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Application of natural and synthetic goethite for the removalof methylene blue from aqueous solutions |
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| รหัสดีโอไอ | |
| Creator | 1. Nasir Abdus-Salam 2. Fabian Audu Ugbe 3. Victoria Abiola Ikudayisi-Ugbe |
| Title | Application of natural and synthetic goethite for the removalof methylene blue from aqueous solutions |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2565 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 2 |
| Page no. | 332-338 |
| Keyword | adsorption, natural goethite, synthetic goethite, methylene blue, isotherms |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Unregulated discharge of untreated effluents into the environment by industries constitutes one of the major sources ofpollution. Adsorption technique was since discovered as a highly efficient and cheap technique for effluent detoxification. Thesearch for an efficient, low-cost, and readily available adsorbent necessitated this study, which investigates the sorption ofmethylene blue (MB) from aqueous solution by natural goethite (NGT) and synthetic goethite (SGT) particles using batchequilibrium technique. The effects of initial concentration, NGT particle size, adsorbent dosage and solution pH were evaluated,and found to have remarkable influence on the adsorption processes with optimum (pH of 12, concentration of 200 mg/L for MBNGT, 250 mg/L for MB-SGT and 0.112 mm mesh for NGT). The adsorption characteristics were quite similar, though with theadsorption capacities of 1.826 mg/g (NGT) and 27.322 mg/g (SGT). Results of isotherm modeling revealed the order of fittings;Langmuir (R2 = 0.9727) > Freundlich (0.9323) > Temkin (0.8113) for MB-NGT and Temkin (0.9217) > Freundlich (0.9171) >Langmuir (0.8529) for MB-SGT. An evaluation of isotherm investigation results with those of the kinetics and thermodynamicstudy (Ugbe & Abdus-Salam, 2020), suggest a combined physisorption and chemisorption mechanism. Therefore, this studyprovides useful information on the application of both goethite forms for MB removal. |
