Reduction of nitrate in water by nanoscale zero-valent iron particles and zeolite
In this study, nitrate reduction using laboratory synthesized nanoscale zero-valent iron (NZVI) was discussed. On the other side, denitrification of nitrate with Fe0 nanoparticles combined with zeolite was also investigated. The effects of iron-to-nitrate ratio and the affiliation of zeolite were studied systemically. The results show that nitrate with the concentration of 80 mg/L was mostly removed within 60 minutes, and the endproducts mainly are ammonia with Fe0 but little ammonia with Fe0 and zeolite. The role of nanoscale iron in the nitrate reduction should be take part in two major processes: (a) directly participate in the redox reaction; and (b) adsorption of nitrate. And the role of zeolite in nitrate reduction was only the absorption ammonia.
Fe0 Zeolite Nitrate Denitrification
Xu Chen Tielong Li
College of Environmental Science and Engineering,Nankai University Tianjin 300071,P.R.China Departme College of Environmental Science and Engineering,Nankai University Tianjin 300071,P.R.China
国际会议
北京
英文
1-3
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）