{"title":"利用 S2O82-/Fe2O3-沸石催化剂与臭氧的协同作用降解水中的双氯芬酸","authors":"Yuanbo Song, Qingsong Xu, Mengyu Jin, Jiaqi Wang, Xiaoxia Wang, Cheng Hou, Zhenqi Wang, Dongsu Bi, Zheng Shen, Yalei Zhang","doi":"10.1007/s11270-024-07465-y","DOIUrl":null,"url":null,"abstract":"<p>A number of water pollution issues caused by antibiotic effluent must be addressed immediately. The persulfate (PS) method is a sort of advanced oxidation process that has the advantages of a quick reaction time and a high oxidation capacity. However, in order to be used efficiently for wastewater treatment, PS must be activated in water. In this study, PS was directly loaded onto the precursor to produce an oxidant that could destroy organic contaminants in water synergistically with O<sub>3</sub>. The effects of oxidant production circumstances, oxidant dosage, O<sub>3</sub> flow rate, PS dose, and pH value on diclofenac (DCF) degradation efficiency were investigated. The results showed that when the initial concentration of DCF was 100 mg/L, the O<sub>3</sub> flow rate was 0.4 m<sup>3</sup>/h, the pH value was 3, and the oxidant dosage was 1 g/L, the S<sub>2</sub>O<sub>8</sub><sup>2−</sup>/Fe<sub>2</sub>O<sub>3</sub>-zeolite/O<sub>3</sub> system basically completely degraded DCF within 60 min. The EPR and free radical quenching experiments were used to explore the synergistic degradation of DCF by the S<sub>2</sub>O<sub>8</sub><sup>2−</sup>/Fe<sub>2</sub>O<sub>3</sub>-zeolite/O<sub>3</sub> system. The three possible degradation pathways of DCF were also proposed based on analysis intermediate products analysis with LC–MS. This study identifies potential DCF breakdown pathways and offers a cost-effective and practical multiphase catalyst for the treatment of organic wastewater.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3><p>A new sulfur-containing catalyst produces both <sup>•</sup>OH and SO<sub>4</sub><sup>•−</sup> under the action of ozone for efficient removal of diclofenac.</p>\n","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Degradation of Diclofenac in Water Using S2O82−/Fe2O3-zeolite Catalyst Synergistic with Ozone\",\"authors\":\"Yuanbo Song, Qingsong Xu, Mengyu Jin, Jiaqi Wang, Xiaoxia Wang, Cheng Hou, Zhenqi Wang, Dongsu Bi, Zheng Shen, Yalei Zhang\",\"doi\":\"10.1007/s11270-024-07465-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A number of water pollution issues caused by antibiotic effluent must be addressed immediately. The persulfate (PS) method is a sort of advanced oxidation process that has the advantages of a quick reaction time and a high oxidation capacity. However, in order to be used efficiently for wastewater treatment, PS must be activated in water. In this study, PS was directly loaded onto the precursor to produce an oxidant that could destroy organic contaminants in water synergistically with O<sub>3</sub>. The effects of oxidant production circumstances, oxidant dosage, O<sub>3</sub> flow rate, PS dose, and pH value on diclofenac (DCF) degradation efficiency were investigated. The results showed that when the initial concentration of DCF was 100 mg/L, the O<sub>3</sub> flow rate was 0.4 m<sup>3</sup>/h, the pH value was 3, and the oxidant dosage was 1 g/L, the S<sub>2</sub>O<sub>8</sub><sup>2−</sup>/Fe<sub>2</sub>O<sub>3</sub>-zeolite/O<sub>3</sub> system basically completely degraded DCF within 60 min. The EPR and free radical quenching experiments were used to explore the synergistic degradation of DCF by the S<sub>2</sub>O<sub>8</sub><sup>2−</sup>/Fe<sub>2</sub>O<sub>3</sub>-zeolite/O<sub>3</sub> system. The three possible degradation pathways of DCF were also proposed based on analysis intermediate products analysis with LC–MS. This study identifies potential DCF breakdown pathways and offers a cost-effective and practical multiphase catalyst for the treatment of organic wastewater.</p><h3 data-test=\\\"abstract-sub-heading\\\">Graphical Abstract</h3><p>A new sulfur-containing catalyst produces both <sup>•</sup>OH and SO<sub>4</sub><sup>•−</sup> under the action of ozone for efficient removal of diclofenac.</p>\\n\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-08-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://doi.org/10.1007/s11270-024-07465-y\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://doi.org/10.1007/s11270-024-07465-y","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Degradation of Diclofenac in Water Using S2O82−/Fe2O3-zeolite Catalyst Synergistic with Ozone
A number of water pollution issues caused by antibiotic effluent must be addressed immediately. The persulfate (PS) method is a sort of advanced oxidation process that has the advantages of a quick reaction time and a high oxidation capacity. However, in order to be used efficiently for wastewater treatment, PS must be activated in water. In this study, PS was directly loaded onto the precursor to produce an oxidant that could destroy organic contaminants in water synergistically with O3. The effects of oxidant production circumstances, oxidant dosage, O3 flow rate, PS dose, and pH value on diclofenac (DCF) degradation efficiency were investigated. The results showed that when the initial concentration of DCF was 100 mg/L, the O3 flow rate was 0.4 m3/h, the pH value was 3, and the oxidant dosage was 1 g/L, the S2O82−/Fe2O3-zeolite/O3 system basically completely degraded DCF within 60 min. The EPR and free radical quenching experiments were used to explore the synergistic degradation of DCF by the S2O82−/Fe2O3-zeolite/O3 system. The three possible degradation pathways of DCF were also proposed based on analysis intermediate products analysis with LC–MS. This study identifies potential DCF breakdown pathways and offers a cost-effective and practical multiphase catalyst for the treatment of organic wastewater.
Graphical Abstract
A new sulfur-containing catalyst produces both •OH and SO4•− under the action of ozone for efficient removal of diclofenac.
期刊介绍：
Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation.
Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
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