本研究將我國規範之有害事業廢棄物-集塵灰(A-7101)作為合成六價鐵之來源，透過濕式冶金法將其有害成分進行逐步分離、淨化，因其含有高量之鐵元素，故可作為合成六價鐵之鐵源，初步成果能夠合成純度達91 %。六價鐵為具多功能之淨水藥劑，故本研究以亞甲基藍與雙酚A作為目標污染物進行除污降解試驗，在不同濃度下測試，其兩者能在極短時間內大幅地降低目標物之濃度，並自身迅速地還原成無害之Fe(III)。 This study focuses on preparation of potassium ferrate (Fe(VI)) from hazardous steel-making wastes, electric arc furnace dust (EAFDs), and its application for treating different-concentration methylene blue (MB) and Bisphenol A. Results indicate that K2FeO4 of high purity level (≧ 90 %) can be successfully prepared from EAFD through hydrometallurgical method. Within 30 second reaction time, methylene blue (MB) is completely de-colorized and Bisphenol A (BPA) is significantly reduced in concentration.
