent surface/aspirin solution interface, respectively. In addition, a negative Gibbs free energy ΔG° was obtained, indicating the feasibility and spontaneity of the adsorption process. For this study, the coffee waste modified by H<sub>3</sub>PO<sub>4</sub> is considered a promising adsorbent, and It could be employed as a low-cost alternative to commercial activated carbon in removing aspirin in aqueous solutions.</p>