Removal of Rhodamine B from aqueous solutions using coffee residual
Coffee residual (CR) was coated with iron oxide to remove Rhodamine B (RhB) in aqueous solution. There has been little research into eliminating RhB with CR coated with iron oxide. Thus, the optimal conditions and adsorption process for removing RhB were discovered. The optimal conditions for removi...
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Elsevier
2025-04-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625002048 |
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| author | Choong Jeon Moo Joon Shim |
| author_facet | Choong Jeon Moo Joon Shim |
| author_sort | Choong Jeon |
| collection | DOAJ |
| description | Coffee residual (CR) was coated with iron oxide to remove Rhodamine B (RhB) in aqueous solution. There has been little research into eliminating RhB with CR coated with iron oxide. Thus, the optimal conditions and adsorption process for removing RhB were discovered. The optimal conditions for removing RhB was determined. The ideal parameters observed were: RhB concentration = 20 mg/L, reaction duration = 4 hours, adsorbent dosage = 0.1 g, and temperature = 45℃. According to the isothermal adsorption equation, RhB adsorption onto CR@Fe3O4 takes place in both mono and multi layers. The RhB adsorption process in aqueous solution employing CR@Fe3O4 was better suited for the pseudo-second-order model, indicating that chemisorption regulated the adsorption process. The maximum adsorption capacity was 64.94 mg/g, which is higher than that of an agricultural waste adsorbent treated just with chemicals. These results clearly show that CR coated with iron oxide performs better as an RhB adsorbent than agricultural byproducts chemically treated. However, the adsorbent created has a lower maximum adsorption capacity than biochar thus suggesting further study is required to develop technology for an adsorbent with a higher adsorption capacity. |
| format | Article |
| id | doaj-art-d3daa76fe6dd460f9f5248251b26be25 |
| institution | DOAJ |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-d3daa76fe6dd460f9f5248251b26be252025-08-20T03:07:51ZengElsevierDesalination and Water Treatment1944-39862025-04-0132210118810.1016/j.dwt.2025.101188Removal of Rhodamine B from aqueous solutions using coffee residualChoong Jeon0Moo Joon Shim1Department of Advanced Materials and Biochemical Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Biosystems and Convergence Engineering, Catholic Kwandong University, Gangneung 25601, Republic of Korea; Corresponding author.Coffee residual (CR) was coated with iron oxide to remove Rhodamine B (RhB) in aqueous solution. There has been little research into eliminating RhB with CR coated with iron oxide. Thus, the optimal conditions and adsorption process for removing RhB were discovered. The optimal conditions for removing RhB was determined. The ideal parameters observed were: RhB concentration = 20 mg/L, reaction duration = 4 hours, adsorbent dosage = 0.1 g, and temperature = 45℃. According to the isothermal adsorption equation, RhB adsorption onto CR@Fe3O4 takes place in both mono and multi layers. The RhB adsorption process in aqueous solution employing CR@Fe3O4 was better suited for the pseudo-second-order model, indicating that chemisorption regulated the adsorption process. The maximum adsorption capacity was 64.94 mg/g, which is higher than that of an agricultural waste adsorbent treated just with chemicals. These results clearly show that CR coated with iron oxide performs better as an RhB adsorbent than agricultural byproducts chemically treated. However, the adsorbent created has a lower maximum adsorption capacity than biochar thus suggesting further study is required to develop technology for an adsorbent with a higher adsorption capacity.http://www.sciencedirect.com/science/article/pii/S1944398625002048Coffee residualAdsorbentRhodamine BAdsorptionAdsorbent coated with iron oxide |
| spellingShingle | Choong Jeon Moo Joon Shim Removal of Rhodamine B from aqueous solutions using coffee residual Desalination and Water Treatment Coffee residual Adsorbent Rhodamine B Adsorption Adsorbent coated with iron oxide |
| title | Removal of Rhodamine B from aqueous solutions using coffee residual |
| title_full | Removal of Rhodamine B from aqueous solutions using coffee residual |
| title_fullStr | Removal of Rhodamine B from aqueous solutions using coffee residual |
| title_full_unstemmed | Removal of Rhodamine B from aqueous solutions using coffee residual |
| title_short | Removal of Rhodamine B from aqueous solutions using coffee residual |
| title_sort | removal of rhodamine b from aqueous solutions using coffee residual |
| topic | Coffee residual Adsorbent Rhodamine B Adsorption Adsorbent coated with iron oxide |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625002048 |
| work_keys_str_mv | AT choongjeon removalofrhodaminebfromaqueoussolutionsusingcoffeeresidual AT moojoonshim removalofrhodaminebfromaqueoussolutionsusingcoffeeresidual |