Adsorpsi Unsur Pengotor Larutan Natrium Silikat Menggunakan Zeolit Alam Karangnunggal. Jurnal Kimia Valensi, [S. l.], v. 2, n. 2, 2011. DOI: 10.15408/jkv.v2i2.199. Disponível em: https://journal.uinjkt.ac.id/valensi/article/view/199. Acesso em: 28 oct. 2025.