Liu, L.H., H.N. Ai, Y. Lin, Y.Y. Liu, and Q. He. “Adsorption of Methylene Blue on Sewage Sludge Based Granular Activated Carbon”. Asian Journal of Chemistry 26, no. 17 (August 12, 2014): 5531–5534. Accessed August 26, 2024. https://asianpubs.org/index.php/ajchem/article/view/26_18_49.