Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies
Chromium (Cr) ions, discharging from different industrial activities, especially from leather tanning industries, are becoming a major threat for the environment and human health. Therefore, elimination of chromium ions from industrial effluents should be addressed with great attention. Hence, this...
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KeAi Communications Co., Ltd.
2022-01-01
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| Series: | Environmental Chemistry and Ecotoxicology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590182622000054 |
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| author | Tasrina Rabia Choudhury M. Safiur Rahman Samia Islam Liba Aminul Islam Shamshad Begum Quraishi Bilkis Ara Begum Ahmad Ismail Mustafa Md. Nurul Amin |
| author_facet | Tasrina Rabia Choudhury M. Safiur Rahman Samia Islam Liba Aminul Islam Shamshad Begum Quraishi Bilkis Ara Begum Ahmad Ismail Mustafa Md. Nurul Amin |
| author_sort | Tasrina Rabia Choudhury |
| collection | DOAJ |
| description | Chromium (Cr) ions, discharging from different industrial activities, especially from leather tanning industries, are becoming a major threat for the environment and human health. Therefore, elimination of chromium ions from industrial effluents should be addressed with great attention. Hence, this study was conducted for evaluating the possibilities of using an agricultural waste “flax” to eliminate Cr (III) ions from aqueous solutions. In order to assess the effects of various experimental parameters (i.e., contact time, pH, adsorbent amount, initial chromium ion concentration and particle size) on Cr (III) ions adsorption process, the batch adsorption study was conducted. This study revealed that adsorption of Cr (III) ions by flax required 420 min to reach equilibrium. On the other hand, the maximum (~70%) Cr (III) ions removal was observed at pH value of 2.0. The desorption efficiency with 0.5 M KOH was found to be 90%. The Langmuir and Freundlich isotherms models were in better correlation with experimental data, according to equilibrium studies. Kinetic experiments showed that the first order kinetics with a rate constant of 0.01 min−1. Use of real wastewater sample became a great success for removing of Cr (III). This result suggests that the flax plant has the potentiality to become an effective and environmentally friendly economical adsorbent for the removal of Cr (III) ions significantly from waste water. |
| first_indexed | 2024-04-13T05:36:06Z |
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| id | doaj.art-c81d275cf7be454ab5e099706f17cba7 |
| institution | Directory Open Access Journal |
| issn | 2590-1826 |
| language | English |
| last_indexed | 2024-04-13T05:36:06Z |
| publishDate | 2022-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Environmental Chemistry and Ecotoxicology |
| spelling | doaj.art-c81d275cf7be454ab5e099706f17cba72022-12-22T03:00:18ZengKeAi Communications Co., Ltd.Environmental Chemistry and Ecotoxicology2590-18262022-01-014132139Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studiesTasrina Rabia Choudhury0M. Safiur Rahman1Samia Islam Liba2Aminul Islam3Shamshad Begum Quraishi4Bilkis Ara Begum5Ahmad Ismail Mustafa6Md. Nurul Amin7Analytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh; Corresponding author.Water Quality Research Laboratory, Chemistry Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, BangladeshMaterials Science Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, BangladeshDepartment of Petroleum and Mining Engineering, Jashore University of Science and Technology, Jashore 7408, BangladeshAnalytical Chemistry Laboratory, Chemistry Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, BangladeshWater Quality Research Laboratory, Chemistry Division, Atomic Energy Centre Dhaka, Bangladesh Atomic Energy Commission, Dhaka 1000, BangladeshDepartment of Applied Chemistry and Chemical Engineering, University of Dhaka, Bangladesh; Department of Public Health, Daffodil International University, BangladeshDepartment of Applied Chemistry and Chemical Engineering, University of Dhaka, BangladeshChromium (Cr) ions, discharging from different industrial activities, especially from leather tanning industries, are becoming a major threat for the environment and human health. Therefore, elimination of chromium ions from industrial effluents should be addressed with great attention. Hence, this study was conducted for evaluating the possibilities of using an agricultural waste “flax” to eliminate Cr (III) ions from aqueous solutions. In order to assess the effects of various experimental parameters (i.e., contact time, pH, adsorbent amount, initial chromium ion concentration and particle size) on Cr (III) ions adsorption process, the batch adsorption study was conducted. This study revealed that adsorption of Cr (III) ions by flax required 420 min to reach equilibrium. On the other hand, the maximum (~70%) Cr (III) ions removal was observed at pH value of 2.0. The desorption efficiency with 0.5 M KOH was found to be 90%. The Langmuir and Freundlich isotherms models were in better correlation with experimental data, according to equilibrium studies. Kinetic experiments showed that the first order kinetics with a rate constant of 0.01 min−1. Use of real wastewater sample became a great success for removing of Cr (III). This result suggests that the flax plant has the potentiality to become an effective and environmentally friendly economical adsorbent for the removal of Cr (III) ions significantly from waste water.http://www.sciencedirect.com/science/article/pii/S2590182622000054Tanning industryTrivalent chromiumAdsorptionFlax plantWastewater |
| spellingShingle | Tasrina Rabia Choudhury M. Safiur Rahman Samia Islam Liba Aminul Islam Shamshad Begum Quraishi Bilkis Ara Begum Ahmad Ismail Mustafa Md. Nurul Amin Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies Environmental Chemistry and Ecotoxicology Tanning industry Trivalent chromium Adsorption Flax plant Wastewater |
| title | Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies |
| title_full | Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies |
| title_fullStr | Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies |
| title_full_unstemmed | Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies |
| title_short | Adsorptive removal of chromium from aqueous solutions using flax (Linum usitatissimum): Kinetics and equilibrium studies |
| title_sort | adsorptive removal of chromium from aqueous solutions using flax linum usitatissimum kinetics and equilibrium studies |
| topic | Tanning industry Trivalent chromium Adsorption Flax plant Wastewater |
| url | http://www.sciencedirect.com/science/article/pii/S2590182622000054 |
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