Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies
Brilliant green (BG), a basic dye, is toxic to lung, eye, and skin. This study examines BG biosorption from aqueous solution using soybean milk residue (okara). A series of batch tests were conducted to explore influential factors including pH, biosorbent dose, initial BG...
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| Format: | Article |
| Language: | English |
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Japan Society on Water Environment
2023-01-01
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| Series: | Journal of Water and Environment Technology |
| Subjects: | |
| Online Access: |
https://www.jstage.jst.go.jp/article/jwet/21/1/21_22-059/_pdf
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| _version_ | 1827951003971878912 |
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| author | Hang Thi An Nguyen Thanh Tien Pham |
| author_facet | Hang Thi An Nguyen Thanh Tien Pham |
| author_sort | Hang Thi An Nguyen |
| collection | DOAJ |
| description | Brilliant green (BG), a basic dye, is toxic to lung, eye, and skin. This study examines BG biosorption from aqueous solution using soybean milk residue (okara). A series of batch tests were conducted to explore influential factors including pH, biosorbent dose, initial BG concentration, contact time, and temperature. The isotherm data were fitted with Langmuir and Freundlich models. The kinetic data of BG biosorption by okara were analyzed using pseudo-first order and pseudo-second order models. The BG removal efficiency was enhanced at a higher biosorbent dose, contact time, and temperature. Contrarily, the greater BG initial concentration resulted in a decline in BG removal efficacy. In the pH range that BG dye was stable, the highest BG removal was attained at pH 5. The maximum BG adsorption capacity of okara was 64.33 mg/g. Langmuir model (R2 = 0.98) was more appropriate than Freundlich model (R2 = 0.93) in describing isotherm data. Kinetic data was well fitted with Pseudo-second order model (R2 = 0.99). Thermodynamic results suggest the spontaneous and endothermic nature of the GB biosorption. The use of okara as a novel BG biosorbent can help not only wastewater decontamination but also recycling of okara in a green way. |
| first_indexed | 2024-04-09T13:34:55Z |
| format | Article |
| id | doaj.art-47828a9c0d994cf2bfb335c1d26001cf |
| institution | Directory Open Access Journal |
| issn | 1348-2165 |
| language | English |
| last_indexed | 2024-04-09T13:34:55Z |
| publishDate | 2023-01-01 |
| publisher | Japan Society on Water Environment |
| record_format | Article |
| series | Journal of Water and Environment Technology |
| spelling | doaj.art-47828a9c0d994cf2bfb335c1d26001cf2023-05-09T11:03:21ZengJapan Society on Water EnvironmentJournal of Water and Environment Technology1348-21652023-01-01211304010.2965/jwet.22-05910.2965/jwet.22-059Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic StudiesHang Thi An Nguyen0Thanh Tien Pham1 Master’s Program in Environmental Engineering, VNU Vietnam Japan University, Hanoi, Vietnam Master’s Program in Nanotechnology, VNU Vietnam Japan University, Hanoi, Vietnam Brilliant green (BG), a basic dye, is toxic to lung, eye, and skin. This study examines BG biosorption from aqueous solution using soybean milk residue (okara). A series of batch tests were conducted to explore influential factors including pH, biosorbent dose, initial BG concentration, contact time, and temperature. The isotherm data were fitted with Langmuir and Freundlich models. The kinetic data of BG biosorption by okara were analyzed using pseudo-first order and pseudo-second order models. The BG removal efficiency was enhanced at a higher biosorbent dose, contact time, and temperature. Contrarily, the greater BG initial concentration resulted in a decline in BG removal efficacy. In the pH range that BG dye was stable, the highest BG removal was attained at pH 5. The maximum BG adsorption capacity of okara was 64.33 mg/g. Langmuir model (R2 = 0.98) was more appropriate than Freundlich model (R2 = 0.93) in describing isotherm data. Kinetic data was well fitted with Pseudo-second order model (R2 = 0.99). Thermodynamic results suggest the spontaneous and endothermic nature of the GB biosorption. The use of okara as a novel BG biosorbent can help not only wastewater decontamination but also recycling of okara in a green way. https://www.jstage.jst.go.jp/article/jwet/21/1/21_22-059/_pdf okarabiosorptionbrilliant green dyeisothermskinetics |
| spellingShingle | Hang Thi An Nguyen Thanh Tien Pham Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies Journal of Water and Environment Technology okara biosorption brilliant green dye isotherms kinetics |
| title | Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies |
| title_full | Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies |
| title_fullStr | Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies |
| title_full_unstemmed | Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies |
| title_short | Brilliant Green Biosorption from Aqueous Solutions on Okara: Equilibrium, Kinetic and Thermodynamic Studies |
| title_sort | brilliant green biosorption from aqueous solutions on okara equilibrium kinetic and thermodynamic studies |
| topic | okara biosorption brilliant green dye isotherms kinetics |
| url |
https://www.jstage.jst.go.jp/article/jwet/21/1/21_22-059/_pdf
|
| work_keys_str_mv | AT hangthiannguyen brilliantgreenbiosorptionfromaqueoussolutionsonokaraequilibriumkineticandthermodynamicstudies AT thanhtienpham brilliantgreenbiosorptionfromaqueoussolutionsonokaraequilibriumkineticandthermodynamicstudies |