Sunardi. Treating Waste with Waste : Utilization of Iron Powder for the Reduction of Chromium (Cr6+) in Metal Plating Industry Liquid Waste. JSE [Internet]. 2024 Jul. 6 [cited 2025 Apr. 26];9(3). Available from: https://jurnal-serambimekkah.org/index.php/jse/article/view/1929