Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution
This study aimed to develop and optimize a geopolymer composite using laterite and recycled beer bottle glass (RBB) as precursors for the adsorption of methylene blue (MB) from aqueous solutions. The synthesis process was optimized through a Box-Behnken design by varying three key factors: laterite...
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| Language: | English |
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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/S194439862500205X |
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| author | Ludovic Kemdjien Armand Tchakounte Idriss Lenou Sylvain Tome Charles Kede |
| author_facet | Ludovic Kemdjien Armand Tchakounte Idriss Lenou Sylvain Tome Charles Kede |
| author_sort | Ludovic Kemdjien |
| collection | DOAJ |
| description | This study aimed to develop and optimize a geopolymer composite using laterite and recycled beer bottle glass (RBB) as precursors for the adsorption of methylene blue (MB) from aqueous solutions. The synthesis process was optimized through a Box-Behnken design by varying three key factors: laterite mass (50–60 g), RBB mass (0–5 g), and sodium silicate-to-sodium hydroxide ratio (1.5–2.5). The optimal conditions were found to be 50 g of laterite, 0.114 g of RBB, and a silicate-to-hydroxide ratio of 2.5. Under these conditions, the geopolymer achieved high iodine and methylene blue indices of 348.05 mg/g and 74.87 mg/g, respectively. Characterization (XRD, FTIR, SEM, TGA) confirmed the formation of amorphous aluminosilicate phases and a dense matrix structure favorable for adsorption. Batch adsorption experiments revealed a maximum MB adsorption capacity of 12.63 mg/g, best described by the Langmuir isotherm and pseudo-second-order kinetic model, suggesting monolayer chemisorption. These results highlight the potential of this low-cost, waste-derived geopolymer as an efficient adsorbent for dye removal, promoting both environmental sustainability and circular economy principles. |
| format | Article |
| id | doaj-art-128398afcb1f418eb120eae86dfa10d6 |
| institution | OA Journals |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-128398afcb1f418eb120eae86dfa10d62025-08-20T02:03:25ZengElsevierDesalination and Water Treatment1944-39862025-04-0132210118910.1016/j.dwt.2025.101189Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solutionLudovic Kemdjien0Armand Tchakounte1Idriss Lenou2Sylvain Tome3Charles Kede4Department of Chemistry, Faculty of Science, University of Douala, Douala 24175, CameroonDepartment of Chemistry, Faculty of Science, University of Douala, Douala 24175, Cameroon; Corresponding author.Department of Chemistry, Faculty of Science, University of Douala, Douala 24175, CameroonDepartment of Chemistry, Faculty of Science, University of Douala, Douala 24175, CameroonDepartment of Chemistry, Faculty of Science, University of Douala, Douala 24175, Cameroon; Laboratory of Chemical and Industrial Bioprocess Engineering, National Higher Polytechnic School of Douala, University of Douala, Douala 2701, Cameroon; Corresponding author at: Department of Chemistry, Faculty of Science, University of Douala, Douala 24175, Cameroon.This study aimed to develop and optimize a geopolymer composite using laterite and recycled beer bottle glass (RBB) as precursors for the adsorption of methylene blue (MB) from aqueous solutions. The synthesis process was optimized through a Box-Behnken design by varying three key factors: laterite mass (50–60 g), RBB mass (0–5 g), and sodium silicate-to-sodium hydroxide ratio (1.5–2.5). The optimal conditions were found to be 50 g of laterite, 0.114 g of RBB, and a silicate-to-hydroxide ratio of 2.5. Under these conditions, the geopolymer achieved high iodine and methylene blue indices of 348.05 mg/g and 74.87 mg/g, respectively. Characterization (XRD, FTIR, SEM, TGA) confirmed the formation of amorphous aluminosilicate phases and a dense matrix structure favorable for adsorption. Batch adsorption experiments revealed a maximum MB adsorption capacity of 12.63 mg/g, best described by the Langmuir isotherm and pseudo-second-order kinetic model, suggesting monolayer chemisorption. These results highlight the potential of this low-cost, waste-derived geopolymer as an efficient adsorbent for dye removal, promoting both environmental sustainability and circular economy principles.http://www.sciencedirect.com/science/article/pii/S194439862500205XGeopolymerChemisorptionMethylene blueLateriteBox-Behnken design |
| spellingShingle | Ludovic Kemdjien Armand Tchakounte Idriss Lenou Sylvain Tome Charles Kede Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution Desalination and Water Treatment Geopolymer Chemisorption Methylene blue Laterite Box-Behnken design |
| title | Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution |
| title_full | Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution |
| title_fullStr | Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution |
| title_full_unstemmed | Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution |
| title_short | Optimization of synthesis of a geopolymer based on laterite/beer bottles composites for adsorption of methylene blue in aqueous solution |
| title_sort | optimization of synthesis of a geopolymer based on laterite beer bottles composites for adsorption of methylene blue in aqueous solution |
| topic | Geopolymer Chemisorption Methylene blue Laterite Box-Behnken design |
| url | http://www.sciencedirect.com/science/article/pii/S194439862500205X |
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