{"title":"Banana pseudo-stem supported polymeric adsorbent material for the treatment of wastewater contaminated with dyes","authors":"S. Shruthi, B. Vishalakshi","doi":"10.1007/s00289-024-05517-1","DOIUrl":null,"url":null,"abstract":"<div><p>A polymer adsorbent material has been developed via microwave-assisted free radical copolymerization of 4-acryloylmorpholine (AcM) and N, N’-methylene bisacrylamide (MBA) in the presence of banana pseudo-stem (BPS) as the supporting material. Grafting of poly (AcM-co-MBA) occurs on polysaccharide units of BPS, resulting in a mechanically stable hydrogel, which is characterized by FTIR, TGA, SEM, EDS, XRD, and Zeta potential measurement techniques. The swelling behavior of adsorbent material in aqueous buffer solutions of pH 4.0, 7.1, and 9.0 was studied. The swelling process is observed to be governed by second-order kinetics, and the water transport appears to be non-Fickian. The material was evaluated for adsorptive removal of dyes from the aqueous solution. Maximum adsorption of 73.69 mgg<sup>−1</sup> and 67.70 mgg<sup>−1</sup> of methylene blue (MB) and crystal violet (CV), respectively, was observed. Kinetic and isotherm studies indicated the adsorption to be a pseudo-second-order kinetic process, fitting well with the Freundlich adsorption isotherm model. Further, the adsorption was found to be a spontaneous and endothermic process as indicated by thermodynamic studies. Nearly complete desorption of dyes was observed in acidic medium, indicating the potential reuse of this material as an adsorbent for the treatment of effluents contaminated with dyes.</p></div>","PeriodicalId":737,"journal":{"name":"Polymer Bulletin","volume":"82 1","pages":"41 - 67"},"PeriodicalIF":3.1000,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Bulletin","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s00289-024-05517-1","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
A polymer adsorbent material has been developed via microwave-assisted free radical copolymerization of 4-acryloylmorpholine (AcM) and N, N’-methylene bisacrylamide (MBA) in the presence of banana pseudo-stem (BPS) as the supporting material. Grafting of poly (AcM-co-MBA) occurs on polysaccharide units of BPS, resulting in a mechanically stable hydrogel, which is characterized by FTIR, TGA, SEM, EDS, XRD, and Zeta potential measurement techniques. The swelling behavior of adsorbent material in aqueous buffer solutions of pH 4.0, 7.1, and 9.0 was studied. The swelling process is observed to be governed by second-order kinetics, and the water transport appears to be non-Fickian. The material was evaluated for adsorptive removal of dyes from the aqueous solution. Maximum adsorption of 73.69 mgg−1 and 67.70 mgg−1 of methylene blue (MB) and crystal violet (CV), respectively, was observed. Kinetic and isotherm studies indicated the adsorption to be a pseudo-second-order kinetic process, fitting well with the Freundlich adsorption isotherm model. Further, the adsorption was found to be a spontaneous and endothermic process as indicated by thermodynamic studies. Nearly complete desorption of dyes was observed in acidic medium, indicating the potential reuse of this material as an adsorbent for the treatment of effluents contaminated with dyes.
期刊介绍：
"Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad.
"Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."
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