Reactive Transport Modeling of ZVI Column Experiments for Nickel Remediation

被引：25

作者：

Bilardi, Stefania ^{[1
]}

Amos, Richard T. ^{[2
]}

Blowes, David W. ^{[2
]}

Calabro, Paolo S. ^{[1
]}

Moraci, Nicola ^{[1
]}

机构：

[1] Mediterranean Univ Reggio Calabria, Fac Engn, Dept Mat & Mech, I-89122 Reggio Di Calabria, RC, Italy

[2] Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON N2L 3G1, Canada

来源：

GROUND WATER MONITORING AND REMEDIATION | 2013年 / 33卷 / 01期

关键词：

LONG-TERM PERFORMANCE; GRANULAR IRON; IN-SITU; CORROSION;

D O I：

10.1111/j.1745-6592.2012.01417.x

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

MIN3P, a multicomponent reactive transport model for variably saturated porous media, is used to simulate the outputs of column tests carried out using zero valent iron (ZVI) for nickel contaminated groundwater remediation. The objective of this study is to investigate the main chemical reactions involved in contaminant removal and the main causes of the reactivity decline of ZVI over time. According to the results of the model the major causes of ZVI reactivity loss is identified in the mineral precipitation of -FeOOH on iron surface that probably caused ZVI passivation and led to a decline of the electron transfer rate. An existing empirical relationship between mineral precipitation and the reactivity loss of ZVI, included in the model, reproduced the changes in nickel removal observed during different laboratory column tests.

引用

页码：97 / 104

页数：8

共 22 条

[1]

[Anonymous], 1991, EPA600391021 ENV RES

[2]

Ball J.W., 1991, 91183 DEL GEOL SURV

[3] Treatment of inorganic contaminants using permeable reactive barriers [J].