Adsorption Characteristics of Coconut Husk Biochar for Organics in Water
Biochar was produced from coconut husk by simple pyrolysis at 600 °C, aiming for low-cost production. The biochar was characterized and studied for adsorption of four types of antibiotics and organic contaminants, which were levofloxacin (LEV), doxycycline (DOX), tartrazine (Tar), and rhodamine B (R...
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Department of Chemistry, Universitas Gadjah Mada
2025-05-01
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| Series: | Indonesian Journal of Chemistry |
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| Online Access: | https://jurnal.ugm.ac.id/ijc/article/view/99722 |
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| author | Vo Cong Minh Nguyen Nhat Huy Thuy Nguyen Thi Lien Thi Le Nguyen |
| author_facet | Vo Cong Minh Nguyen Nhat Huy Thuy Nguyen Thi Lien Thi Le Nguyen |
| author_sort | Vo Cong Minh |
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| description | Biochar was produced from coconut husk by simple pyrolysis at 600 °C, aiming for low-cost production. The biochar was characterized and studied for adsorption of four types of antibiotics and organic contaminants, which were levofloxacin (LEV), doxycycline (DOX), tartrazine (Tar), and rhodamine B (RhB), in water. The EDX and FTIR analysis shows homogeneous active centers of the biochar. The high surface area, i.e., 664.66 m2/g, and total pore volume of 0.8159 cm3/g were determined by BET analysis, and the pore structure observed in SEM shows the appropriation of the material for adsorption of organic contaminants in the water. Adsorption conditions were studied and the results revealed that the adsorption mechanism varies among different adsorbate’s molecular structures. The result shows that cationic dye (RhB) is better absorbed by the coconut biochar than anionic dye (Tar) and the covalent antibiotic (DOX, LEV). The maximal adsorption capacities under optimal pH conditions were 172.41 mgRhB/g, 48.31 mgDOX/g, 42.37 mgLEV/g, and 21.37 mgTar/g. The best experimental fit for the adsorption data was Langmuir isotherm. The thermodynamic studies implied that the adsorption mechanism was physical adsorption (e.g., LEV, DOX, Tar), while RhB adsorption is more likely to be chemisorbed. |
| format | Article |
| id | doaj-art-f2b8bd4cefc949d49f2f46d8f3b44f29 |
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| issn | 1411-9420 2460-1578 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Department of Chemistry, Universitas Gadjah Mada |
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| series | Indonesian Journal of Chemistry |
| spelling | doaj-art-f2b8bd4cefc949d49f2f46d8f3b44f292025-08-20T02:05:24ZengDepartment of Chemistry, Universitas Gadjah MadaIndonesian Journal of Chemistry1411-94202460-15782025-05-0125373074310.22146/ijc.9972237318Adsorption Characteristics of Coconut Husk Biochar for Organics in WaterVo Cong Minh0Nguyen Nhat Huy1Thuy Nguyen Thi2Lien Thi Le Nguyen3Faculty of Chemistry, Ho Chi Minh City University of Education (HCMUE), 280 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam; Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam; Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, VietnamFaculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, Vietnam; Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, VietnamVietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam; School of Chemical and Environmental Engineering, International University (HCMIU), Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City 700000, VietnamVietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000, Vietnam; Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 700000, VietnamBiochar was produced from coconut husk by simple pyrolysis at 600 °C, aiming for low-cost production. The biochar was characterized and studied for adsorption of four types of antibiotics and organic contaminants, which were levofloxacin (LEV), doxycycline (DOX), tartrazine (Tar), and rhodamine B (RhB), in water. The EDX and FTIR analysis shows homogeneous active centers of the biochar. The high surface area, i.e., 664.66 m2/g, and total pore volume of 0.8159 cm3/g were determined by BET analysis, and the pore structure observed in SEM shows the appropriation of the material for adsorption of organic contaminants in the water. Adsorption conditions were studied and the results revealed that the adsorption mechanism varies among different adsorbate’s molecular structures. The result shows that cationic dye (RhB) is better absorbed by the coconut biochar than anionic dye (Tar) and the covalent antibiotic (DOX, LEV). The maximal adsorption capacities under optimal pH conditions were 172.41 mgRhB/g, 48.31 mgDOX/g, 42.37 mgLEV/g, and 21.37 mgTar/g. The best experimental fit for the adsorption data was Langmuir isotherm. The thermodynamic studies implied that the adsorption mechanism was physical adsorption (e.g., LEV, DOX, Tar), while RhB adsorption is more likely to be chemisorbed.https://jurnal.ugm.ac.id/ijc/article/view/99722biocharadsorptiondyeantibioticsorganic contaminants |
| spellingShingle | Vo Cong Minh Nguyen Nhat Huy Thuy Nguyen Thi Lien Thi Le Nguyen Adsorption Characteristics of Coconut Husk Biochar for Organics in Water Indonesian Journal of Chemistry biochar adsorption dye antibiotics organic contaminants |
| title | Adsorption Characteristics of Coconut Husk Biochar for Organics in Water |
| title_full | Adsorption Characteristics of Coconut Husk Biochar for Organics in Water |
| title_fullStr | Adsorption Characteristics of Coconut Husk Biochar for Organics in Water |
| title_full_unstemmed | Adsorption Characteristics of Coconut Husk Biochar for Organics in Water |
| title_short | Adsorption Characteristics of Coconut Husk Biochar for Organics in Water |
| title_sort | adsorption characteristics of coconut husk biochar for organics in water |
| topic | biochar adsorption dye antibiotics organic contaminants |
| url | https://jurnal.ugm.ac.id/ijc/article/view/99722 |
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