期刊
ENVIRONMENTAL POLLUTION
卷 179, 期 -, 页码 53-60出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.04.004
关键词
Carbonate minerals; NANOFER 25S; Zero-valent iron nanoparticles; Nanoparticle transport; Surface charge
资金
- Austrian Federal Ministry of Agriculture, Forestry, Environment and Water
- National Science Foundation (NSF)
- Environmental Protection Agency (EPA) under NSF through the Center for Environmental Implications of Nanotechnology (CEINT) [EF-0830093]
The limited transport of nanoscale zero-valent iron (nZVI) in porous media is a major obstacle to its widespread application for in situ groundwater remediation. Previous studies on nZVI transport have mainly been carried out in quartz porous media. The effect of carbonate minerals, which often predominate in aquifers, has not been evaluated to date. This study assessed the influence of the carbonate minerals in porous media on the transport of polyacrylic acid modified nZVI (PAA-nZVI). Increasing the proportion of carbonate sand in the porous media resulted in less transport of PAA-nZVI. Predicted travel distances were reduced to a few centimeters in pure carbonate sand compared to approximately 1.6 m in quartz sand. Transport modeling showed that the attachment efficiency and deposition rate coefficient increased linearly with increasing proportion of carbonate sand. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据