Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution
In this present study, raw water lily leaves (RWL) powder was prepared and used as low cost, efficient and environmental friendly adsorbent for the removal of malachite green (MG) from aqueous solution. The adsorbent’s surface functional group, net neutral charge and morphology were analysed by FT-I...
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| Format: | Article |
| Language: | English |
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Iranian Chemical Science and Technologies Association
2022-08-01
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| Series: | Chemical Review and Letters |
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| Online Access: | https://www.chemrevlett.com/article_153239_c29b4531f980c46589f24fc4cc74fd56.pdf |
| _version_ | 1797802480447258624 |
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| author | Ayuba Muhammad Hamisu Abdulmumini |
| author_facet | Ayuba Muhammad Hamisu Abdulmumini |
| author_sort | Ayuba Muhammad |
| collection | DOAJ |
| description | In this present study, raw water lily leaves (RWL) powder was prepared and used as low cost, efficient and environmental friendly adsorbent for the removal of malachite green (MG) from aqueous solution. The adsorbent’s surface functional group, net neutral charge and morphology were analysed by FT-IR, Point of Zero charge and Scanning Electron (SEM) spectroscopic techniques which confirmed the effective adsorption of MG dyes onto the RWL adsorbent surface. Batch adsorption technique was employed under various optimized conditions including contact time, adsorbent dosage, adsorbate concentration, pH and temperature respectively with an adsorption capacity of 216.66mg/g and percentage adsorption of 99.5. The physical properties: moisture content (13.49%), ash content (9.81%), organic matter (90.19%), bulk density (0.263g/cm3), pore volume (1.66cm3), pH (5.74) of the adsorbent were obtained using standard methods. The kinetic data were best fitted by pseudo-second order in all the models tested under different operating temperatures. The adsorption isotherms were estimated, established and found to fit into Freundlich isotherm as compared to other models tested. Thermodynamics of the adsorption was found to be spontaneous and feasible with values of Gibb’s free energy (∆G) ranging between -9.481 to -9.880kJ/mol, exothermic with enthalpy (∆H) of -11.75kJ/mol and a decrease in randomness of the adsorption process during the transfer of molecules between the adsorbent and adsorbates with entropy (∆S) of -6.33kJ/mol. This study confirmed that RWL could be employed as a low cost and environmental friendly adsorbent for the removal of toxic dyes such as Malachite Green from aqueous solution |
| first_indexed | 2024-03-13T05:06:17Z |
| format | Article |
| id | doaj.art-dd4fb774b77b4c98969e918b3cd59912 |
| institution | Directory Open Access Journal |
| issn | 2676-7279 2645-4947 |
| language | English |
| last_indexed | 2024-03-13T05:06:17Z |
| publishDate | 2022-08-01 |
| publisher | Iranian Chemical Science and Technologies Association |
| record_format | Article |
| series | Chemical Review and Letters |
| spelling | doaj.art-dd4fb774b77b4c98969e918b3cd599122023-06-16T12:45:16ZengIranian Chemical Science and Technologies AssociationChemical Review and Letters2676-72792645-49472022-08-015425026010.22034/crl.2022.337901.1162153239Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solutionAyuba Muhammad0Hamisu Abdulmumini1Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, Bayero University, Knao, NigeriaDepartment of Science Laboratory Technology, School of Science and Technology, Abubakar Tatari Ali Polytechnic, PMB 0094, Bauchi-NigeriaIn this present study, raw water lily leaves (RWL) powder was prepared and used as low cost, efficient and environmental friendly adsorbent for the removal of malachite green (MG) from aqueous solution. The adsorbent’s surface functional group, net neutral charge and morphology were analysed by FT-IR, Point of Zero charge and Scanning Electron (SEM) spectroscopic techniques which confirmed the effective adsorption of MG dyes onto the RWL adsorbent surface. Batch adsorption technique was employed under various optimized conditions including contact time, adsorbent dosage, adsorbate concentration, pH and temperature respectively with an adsorption capacity of 216.66mg/g and percentage adsorption of 99.5. The physical properties: moisture content (13.49%), ash content (9.81%), organic matter (90.19%), bulk density (0.263g/cm3), pore volume (1.66cm3), pH (5.74) of the adsorbent were obtained using standard methods. The kinetic data were best fitted by pseudo-second order in all the models tested under different operating temperatures. The adsorption isotherms were estimated, established and found to fit into Freundlich isotherm as compared to other models tested. Thermodynamics of the adsorption was found to be spontaneous and feasible with values of Gibb’s free energy (∆G) ranging between -9.481 to -9.880kJ/mol, exothermic with enthalpy (∆H) of -11.75kJ/mol and a decrease in randomness of the adsorption process during the transfer of molecules between the adsorbent and adsorbates with entropy (∆S) of -6.33kJ/mol. This study confirmed that RWL could be employed as a low cost and environmental friendly adsorbent for the removal of toxic dyes such as Malachite Green from aqueous solutionhttps://www.chemrevlett.com/article_153239_c29b4531f980c46589f24fc4cc74fd56.pdfraw water lily leavesmalachite green dyeadsorptionthermodynamicskinetics |
| spellingShingle | Ayuba Muhammad Hamisu Abdulmumini Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution Chemical Review and Letters raw water lily leaves malachite green dye adsorption thermodynamics kinetics |
| title | Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| title_full | Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| title_fullStr | Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| title_full_unstemmed | Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| title_short | Raw water lily (nymphaea lotus) leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| title_sort | raw water lily nymphaea lotus leaves powder as an effective adsorbent for the adsorption of malachite green dye from aqueous solution |
| topic | raw water lily leaves malachite green dye adsorption thermodynamics kinetics |
| url | https://www.chemrevlett.com/article_153239_c29b4531f980c46589f24fc4cc74fd56.pdf |
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