Degradation of dimethyl phthalate through Fe(II)/peroxymonosulphate heightened by fulvic acid : efficiency and possible mechanism

Ferrous iron (Fe(II)) reacts with peroxymonosulphate (PMS) to form active oxidants that can degrade refractory organic pollutants. However, the conversion rate of Fe(III) to Fe(II) is slow, which limits its actual application. In the study, the effect of fulvic acid (FA) on the degradation of dimeth...

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Veröffentlicht in:Environmental technology. - 1993. - 44(2023), 12 vom: 01. Mai, Seite 1850-1862
1. Verfasser: Ding, Yi (VerfasserIn)
Weitere Verfasser: Zhang, Min, Zhou, Sijie, Xie, Linbei, Li, Ao, Wang, Ping
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Dimethyl phthalate (DMP) advanced oxidation technology fulvic acid (FA)/Fe(II)/PMS response surface methodology the complex of fulvic acid and Fe(II)/Fe(III) peroxymonosulfate 22047-43-4 dimethyl phthalate 08X7F5UDJM mehr... fulvic acid XII14C5FXV Ferric Compounds Peroxides Iron E1UOL152H7 Ferrous Compounds Environmental Pollutants
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520 |a Ferrous iron (Fe(II)) reacts with peroxymonosulphate (PMS) to form active oxidants that can degrade refractory organic pollutants. However, the conversion rate of Fe(III) to Fe(II) is slow, which limits its actual application. In the study, the effect of fulvic acid (FA) on the degradation of dimethyl phthalate (DMP) by Fe(II)/PMS was investigated. Moreover, the degradation process of DMP was predicted by the preliminary identification of active free radicals and intermediates. As expected, FA gave rise to a higher concentration of Fe(II) than that in Fe(II)/PMS to enhance the removal of DMP in Fe(II)/PMS system. The precipitate, involved in FA and iron, was an important composite to promote the degradation of DMP in the system. Also, the response surface methodology (RSM) was applied to model and optimize the degradation conditions of DMP. The highest removal efficiency (85.70%) was obtained at pH = 3.86, [PMS] = 0.96 mM, [FA] = 11.44 mg/L and [DMP] = 5 µM. The results of free radical quenching experiments and EPR showed that •OH and SO4•- were the main active radicals in this system. The degradation intermediates of DMP were monomethyl phthalate (MMP), phthalic acid and benzoic acid. Discoveries of this study had raised the current understanding of the application of FA keeping the cycles of Fe(II)/Fe(III) for peroxymonosulphate activation, which could afford valuable information for the degradation of organic pollutants by FA/Fe(II)/PMS 
650 4 |a Journal Article 
650 4 |a Dimethyl phthalate (DMP) 
650 4 |a advanced oxidation technology 
650 4 |a fulvic acid (FA)/Fe(II)/PMS 
650 4 |a response surface methodology 
650 4 |a the complex of fulvic acid and Fe(II)/Fe(III) 
650 7 |a peroxymonosulfate  |2 NLM 
650 7 |a 22047-43-4  |2 NLM 
650 7 |a dimethyl phthalate  |2 NLM 
650 7 |a 08X7F5UDJM  |2 NLM 
650 7 |a fulvic acid  |2 NLM 
650 7 |a XII14C5FXV  |2 NLM 
650 7 |a Ferric Compounds  |2 NLM 
650 7 |a Peroxides  |2 NLM 
650 7 |a Iron  |2 NLM 
650 7 |a E1UOL152H7  |2 NLM 
650 7 |a Ferrous Compounds  |2 NLM 
650 7 |a Environmental Pollutants  |2 NLM 
700 1 |a Zhang, Min  |e verfasserin  |4 aut 
700 1 |a Zhou, Sijie  |e verfasserin  |4 aut 
700 1 |a Xie, Linbei  |e verfasserin  |4 aut 
700 1 |a Li, Ao  |e verfasserin  |4 aut 
700 1 |a Wang, Ping  |e verfasserin  |4 aut 
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773 1 8 |g volume:44  |g year:2023  |g number:12  |g day:01  |g month:05  |g pages:1850-1862 
856 4 0 |u http://dx.doi.org/10.1080/09593330.2021.2014576  |3 Volltext 
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