Effectiveness of a Cassava Peel Adsorbent on the Absorption of Copper (Cu2+) and Zinc (Zn2+) Metal Ions - Sulaiman, Fatah; Department of Chemical Engineering, Universitas Sultan Ageng Tirtayasa, Jalan Raya Jakarta, km 3 Pakupatan, Serang Banten - Indonesia. (International Journal on Advanced Science, Engineering and Information Technology, 2019)