Adsorpsi Logam Krom (Cr) Total Limbah Cair Batik Menggunakan Karbon Aktif Ampas Kopi. WAKTU: Jurnal Teknik UNIPA, [S. l.], v. 22, n. 02, p. 39–46, 2024. DOI: 10.36456/waktu.v22i02.8961. Disponível em: https://jurnal.unipasby.ac.id/waktu/article/view/8961. Acesso em: 26 aug. 2026.