Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies
This work was aimed to establish the equilibrium and kinetics of methyl violet removal onto crayfish shell biochars. The biochars were prepared through pyrolysis at 500, 650 and 800 ℃℃ for 1.5 h. The biochars were labelled as CS500, CS650 and CS800, respectively. All biochars are highly mesoporous w...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/43746/ http://umpir.ump.edu.my/id/eprint/43746/1/Crayfish%20shell%20biochar%20for%20methyl%20violet%20adsorption.pdf |
| _version_ | 1848826949715099648 |
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| author | Azrul Nurfaiz, Mohd Faizal Chew, Hui Wen Nicky Rahmana, Putra Ahmad Syahmi, Zaini Agi, Augustine Aja Abu Hassan, Nordin Muhammad Abbas, Ahmad Zaini |
| author_facet | Azrul Nurfaiz, Mohd Faizal Chew, Hui Wen Nicky Rahmana, Putra Ahmad Syahmi, Zaini Agi, Augustine Aja Abu Hassan, Nordin Muhammad Abbas, Ahmad Zaini |
| author_sort | Azrul Nurfaiz, Mohd Faizal |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | This work was aimed to establish the equilibrium and kinetics of methyl violet removal onto crayfish shell biochars. The biochars were prepared through pyrolysis at 500, 650 and 800 ℃℃ for 1.5 h. The biochars were labelled as CS500, CS650 and CS800, respectively. All biochars are highly mesoporous with CS650 exhibits a higher surface area of 665 m2/g. The adsorption results are tied up with the physiochemical properties of biochars. The CS800 displays the maximum dye capacity at 1079 mg/g. The performance of biochars is given in the order of, CS800 > CS650 > CS500. The equilibrium of methyl violet adsorption was best described by modified Langmuir isotherm, while the kinetic data obeyed pseudo-second-order model. The removal of methyl violet is governed partly by precipitation onto crayfish shell biochars. To conclude, the crayfish shell is a potential feedstock of biochar for dye wastewater treatment. |
| first_indexed | 2025-11-15T03:52:57Z |
| format | Article |
| id | ump-43746 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:52:57Z |
| publishDate | 2025 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-437462025-02-06T04:22:01Z http://umpir.ump.edu.my/id/eprint/43746/ Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies Azrul Nurfaiz, Mohd Faizal Chew, Hui Wen Nicky Rahmana, Putra Ahmad Syahmi, Zaini Agi, Augustine Aja Abu Hassan, Nordin Muhammad Abbas, Ahmad Zaini QD Chemistry TP Chemical technology This work was aimed to establish the equilibrium and kinetics of methyl violet removal onto crayfish shell biochars. The biochars were prepared through pyrolysis at 500, 650 and 800 ℃℃ for 1.5 h. The biochars were labelled as CS500, CS650 and CS800, respectively. All biochars are highly mesoporous with CS650 exhibits a higher surface area of 665 m2/g. The adsorption results are tied up with the physiochemical properties of biochars. The CS800 displays the maximum dye capacity at 1079 mg/g. The performance of biochars is given in the order of, CS800 > CS650 > CS500. The equilibrium of methyl violet adsorption was best described by modified Langmuir isotherm, while the kinetic data obeyed pseudo-second-order model. The removal of methyl violet is governed partly by precipitation onto crayfish shell biochars. To conclude, the crayfish shell is a potential feedstock of biochar for dye wastewater treatment. Elsevier Ltd 2025 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/43746/1/Crayfish%20shell%20biochar%20for%20methyl%20violet%20adsorption.pdf Azrul Nurfaiz, Mohd Faizal and Chew, Hui Wen and Nicky Rahmana, Putra and Ahmad Syahmi, Zaini and Agi, Augustine Aja and Abu Hassan, Nordin and Muhammad Abbas, Ahmad Zaini (2025) Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies. Next Sustainability, 6 (100093). pp. 1-10. ISSN 2949-8236. (Published) https://doi.org/10.1016/j.nxsust.2024.100093 https://doi.org/10.1016/j.nxsust.2024.100093 |
| spellingShingle | QD Chemistry TP Chemical technology Azrul Nurfaiz, Mohd Faizal Chew, Hui Wen Nicky Rahmana, Putra Ahmad Syahmi, Zaini Agi, Augustine Aja Abu Hassan, Nordin Muhammad Abbas, Ahmad Zaini Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title | Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title_full | Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title_fullStr | Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title_full_unstemmed | Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title_short | Crayfish shell biochar for methyl violet adsorption: Equilibrium and kinetic studies |
| title_sort | crayfish shell biochar for methyl violet adsorption: equilibrium and kinetic studies |
| topic | QD Chemistry TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/43746/ http://umpir.ump.edu.my/id/eprint/43746/ http://umpir.ump.edu.my/id/eprint/43746/ http://umpir.ump.edu.my/id/eprint/43746/1/Crayfish%20shell%20biochar%20for%20methyl%20violet%20adsorption.pdf |