Discontinuous Permeable Adsorptive Barrier Design and Cost Analysis: A Methodological Approach to Optimisation

Environ Sci Pollut Res Int. 2018 Sep;25(27):26793-26800. doi: 10.1007/s11356-017-0220-y. Epub 2017 Sep 19.

Abstract

The following paper presents a method to optimise a discontinuous permeable adsorptive barrier (PAB-D). This method is based on the comparison of different PAB-D configurations obtained by changing some of the main PAB-D design parameters. In particular, the well diameters, the distance between two consecutive passive wells and the distance between two consecutive well lines were varied, and a cost analysis for each configuration was carried out in order to define the best performing and most cost-effective PAB-D configuration. As a case study, a benzene-contaminated aquifer located in an urban area in the north of Naples (Italy) was considered. The PAB-D configuration with a well diameter of 0.8 m resulted the best optimised layout in terms of performance and cost-effectiveness. Moreover, in order to identify the best configuration for the remediation of the aquifer studied, a comparison with a continuous permeable adsorptive barrier (PAB-C) was added. In particular, this showed a 40% reduction of the total remediation costs by using the optimised PAB-D.

Keywords: Adsorption; Benzene; Design and cost analysis; Design optimisation; Groundwater remediation; Permeable adsorptive barrier.

MeSH terms

  • Adsorption
  • Benzene / chemistry*
  • Costs and Cost Analysis
  • Environmental Restoration and Remediation / economics
  • Environmental Restoration and Remediation / methods*
  • Groundwater / chemistry
  • Italy
  • Water Pollutants, Chemical / chemistry*
  • Water Wells

Substances

  • Water Pollutants, Chemical
  • Benzene