Widi Astuti, Irene Nindita Pradnya, Triastuti Sulistyaningsih, Megawati Megawati, Mohammad Faizal Widi Hidayat, Muthi'ah Kurnia Rahmah, Luluk Arvi Cahyaning Suwandi, Afifah Sagita Fitria Wati, Zulfa Ajrina Fitri
Dye waste from the textile industry, particularly methyl violet 2B, poses significant environmental concerns due to its persistence, toxicity, and resistance to biodegradation. One effective treatment method for such dye waste is adsorption, a physical process commonly implementing activated carbon as an adsorbent. In this study, activated carbon was synthesized from moringa seed waste containing lignin, hemicellulose, and cellulose, making it a suitable raw material for producing activated carbon. This research aimed to identify the activated carbon derived from moringa oleifera seeds and evaluate its efficiency in adsorbing methyl violet 2B dye. Activated carbon was produced using KOH as an activating agent and heated in a muffle furnace at 500°C and 600°C. Characterizing the activated carbon revealed the presence of functional groups such as O-H, C=C, C=O, and C-O, with the carbon structure showing variations depending on the activation conditions. Adsorption tests indicated that the optimal conditions were pH of 11 and adsorption time of 180 minutes. © 2025 Author(s).
Department of Chemical Engineering, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Department of Chemistry, Universitas Negeri Semarang, Semarang, 50229, Indonesia; School of Agriculture, Food, and Ecosystem Science, The University of Melbourne, Parkville, 3010, VIC, Australia
