Synergistic oxidation and adsorption of arsenic(III) by epigallocatechin gallate activated iron(III) peroxydisulfate system
Dun Fu, Yongqing Wang, Tong Wu, Sheng He, Shuxin Han, Mengting Zhu · 2026
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Description
Dun Fu and five colleagues pair a green tea compound with iron chemistry in 2026 to strip toxic arsenic(III) from groundwater. Mining regions face rising arsenic risk, and the trivalent form is both more poisonous and harder to remove than arsenic(V). Their system activates peroxydisulfate, a strong oxidant, using iron(III) plus epigallocatechin gallate, or EGCG.
The tea compound grabs iron and speeds its cycling between oxidation states, which fires off reactive oxygen species that convert arsenic(III) to arsenic(V) for capture on iron aggregates. Removal hit 98.2 percent within 10 minutes, an 84.4 percent improvement over the iron system without EGCG. Treated water met China's national limit in their tests.
Catalog record
| CREATOR | Dun Fu, Yongqing Wang, Tong Wu, Sheng He, Shuxin Han, Mengting Zhu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 32128 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |