Enhancing the efficiency of wastewater treatment by addition of <font>Fe</font>-based amorphous alloy powders with <font>H</font>₂<font>O</font>₂ in ferrofluid

Abstract

Using combination of ferrofluid (FF) and Fe -based amorphous alloy in the advanced treatment of high concentration, organic wastewater was investigated. The addition of Fe 73.5 Nb 3 Cu 1 Si 13.5 B 9 amorphous alloy powders into a FF give rise to a dramatic enhancement in decreasing chemical oxygen demand (COD) and decolorization. The removal rate of COD by using FF that combined Fe 73.5 Nb 3 Cu 1 Si 13.5 B 9 metallic glass (MG) particles reached 92% in the presence of H 2 O 2 , nearly more than 50% higher than that by using only FF. Furthermore, compared with the FF, the decolorizing effect of the combination was 20% higher. It has been found that MG powders with the amorphous structures have high efficiency of waste water treatment and lead to high catalytic ability.