摘要：

Permeable reactive barriers (PRB) are used for passive in-situ groundwater remediation. In the European research project PEREBAR the long-term behaviour of PRBs has been studied with special respect to reactive material properties and physico-chemical processes. Laboratory and field studies showed that the most efficient materials for the removal of uranium from contaminated groundwater are elemental iron and hydroxyapatite. Geochemical studies of alteration processes were conducted on these materials and on activated carbon used for the sorption of hydrocarbons, to analyse their long-term behaviour in PRB systems. Innovative materials for the selective sorption of uranium were developed. The concept of electrokinetic fences to support the performance of PRB systems was evaluated and proved to be the most promising approach in this respect. With its empirical work the project contributed to the knowledge and expertise in the field of passive groundwater remediation using permeable reactive barriers.

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