Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water
Excessive growth and abnormal use of dyes and water in the textile industry cause serious environmental problems, especially with excessive pollution of water bodies. Adsorption is an attractive, feasible, low-cost, highly efficient and sustainable technique in terms of green chemistry for the remov...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-06-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2023.1156577/full |
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| author | Ahmet Gürses Kübra Güneş Elif Şahin Metin Açıkyıldız |
| author_facet | Ahmet Gürses Kübra Güneş Elif Şahin Metin Açıkyıldız |
| author_sort | Ahmet Gürses |
| collection | DOAJ |
| description | Excessive growth and abnormal use of dyes and water in the textile industry cause serious environmental problems, especially with excessive pollution of water bodies. Adsorption is an attractive, feasible, low-cost, highly efficient and sustainable technique in terms of green chemistry for the removal of pollutants from water. This study aims to investigate the removal kinetics, thermodynamics and adsorption mechanism of Remazol Red RB, which was chosen as a representative anionic reactive dye, from synthetic wastewater using powdered pumice, taking into account various experimental parameters such as initial dye concentration, adsorption time, temperature and pH. Moreover, to support the proposed adsorption mechanism, before and after adsorption of the samples, the Fourier transform infrared spectrophotometer (FTIR) spectra, X-ray powder diffraction (XRD) diffractograms and High resolution transmission electron microscopy (HRTEM) images were also taken and used. The results show that powder pumice can be an efficient adsorbent for anionic dye removal with a relatively high adsorption capacity of 38.90 mg/g, and it is very effective in 30–60 min in mild conditions. The experimental data showed a high agreement with the pseudo-second-order kinetic model and the Freundlich adsorption isotherm equation. In addition, thermodynamically, the process exhibited exothermic nature and standard isosteric enthalpy and entropy changes of −4.93 kJ/mol and 16.11 J/mol. K were calculated. It was determined that the adsorption mechanism was predominantly based on T-shaped pi-pi interactions and had physical characteristics. |
| first_indexed | 2024-03-13T07:56:05Z |
| format | Article |
| id | doaj.art-55ce026d05f84680955c6dc0d29fb6b5 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-03-13T07:56:05Z |
| publishDate | 2023-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-55ce026d05f84680955c6dc0d29fb6b52023-06-02T05:10:13ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462023-06-011110.3389/fchem.2023.11565771156577Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste waterAhmet Gürses0Kübra Güneş1Elif Şahin2Metin Açıkyıldız3Department of Chemistry, K.K. Education Faculty, Atatürk University, Erzurum, TürkiyeDepartment of Chemistry, K.K. Education Faculty, Atatürk University, Erzurum, TürkiyeDepartment of Chemistry, K.K. Education Faculty, Atatürk University, Erzurum, TürkiyeDepartment of Science Education, K.M.R. Education Faculty, Kilis 7 Aralık University, Kilis, TürkiyeExcessive growth and abnormal use of dyes and water in the textile industry cause serious environmental problems, especially with excessive pollution of water bodies. Adsorption is an attractive, feasible, low-cost, highly efficient and sustainable technique in terms of green chemistry for the removal of pollutants from water. This study aims to investigate the removal kinetics, thermodynamics and adsorption mechanism of Remazol Red RB, which was chosen as a representative anionic reactive dye, from synthetic wastewater using powdered pumice, taking into account various experimental parameters such as initial dye concentration, adsorption time, temperature and pH. Moreover, to support the proposed adsorption mechanism, before and after adsorption of the samples, the Fourier transform infrared spectrophotometer (FTIR) spectra, X-ray powder diffraction (XRD) diffractograms and High resolution transmission electron microscopy (HRTEM) images were also taken and used. The results show that powder pumice can be an efficient adsorbent for anionic dye removal with a relatively high adsorption capacity of 38.90 mg/g, and it is very effective in 30–60 min in mild conditions. The experimental data showed a high agreement with the pseudo-second-order kinetic model and the Freundlich adsorption isotherm equation. In addition, thermodynamically, the process exhibited exothermic nature and standard isosteric enthalpy and entropy changes of −4.93 kJ/mol and 16.11 J/mol. K were calculated. It was determined that the adsorption mechanism was predominantly based on T-shaped pi-pi interactions and had physical characteristics.https://www.frontiersin.org/articles/10.3389/fchem.2023.1156577/fulladsorptionpumiceRemazol Red RBpi-pi interactionsadsorption mechanismdye removal |
| spellingShingle | Ahmet Gürses Kübra Güneş Elif Şahin Metin Açıkyıldız Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water Frontiers in Chemistry adsorption pumice Remazol Red RB pi-pi interactions adsorption mechanism dye removal |
| title | Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water |
| title_full | Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water |
| title_fullStr | Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water |
| title_full_unstemmed | Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water |
| title_short | Investigation of the removal kinetics, thermodynamics and adsorption mechanism of anionic textile dye, Remazol Red RB, with powder pumice, a sustainable adsorbent from waste water |
| title_sort | investigation of the removal kinetics thermodynamics and adsorption mechanism of anionic textile dye remazol red rb with powder pumice a sustainable adsorbent from waste water |
| topic | adsorption pumice Remazol Red RB pi-pi interactions adsorption mechanism dye removal |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2023.1156577/full |
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