Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder
This study includes the characterization and exploitation of an abundant agricultural waste in Algeria, Alfa (<i>Stipa tenacissima</i> L.) leaf powder (ALP) as a biosorbent for the removal of hazardous triphenylmethane dyes, malachite green (basic green 4) and crystal violet (basic viole...
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MDPI AG
2023-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/8/3313 |
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| author | Lamia Ouettar El-Khamssa Guechi Oualid Hamdaoui Nadia Fertikh Fethi Saoudi Abudulaziz Alghyamah |
| author_facet | Lamia Ouettar El-Khamssa Guechi Oualid Hamdaoui Nadia Fertikh Fethi Saoudi Abudulaziz Alghyamah |
| author_sort | Lamia Ouettar |
| collection | DOAJ |
| description | This study includes the characterization and exploitation of an abundant agricultural waste in Algeria, Alfa (<i>Stipa tenacissima</i> L.) leaf powder (ALP) as a biosorbent for the removal of hazardous triphenylmethane dyes, malachite green (basic green 4) and crystal violet (basic violet 3), from aqueous media under various operating conditions in batch mode. The effect of experimental parameters such as initial dye concentration (10–40 mg/L), contact time (0–300 min), biosorbent dose (2.5–5.5 g/L), initial pH (2–8), temperature (298–328 K), and ionic strength on dye sorption was investigated. The results of both dyes show that the increase in initial concentration, contact time, temperature, and initial pH of solution leads to an increase in biosorbed quantity, unlike the effect of ionic strength. The biosorption kinetics for triphenylmethane dyes on ALP was analyzed by pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models proposed by the Weber–Morris equation. Equilibrium sorption data were analyzed by six isotherms, namely the Langmuir, Freundlich, Harkins–Jura, Flory–Huggins, Elovich, and Kiselev isotherms. The thermodynamic parameters were evaluated for both dyes. The thermodynamic results suggest that both dyes’ biosorption is a typical physical process, spontaneous and endothermic in nature. |
| first_indexed | 2024-03-11T04:42:24Z |
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| id | doaj.art-4088c0745c6845e4a338e7099426c367 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T04:42:24Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-4088c0745c6845e4a338e7099426c3672023-11-17T20:37:11ZengMDPI AGMolecules1420-30492023-04-01288331310.3390/molecules28083313Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf PowderLamia Ouettar0El-Khamssa Guechi1Oualid Hamdaoui2Nadia Fertikh3Fethi Saoudi4Abudulaziz Alghyamah5Laboratory of Organic Synthesis Modeling and Optimization of Chemicals, Department of Process Engineering, Faculty of Technology, Badji Mokhtar–Annaba University, P.O. Box 12, Annaba 23000, AlgeriaDepartment of Process Engineering, Faculty of Technology, Badji Mokhtar–Annaba University, P.O. Box 12, Annaba 23000, AlgeriaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaLaboratory of Organic Synthesis Modeling and Optimization of Chemicals, Department of Process Engineering, Faculty of Technology, Badji Mokhtar–Annaba University, P.O. Box 12, Annaba 23000, AlgeriaDepartment of Process Engineering, Faculty of Technology, Badji Mokhtar–Annaba University, P.O. Box 12, Annaba 23000, AlgeriaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaThis study includes the characterization and exploitation of an abundant agricultural waste in Algeria, Alfa (<i>Stipa tenacissima</i> L.) leaf powder (ALP) as a biosorbent for the removal of hazardous triphenylmethane dyes, malachite green (basic green 4) and crystal violet (basic violet 3), from aqueous media under various operating conditions in batch mode. The effect of experimental parameters such as initial dye concentration (10–40 mg/L), contact time (0–300 min), biosorbent dose (2.5–5.5 g/L), initial pH (2–8), temperature (298–328 K), and ionic strength on dye sorption was investigated. The results of both dyes show that the increase in initial concentration, contact time, temperature, and initial pH of solution leads to an increase in biosorbed quantity, unlike the effect of ionic strength. The biosorption kinetics for triphenylmethane dyes on ALP was analyzed by pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models proposed by the Weber–Morris equation. Equilibrium sorption data were analyzed by six isotherms, namely the Langmuir, Freundlich, Harkins–Jura, Flory–Huggins, Elovich, and Kiselev isotherms. The thermodynamic parameters were evaluated for both dyes. The thermodynamic results suggest that both dyes’ biosorption is a typical physical process, spontaneous and endothermic in nature.https://www.mdpi.com/1420-3049/28/8/3313biosorptiontriphenylmethane dyesAlfa leaf powderkineticsisothermmodeling |
| spellingShingle | Lamia Ouettar El-Khamssa Guechi Oualid Hamdaoui Nadia Fertikh Fethi Saoudi Abudulaziz Alghyamah Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder Molecules biosorption triphenylmethane dyes Alfa leaf powder kinetics isotherm modeling |
| title | Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder |
| title_full | Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder |
| title_fullStr | Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder |
| title_full_unstemmed | Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder |
| title_short | Biosorption of Triphenyl Methane Dyes (Malachite Green and Crystal Violet) from Aqueous Media by Alfa (<i>Stipa tenacissima</i> L.) Leaf Powder |
| title_sort | biosorption of triphenyl methane dyes malachite green and crystal violet from aqueous media by alfa i stipa tenacissima i l leaf powder |
| topic | biosorption triphenylmethane dyes Alfa leaf powder kinetics isotherm modeling |
| url | https://www.mdpi.com/1420-3049/28/8/3313 |
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