Wardhani GAPK, Yahya A. Adsorption Condition of Geopolymer Synthesized from Corncob Ash Using NaOH and NaSiO for Methylen Blue Removal. J. Sains Nat. [Internet]. 2025 Jan. 30 [cited 2026 Jun. 18];15(1):19-27. Available from: https://www.ejournalunb.ac.id/JSN/article/view/764