硅酸盐学报2012，Vol.40Issue(8)：1197-1203,7.
氢气还原针铁矿去除水中的亚硝酸盐
Removal of Nitrite in Wastewater with Goethite Reduced by Hydrogen
摘要
Abstract
Reduced iron powders were obtained via the reduction of natural goethite and symhetic goethite by hydrogen. Effects of reaction time, pH value, initial nitrite concentration on the removal rate of nitrite by two kinds of reduced iron powders were investi- gated. The results show that nitrite removal rate by the reduced iron powder prepared by reduction of synthetic goethite is greater than that reduction of natural goethite when reaction time is 〈 3 h, initial nitrite concentration is 〈 16 mg/L and ratio of iron-to-nitrite is 〈 33：1. However, nitrite removal rate by the reduced iron powder prepared from natural goethite is greater than nitrite removal rate by the reduced iron powder prepared from synthetic goethite when reaction time is 〉 3 h, initial nitrite concentration is 〉 16 mg/L and ratio of iron-to-nitrite is 〉 33：1. The substitution of aluminum in the structure of goethite affects the formation of passivation film on iron powder, increasing the stability of iron powder for the removal of nitrite and the nitrite removal efficiency.关键词
合成针铁矿/天然针铁矿/还原铁粉/亚硝酸盐去除率/铝替代Key words
synthetic goethite/natural goethite/reduced iron powder/nitrite removal rate/aluminum substitution分类
化学化工引用本文复制引用
常冬寅,陈天虎,刘海波,庆承松,谢巧勤,邹雪华,刘雨..氢气还原针铁矿去除水中的亚硝酸盐[J].硅酸盐学报,2012,40(8):1197-1203,7.基金项目
高等学校博士学科点专项科研基金（20110111112003）资助 （）
