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Heterogeneous Fenton Degradation of Organic Pollutants in Water Enhanced by Combining Iron‐type Layered Double Hydroxide and Sulfate
Author(s) -
Fuku Kojiro,
Kanai Honami,
Todoroki Masanobu,
Mishima Nanako,
Akagi Taisei,
Kamegawa Takashi,
Ikenaga Naoki
Publication year - 2021
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202100375
Subject(s) - mineralization (soil science) , pollutant , chemistry , phenol , hydroxide , sulfate , environmental chemistry , degradation (telecommunications) , catalysis , inorganic chemistry , pollution , environmental pollution , water treatment , environmental engineering , organic chemistry , environmental science , environmental protection , nitrogen , telecommunications , ecology , computer science , biology
Water pollution derived from organic pollutants is one of the global environmental problems. The Fenton reaction using Fe 2+ as a homogeneous catalyst has been known as one of clean methods for oxidative degradation of organic pollutants. Here, a layered double hydroxide (Fe 2+ Al 3+ ‐LDH) containing Fe 2+ and Al 3+ in the structure was used to develop a “heterogeneous” Fenton catalyst capable of mineralizing organic pollutants. We found that sulfate ion (SO 4 2− ) immobilized on the Fe 2+ Al 3+ ‐LDH significantly facilitated oxidative degradation (mineralization) of phenol as a model compound of water pollutants to carbon dioxide (CO 2 ) in a heterogeneous Fenton process. The phenol conversion and mineralization efficiency to CO 2 reached >99% and ca . 50%, respectively, even with a reaction time of only 60 min.