Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach
Novel results in this study showcase the utilization of sunlight-dried, ground Lablab purpureus husk (LLPh), treated with water and alkali, as a highly efficient bio-adsorbent for the removal of cationic dyes from aqueous solutions. Methylene blue (MB), malachite green (MG), and crystal violet (CV)...
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Iranian Environmental Mutagen Society
2024-01-01
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| Series: | Journal of Water and Environmental Nanotechnology |
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| Online Access: | https://www.jwent.net/article_710767_940b2e8ddd783b51e0b9c753e828966a.pdf |
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| author | Sumathi Paramesh Veerendra Ananthpur Nagaraju Rajendraprasad |
| author_facet | Sumathi Paramesh Veerendra Ananthpur Nagaraju Rajendraprasad |
| author_sort | Sumathi Paramesh |
| collection | DOAJ |
| description | Novel results in this study showcase the utilization of sunlight-dried, ground Lablab purpureus husk (LLPh), treated with water and alkali, as a highly efficient bio-adsorbent for the removal of cationic dyes from aqueous solutions. Methylene blue (MB), malachite green (MG), and crystal violet (CV) were effectively adsorbed onto NaOH activated LLPh (NaOH-LLPh) as bio-adsorbent. Employing the Chromatrap method within a column, successfully removed these dyes, while the surface morphology of the bio-adsorbent was elucidated through scanning electron microscopy (SEM) analysis. FTIR spectrometric data revealed valuable insights into the extent of adsorption. The impact of factors including adsorbate concentration, adsorbent dose, pH, contact time, and flow rate on the adsorption process was systematically studied and optimized. Up to 1000 µg/mL of MB and MG, 50 µg/mL of CV were found to be effectively removed by adsorption at pH 4-5, 3 and 2, respectively, at the flow rate of 1 mL/min. The results of kinetic studies and adsorption isotherms of above-mentioned dyes indicates that, all the three dyes follow the pseudo-second order kinetics. The adsorption of MB and MG are well fitted with the Langmuir isotherm model. The other dye CV suits with the Freundlich isotherm model. Based on the results, NaOH-LLPh, as an inexpensive and eco-friendly adsorbent, is suitable for the removal of cationic organic dyes from aqueous samples. |
| format | Article |
| id | doaj-art-70207b1b8b56409dbe493c5a18552917 |
| institution | Kabale University |
| issn | 2476-7204 2476-6615 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Iranian Environmental Mutagen Society |
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| series | Journal of Water and Environmental Nanotechnology |
| spelling | doaj-art-70207b1b8b56409dbe493c5a185529172025-01-12T09:34:19ZengIranian Environmental Mutagen SocietyJournal of Water and Environmental Nanotechnology2476-72042476-66152024-01-0191557210.22090/jwent.2024.01.04710767Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approachSumathi Paramesh0Veerendra Ananthpur1Nagaraju Rajendraprasad2PG Department of Chemistry, JSS College of Arts, Commerce and Science, A Research Centre Recognized by University of Mysore, Mysuru-570 25, Karnataka, IndiaPG Department of Chemistry, JSS College of Arts, Commerce and Science, A Research Centre Recognized by University of Mysore, Mysuru-570 25, Karnataka, IndiaPG Department of Chemistry, JSS College of Arts, Commerce and Science, A Research Centre Recognized by University of Mysore, Mysuru-570 25, Karnataka, IndiaNovel results in this study showcase the utilization of sunlight-dried, ground Lablab purpureus husk (LLPh), treated with water and alkali, as a highly efficient bio-adsorbent for the removal of cationic dyes from aqueous solutions. Methylene blue (MB), malachite green (MG), and crystal violet (CV) were effectively adsorbed onto NaOH activated LLPh (NaOH-LLPh) as bio-adsorbent. Employing the Chromatrap method within a column, successfully removed these dyes, while the surface morphology of the bio-adsorbent was elucidated through scanning electron microscopy (SEM) analysis. FTIR spectrometric data revealed valuable insights into the extent of adsorption. The impact of factors including adsorbate concentration, adsorbent dose, pH, contact time, and flow rate on the adsorption process was systematically studied and optimized. Up to 1000 µg/mL of MB and MG, 50 µg/mL of CV were found to be effectively removed by adsorption at pH 4-5, 3 and 2, respectively, at the flow rate of 1 mL/min. The results of kinetic studies and adsorption isotherms of above-mentioned dyes indicates that, all the three dyes follow the pseudo-second order kinetics. The adsorption of MB and MG are well fitted with the Langmuir isotherm model. The other dye CV suits with the Freundlich isotherm model. Based on the results, NaOH-LLPh, as an inexpensive and eco-friendly adsorbent, is suitable for the removal of cationic organic dyes from aqueous samples.https://www.jwent.net/article_710767_940b2e8ddd783b51e0b9c753e828966a.pdfchromatrapmethylene bluemalachite greencrystal violetscanning electron microscope |
| spellingShingle | Sumathi Paramesh Veerendra Ananthpur Nagaraju Rajendraprasad Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach Journal of Water and Environmental Nanotechnology chromatrap methylene blue malachite green crystal violet scanning electron microscope |
| title | Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach |
| title_full | Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach |
| title_fullStr | Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach |
| title_full_unstemmed | Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach |
| title_short | Natural biodegradable low-cost Lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water: Waste to wealth and column elution approach |
| title_sort | natural biodegradable low cost lablab purpureus husk as chromatrap for removal of three hazardous organic cationic dyes from water waste to wealth and column elution approach |
| topic | chromatrap methylene blue malachite green crystal violet scanning electron microscope |
| url | https://www.jwent.net/article_710767_940b2e8ddd783b51e0b9c753e828966a.pdf |
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