“Proses Adsorpsi Amonia Dengan Karbon Aktif Dari Cangkang Kelapa Sawit (Palm Shell) Teraktivasi H2SO4”. Jurnal Serambi Engineering 10, no. 4 (October 7, 2025). Accessed May 19, 2026. https://jse.serambimekkah.id/index.php/jse/article/view/1294.