Dyah Setyaningrum, Setyaningrum (2026) and Novia Fajarwati, Fajarwati and Amalia Ma’rifatul Maghfiroh, Maghfiroh (2026) The Effect Of HCL Activator Concentration On The Effectiveness Of Activated Carbon Derived From Corncobs For Methylene Blue Adsorption. SPIN: Jurnal Kimia & Pendidikan Kimia, 6 (2). pp. 181-193. ISSN 2745-6854