Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions
Raw beetroot seeds (BS) and H3PO4 activated beetroot seeds (H3PO4-BS) were evaluate for their effectiveness in removing methylene blue (MB) and malachite green (MG) from aqueous solution. BS were carbonized at 500°C for 2 h, and then impregnated with phosphoric acid (phosphoric acid to BS ratio of 1...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2018-12-01
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| Series: | Journal of Water Reuse and Desalination |
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| Online Access: | http://jwrd.iwaponline.com/content/8/4/522 |
| _version_ | 1818543537710432256 |
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| author | A. Machrouhi M. Farnane A. Elhalil R. Elmoubarki M. Abdennouri S. Qourzal H. Tounsadi N. Barka |
| author_facet | A. Machrouhi M. Farnane A. Elhalil R. Elmoubarki M. Abdennouri S. Qourzal H. Tounsadi N. Barka |
| author_sort | A. Machrouhi |
| collection | DOAJ |
| description | Raw beetroot seeds (BS) and H3PO4 activated beetroot seeds (H3PO4-BS) were evaluate for their effectiveness in removing methylene blue (MB) and malachite green (MG) from aqueous solution. BS were carbonized at 500°C for 2 h, and then impregnated with phosphoric acid (phosphoric acid to BS ratio of 1.5 g/g). The impregnated BS were activated in a tubular vertical furnace at 450°C for 2 h. Batch sorption experiments were carried out under various parameters, such as solution pH, adsorbent dosage, contact time, initial dyes concentration and temperature. The experimental results show that the dye sorption was influenced by solution pH and it was greater in the basic range. The sorption yield increases with an increase in the adsorbent dosage. The equilibrium uptake was increased with an increase in the initial dye concentration in solution. Adsorption kinetic data conformed more to the pseudo-second-order kinetic model. The experimental isotherm data were evaluated by Langmuir, Freundlich, Toth and Dubinin–Radushkevich isotherm models. The Langmuir maximum monolayer adsorption capacities were 61.11 and 74.37 mg/g for MB, 51.31 and 213.01 mg/g for MG, respectively in the case of BS and H3PO4-BS. The thermodynamic parameters are also evaluated and discussed. |
| first_indexed | 2024-12-11T22:36:42Z |
| format | Article |
| id | doaj.art-20b9ed59953545518069a8aabe53c69d |
| institution | Directory Open Access Journal |
| issn | 2220-1319 2408-9370 |
| language | English |
| last_indexed | 2024-12-11T22:36:42Z |
| publishDate | 2018-12-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water Reuse and Desalination |
| spelling | doaj.art-20b9ed59953545518069a8aabe53c69d2022-12-22T00:47:56ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702018-12-018452253110.2166/wrd.2017.034034Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutionsA. Machrouhi0M. Farnane1A. Elhalil2R. Elmoubarki3M. Abdennouri4S. Qourzal5H. Tounsadi6N. Barka7 Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Equipe de Catalyse et Environnement, Département de Chimie, Faculté des Sciences, Université Ibn Zohr, B.P.8106 Cité Dakhla, Agadir, Morocco Faculté des Sciences Dhar El Mahraz, Université Sidi Mohamed Ben Abdellah, Fès, Morocco Laboratoire des Sciences des Matériaux, des Milieux et de la Modélisation (LS3M), FPK, Univ Hassan 1, B.P. 145, Khouribga 25000, Morocco Raw beetroot seeds (BS) and H3PO4 activated beetroot seeds (H3PO4-BS) were evaluate for their effectiveness in removing methylene blue (MB) and malachite green (MG) from aqueous solution. BS were carbonized at 500°C for 2 h, and then impregnated with phosphoric acid (phosphoric acid to BS ratio of 1.5 g/g). The impregnated BS were activated in a tubular vertical furnace at 450°C for 2 h. Batch sorption experiments were carried out under various parameters, such as solution pH, adsorbent dosage, contact time, initial dyes concentration and temperature. The experimental results show that the dye sorption was influenced by solution pH and it was greater in the basic range. The sorption yield increases with an increase in the adsorbent dosage. The equilibrium uptake was increased with an increase in the initial dye concentration in solution. Adsorption kinetic data conformed more to the pseudo-second-order kinetic model. The experimental isotherm data were evaluated by Langmuir, Freundlich, Toth and Dubinin–Radushkevich isotherm models. The Langmuir maximum monolayer adsorption capacities were 61.11 and 74.37 mg/g for MB, 51.31 and 213.01 mg/g for MG, respectively in the case of BS and H3PO4-BS. The thermodynamic parameters are also evaluated and discussed.http://jwrd.iwaponline.com/content/8/4/522activated beetroot seedsdye removalequilibriumkineticsthermodynamics |
| spellingShingle | A. Machrouhi M. Farnane A. Elhalil R. Elmoubarki M. Abdennouri S. Qourzal H. Tounsadi N. Barka Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions Journal of Water Reuse and Desalination activated beetroot seeds dye removal equilibrium kinetics thermodynamics |
| title | Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| title_full | Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| title_fullStr | Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| title_full_unstemmed | Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| title_short | Effectiveness of beetroot seeds and H3PO4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| title_sort | effectiveness of beetroot seeds and h3po4 activated beetroot seeds for the removal of dyes from aqueous solutions |
| topic | activated beetroot seeds dye removal equilibrium kinetics thermodynamics |
| url | http://jwrd.iwaponline.com/content/8/4/522 |
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