Wardhani, Gladys Ayu Paramita Kusumah, and Amri Yahya. “Adsorption Condition of Geopolymer Synthesized from Corncob Ash Using NaOH and NaSiO for Methylen Blue Removal”. Sains Natural: Journal of Biology and Chemistry, vol. 15, no. 1, Jan. 2025, pp. 19-27, doi:10.31938/jsn.v15i1.764.