{"title":"Catalytic Degradation of Acid Orange 7 Using CoFe2O4@Biochar Heterogeneous Catalytic Ozonation Process in Aqueous Solutions","authors":"Fatemeh Bazipour, Sahand Jorfi, Heydar Maleki, AliAkbar Babaei","doi":"10.1007/s11270-024-07625-0","DOIUrl":null,"url":null,"abstract":"<div><p>The aim of this study is to propose a new catalyst for catalytic ozonation of acid orange 7 (AO7) dye in aqueous solutions. CoFe<sub>2</sub>O<sub>4</sub>@Biochar catalyst was synthesized, prepared, and used in a heterogeneous catalytic ozonation process (COP) for AO7 removal. The characteristics of synthetized nanoparticles were investigated through the following equipment: x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), fourier transform infrared (FTIR) spectroscopy, vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), Brunauer, Emmett and Teller (BET) and energy dispersive x-ray (EDX) analyses. The results showed that the process offered a sufficient efficiency for removal of 150 and 200 mg/L concentrations of AO7. Moreover, CO<sub>3</sub><sup>2-</sup>, NO<sub>3</sub><sup>-</sup>, Cl<sup>-</sup> and PO<sub>4</sub><sup>3-</sup> anions had a decreasing effect on the efficiency. The results of the scavenger experiments showed that the hydroxyl radical and ozone oxidants played the primary role for decomposition of the pollutants. The removal efficiency of total organic carbon (TOC) was 99% after 120 min by COP which was 44% more than the Single Ozonation Process (SOP). COP also caused the removal of chemical oxygen demand (COD) by 92% after 360 min. Based on the results, the COP with CoFe<sub>2</sub>O<sub>4</sub>@Biochar catalyst can be an effective and efficient process for treating textile wastewaters.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"235 12","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-11-18","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://link.springer.com/article/10.1007/s11270-024-07625-0","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}
引用次数: 0
Abstract
The aim of this study is to propose a new catalyst for catalytic ozonation of acid orange 7 (AO7) dye in aqueous solutions. CoFe2O4@Biochar catalyst was synthesized, prepared, and used in a heterogeneous catalytic ozonation process (COP) for AO7 removal. The characteristics of synthetized nanoparticles were investigated through the following equipment: x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), fourier transform infrared (FTIR) spectroscopy, vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), Brunauer, Emmett and Teller (BET) and energy dispersive x-ray (EDX) analyses. The results showed that the process offered a sufficient efficiency for removal of 150 and 200 mg/L concentrations of AO7. Moreover, CO32-, NO3-, Cl- and PO43- anions had a decreasing effect on the efficiency. The results of the scavenger experiments showed that the hydroxyl radical and ozone oxidants played the primary role for decomposition of the pollutants. The removal efficiency of total organic carbon (TOC) was 99% after 120 min by COP which was 44% more than the Single Ozonation Process (SOP). COP also caused the removal of chemical oxygen demand (COD) by 92% after 360 min. Based on the results, the COP with CoFe2O4@Biochar catalyst can be an effective and efficient process for treating textile wastewaters.
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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