{"title":"简便制备高容量柠檬酸交联壳聚糖和羧甲基纤维素水凝胶,用于快速动力学去除 Cu(II)","authors":"Maida Akhlaq, Sadia Naz, Maliha Uroos","doi":"10.1007/s10450-024-00446-x","DOIUrl":null,"url":null,"abstract":"<div><p>Adsorption is the most efficient technique for the removal of toxic organic dyes and metal ions from wastewater and it demands efficient, low-cost, environment friendly and collectable adsorbents. In this study, a one-pot strategy has been developed for the crosslinking of chitosan and carboxymethyl cellulose with citric acid to form the cross-linked hydrogel. The synthesized biosorbent hydrogel was characterized by FTIR, XRD and SEM that have confirmed the successful crosslinking. The batch adsorption experiments were performed to examine the capacity of hydrogel for the adsorption of Cu(II). The optimization of the adsorption process was carried out on the basis of various factors including; metal ion concentration, time, temperature, pH, agitation speed and adsorbent dose. Different isothermal and kinetic models were applied to interpret the data. The thermodynamic studies revealed that Langmuir model was the best fit with > 90% Cu(II) removal at pH 6. The kinetic studies confirmed the suitability of pseudo-second-order kinetics with correlation coefficient (R<sup>2</sup>) value 1. Several adsorption–desorption cycles were performed to check the recovery and reusability of hydrogel without the loss of maximum adsorption capacity.\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Facile fabrication of high capacity citric acid cross-linked chitosan and carboxymethyl cellulose-based hydrogel for fast kinetics removal of Cu(II)\",\"authors\":\"Maida Akhlaq, Sadia Naz, Maliha Uroos\",\"doi\":\"10.1007/s10450-024-00446-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Adsorption is the most efficient technique for the removal of toxic organic dyes and metal ions from wastewater and it demands efficient, low-cost, environment friendly and collectable adsorbents. In this study, a one-pot strategy has been developed for the crosslinking of chitosan and carboxymethyl cellulose with citric acid to form the cross-linked hydrogel. The synthesized biosorbent hydrogel was characterized by FTIR, XRD and SEM that have confirmed the successful crosslinking. The batch adsorption experiments were performed to examine the capacity of hydrogel for the adsorption of Cu(II). The optimization of the adsorption process was carried out on the basis of various factors including; metal ion concentration, time, temperature, pH, agitation speed and adsorbent dose. Different isothermal and kinetic models were applied to interpret the data. The thermodynamic studies revealed that Langmuir model was the best fit with > 90% Cu(II) removal at pH 6. The kinetic studies confirmed the suitability of pseudo-second-order kinetics with correlation coefficient (R<sup>2</sup>) value 1. Several adsorption–desorption cycles were performed to check the recovery and reusability of hydrogel without the loss of maximum adsorption capacity.\\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":458,\"journal\":{\"name\":\"Adsorption\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-03-15\",\"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/s10450-024-00446-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/s10450-024-00446-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}
Facile fabrication of high capacity citric acid cross-linked chitosan and carboxymethyl cellulose-based hydrogel for fast kinetics removal of Cu(II)
Adsorption is the most efficient technique for the removal of toxic organic dyes and metal ions from wastewater and it demands efficient, low-cost, environment friendly and collectable adsorbents. In this study, a one-pot strategy has been developed for the crosslinking of chitosan and carboxymethyl cellulose with citric acid to form the cross-linked hydrogel. The synthesized biosorbent hydrogel was characterized by FTIR, XRD and SEM that have confirmed the successful crosslinking. The batch adsorption experiments were performed to examine the capacity of hydrogel for the adsorption of Cu(II). The optimization of the adsorption process was carried out on the basis of various factors including; metal ion concentration, time, temperature, pH, agitation speed and adsorbent dose. Different isothermal and kinetic models were applied to interpret the data. The thermodynamic studies revealed that Langmuir model was the best fit with > 90% Cu(II) removal at pH 6. The kinetic studies confirmed the suitability of pseudo-second-order kinetics with correlation coefficient (R2) value 1. Several adsorption–desorption cycles were performed to check the recovery and reusability of hydrogel without the loss of maximum adsorption capacity.
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.