Degradation of phenol using mill scale as a Fenton‐type catalyst

Abstract

The oxidation of phenol using mill scale (waste material produced during the hot rolling of steel) as iron source in a type Fenton process was investigated in this work. The mill scale was characterized by XRF, FT-IR, XRD and SEM. The oxidation tests were carried at 25°C and atmospheric pressure, controlling the pH to 3.7. The phenol conversion and total organic carbon (TOC) removal as a function of catalyst loading (300-1000 mg/L) and phenol concentration (47 and 100 mg/L) were evaluated. The mill scale achieved high conversion of phenol (between 60.8 ± 2.2 and 94.5 ± 2.5%) and mineralization to CO 2 (between 38.9 ± 1.2 and 55.6 ± 2.5%) after 4-h reaction. The mill scale showed a good catalytic performance, even after three cycles of reaction. Therefore, utilizing mill scale as a catalyst of the Fenton process is an alternative to the use of waste in the steel industry.

A type II heterojunction α-Fe2O3/g-C3N4 for the heterogeneous photo-Fenton degradation of phenol

“…It also can convert into a phenoxy radical in molecular structure due to the loss of electronic behavior, which will result in mutations of DNA or RNA and cancer in chromosome sites. 4 Therefore, how to degrade phenol has received much attention in the field of organic wastewater remediation. Many treatments have been established, including biological, physical and chemical methods.…”

Synthesis and Characterization of New Catalysts Grains Based on Iron(Oxy)Hydroxides supported on Zirconium for the Degradation of 4-Nitrophenol in Aqueous Solution

“…Phenolic compounds in wastewaters can be removed by various physical and chemical techniques [8,9]. Therefore, the complete degradation and/or mineralization of these chemicals via effective and low-cost processes is a challenging task [10][11][12][13][14]. The treatment of water polluted by organic compounds via oxidation processes is an effective and low cost solution.…”

Catalytic Oxidation of Ponceau 4R in Aqueous Solution using Iron-impregnated Al-pillared Bentonite: Optimization of the Process

“…Water pollutants are varied in nature, including organic treatment, and later were widely studied for the treatment of wastewaters. The AOPs involve the generation of hydroxyl radicals (•OH), which can degrade most refractory organic compounds or increase wastewater biodegradability, as a treatment prior to an ensuing biological treatment [3,4]. Among the metals that are able to activate H2O2 and produce hydroxyl radicals in water, iron is the most frequently used.…”