Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption
Abstract Date palm stones are regarded as possible alternatives to activated carbon (AC) precursors with high potential for various environmental applications. In this research study, date palm stones derived activated carbon (DPSAC) was used as adsorbent for removing toxic remazol brilliant blue R...
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| Format: | Article |
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Nature Portfolio
2023-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-45864-z |
| _version_ | 1827770635348082688 |
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| author | Saud S. Aloud Hattan A. Alharbi Bassim H. Hameed John P. Giesy Saad S. Almady Khaled D. Alotaibi |
| author_facet | Saud S. Aloud Hattan A. Alharbi Bassim H. Hameed John P. Giesy Saad S. Almady Khaled D. Alotaibi |
| author_sort | Saud S. Aloud |
| collection | DOAJ |
| description | Abstract Date palm stones are regarded as possible alternatives to activated carbon (AC) precursors with high potential for various environmental applications. In this research study, date palm stones derived activated carbon (DPSAC) was used as adsorbent for removing toxic remazol brilliant blue R (RBBR). The synthesis of DPSAC involved a chemical treatment using KOH and NaOH (1:1). Characterization of DPSAC revealed that it exhibited a BET surface area of 715.30 m2/g, Langmuir surface area of 1061.93 m2/g, total pore volume of 0.39 cm3/g, and average pore diameter of 2.15 nm. Adsorption uptake of RBBR increased (from 24.54 to 248.54 mg/g), whereas the removal percentage decreased (from 98.16 to 82.85%) when the initial RBBR concentration increased (from 25 to 300 mg/L). The adsorption process performed best under acidic conditions (pH 3), with an RBBR uptake of 98.33 mg/g. Because of the high R2 values (0.9906 and 0.9779) and low average errors (6.24 and 13.95%), this adsorption process followed the Freundlich isotherm and pseudo-first-order (PFO) models, respectively. The Langmuir adsorption capacity (Qm) was 319.63 mg/g. Thermodynamic parameters were − 11.34 kJ/mol for ∆H° (exothermic in nature), 0.05 kJ/mol K for ∆S° (increasing randomness level at solid–liquid interface), − 27.37 kJ/mol for ∆G° (spontaneous), and 6.84 kJ/mol for Ea (controlled by physisorption). |
| first_indexed | 2024-03-11T12:42:25Z |
| format | Article |
| id | doaj.art-10fba79bbc9948c180b9588a59dd81cb |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-11T12:42:25Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-10fba79bbc9948c180b9588a59dd81cb2023-11-05T12:12:57ZengNature PortfolioScientific Reports2045-23222023-11-0113111210.1038/s41598-023-45864-zProduction of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorptionSaud S. Aloud0Hattan A. Alharbi1Bassim H. Hameed2John P. Giesy3Saad S. Almady4Khaled D. Alotaibi5Department of Soil Science, College of Food and Agriculture Sciences, King Saud UniversityDepartment of Plant Protection, College of Food and Agriculture Sciences, King Saud UniversityDepartment of Chemical Engineering, College of Engineering, Qatar UniversityDepartment of Biomedical Sciences and Toxicology Centre, University of SaskatchewanAgricultural Engineering Department, College of Food and Agriculture Sciences, King Saud UniversityDepartment of Soil Science, College of Food and Agriculture Sciences, King Saud UniversityAbstract Date palm stones are regarded as possible alternatives to activated carbon (AC) precursors with high potential for various environmental applications. In this research study, date palm stones derived activated carbon (DPSAC) was used as adsorbent for removing toxic remazol brilliant blue R (RBBR). The synthesis of DPSAC involved a chemical treatment using KOH and NaOH (1:1). Characterization of DPSAC revealed that it exhibited a BET surface area of 715.30 m2/g, Langmuir surface area of 1061.93 m2/g, total pore volume of 0.39 cm3/g, and average pore diameter of 2.15 nm. Adsorption uptake of RBBR increased (from 24.54 to 248.54 mg/g), whereas the removal percentage decreased (from 98.16 to 82.85%) when the initial RBBR concentration increased (from 25 to 300 mg/L). The adsorption process performed best under acidic conditions (pH 3), with an RBBR uptake of 98.33 mg/g. Because of the high R2 values (0.9906 and 0.9779) and low average errors (6.24 and 13.95%), this adsorption process followed the Freundlich isotherm and pseudo-first-order (PFO) models, respectively. The Langmuir adsorption capacity (Qm) was 319.63 mg/g. Thermodynamic parameters were − 11.34 kJ/mol for ∆H° (exothermic in nature), 0.05 kJ/mol K for ∆S° (increasing randomness level at solid–liquid interface), − 27.37 kJ/mol for ∆G° (spontaneous), and 6.84 kJ/mol for Ea (controlled by physisorption).https://doi.org/10.1038/s41598-023-45864-z |
| spellingShingle | Saud S. Aloud Hattan A. Alharbi Bassim H. Hameed John P. Giesy Saad S. Almady Khaled D. Alotaibi Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption Scientific Reports |
| title | Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption |
| title_full | Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption |
| title_fullStr | Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption |
| title_full_unstemmed | Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption |
| title_short | Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption |
| title_sort | production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted koh naoh mixture activation for dye adsorption |
| url | https://doi.org/10.1038/s41598-023-45864-z |
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