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Influence of Alkalinity on the Efficiency and Catalyst Behavior of Photo‐Assisted Processes
Author(s) -
Merayo Noemí,
Hermosilla Daphne,
Jefferson Bruce,
Blanco Ángeles
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400320
Subject(s) - catalysis , photocatalysis , alkalinity , adsorption , chemistry , chemical engineering , process (computing) , pollutant , inorganic chemistry , organic chemistry , computer science , engineering , operating system
The influence of carbonates on TiO 2 photocatalysis and the photo‐Fenton process using Fe 0 as catalyst is unraveled. The aggregation behavior of each catalyst was monitored under different reaction conditions in order to assess the effect of carbonates on their performance. Carbonates drastically reduced the efficiency of photocatalysis because of aggregation of the TiO 2 catalyst, which led to the reduction of adsorbed pollutants. The addition of carbonates to the photo‐Fenton process did not produce this strong catalyst aggregation. Therefore, oxidation‐reduction reactions on the catalyst surface were not much reduced, and the efficiency of this process was not as strongly affected as that of TiO 2 photocatalysis.