Use of by-products from integrated steel plants as catalysts for the removal of trichloroethylene from groundwater

Rafael Gonzalez-Olmos, Alba Anfruns, Noelia V. Aguirre, Victoria Masaguer, Alejandro Concheso, Miguel A. Montes-Morán

Research output: Indexed journal article Articlepeer-review

8 Citations (Scopus)

Abstract

The removal of tricholoroethylene (TCE) has been investigated in this work through the Fenton-like process using different catalytic materials obtained from metallic by-products of the steel industry. These materials are the slag produced during the transformation of molten pig iron produced in a blast furnace into liquid steel (SLD), the dry particles (or dust) obtained from the bag filters installed in the coking installations to minimize diffuse emissions (POCA) and the dry particles obtained from the liquid sludge from the scrubber (LHA). This study aims to explore the potential of these materials for being used as permeable catalytic barriers to treat groundwater polluted with trichloroethylene (TCE). The wastes used as catalysts were chemically and physically characterized to determine their composition and porosity. The results of this study point out that among the different catalysts used LHA showed the highest catalytic activity to degrade TCE using hydrogen peroxide. Moreover, LHA was the most efficient catalyst using hydrogen peroxide due to its higher stoichiometric efficiency. It is thus concluded that LHA has a high potential to be combined with hydrogen peroxide in permeable catalytic barriers to remove organic compounds from groundwater.

Original languageEnglish
Pages (from-to)164-171
Number of pages8
JournalChemosphere
Volume213
DOIs
Publication statusPublished - Dec 2018

Keywords

  • Catalyst
  • ISCO
  • Trichloroethylene
  • Waste reuse

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