{"title":"柠檬酸-壳聚糖变体树脂从模拟采矿和农业废水系统中去除铅、铁和锌的循环吸附和解吸特性","authors":"Prabhat Kumar Patel, Lalit Mohan Pandey, Ramagopal V.S. Uppaluri","doi":"10.1007/s10924-024-03343-0","DOIUrl":null,"url":null,"abstract":"<div><p>Targeted sorbents for the real-world adsorptive separation of heavy metals shall exhibit high sorption capacity, reusability, and cost-effectiveness. In this study, a novel composite sorbent has been synthesized for the concurrent mitigation of iron, lead, and zinc metal ions from synthetic wastewater systems. For this purpose, chitosan with alternate molecular weight (low, medium, and high) and with hydroxyl and amine functional groups was employed as a substrate. The successful anchoring of the organic compound citric acid was achieved with the glutaraldehyde crosslinker. The medium molecular weight chitosan-citric acid (medium Cit-CS) has been evaluated to achieve optimal metal uptake of 243.90, 3.93, and 144.93 mg g<sup>−1</sup> for zinc, lead, and iron from intricate Zn dominant adsorbate system. Accordingly, it was ascertained that other alternative ions in the adsorbate system significantly alter the sorption patterns. The validation of the chemisorption process was effectively established through the consistency observed in the pattern of adsorption as well as the successful modeling via the pseudo-second-order (PSO) approach. Following this, the desorption of metal ions was effective with simple basic and acidic eluents and for a three-cycle-based simultaneous regeneration. In summary, the findings demonstrate the promising performance of the sorbent for metal ions eradication from intricate solutions.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Cyclic Adsorption and Desorption Characteristics of Citric Acid-chitosan Variant Resins for Pb, Fe, and Zn Removal from Simulated Mining and Agricultural Wastewater System\",\"authors\":\"Prabhat Kumar Patel, Lalit Mohan Pandey, Ramagopal V.S. Uppaluri\",\"doi\":\"10.1007/s10924-024-03343-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Targeted sorbents for the real-world adsorptive separation of heavy metals shall exhibit high sorption capacity, reusability, and cost-effectiveness. In this study, a novel composite sorbent has been synthesized for the concurrent mitigation of iron, lead, and zinc metal ions from synthetic wastewater systems. For this purpose, chitosan with alternate molecular weight (low, medium, and high) and with hydroxyl and amine functional groups was employed as a substrate. The successful anchoring of the organic compound citric acid was achieved with the glutaraldehyde crosslinker. The medium molecular weight chitosan-citric acid (medium Cit-CS) has been evaluated to achieve optimal metal uptake of 243.90, 3.93, and 144.93 mg g<sup>−1</sup> for zinc, lead, and iron from intricate Zn dominant adsorbate system. Accordingly, it was ascertained that other alternative ions in the adsorbate system significantly alter the sorption patterns. The validation of the chemisorption process was effectively established through the consistency observed in the pattern of adsorption as well as the successful modeling via the pseudo-second-order (PSO) approach. Following this, the desorption of metal ions was effective with simple basic and acidic eluents and for a three-cycle-based simultaneous regeneration. In summary, the findings demonstrate the promising performance of the sorbent for metal ions eradication from intricate solutions.</p></div>\",\"PeriodicalId\":659,\"journal\":{\"name\":\"Journal of Polymers and the Environment\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Polymers and the Environment\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10924-024-03343-0\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymers and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10924-024-03343-0","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Cyclic Adsorption and Desorption Characteristics of Citric Acid-chitosan Variant Resins for Pb, Fe, and Zn Removal from Simulated Mining and Agricultural Wastewater System
Targeted sorbents for the real-world adsorptive separation of heavy metals shall exhibit high sorption capacity, reusability, and cost-effectiveness. In this study, a novel composite sorbent has been synthesized for the concurrent mitigation of iron, lead, and zinc metal ions from synthetic wastewater systems. For this purpose, chitosan with alternate molecular weight (low, medium, and high) and with hydroxyl and amine functional groups was employed as a substrate. The successful anchoring of the organic compound citric acid was achieved with the glutaraldehyde crosslinker. The medium molecular weight chitosan-citric acid (medium Cit-CS) has been evaluated to achieve optimal metal uptake of 243.90, 3.93, and 144.93 mg g−1 for zinc, lead, and iron from intricate Zn dominant adsorbate system. Accordingly, it was ascertained that other alternative ions in the adsorbate system significantly alter the sorption patterns. The validation of the chemisorption process was effectively established through the consistency observed in the pattern of adsorption as well as the successful modeling via the pseudo-second-order (PSO) approach. Following this, the desorption of metal ions was effective with simple basic and acidic eluents and for a three-cycle-based simultaneous regeneration. In summary, the findings demonstrate the promising performance of the sorbent for metal ions eradication from intricate solutions.
期刊介绍:
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.