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Key role of Phyllanthus emblica L. fruit extract promotes ZVI/H2O2 process: rich titratable acid, suitable chelating ability, and antioxidant capacity.
- Source :
- Environmental Science & Pollution Research; Sep2024, Vol. 31 Issue 43, p55422-55436, 15p
- Publication Year :
- 2024
-
Abstract
- Phyllanthus emblica L. fruit extract (PFE) was introduced to improve ZVI/H<subscript>2</subscript>O<subscript>2</subscript> technology, and the efficiency and mechanism of PFE promoting ZVI/H<subscript>2</subscript>O<subscript>2</subscript> technology were explored. With the introduction of PFE, the Norfloxacin (NOR) removal rate and k<subscript>obs</subscript> of the process were improved by 41.17% and 5.08 times, respectively. In the ZVI/H<subscript>2</subscript>O<subscript>2</subscript>/PFE process, the degradation of NOR by the attack of ROS is the main pathway for decontamination and is dominated by the heterogeneous reaction on the catalyst surface. PFE contains 13.92 g/L titratable acid and has good complexing ability and antioxidant ability. The mechanism of PFE promoting ZVI/H<subscript>2</subscript>O<subscript>2</subscript> technology was based on lowering the pH, complemented by chelation and antioxidant capacity. With the introduction of PFE, the utilization rate of the reagent was significantly increased (7.56 times for ZVI and 3.21 times for H<subscript>2</subscript>O<subscript>2</subscript>), the applicable pH range was widened (6–9) and the iron sludge was reduced (32.80%). Meanwhile, the concept of UPR is proposed for the first time. The result is the key role to the selection of green promoters in the ZVI/H<subscript>2</subscript>O<subscript>2</subscript> process depends on the abundance of titratable acid, followed by a certain chelating ability and antioxidant capacity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 31
- Issue :
- 43
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 179770776
- Full Text :
- https://doi.org/10.1007/s11356-024-34644-5