Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water
Abtract: The increasing presence of oxytetracycline (OTC) in water sources due to its extensive use in aquaculture and livestock rearing necessitates effective removal techniques. We evaluated the adsorption performance of two forms of bamboo-derived biochar, one produced through CO2 activation (B1)...
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| Language: | English |
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Elsevier
2025-05-01
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| Series: | Advances in Bamboo Science |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773139125000230 |
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| author | Hong Nam Nguyen Thanh Phong Bui Thi Thu Huong Tran Thi Hong Hanh Nguyen Phuong Thu Le |
| author_facet | Hong Nam Nguyen Thanh Phong Bui Thi Thu Huong Tran Thi Hong Hanh Nguyen Phuong Thu Le |
| author_sort | Hong Nam Nguyen |
| collection | DOAJ |
| description | Abtract: The increasing presence of oxytetracycline (OTC) in water sources due to its extensive use in aquaculture and livestock rearing necessitates effective removal techniques. We evaluated the adsorption performance of two forms of bamboo-derived biochar, one produced through CO2 activation (B1) and the other produced through steam activation (B2), in both batch and continuous systems. The results showed that bamboo-derived biochar exhibited low ash content and high fixed carbon, with the biochar produced by steam activation (B2) demonstrating better porosity, as evidenced by lower bulk density and bee-hive structures observed in the SEM images. Batch experiments showed that B2 exhibited a higher maximum adsorption capacity (34.3 mg/g) compared to B1 (21.5 mg/g) under optimized conditions. Continuous column experiments revealed that B2 achieved superior performance, with a breakthrough time of 50 h and a maximum adsorption capacity of 100 mg/g, significantly higher than B1's breakthrough time of 20 h and capacity of 44 mg/g. Under re-used conditions, B2 out-performed B1 with Ce/C0 stabilizing at ∼0.1, compared to ∼0.4 for B1, highlighting the enhanced efficiency of B2 over repeated cycles. However, after regeneration using distilled water, both materials exhibited a significant decline in adsorption performance, with Ce/C0 values exceeding 0.8, indicating the ineffectiveness of the regeneration method. These results emphasize the structural advantages of B2, contributing to its superior adsorption performance in both batch and continuous systems. Despite these strengths, the limited reusability of both materials underscores the need for optimized regeneration protocols. |
| format | Article |
| id | doaj-art-7fc76f84190e435f858ef4af76c13122 |
| institution | OA Journals |
| issn | 2773-1391 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
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| series | Advances in Bamboo Science |
| spelling | doaj-art-7fc76f84190e435f858ef4af76c131222025-08-20T02:31:02ZengElsevierAdvances in Bamboo Science2773-13912025-05-011110014410.1016/j.bamboo.2025.100144Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from waterHong Nam Nguyen0Thanh Phong Bui1Thi Thu Huong Tran2Thi Hong Hanh Nguyen3Phuong Thu Le4University of Science and Technology of Hanoi, A21 Building, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet NamUniversity of Engineering and Technology, Vietnam National University, 144 Xuan Thuy, Cau Giay, Hanoi, Viet NamFaculty of Environment, Ha Noi University of Mining and Geology, Ha Noi, Viet Nam; Innovations for Sustainable and Responsible Mining Research Group, Hanoi University of Mining and Geology, Ha Noi, Viet NamFaculty of Environment, Hanoi University of Natural Resources and Environment, 41A Phu Dien, Nam Tu Liem, Ha Noi, Viet NamUniversity of Science and Technology of Hanoi, A21 Building, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam; Corresponding author.Abtract: The increasing presence of oxytetracycline (OTC) in water sources due to its extensive use in aquaculture and livestock rearing necessitates effective removal techniques. We evaluated the adsorption performance of two forms of bamboo-derived biochar, one produced through CO2 activation (B1) and the other produced through steam activation (B2), in both batch and continuous systems. The results showed that bamboo-derived biochar exhibited low ash content and high fixed carbon, with the biochar produced by steam activation (B2) demonstrating better porosity, as evidenced by lower bulk density and bee-hive structures observed in the SEM images. Batch experiments showed that B2 exhibited a higher maximum adsorption capacity (34.3 mg/g) compared to B1 (21.5 mg/g) under optimized conditions. Continuous column experiments revealed that B2 achieved superior performance, with a breakthrough time of 50 h and a maximum adsorption capacity of 100 mg/g, significantly higher than B1's breakthrough time of 20 h and capacity of 44 mg/g. Under re-used conditions, B2 out-performed B1 with Ce/C0 stabilizing at ∼0.1, compared to ∼0.4 for B1, highlighting the enhanced efficiency of B2 over repeated cycles. However, after regeneration using distilled water, both materials exhibited a significant decline in adsorption performance, with Ce/C0 values exceeding 0.8, indicating the ineffectiveness of the regeneration method. These results emphasize the structural advantages of B2, contributing to its superior adsorption performance in both batch and continuous systems. Despite these strengths, the limited reusability of both materials underscores the need for optimized regeneration protocols.http://www.sciencedirect.com/science/article/pii/S2773139125000230AdsorptionBamboo biocharBatch experimentsFixed-bed columnOxytetracycline |
| spellingShingle | Hong Nam Nguyen Thanh Phong Bui Thi Thu Huong Tran Thi Hong Hanh Nguyen Phuong Thu Le Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water Advances in Bamboo Science Adsorption Bamboo biochar Batch experiments Fixed-bed column Oxytetracycline |
| title | Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| title_full | Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| title_fullStr | Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| title_full_unstemmed | Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| title_short | Bamboo-derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| title_sort | bamboo derived biochar as an efficient adsorbent for oxytetracycline removal from water |
| topic | Adsorption Bamboo biochar Batch experiments Fixed-bed column Oxytetracycline |
| url | http://www.sciencedirect.com/science/article/pii/S2773139125000230 |
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