{"title":"壳聚糖/聚丙烯酰胺和壳聚糖/聚乳酸等磁性和非磁性聚合物纳米复合材料对阴离子染料的显著吸附作用","authors":"Parastoo Najafi, Mohammad Zabihi, Morteza Faghihi","doi":"10.1007/s11270-024-07165-7","DOIUrl":null,"url":null,"abstract":"<div><p>The adsorption of methylene orange (MO) ions from the aqueous solutions was investigated by using the polymeric adsorbents including chitosan/polyacrylamide (CS/PAM), chitosan/polylactic acid (CS/PLA) and their corresponding magnetic samples named CS/PAMF and CS/PLAF, respectively. FTIR, XRD and VSM findings showed the formation of polymer composite structure and besides that, the magnetization of adsorbents was done well. FESEM showed that the mesoporous dispersed nanoparticles was formed with the size of less than 50 nm. The operating parameters including pH, temperature, initial concentration of polluted solution and the dosage of adsorbents was also determined using batch adsorption process which the highest adsorption capacity occurred at a pH of about 7 and a temperature of 45 °C. The results revealed the good consistent between the data and Langmuir model while the maximum adsorption capacity was calculated to be about 769.23 and 303.03 mg/g for CS/PLA and CS/PAM, respectively. The kinetic studies also discovered the good agreement between the adsorption data and the pseudo second order equation which indicates the electrostatic adsorption. It was obvious that the performance of the polymeric samples decreased with magnetization of the adsorbents. The uptake capacity of adsorbents were evaluated in seven consecutive cycles. The results showed only a 10% decrease in the adsorption capacity of CS/PLA nanocomposite on seventh cycle of reusability which makes this adsorbent a candidate for industrial applications.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"235 6","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Remarkable Adsorption of Anionic Dye on the Supported Magnetic and Non-Magnetic Polymeric Nanocomposites Including Chitosan/Polyacrylamide and Chitosan/Polylactic Acid\",\"authors\":\"Parastoo Najafi, Mohammad Zabihi, Morteza Faghihi\",\"doi\":\"10.1007/s11270-024-07165-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The adsorption of methylene orange (MO) ions from the aqueous solutions was investigated by using the polymeric adsorbents including chitosan/polyacrylamide (CS/PAM), chitosan/polylactic acid (CS/PLA) and their corresponding magnetic samples named CS/PAMF and CS/PLAF, respectively. FTIR, XRD and VSM findings showed the formation of polymer composite structure and besides that, the magnetization of adsorbents was done well. FESEM showed that the mesoporous dispersed nanoparticles was formed with the size of less than 50 nm. The operating parameters including pH, temperature, initial concentration of polluted solution and the dosage of adsorbents was also determined using batch adsorption process which the highest adsorption capacity occurred at a pH of about 7 and a temperature of 45 °C. The results revealed the good consistent between the data and Langmuir model while the maximum adsorption capacity was calculated to be about 769.23 and 303.03 mg/g for CS/PLA and CS/PAM, respectively. The kinetic studies also discovered the good agreement between the adsorption data and the pseudo second order equation which indicates the electrostatic adsorption. It was obvious that the performance of the polymeric samples decreased with magnetization of the adsorbents. The uptake capacity of adsorbents were evaluated in seven consecutive cycles. The results showed only a 10% decrease in the adsorption capacity of CS/PLA nanocomposite on seventh cycle of reusability which makes this adsorbent a candidate for industrial applications.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"235 6\",\"pages\":\"\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-05-25\",\"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/s11270-024-07165-7\",\"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://link.springer.com/article/10.1007/s11270-024-07165-7","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}
Remarkable Adsorption of Anionic Dye on the Supported Magnetic and Non-Magnetic Polymeric Nanocomposites Including Chitosan/Polyacrylamide and Chitosan/Polylactic Acid
The adsorption of methylene orange (MO) ions from the aqueous solutions was investigated by using the polymeric adsorbents including chitosan/polyacrylamide (CS/PAM), chitosan/polylactic acid (CS/PLA) and their corresponding magnetic samples named CS/PAMF and CS/PLAF, respectively. FTIR, XRD and VSM findings showed the formation of polymer composite structure and besides that, the magnetization of adsorbents was done well. FESEM showed that the mesoporous dispersed nanoparticles was formed with the size of less than 50 nm. The operating parameters including pH, temperature, initial concentration of polluted solution and the dosage of adsorbents was also determined using batch adsorption process which the highest adsorption capacity occurred at a pH of about 7 and a temperature of 45 °C. The results revealed the good consistent between the data and Langmuir model while the maximum adsorption capacity was calculated to be about 769.23 and 303.03 mg/g for CS/PLA and CS/PAM, respectively. The kinetic studies also discovered the good agreement between the adsorption data and the pseudo second order equation which indicates the electrostatic adsorption. It was obvious that the performance of the polymeric samples decreased with magnetization of the adsorbents. The uptake capacity of adsorbents were evaluated in seven consecutive cycles. The results showed only a 10% decrease in the adsorption capacity of CS/PLA nanocomposite on seventh cycle of reusability which makes this adsorbent a candidate for industrial applications.
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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