Wet hydrogen peroxide catalytic oxidation (WHPCO) of organic waste in agro-food and industrial streams

Abstract

This review discusses the use of iron-or copper-based solid catalysts in the wet oxidation using H 2 O 2 as oxidant of organic molecules present in agro-food and industrial waste aqueous streams. After an introduction on the advantages and limits of using wet hydrogen peroxide catalytic oxidation (WHPCO) as opposite to wet air catalytic oxidation (WACO), the contribution shortly analyses recent results in the field in order to evidence new trends and open issues. More specific examples discussed regard the performances of Fe/zeolite and Fe-containing pillared clays in the oxidation of selected molecules (p-coumaric acid, propionic acid) of relevance for the treatment of organic waste from agro-food production (with reference especially to olive oil milling wastewater). The application of WHPCO in the treatment of complex effluents from electronic industry is also shortly discussed.

Interfacial mechanisms of heterogeneous Fenton reactions catalyzed by iron-based materials: A review

“…Different from other published reviews, which have focused on the preparation and performance of the catalysts (Dhakshinamoorthy et al, 2012;Garrido-Ramirez et al, 2010;Navalon et al, 2010a;Nidheesh, 2015;Perathoner and Centi, 2005), this article reviews the fundamental interfacial mechanisms of the heterogeneous Fenton reactions catalyzed by iron-based materials, which may also provide insights for the enhancement of heterogeneous Fenton reactions with additional energy, such as ultraviolet and visible light (UV-Vis), electricity, and ultrasound.…”

The activity and selectivity of catalytic peroxide oxidation of chlorophenols over Cu–Al hydrotalcite/clay composite

“…Various abatement techniques including biological, thermal, and chemical treatments have been developed in the last few years for the detoxification of organic pollutants [2,3]. Among these techniques, catalytic wet peroxide oxidation (CWPO) appears to be a promising field of study, which has been reported to be effective for the near ambient degradation of soluble organic pollutants, because it can provide a nearly complete degradation [4][5][6][7][8][9].…”

Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

“…Compared to these purification technologies, catalytic wet peroxide oxidation (CWPO) has shown excellent removal efficiency for several organic compounds, such as phenol, carboxylic acids and industrial effluents [26,27,28,29,30,31]. CWPO was adapted from a classical Fenton process [32], which has been referred to as an economical alternative to wastewater treatment techniques [33] because it requires only basic equipment and operates at ambient-like pressure and temperature [34,35].…”