Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics
Methylene blue is a synthetic dye that widely used in various industries. However, its presence in wastewater negatively affects the environment, human health, and aquatic life. Adsorption is recognized as an effective and economical method for removing methylene blue from wastewater. Calcium-based...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | South African Journal of Chemical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1026918525000113 |
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| author | Erni Misran Wahyu Pratama Kanzi Insan Kasyidi Napitupulu Muhammad Dani Supardan Dewi Agustina Iryani Viqry Pramananda |
| author_facet | Erni Misran Wahyu Pratama Kanzi Insan Kasyidi Napitupulu Muhammad Dani Supardan Dewi Agustina Iryani Viqry Pramananda |
| author_sort | Erni Misran |
| collection | DOAJ |
| description | Methylene blue is a synthetic dye that widely used in various industries. However, its presence in wastewater negatively affects the environment, human health, and aquatic life. Adsorption is recognized as an effective and economical method for removing methylene blue from wastewater. Calcium-based adsorbents such as shrimp shell waste can be used for this purpose. Furthermore, the adsorption process can be intensified using ultrasonic waves. This study aimed to prepare, characterize, and apply shrimp shell-based adsorbents for ultrasonic-assisted methylene blue adsorption. Adsorbents were prepared using three different methods (coded by A1, A2, and A3) to study their effects on the characteristics and performance of methylene blue adsorption. The adsorption process was also performed by varying the solution pH, adsorbent mass, adsorption time, adsorption temperature, and initial methylene blue concentration. The results indicated that the preparation method significantly influenced the characteristics of each adsorbent, as validated by Scanning Electron Microscope-Energy Dispersive X-Ray Spectroscopy, Fourier Transform InfraRed, Particle Size Analyzer, and Surface Area Analyzer. Under optimal conditions, A2 and A3 exhibited the highest methylene blue removal rates, reaching 99.771 % and 99,820 %, respectively. The adsorption isotherm study shows that methylene blue adsorption onto A1 follows the Freundlich model, whereas onto A2 and A3 followed the Langmuir model. The adsorption kinetics study revealed that the experimental data for all three adsorbents conformed well to the Pseudo-Second Order model, with R2 values ranging from 0.99998 to 1.0000. Finally, the thermodynamic assessment demonstrated that ultrasonic-assisted MB adsorption with the three adsorbents was spontaneous, with ΔG° values of -1,542, -10,669, and -10,680 kJ/mol, ΔS° values of 62.845, 150.900, and 162.260 kJ/mol.K, and ΔH° values of 17,347, 35,088, and 38,339 kJ/mol for A1, A2, and A3, respectively. |
| format | Article |
| id | doaj-art-5454996630c64ef38c87725450b7a5a3 |
| institution | Kabale University |
| issn | 1026-9185 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | South African Journal of Chemical Engineering |
| spelling | doaj-art-5454996630c64ef38c87725450b7a5a32025-02-04T04:10:19ZengElsevierSouth African Journal of Chemical Engineering1026-91852025-04-0152111126Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamicsErni Misran0Wahyu Pratama1Kanzi Insan Kasyidi Napitupulu2Muhammad Dani Supardan3Dewi Agustina Iryani4Viqry Pramananda5Department of Chemical Engineering, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan 20155, Indonesia; Corresponding author.Department of Chemical Engineering, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan 20155, IndonesiaDepartment of Chemical Engineering, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan 20155, IndonesiaDepartment of Chemical Engineering, Universitas Syiah Kuala, Darussalam, Banda Aceh, 23111, IndonesiaDepartment of Chemical Engineering, University of Lampung, IndonesiaDepartment of Chemical Engineering, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan 20155, IndonesiaMethylene blue is a synthetic dye that widely used in various industries. However, its presence in wastewater negatively affects the environment, human health, and aquatic life. Adsorption is recognized as an effective and economical method for removing methylene blue from wastewater. Calcium-based adsorbents such as shrimp shell waste can be used for this purpose. Furthermore, the adsorption process can be intensified using ultrasonic waves. This study aimed to prepare, characterize, and apply shrimp shell-based adsorbents for ultrasonic-assisted methylene blue adsorption. Adsorbents were prepared using three different methods (coded by A1, A2, and A3) to study their effects on the characteristics and performance of methylene blue adsorption. The adsorption process was also performed by varying the solution pH, adsorbent mass, adsorption time, adsorption temperature, and initial methylene blue concentration. The results indicated that the preparation method significantly influenced the characteristics of each adsorbent, as validated by Scanning Electron Microscope-Energy Dispersive X-Ray Spectroscopy, Fourier Transform InfraRed, Particle Size Analyzer, and Surface Area Analyzer. Under optimal conditions, A2 and A3 exhibited the highest methylene blue removal rates, reaching 99.771 % and 99,820 %, respectively. The adsorption isotherm study shows that methylene blue adsorption onto A1 follows the Freundlich model, whereas onto A2 and A3 followed the Langmuir model. The adsorption kinetics study revealed that the experimental data for all three adsorbents conformed well to the Pseudo-Second Order model, with R2 values ranging from 0.99998 to 1.0000. Finally, the thermodynamic assessment demonstrated that ultrasonic-assisted MB adsorption with the three adsorbents was spontaneous, with ΔG° values of -1,542, -10,669, and -10,680 kJ/mol, ΔS° values of 62.845, 150.900, and 162.260 kJ/mol.K, and ΔH° values of 17,347, 35,088, and 38,339 kJ/mol for A1, A2, and A3, respectively.http://www.sciencedirect.com/science/article/pii/S1026918525000113AdsorptionIsothermMethylene blueShrimp shellsUltrasonic-assisted adsorption |
| spellingShingle | Erni Misran Wahyu Pratama Kanzi Insan Kasyidi Napitupulu Muhammad Dani Supardan Dewi Agustina Iryani Viqry Pramananda Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics South African Journal of Chemical Engineering Adsorption Isotherm Methylene blue Shrimp shells Ultrasonic-assisted adsorption |
| title | Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics |
| title_full | Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics |
| title_fullStr | Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics |
| title_full_unstemmed | Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics |
| title_short | Ultrasonic-assisted adsorption of methylene blue using shrimp shells as a low-cost adsorbent: Evaluation on the adsorption isotherm, kinetics, and thermodynamics |
| title_sort | ultrasonic assisted adsorption of methylene blue using shrimp shells as a low cost adsorbent evaluation on the adsorption isotherm kinetics and thermodynamics |
| topic | Adsorption Isotherm Methylene blue Shrimp shells Ultrasonic-assisted adsorption |
| url | http://www.sciencedirect.com/science/article/pii/S1026918525000113 |
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