Study on the reductive transformation of nitrite by nanoscale zero-Valent iron particles synergizea with ultrasonic technology

摘要：

This research was focused on the removal of nitrite by nanoscale zero-valent iron(NZVI).NZVI particles were prepared by liquid phase reduction method using NaBH4 as reducing agent.and were employed for the dentitrification of nitrite in simulated water samples.Ultrasonic technology was used to enhance the denitrification efficiency.Kinetic studies revealed that the denitrification process was a pseudo first-order reaction with respect to nitrite concentration under the given experimental conditions.The factors affecting the denitrification efficiency such as ultrasonic time.NZVI dosage.initial nitrite concentration and solution PH have been investigated.The reaction rate constant(kobs) was found to be increased with the increase of NZVI dosage.but the reverse action was observed for pH effect.

关键词： nanoscale zero-valent-iron ultrasound nitrite denitrification

作者: LIANG Feng GUO Yan-hui ZHU Jun ZHOU Su SHAO Xiao-jing FAN Jing

作者单位: School of Chemistry and Environmental Science,Henan Key Laboratory for Environmental Pollution Contr A inxiang Environmental Monitoring Station, Xinxiang 453000, China

会议类型: 国际会议

会议名称: The International Conference on Advances in Chemical Technologies for Water and Wastewater Treatment(2008年化学技术对水及废水处理国际研讨会)

会议地点: 西安

会议语种:英文

页码: 695-700

在线出版日期: 2008-05-15（万方平台首次上网日期，不代表论文的发表时间）