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Photo‐Fenton‐peroxide process using FE (II)‐embedded composites based on activated carbon: Characterization of catalytic tests
Author(s) -
Secula Marius S.,
Vajda Andreea,
Cag Benoît,
Warmont Fabienne,
Mamaliga Ioan
Publication year - 2020
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23662
Subject(s) - activated carbon , catalysis , indigo carmine , hydrogen peroxide , aqueous solution , adsorption , degradation (telecommunications) , thermogravimetric analysis , desorption , chemistry , materials science , ozone , decomposition , chemical engineering , nuclear chemistry , organic chemistry , telecommunications , computer science , engineering
Abstract Cost‐efficient Fenton‐like catalysts for the removal of organic molecules in aqueous solutions were elaborated by a simple process. Porous activated carbons (ACs) were directly impregnated with a precursor solution using the wet impregnation method. Their efficiency as Fenton‐like catalysts was studied. Photo‐Fenton tests were performed to establish the performance of the prepared Fe‐impregnated activated carbons in relation to the degradation of an organic pollutant (Indigo Carmine) model in aqueous solution, under different conditions. Photo‐catalytic tests were carried out by means of a laboratory photo‐reactor (UV‐Consulting Peschl). The influence of several parameters such as solution pH value, initial concentration of the model pollutant, and hydrogen peroxide dose on the process performance was investigated. The ACs and prepared catalysts were characterized by nitrogen adsorption‐desorption isotherms at 77 K, SEM, and thermogravimetric analyses. The total Fe content of the synthesized composites was estimated by the phenanthroline method using UV‐vis spectrophotometry. The results show an increase in the degradation rate when the heterogeneous photo‐Fenton process is conducted with an ozone generating UV lamp.