Performance and Economic Assessment of the Treatment of Phenol with TiO2 Photocatalysis, Photo-Fenton, Biological Aerated Filter, and Wetland Reactors

Abstract:

The performance and economic cost of the removal of phenol with TiO<inf>2</inf> photocatalysis, photo-Fenton reactions, biological aerated filter (BAF), and constructed wetland (CW) reactors has been studied. The BAF achieved complete removal with a maximum phenol concentration of 200 mg·L⁻¹. The BAF-CW combination provided a phenol-free effluent with a maximum phenol concentration of 650 mg·L⁻¹. In both cases, a complete detoxification of the treated water was achieved at the concentrations studied. The efficiency of TiO<inf>2</inf> photocatalysis was limited to concentrations below 50 mg L⁻¹ to minimize removal reduction and toxicity of the intermediates. Photo-Fenton was more efficient, but also more expensive because of the high cost of H<inf>2</inf>O<inf>2</inf>. The photo-Fenton-BAF combination is proposed to be the most suitable one.

Año de publicación:

2017

Keywords:

• Biological aerated filter
• TiO photocatalysis 2
• photo-Fenton
• Phenol
• Constructed wetland
• TiO2 photocatalysis

Fuente:

scopus