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FeSO 4 ·7H 2 O optimisation of earthed atomising corona discharge (Fe-EACD) a process for the pharmaceutical wastewater treatment.
- Source :
-
Environmental technology [Environ Technol] 2024 Jan; Vol. 45 (2), pp. 369-379. Date of Electronic Publication: 2022 Aug 15. - Publication Year :
- 2024
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Abstract
- Pharmaceutical residues can cause serious water pollution problems, harm human health and destroy the ecological balance. FeSO <subscript>4</subscript> ·7H <subscript>2</subscript> O optimisation of the earthed atomising corona discharge (Fe-EACD) process was used to dispose of pharmaceutical wastewater in this research. Experiments were analyzed by VI characteristic curves to optimise the electrode distance (20-50 mm) and wire electrode diameter (0.3-0.5 mm). The effects of discharging voltage (7-12 kV), time (0-54 min) and FeSO <subscript>4</subscript> dosage (0.2-1.2 g/L) were investigated using the response surface methodology (RSM). According to the RSM results, the best removal efficiency of COD (89.6%) was detected at the optimal discharging voltage of 12 kV, time of 42 min and Fe <superscript>2+</superscript> concentration of 0.4 g/L. The Fe-EACD process could work efficiently with BOD <subscript>5</subscript> /COD ratio moving to 0.49 in an acid environment. The kinetic analysis and mechanism study suggested that the Fe-EACD process was demonstrated well by the pseudo-first-order based on the correlation coefficient ( R <superscript>2</superscript> ). Active •OH producing in the EACD process is responsible for the COD removal and the FeSO <subscript>4</subscript> ·7H <subscript>2</subscript> O as a catalyst can promote the formation of active hydroxyl. In other words, EACD with Fe <superscript>2+</superscript> optimisation was an economic and feasible process for pharmaceutical wastewater treatment.
- Subjects :
- Humans
Kinetics
Electrodes
Pharmaceutical Preparations
Water Purification methods
Subjects
Details
- Language :
- English
- ISSN :
- 1479-487X
- Volume :
- 45
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Environmental technology
- Publication Type :
- Academic Journal
- Accession number :
- 35969497
- Full Text :
- https://doi.org/10.1080/09593330.2022.2111279