Muhammad Faisal, Asri Gani and Abubakar. REMOVAL OF COPPER IONS FROM AQUEOUS SOLUTION USING PALM SHELL CHARCOAL ACTIVATED BY NAOH. INTERNATIONAL JOURNAL OF GEOMATE [Internet]. 2018 May 18 [cited 2025 Jul. 10];15(48):143-7. Available from: https://geomatejournal.com/geomate/article/view/906