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Removal of Methylene blue from aqueous solution by bioadsorption onto Ricinus communis epicarp Activated Carbon. Chem. Eng. Res. Bull. [Internet]. 2009 Aug. 10 [cited 2026 Jun. 28];13(1):1-5. Available from: https://www.banglajol.info/index.php/CERB/article/view/2518