摘要
对不同初始pH下铁粉还原硝酸盐时所形成的腐蚀产物进行了试验研究。结果表明:腐蚀产物的主要成分是Fe3O4和FeO(OH),随反应体系初始pH值的降低,Fe3O4的比例逐渐增大;腐蚀产物表面呈多孔疏松结构,对Fe2+具有一定的吸附作用,可在一定程度上促进铁粉对硝酸盐的还原;铁腐蚀产物的形成总体上降低了铁对硝酸盐的还原效果,较低pH值条件下形成的铁腐蚀产物对硝酸盐去除效果的影响较小。
The iron corrosion products produced by the reduction reaction between iron and nitrate under different pH were studied. The results shows that the iron corrosion products are mainly composed of Fe3O4 and FeO （ OH）, and the proportion of Fe3O4 is much higher under lower pH value ; the iron corrosion products can facilitate the nitrate reduction by adsorbing more ferrous ions because of its porous and loose structure; the iron corrosion products somewhat inhibit the reduction, and the corrosion products formed under lower pH condition have slight influence on the removal effect of nitrate.
出处
《中国给水排水》
CAS
CSCD
北大核心
2009年第11期92-94,共3页
China Water & Wastewater
基金
哈尔滨工业大学优秀青年教师培养计划项目(HITQNJS.2007.038)
关键词
铁粉
还原
硝酸盐
铁腐蚀产物
PH
iron powder
reduction
nitrate
iron corrosion products
pH
