Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach
<p dir="ltr">This paper aims to explore the removal of methylene blue from wastewater using fly ash-based geopolymer (FAG) modified with titanium dioxide (TiO<sub>2</sub>) <u>nanoparticles</u> referred to as FAG-TiO<sub>2</sub>. Using several analy...
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2024
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| _version_ | 1864513513467150336 |
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| author | Johaina Alahmad (19205965) |
| author2 | Amina BiBi (17679402) Mohammad A. Al-Ghouti (8882054) |
| author2_role | author author |
| author_facet | Johaina Alahmad (19205965) Amina BiBi (17679402) Mohammad A. Al-Ghouti (8882054) |
| author_role | author |
| dc.creator.none.fl_str_mv | Johaina Alahmad (19205965) Amina BiBi (17679402) Mohammad A. Al-Ghouti (8882054) |
| dc.date.none.fl_str_mv | 2024-03-11T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.gsd.2024.101138 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Application_of_TiO_sub_2_sub_-loaded_fly_ash-based_geopolymer_in_adsorption_of_methylene_blue_from_water_Waste-to-value_approach/30197176 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Environmental engineering Nanotechnology Wastewater treatment Waste-to-value approach Dye removal Geopolymer Material modification |
| dc.title.none.fl_str_mv | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This paper aims to explore the removal of methylene blue from wastewater using fly ash-based geopolymer (FAG) modified with titanium dioxide (TiO<sub>2</sub>) <u>nanoparticles</u> referred to as FAG-TiO<sub>2</sub>. Using several analytical techniques, the modified geopolymer was physically and chemically characterized. Additionally, it was investigated how pH, MB concentration, and temperature affected the MB <u>adsorption process</u> utilizing FAG-TiO<sub>2</sub>. Scanning electron microscopy images exhibited a porous morphology. Furthermore,<u> transmission electron microscopy</u> images revealed a nanostructured shape, with <u>nanoparticles</u> clumping together to form small channels suitable for MB adsorption. The stretching vibration of the <u>alumina</u> silicate was seen using the Fourier transform infrared, indicating that geopolymerization was successfully conducted. The developed FAG-TiO<sub>2</sub> showed a remarkable capacity for MB adsorption from the aqueous phase. The Langmuir isotherm model was the best-fitting adsorption model, with a maximum adsorption capacity of 103.19 mg/g at pH 6 and 35 °C. The thermodynamics investigations revealed negative values for <u>Gibbs free energy</u> (ΔGo), emphasizing the spontaneous nature of the processes. While the positive entropy (ΔSo) indicated a significant affinity between the two phases, the positive enthalpy (ΔHo) implies an endothermic reaction. Additionally, <u>hydrogen bonds</u>, n-π, and <u>electrostatic interactions</u> between MB and FAG-TiO<sub>2</sub> facilitated the adsorption process. Furthermore, desorption studies with two different chemicals were used to investigate MB retention onto FAG-TiO<sub>2</sub>. The adsorbents were desorbed using an HCl (0.5 M) reagent where the maximum MB desorption reached 41.95%. <u>Real wastewater</u> samples were also tested, and promising results were found, indicating the possible use of the prepared adsorbent in industrial applications.</p><h2>Other Information</h2><p dir="ltr">Published in: Groundwater for Sustainable Development<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.gsd.2024.101138" target="_blank">https://dx.doi.org/10.1016/j.gsd.2024.101138</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_b2e0b559953f4643f8ea37fd426452a5 |
| identifier_str_mv | 10.1016/j.gsd.2024.101138 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30197176 |
| publishDate | 2024 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approachJohaina Alahmad (19205965)Amina BiBi (17679402)Mohammad A. Al-Ghouti (8882054)EngineeringEnvironmental engineeringNanotechnologyWastewater treatmentWaste-to-value approachDye removalGeopolymerMaterial modification<p dir="ltr">This paper aims to explore the removal of methylene blue from wastewater using fly ash-based geopolymer (FAG) modified with titanium dioxide (TiO<sub>2</sub>) <u>nanoparticles</u> referred to as FAG-TiO<sub>2</sub>. Using several analytical techniques, the modified geopolymer was physically and chemically characterized. Additionally, it was investigated how pH, MB concentration, and temperature affected the MB <u>adsorption process</u> utilizing FAG-TiO<sub>2</sub>. Scanning electron microscopy images exhibited a porous morphology. Furthermore,<u> transmission electron microscopy</u> images revealed a nanostructured shape, with <u>nanoparticles</u> clumping together to form small channels suitable for MB adsorption. The stretching vibration of the <u>alumina</u> silicate was seen using the Fourier transform infrared, indicating that geopolymerization was successfully conducted. The developed FAG-TiO<sub>2</sub> showed a remarkable capacity for MB adsorption from the aqueous phase. The Langmuir isotherm model was the best-fitting adsorption model, with a maximum adsorption capacity of 103.19 mg/g at pH 6 and 35 °C. The thermodynamics investigations revealed negative values for <u>Gibbs free energy</u> (ΔGo), emphasizing the spontaneous nature of the processes. While the positive entropy (ΔSo) indicated a significant affinity between the two phases, the positive enthalpy (ΔHo) implies an endothermic reaction. Additionally, <u>hydrogen bonds</u>, n-π, and <u>electrostatic interactions</u> between MB and FAG-TiO<sub>2</sub> facilitated the adsorption process. Furthermore, desorption studies with two different chemicals were used to investigate MB retention onto FAG-TiO<sub>2</sub>. The adsorbents were desorbed using an HCl (0.5 M) reagent where the maximum MB desorption reached 41.95%. <u>Real wastewater</u> samples were also tested, and promising results were found, indicating the possible use of the prepared adsorbent in industrial applications.</p><h2>Other Information</h2><p dir="ltr">Published in: Groundwater for Sustainable Development<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.gsd.2024.101138" target="_blank">https://dx.doi.org/10.1016/j.gsd.2024.101138</a></p>2024-03-11T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.gsd.2024.101138https://figshare.com/articles/journal_contribution/Application_of_TiO_sub_2_sub_-loaded_fly_ash-based_geopolymer_in_adsorption_of_methylene_blue_from_water_Waste-to-value_approach/30197176CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/301971762024-03-11T09:00:00Z |
| spellingShingle | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach Johaina Alahmad (19205965) Engineering Environmental engineering Nanotechnology Wastewater treatment Waste-to-value approach Dye removal Geopolymer Material modification |
| status_str | publishedVersion |
| title | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| title_full | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| title_fullStr | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| title_full_unstemmed | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| title_short | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| title_sort | Application of TiO<sub>2</sub>-loaded fly ash-based geopolymer in adsorption of methylene blue from water: Waste-to-value approach |
| topic | Engineering Environmental engineering Nanotechnology Wastewater treatment Waste-to-value approach Dye removal Geopolymer Material modification |