{"title":"Bio Fabrication of MgO Decorated Spinel Magnetite Nanoparticles for Efficient Removal of AO Dye: Isotherm, Kinetic, and Thermodynamic Study","authors":"Aditya Narayan Tiwari, Kavita Tapadia, Chandrakant Thakur","doi":"10.1007/s11270-024-07145-x","DOIUrl":null,"url":null,"abstract":"<p>This work describes a simple technique for producing bio-synthesized Magnesium oxide modified magnetite nanoparticles (MgO@MNPs) for the removal of AO dyes using Almond (<i>Terminalia catappa</i>) leaf extract (ALE). ALE is employed as capping, stabilizing, and reducing agent. This work presents an investigation of the removal of dye using nanoparticles. In this study synthesized nanoparticles get characterized using various analytical techniques such as UV–Vis, XRD, FT-IR, TGA, SEM, EDX, and VSM. The adsorption conditions were tuned for the maximal removal of AO dyes by altering many physicochemical factors, including pH (8.0), initial concentration of AO dye (30 mg/L), MgO@MNPs dosage (8 mg), contact time (8 min), and reaction temperature (298 K). The results of isotherm study indicated that Langmuir model adequately described the adsorption process and effectively removed the dye with a high adsorption capacity (q<sub>max</sub>) 526.31 mg/g. Additionally, the study evaluated the kinetic and thermodynamic aspects of the adsorption process. Moreover, the adsorption process was found to be spontaneous, exothermic, and followed a pseudo-second-order kinetic model. HCl was found to be an effective desorbing agent in the desorption experiment. The adsorbent could be reused for seven cycles effectively with at least 96% removal of AO dye. The comparison table provided in this work further highlights the effectiveness of the present study. Overall, this study offers a promising approach for the efficient removal of AO dye from wastewater, with potential for practical applications in the field of wastewater treatment.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\n","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-05-27","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/s11270-024-07145-x","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
This work describes a simple technique for producing bio-synthesized Magnesium oxide modified magnetite nanoparticles (MgO@MNPs) for the removal of AO dyes using Almond (Terminalia catappa) leaf extract (ALE). ALE is employed as capping, stabilizing, and reducing agent. This work presents an investigation of the removal of dye using nanoparticles. In this study synthesized nanoparticles get characterized using various analytical techniques such as UV–Vis, XRD, FT-IR, TGA, SEM, EDX, and VSM. The adsorption conditions were tuned for the maximal removal of AO dyes by altering many physicochemical factors, including pH (8.0), initial concentration of AO dye (30 mg/L), MgO@MNPs dosage (8 mg), contact time (8 min), and reaction temperature (298 K). The results of isotherm study indicated that Langmuir model adequately described the adsorption process and effectively removed the dye with a high adsorption capacity (qmax) 526.31 mg/g. Additionally, the study evaluated the kinetic and thermodynamic aspects of the adsorption process. Moreover, the adsorption process was found to be spontaneous, exothermic, and followed a pseudo-second-order kinetic model. HCl was found to be an effective desorbing agent in the desorption experiment. The adsorbent could be reused for seven cycles effectively with at least 96% removal of AO dye. The comparison table provided in this work further highlights the effectiveness of the present study. Overall, this study offers a promising approach for the efficient removal of AO dye from wastewater, with potential for practical applications in the field of wastewater treatment.
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.
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