Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent
Marine algae, Sargassum horneri (S. horneri) and Ulva australis (U. australis), massively occur along the coasts of South Korea and are harvested annually due to negative impact on marine environment. To convert this biowaste into a biosorbent, this study investigated the adsorption capacity of cati...
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| Format: | Article |
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Elsevier
2025-07-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625003674 |
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| author | Narae Kim Jae-Wook Lee Taesoon Jang Soyeong Yoon Jin-Hyuk Choi Eunmi Hong Jeong-Ann Park |
| author_facet | Narae Kim Jae-Wook Lee Taesoon Jang Soyeong Yoon Jin-Hyuk Choi Eunmi Hong Jeong-Ann Park |
| author_sort | Narae Kim |
| collection | DOAJ |
| description | Marine algae, Sargassum horneri (S. horneri) and Ulva australis (U. australis), massively occur along the coasts of South Korea and are harvested annually due to negative impact on marine environment. To convert this biowaste into a biosorbent, this study investigated the adsorption capacity of cationic dyes (methylene blue (MB) and toluidine blue (TB)) from aqueous solutions. The collected algae were washed with tap and distilled water, dried at 80 °C, ground, and sieved to obtain a uniform biosorbent (average size of 0.4 mm). Adsorption parameters, including reaction time, initial dye concentration, and temperature were investigated. Kinetic experiments revealed that dye adsorption by both biosorbents reached equilibrium within 2 h, following a pseudo-second-order kinetic model. Langmuir equation described well of the adsorption behavior of both dyes, demonstrated monolayer adsorption. Adsorption of MB and TB were more effective using S. horneri than U. australis. Furthermore, as the temperature increased, the Gibbs free energy change (∆G°) decreased, confirming spontaneous and endothermic reaction. Also, both biosorbents successfully reused 3 times after simple regeneration process (treated in 0.1 M HCl solution for 4 h). These findings highlight the potential of S. horneri and U. australis biosorbent as effective natural adsorbents for cationic organic dye removal. |
| format | Article |
| id | doaj-art-e631310f73a146aa8ddf30cb318ea0c2 |
| institution | Kabale University |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-e631310f73a146aa8ddf30cb318ea0c22025-08-20T03:58:07ZengElsevierDesalination and Water Treatment1944-39862025-07-0132310135110.1016/j.dwt.2025.101351Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbentNarae Kim0Jae-Wook Lee1Taesoon Jang2Soyeong Yoon3Jin-Hyuk Choi4Eunmi Hong5Jeong-Ann Park6Department of Interdisciplinary Program in Integrated Energy and Infra System, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Environment Science, Kangwon National University, Chuncheon, Gangwon-do 24341, Republic of Korea; Interdisciplinary Program in Earth Environmental System Science & Engineering, Kangwon National University, Chuncheon, Gangwon State 24341, Republic of Korea; Correspondence to: Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea.Department of Interdisciplinary Program in Integrated Energy and Infra System, Kangwon National University, Chuncheon 24341, Republic of Korea; Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea; Corresponding author at: Department of Environmental Engineering, Kangwon National University, Chuncheon 24341, Republic of Korea.Marine algae, Sargassum horneri (S. horneri) and Ulva australis (U. australis), massively occur along the coasts of South Korea and are harvested annually due to negative impact on marine environment. To convert this biowaste into a biosorbent, this study investigated the adsorption capacity of cationic dyes (methylene blue (MB) and toluidine blue (TB)) from aqueous solutions. The collected algae were washed with tap and distilled water, dried at 80 °C, ground, and sieved to obtain a uniform biosorbent (average size of 0.4 mm). Adsorption parameters, including reaction time, initial dye concentration, and temperature were investigated. Kinetic experiments revealed that dye adsorption by both biosorbents reached equilibrium within 2 h, following a pseudo-second-order kinetic model. Langmuir equation described well of the adsorption behavior of both dyes, demonstrated monolayer adsorption. Adsorption of MB and TB were more effective using S. horneri than U. australis. Furthermore, as the temperature increased, the Gibbs free energy change (∆G°) decreased, confirming spontaneous and endothermic reaction. Also, both biosorbents successfully reused 3 times after simple regeneration process (treated in 0.1 M HCl solution for 4 h). These findings highlight the potential of S. horneri and U. australis biosorbent as effective natural adsorbents for cationic organic dye removal.http://www.sciencedirect.com/science/article/pii/S1944398625003674Marine algaeBiomassBiosorbentCationic dyeSargassum horneriUlva australis |
| spellingShingle | Narae Kim Jae-Wook Lee Taesoon Jang Soyeong Yoon Jin-Hyuk Choi Eunmi Hong Jeong-Ann Park Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent Desalination and Water Treatment Marine algae Biomass Biosorbent Cationic dye Sargassum horneri Ulva australis |
| title | Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent |
| title_full | Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent |
| title_fullStr | Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent |
| title_full_unstemmed | Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent |
| title_short | Adsorption of cationic dyes using Sargassum horneri and Ulva australis biosorbent |
| title_sort | adsorption of cationic dyes using sargassum horneri and ulva australis biosorbent |
| topic | Marine algae Biomass Biosorbent Cationic dye Sargassum horneri Ulva australis |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625003674 |
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