Removal mechanism of persistent organic pollutants by Fe-C micro-electrolysis

The degradation of persistent organic pollutants (POPs) in the simulated wastewaters was investigated by Fe-C micro-electrolysis system. With phenanthrene (PHE) and 2,4-dichlorophenol (2,4-DCP) as target pollutants, different iron-carbon (Fe-C) micro-electrolysis systems have been established. The e...

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Veröffentlicht in:Environmental technology. - 1993. - 43(2022), 7 vom: 01. März, Seite 1050-1067
1. Verfasser: Ren, Dajun (VerfasserIn)
Weitere Verfasser: Huang, Yongwei, Li, Sheng, Wang, Zhaobo, Zhang, Shuqin, Zhang, Xiaoqing, Gong, Xiangyi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article 2,4-dichlorophenol Fe-C micro-electrolysis POPs degradation pathway phenanthrene Waste Water Water Pollutants, Chemical
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520 |a The degradation of persistent organic pollutants (POPs) in the simulated wastewaters was investigated by Fe-C micro-electrolysis system. With phenanthrene (PHE) and 2,4-dichlorophenol (2,4-DCP) as target pollutants, different iron-carbon (Fe-C) micro-electrolysis systems have been established. The effects of initial pH, Fe/C mass ratio, and intake air flow on the degradation and mineralization of PHE and 2,4-DCP were studied. At the initial pH of 5.0, Fe/C of 1.5:1, and an aeration flow rate of 1.5 L/min, after 120 min of reaction, the removal efficiency of FHE and COD was 94.3% and 73%, respectively. Under the conditions of initial pH is 3.0, Fe/C is 1:2, aeration flow rate of 1.5 L/min, and reaction time of 90 min, the best removal efficiency of 2,4-DCP can be obtained in the Fe-C micro-electrolysis system as 97% and COD removal efficiency can reach 76%. The results of kinetic studies show that the Fe-C micro-electrolysis process of PHE and 2,4-DCP follows pseudo-first-order kinetics. Commercial activated carbon (AC) was used for comparison under the same condition. The results indicated that the removal rate of organic pollutants and chemical oxygen demand (COD) of Fe-C micro-electrolysis were superior to that of AC. Analyze the structure of iron after reaction by SEM and XRD. The degradation pathway and mechanism for PHE and 2,4-DCP were proposed based on LC-MS analyses of treated wastewater 
650 4 |a Journal Article 
650 4 |a 2,4-dichlorophenol 
650 4 |a Fe-C micro-electrolysis 
650 4 |a POPs 
650 4 |a degradation pathway 
650 4 |a phenanthrene 
650 7 |a Waste Water  |2 NLM 
650 7 |a Water Pollutants, Chemical  |2 NLM 
700 1 |a Huang, Yongwei  |e verfasserin  |4 aut 
700 1 |a Li, Sheng  |e verfasserin  |4 aut 
700 1 |a Wang, Zhaobo  |e verfasserin  |4 aut 
700 1 |a Zhang, Shuqin  |e verfasserin  |4 aut 
700 1 |a Zhang, Xiaoqing  |e verfasserin  |4 aut 
700 1 |a Gong, Xiangyi  |e verfasserin  |4 aut 
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773 1 8 |g volume:43  |g year:2022  |g number:7  |g day:01  |g month:03  |g pages:1050-1067 
856 4 0 |u http://dx.doi.org/10.1080/09593330.2020.1814426  |3 Volltext 
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