Study of Malachite Green Adsorption using Tannin-Based Adsorbent (TBA) from Mangrove Bark (Rhizophora mucronata) - Theodorus Sandy Fangidae; Thomas Morus Papo Bage; Adriana Anteng Anggorowati; Yohanes Sudaryanto (Prosiding Seminar Nasional Teknik Kimia "Kejuangan", 2020)