REMOVAL OF METHYLENE BLUE DYE BY ACTIVATED EGYPTIAN BENTONITE CLAY | ||
| Journal of Environmental Science | ||
| Article 115, Volume 51, Issue 8, August 2022, Pages 1-29 PDF (1.6 M) | ||
| Document Type: Review Article | ||
| DOI: 10.21608/jes.2022.148634.1278 | ||
| Authors | ||
| Mahmoud I. Eleraky* 1; A. M. Abd El Razek Taha2; M Abd Elbasier Ahmed2 | ||
| 1Egyption mineral resources Authority | ||
| 2Faculty of Graduate Studies and Environmental Research, Ain Shams University | ||
| Abstract | ||
| The aim of this study was activation of Egyptian calcium bentonite clay which obtained from El Alamein area, northern Egypt to use it in the removal of methylene blue dye. Egyptian bentonite was crushed, grinded by ball mill, purified using magnetic separation, treated by 0.1N acetic acid and finally activated by Acid activation (HCl, H2SO4) and alkali activation (Na2CO3, NaOH) using 1, 3, 5, 7and 9 % of acids and alkalis. The samples characterized by XRF, Cation Exchange Capacity (CEC) and free swelling. A 5 % Na2CO3 activated sample was chosen for methylene blue dye removal due to its best swelling and cation exchang capacity results. Adsorption studies were performed to evaluate the influence of various experimental parameters (pH, temperature, initial concentration, bentonite dose and time effect. Methylene blue removal was optimum at 40 oC, pH 7, 40 min, 200 ppm MB and using 1 g/L activated bentonite as adsorbent dose. | ||
| Keywords | ||
| calcium bentonite; methylene blue dye; alkali activation; free swelling; cation exchange capacity | ||
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