Md. Saidur Rahman Shakil , Mst. Sharmin Aktar , Md. Arafat Hossain , Sobur Ahmed
{"title":"羧甲基纤维素-氧化石墨烯复合材料的合成及其在缓解水溶液中 Pb2+ 和 Cd2+ 浓度方面的应用","authors":"Md. Saidur Rahman Shakil , Mst. Sharmin Aktar , Md. Arafat Hossain , Sobur Ahmed","doi":"10.1016/j.clet.2024.100724","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, carboxymethyl cellulose-graphene oxide (CMC-GO) nanocomposite was prepared and used as a low-cost adsorbent to remove Pb<sup>2+</sup> and Cd<sup>2+</sup> from aqueous solution. CMC-GO was characterized using various techniques such as FTIR, XRD, TGA, zeta potential and SEM with EDX. The optimum pH, adsorbent dose, time, and percentage of removal were found 5.0, 1.0 g/L, 60 min, and 96.3% for Pb<sup>2+</sup> and 5.5, 1.5 g/L, 60 min, and 82.5% for Cd<sup>2+</sup>, respectively at an initial concentration of 200 ppm. The Freundlich isotherm model and pseudo-second order kinetics were configured properly with experimental data and maximum capacity was found 213.21 mg/g and 134.04 mg/g for Pb<sup>2+</sup> and Cd<sup>2+</sup> ions respectively. The positive value of enthalpy (ΔH) and negative values of Gibbs free energy (ΔG) for the Cd<sup>2+</sup> and Pb<sup>2+</sup> sorption process indicate endothermic nature of sorption and spontaneous at room temperature. This study revealed that the prepared composite could be cost-effective, efficient and viable adsorbent for the remediation of toxic Pb<sup>2+</sup> and Cd<sup>2+</sup> pollution from water bodies as well as wastewater treatment.</p></div>","PeriodicalId":34618,"journal":{"name":"Cleaner Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666790824000041/pdfft?md5=c8772bb874bfeafa800046197123c48c&pid=1-s2.0-S2666790824000041-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Synthesis and application of carboxymethyl cellulose-graphene oxide composite for the mitigation of Pb2+ and Cd2+ from aqueous solution\",\"authors\":\"Md. Saidur Rahman Shakil , Mst. Sharmin Aktar , Md. Arafat Hossain , Sobur Ahmed\",\"doi\":\"10.1016/j.clet.2024.100724\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, carboxymethyl cellulose-graphene oxide (CMC-GO) nanocomposite was prepared and used as a low-cost adsorbent to remove Pb<sup>2+</sup> and Cd<sup>2+</sup> from aqueous solution. CMC-GO was characterized using various techniques such as FTIR, XRD, TGA, zeta potential and SEM with EDX. The optimum pH, adsorbent dose, time, and percentage of removal were found 5.0, 1.0 g/L, 60 min, and 96.3% for Pb<sup>2+</sup> and 5.5, 1.5 g/L, 60 min, and 82.5% for Cd<sup>2+</sup>, respectively at an initial concentration of 200 ppm. The Freundlich isotherm model and pseudo-second order kinetics were configured properly with experimental data and maximum capacity was found 213.21 mg/g and 134.04 mg/g for Pb<sup>2+</sup> and Cd<sup>2+</sup> ions respectively. The positive value of enthalpy (ΔH) and negative values of Gibbs free energy (ΔG) for the Cd<sup>2+</sup> and Pb<sup>2+</sup> sorption process indicate endothermic nature of sorption and spontaneous at room temperature. This study revealed that the prepared composite could be cost-effective, efficient and viable adsorbent for the remediation of toxic Pb<sup>2+</sup> and Cd<sup>2+</sup> pollution from water bodies as well as wastewater treatment.</p></div>\",\"PeriodicalId\":34618,\"journal\":{\"name\":\"Cleaner Engineering and Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S2666790824000041/pdfft?md5=c8772bb874bfeafa800046197123c48c&pid=1-s2.0-S2666790824000041-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cleaner Engineering and Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2666790824000041\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cleaner Engineering and Technology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666790824000041","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Synthesis and application of carboxymethyl cellulose-graphene oxide composite for the mitigation of Pb2+ and Cd2+ from aqueous solution
In this work, carboxymethyl cellulose-graphene oxide (CMC-GO) nanocomposite was prepared and used as a low-cost adsorbent to remove Pb2+ and Cd2+ from aqueous solution. CMC-GO was characterized using various techniques such as FTIR, XRD, TGA, zeta potential and SEM with EDX. The optimum pH, adsorbent dose, time, and percentage of removal were found 5.0, 1.0 g/L, 60 min, and 96.3% for Pb2+ and 5.5, 1.5 g/L, 60 min, and 82.5% for Cd2+, respectively at an initial concentration of 200 ppm. The Freundlich isotherm model and pseudo-second order kinetics were configured properly with experimental data and maximum capacity was found 213.21 mg/g and 134.04 mg/g for Pb2+ and Cd2+ ions respectively. The positive value of enthalpy (ΔH) and negative values of Gibbs free energy (ΔG) for the Cd2+ and Pb2+ sorption process indicate endothermic nature of sorption and spontaneous at room temperature. This study revealed that the prepared composite could be cost-effective, efficient and viable adsorbent for the remediation of toxic Pb2+ and Cd2+ pollution from water bodies as well as wastewater treatment.