Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes
Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-03-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/83/6/1384 |
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| author | Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni |
| author_facet | Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni |
| author_sort | Khawla Ben Jeddou |
| collection | DOAJ |
| description | Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by scanning using electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR). Then the adsorption behavior was studied in a batch system. The adsorption process is affected by various parameters such as the solution pH (2–11), the initial concentration of the dye (20, 50, 100, 150 and 200 mg L−1), the adsorbent dose (0.1–3%), the temperature (303.16 K, 313.16 K, and 323.16 K), agitation (up to 250 rpm), as well as the contact time. Adsorption isotherms of the studied dye on the adsorbent were determined and compared with the Langmiur, Freundlich and Temkin adsorption models. The results show that the data was most similar to the Freundlich isotherm (R2 = 0.99). The maximum adsorption capacities (Qmax) of MB and DR 80 by the PP at temperatures 303.16 K, 313.16 K and 323.16 K were found to be approximately 97.08 mg g−1; 45.87 mg g−1; 61.35 mg g−1 and 27.778 mg g−1; 45.45 mg g−1; and 32.258 mg g−1. The kinetic data was compared to the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. This revealed that adsorption of methylene blue onto PP abided mostly to the pseudo-second-order kinetic model. Calculations of various thermodynamic parameters such as enthalpy change (ΔH), entropy change (ΔS), and free energy change (ΔG) display the endothermic and spontaneous nature of the adsorption process. HIGHLIGHTS
The potato peels waste (PP) was used as adsorbent for the removal of methylene blue (MB) and direct red 80 (DR 80).;
PP can efficiently adsorb high amounts of cationic and anionic dyes from water.;
The adsorption isotherm data were fitted well to Freundlich isotherm.;
The adsorption kinetics described well by the pseudo-second-order model.;
The adsorption of DR80 and MB was spontaneous and endothermic.; |
| first_indexed | 2024-12-19T19:10:14Z |
| format | Article |
| id | doaj.art-233a148891044f28a29cffe97ea70f18 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-19T19:10:14Z |
| publishDate | 2021-03-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-233a148891044f28a29cffe97ea70f182022-12-21T20:09:20ZengIWA PublishingWater Science and Technology0273-12231996-97322021-03-018361384139810.2166/wst.2021.075075Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyesKhawla Ben Jeddou0Fatma Bouaziz1Fadia Ben Taheur2Oumèma Nouri-Ellouz3Raoudha Ellouz-Ghorbel4Semia Ellouz-Chaabouni5 National School of Engineers of Sfax, Laboratory of Plant Improvement and Valorization of Agricultural Resources, P.O. Box 1173, 3038 Sfax, Tunisia National School of Engineers of Sfax, Laboratory of Plant Improvement and Valorization of Agricultural Resources, P.O. Box 1173, 3038 Sfax, Tunisia Laboratory of Analysis, Treatments and valorization of Pollutants of the Environment and Products, Faculty of Pharmacy, Monastir, Tunisia National School of Engineers of Sfax, Laboratory of Plant Improvement and Valorization of Agricultural Resources, P.O. Box 1173, 3038 Sfax, Tunisia National School of Engineers of Sfax, Laboratory of Plant Improvement and Valorization of Agricultural Resources, P.O. Box 1173, 3038 Sfax, Tunisia National School of Engineers of Sfax, Laboratory of Plant Improvement and Valorization of Agricultural Resources, P.O. Box 1173, 3038 Sfax, Tunisia Adsorption of direct red 80 (DR 80) and methylene blue (MB) from aqueous solutions on potato peels (PP) has been compared. The use of peels in decontamination technology is very promising given the near zero-cost for the synthesis of those adsorbents. The selected potato peels were first analyzed by scanning using electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR). Then the adsorption behavior was studied in a batch system. The adsorption process is affected by various parameters such as the solution pH (2–11), the initial concentration of the dye (20, 50, 100, 150 and 200 mg L−1), the adsorbent dose (0.1–3%), the temperature (303.16 K, 313.16 K, and 323.16 K), agitation (up to 250 rpm), as well as the contact time. Adsorption isotherms of the studied dye on the adsorbent were determined and compared with the Langmiur, Freundlich and Temkin adsorption models. The results show that the data was most similar to the Freundlich isotherm (R2 = 0.99). The maximum adsorption capacities (Qmax) of MB and DR 80 by the PP at temperatures 303.16 K, 313.16 K and 323.16 K were found to be approximately 97.08 mg g−1; 45.87 mg g−1; 61.35 mg g−1 and 27.778 mg g−1; 45.45 mg g−1; and 32.258 mg g−1. The kinetic data was compared to the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. This revealed that adsorption of methylene blue onto PP abided mostly to the pseudo-second-order kinetic model. Calculations of various thermodynamic parameters such as enthalpy change (ΔH), entropy change (ΔS), and free energy change (ΔG) display the endothermic and spontaneous nature of the adsorption process. HIGHLIGHTS The potato peels waste (PP) was used as adsorbent for the removal of methylene blue (MB) and direct red 80 (DR 80).; PP can efficiently adsorb high amounts of cationic and anionic dyes from water.; The adsorption isotherm data were fitted well to Freundlich isotherm.; The adsorption kinetics described well by the pseudo-second-order model.; The adsorption of DR80 and MB was spontaneous and endothermic.;http://wst.iwaponline.com/content/83/6/1384adsorption isothermdye adsorptionpotato wastewater treatment |
| spellingShingle | Khawla Ben Jeddou Fatma Bouaziz Fadia Ben Taheur Oumèma Nouri-Ellouz Raoudha Ellouz-Ghorbel Semia Ellouz-Chaabouni Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes Water Science and Technology adsorption isotherm dye adsorption potato waste water treatment |
| title | Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes |
| title_full | Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes |
| title_fullStr | Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes |
| title_full_unstemmed | Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes |
| title_short | Adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels: a comparison of anionic and cationic dyes |
| title_sort | adsorptive removal of direct red 80 and methylene blue from aqueous solution by potato peels a comparison of anionic and cationic dyes |
| topic | adsorption isotherm dye adsorption potato waste water treatment |
| url | http://wst.iwaponline.com/content/83/6/1384 |
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