Selective Photoelectrocatalytic Removal for Group-Targets of Phthalic Esters
The development of a selective removal method for group-targets of pollutants under the inhibition of nontoxic organic interferents is of great importance in environmental science. A novel TiO2 photoelectrode functionalized with dummy templates (PS-PAE-TiO2) is designed, exhibiting group-targeting selectivity for nine phthalate ester (PAE) analogs. In total, 90-99% of PAEs were removed from 30 μg L-1 in actual wastewater (chemical oxygen demand, 14.5 mg O2 L-1). The selectivity for PAEs originated from preferential enrichment close to the PS-PAE-TiO2 surface result in a twofold improvement in the apparent kinetic constant. The specific sites can be attributed to phenyl rings and o-ester carbonyl groups through the molecular recognition process. The intermediates were analyzed quantitatively, and a degradation pathway with lower toxicity was proposed, excluding ring-hydroxylated phthalates. Almost 100% of the estrogenic activity and acute aquatic toxicity were eliminated and the genotoxicity was reduced by 92.5%, which was about 40% higher than that at the nonselective photoanode. An enhanced removal at the PS-PAE-TiO2 photoanode with better economic benefits was confirmed, saving energy consumption by 2.5 kWh m-3 per order than that at the nonselective anode. The advanced removal method with group-targeting selective capability can provide a propagable strategy for the removal of a class of homologues from complex aqueous systems.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:55 |
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| Enthalten in: |
Environmental science & technology - 55(2021), 4 vom: 16. Feb., Seite 2618-2627 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Cai, Junzhuo [VerfasserIn] |
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| Links: |
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| Themen: |
2286E5R2KE |
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| Anmerkungen: |
Date Completed 23.04.2021 Date Revised 07.12.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1021/acs.est.0c07106 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM319680177 |
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| 245 | 1 | 0 | |a Selective Photoelectrocatalytic Removal for Group-Targets of Phthalic Esters |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The development of a selective removal method for group-targets of pollutants under the inhibition of nontoxic organic interferents is of great importance in environmental science. A novel TiO2 photoelectrode functionalized with dummy templates (PS-PAE-TiO2) is designed, exhibiting group-targeting selectivity for nine phthalate ester (PAE) analogs. In total, 90-99% of PAEs were removed from 30 μg L-1 in actual wastewater (chemical oxygen demand, 14.5 mg O2 L-1). The selectivity for PAEs originated from preferential enrichment close to the PS-PAE-TiO2 surface result in a twofold improvement in the apparent kinetic constant. The specific sites can be attributed to phenyl rings and o-ester carbonyl groups through the molecular recognition process. The intermediates were analyzed quantitatively, and a degradation pathway with lower toxicity was proposed, excluding ring-hydroxylated phthalates. Almost 100% of the estrogenic activity and acute aquatic toxicity were eliminated and the genotoxicity was reduced by 92.5%, which was about 40% higher than that at the nonselective photoanode. An enhanced removal at the PS-PAE-TiO2 photoanode with better economic benefits was confirmed, saving energy consumption by 2.5 kWh m-3 per order than that at the nonselective anode. The advanced removal method with group-targeting selective capability can provide a propagable strategy for the removal of a class of homologues from complex aqueous systems | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Environmental Pollutants |2 NLM | |
| 650 | 7 | |a Esters |2 NLM | |
| 650 | 7 | |a Phthalic Acids |2 NLM | |
| 650 | 7 | |a Waste Water |2 NLM | |
| 650 | 7 | |a Dibutyl Phthalate |2 NLM | |
| 650 | 7 | |a 2286E5R2KE |2 NLM | |
| 700 | 1 | |a Niu, Baoling |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Hongying |e verfasserin |4 aut | |
| 700 | 1 | |a Zhao, Guohua |e verfasserin |4 aut | |
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| 773 | 1 | 8 | |g volume:55 |g year:2021 |g number:4 |g day:16 |g month:02 |g pages:2618-2627 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acs.est.0c07106 |3 Volltext |
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