Reactive and Hydraulic Behavior of Permeable Reactive Barriers Constituted by Fe⁰ and Granular Mixtures of Fe⁰/Pumice

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• 作者：Stefania Bilardi ; ^{stefania.bilardi@unirc.it" class="auth_mail" title="E-mail the corresponding author} ; Domenico Ielo ; Nicola Moraci ; Paolo S. Calabrò
• 关键词：Column tests ; nickel ; hydraulic conductivity ; statistical model
• 刊名：Procedia Engineering
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：158
• 期：Complete
• 页码：446-451
• 全文大小：321 K

文摘

The objective of the present work is to analyze, by means of column tests, the reactivity and hydraulic long term behavior of the zero valent iron (Fe⁰) and of a granular mixture Fe⁰/pumice, for the remediation, through the Permeable Reactive Barriers technology, of nickel contaminated groundwater. The reactive behavior was studied by analyzing nickel concentration data, through a first order kinetic model in order to determine the thickness of a hypothetical PRB and its variation over time.

The hydraulic conductivity behavior was studied through a numerical-statistical geometrical model developed by the authors. Expansive iron corrosion, precipitation of reaction products and gas formation are the processes considered.