Fe_(78)Si_(9)B_(13)非晶条带对水中Sb(Ⅲ)的去除性能研究

Study on removal performance of Sb(Ⅲ)by Fe_(78)Si_(9)B_(13) amorphous ribbons

采用单辊甩带法制备Fe_(78)Si_(9)B_(13)非晶条带,以300目铁粉为参比物,对比研究了非晶条带对Sb(Ⅲ)的去除效果。结果显示,非晶条带在90 min内对Sb(Ⅲ)的去除率为90.6%,并且表面积约化反应速率系数高达铁粉的41倍。对反应产物进行观察分析,发现Si、B会在非晶条带表面富集,有益于表面产物层的脱落。此外,非晶条带通过吸附去除Sb(Ⅲ),将条带循环使用6次后,仍能保持62.3%的去除率。

In this work,the Fe_(78)Si_(9)B_(13) amorphous ribbons were prepared by melt-spinning technique,and the removal effect of Sb(Ⅲ)by the amorphous ribbons was comparatively studied with 300 mesh iron powders as reference.The results showed that the removal rate of Sb(Ⅲ)by the amorphous ribbons was 90.6%within 90 min,and the surface normalized reaction rate constants was as high as 41 times than that of 300 mesh iron powders.By observing and analyzing the reaction products,it was found that Si and B will be enriched on the surface of the amorphous ribbons,which is beneficial to the shedding of the surface product layer.In addition,the removal of Sb(Ⅲ)by amorphous ribbons depends on adsorption,and the removal rate of 62.3%can still be maintained after being reused for 6 times.