溶液中Fe~(2+)强化Fe~0还原NO_3~-的机制
文献类型：期刊论文
| 作者 | 陈占; 王海波; 韩陆超; 胡学香; 赵丹 |
| 刊名 | 环境工程学报
 |
| 出版日期 | 2016 |
| 卷号 | 10期号:9页码:4940-4944 |
| 关键词 | NO_3~-还原 反应动力学 电子传递 |
| 其他题名 | Mechanism of promotion effect of Fe~(2+) on nitrate reduction by Fe~0 |
| 中文摘要 | 通过不同条件下Fe~0还原NO_3~-的研究发现,在中性条件下溶液中Fe~(2+)明显强化了Fe~0对NO_3~-的还原,最终还原产物以NH_4~+ -N为主,而反应过程中Fe~(2+)消耗与NO_3~-还原量存在明显的正相关性。在Fe~(2+)初始浓度为1 ~ 8 mmol· L~(-1)条件下,6 g·L~(-1)的Fe~0对初始浓度为100 mg·L~(-1) NO_3~-的还原符合零级反应动力学过程,结合电化学和X射线衍射分析,证明Fe~(2+)通过沉积到Fe~0表面,加速了电子传递过程,促进Fe~0表面活性,从而强化了Fe~0对NO_3~-的还原。 |
| 英文摘要 | In this work,nitrate reduction by Fe~0 under different conditions was studied. The results indicated that dissolved Fe~(2+) promoted the reduction of NO_3~- at a neutral pH. NH_4~+ -N was the main reduction product, and the amount of consumed Fe~(2+) correlated positively with the amount of nitrate reduction. Moreover,with an initial concentration of 1 to 8 mmol·L~(-1) Fe~(2+) ,100 mg·L~(-1) of nitrate ( initial concentration) was reduced by 6 g·L~(-1) Fe~0 ; this process conformed to zero-order reaction kinetics. Electrochemical measurements and Xray powder diffraction ( XRD) results indicated that Fe~(2+) accelerated the electron transfer process by precipitating on the surface of iron,which in turn promoted the surface activity of Fe~0,and accelerated nitrate reduction. |
| 收录类别 | CSCD |
| CSCD记录号 | CSCD:5797088 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36536]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | 陈占,王海波,韩陆超,等. 溶液中Fe~(2+)强化Fe~0还原NO_3~-的机制[J]. 环境工程学报,2016,10(9):4940-4944. |
| APA | 陈占,王海波,韩陆超,胡学香,&赵丹.(2016).溶液中Fe~(2+)强化Fe~0还原NO_3~-的机制.环境工程学报,10(9),4940-4944. |
| MLA | 陈占,et al."溶液中Fe~(2+)强化Fe~0还原NO_3~-的机制".环境工程学报 10.9(2016):4940-4944. |
入库方式： OAI收割
来源：生态环境研究中心
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