Application of pillared raw clay-base catalysts and natural solar radiation for water decontamination by the photo-Fenton process

Abstract This study presents a novel application of the heterogeneous solar photo-Fenton process using an iron-pillared clay (Fe-PILC) as a photocatalyst under natural sunlight. The Fe-PILC is characterized by thermogravimetric analysis, EDXRF, SEM and nitrogen adsorption-desorption isotherms. The solar photo-reactor consists of a tubular borosilicate tube with a compound parabolic collector (CPC) and two different materials as reflective material for performance comparison. Phenol is used as model pollutant. The catalytic tests are monitored by the concentration of the pollutant, intermediates and the iron leaching, as well as the accumulated energy during the reaction time. Complementary catalytic tests allowed to establish the influence of parallel processes that could contribute to phenol removal. Experimental data proved that the Fe-PILC is active as heterogenous catalyst in photo-Fenton like processes promoted by natural solar radiation. The catalyst showed good stability in the process and allowed a 99%+ removal of the pollutant and its intermediates. Fenton, photolysis and adsorption do not contribute significantly to phenol removal. Finally, when comparing different reflective materials in the CPC, the aluminium sheet proved to be more efficient than the polyester film metallized with aluminium.

• Publication year

  2020

• Venue

  Separation and Purification Technology

• Publication date

  2020-12-03

• Fields of study

  Materials Science, Chemistry, Environmental Science

• Identifiers
  DOI 10.1016/j.seppur.2020.118167
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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