{"title":"用于处理水溶液中化学和生物污染物的黄腐酸柿树叶的合成、表征和应用","authors":"Sanjana Tewari, Neha Singh, Jaya Dwivedi, Nalini Sankararamakrishnan","doi":"10.1007/s10450-024-00470-x","DOIUrl":null,"url":null,"abstract":"<div><p>In this research, a one-step xanthation process was used to synthesize biosorbents from persimmon leaves (<i>Diospyros kaki</i>). The resulting biosorbents, referred to as MPM, exhibited high sorption capacities for Hexavalent chromium and Cd(II) at different pH values. Specifically, at pH 3, the Langmuir maximum adsorption capacity for Cr(VI)-MPM was determined to be 710 mg/g, while at pH 7, it was 622 mg/g for Cd(II)-MPM systems. The adsorption kinetics of both the metal ions followed the pseudo-2nd-order model, with R<sup>2</sup> values close to 1 (0.99). Through FT-IR and XPS studies, it was determined that ion exchange, surface complexation, and chelation were the primary mechanisms responsible for removing the analytes from water using MPM as sorbent. The presence of the -CS<sub>2</sub>-Na group in MPM played a crucial role in these removal mechanisms. Additionally, MPM displayed notable antibacterial efficacy against <i>S. aureus</i> and <i>E. coli</i>. Considering its rapid kinetics, wide pH range applicability, impressive sorption capacity, recyclability, and effective antibacterial properties, MPM proves to be a highly suitable adsorbent for removing Hexavalent chromium and Cd(II) from industrial wastewater.</p></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"30 6","pages":"769 - 782"},"PeriodicalIF":3.0000,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis, characterization and application of xanthated Diospyros kaki (persimmon) leaves for the treatment of chemical and biological contaminants in aqueous solutions\",\"authors\":\"Sanjana Tewari, Neha Singh, Jaya Dwivedi, Nalini Sankararamakrishnan\",\"doi\":\"10.1007/s10450-024-00470-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this research, a one-step xanthation process was used to synthesize biosorbents from persimmon leaves (<i>Diospyros kaki</i>). The resulting biosorbents, referred to as MPM, exhibited high sorption capacities for Hexavalent chromium and Cd(II) at different pH values. Specifically, at pH 3, the Langmuir maximum adsorption capacity for Cr(VI)-MPM was determined to be 710 mg/g, while at pH 7, it was 622 mg/g for Cd(II)-MPM systems. The adsorption kinetics of both the metal ions followed the pseudo-2nd-order model, with R<sup>2</sup> values close to 1 (0.99). Through FT-IR and XPS studies, it was determined that ion exchange, surface complexation, and chelation were the primary mechanisms responsible for removing the analytes from water using MPM as sorbent. The presence of the -CS<sub>2</sub>-Na group in MPM played a crucial role in these removal mechanisms. Additionally, MPM displayed notable antibacterial efficacy against <i>S. aureus</i> and <i>E. coli</i>. Considering its rapid kinetics, wide pH range applicability, impressive sorption capacity, recyclability, and effective antibacterial properties, MPM proves to be a highly suitable adsorbent for removing Hexavalent chromium and Cd(II) from industrial wastewater.</p></div>\",\"PeriodicalId\":458,\"journal\":{\"name\":\"Adsorption\",\"volume\":\"30 6\",\"pages\":\"769 - 782\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-04-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Adsorption\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10450-024-00470-x\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Adsorption","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10450-024-00470-x","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Synthesis, characterization and application of xanthated Diospyros kaki (persimmon) leaves for the treatment of chemical and biological contaminants in aqueous solutions
In this research, a one-step xanthation process was used to synthesize biosorbents from persimmon leaves (Diospyros kaki). The resulting biosorbents, referred to as MPM, exhibited high sorption capacities for Hexavalent chromium and Cd(II) at different pH values. Specifically, at pH 3, the Langmuir maximum adsorption capacity for Cr(VI)-MPM was determined to be 710 mg/g, while at pH 7, it was 622 mg/g for Cd(II)-MPM systems. The adsorption kinetics of both the metal ions followed the pseudo-2nd-order model, with R2 values close to 1 (0.99). Through FT-IR and XPS studies, it was determined that ion exchange, surface complexation, and chelation were the primary mechanisms responsible for removing the analytes from water using MPM as sorbent. The presence of the -CS2-Na group in MPM played a crucial role in these removal mechanisms. Additionally, MPM displayed notable antibacterial efficacy against S. aureus and E. coli. Considering its rapid kinetics, wide pH range applicability, impressive sorption capacity, recyclability, and effective antibacterial properties, MPM proves to be a highly suitable adsorbent for removing Hexavalent chromium and Cd(II) from industrial wastewater.
期刊介绍:
The journal Adsorption provides authoritative information on adsorption and allied fields to scientists, engineers, and technologists throughout the world. The information takes the form of peer-reviewed articles, R&D notes, topical review papers, tutorial papers, book reviews, meeting announcements, and news.
Coverage includes fundamental and practical aspects of adsorption: mathematics, thermodynamics, chemistry, and physics, as well as processes, applications, models engineering, and equipment design.
Among the topics are Adsorbents: new materials, new synthesis techniques, characterization of structure and properties, and applications; Equilibria: novel theories or semi-empirical models, experimental data, and new measurement methods; Kinetics: new models, experimental data, and measurement methods. Processes: chemical, biochemical, environmental, and other applications, purification or bulk separation, fixed bed or moving bed systems, simulations, experiments, and design procedures.