谷物副产品阳离子纤维素脱除刚果红的动力学、平衡和热力学

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Chemistry and Technology Pub Date : 2022-11-29 DOI:10.35812/cellulosechemtechnol.2022.56.100

P. Vassileva, I. Uzunov, D. Voykova

{"title":"谷物副产品阳离子纤维素脱除刚果红的动力学、平衡和热力学","authors":"P. Vassileva, I. Uzunov, D. Voykova","doi":"10.35812/cellulosechemtechnol.2022.56.100","DOIUrl":null,"url":null,"abstract":"The present study deals with the removal efficiency towards Congo red dye of two cationized cellulose adsorbents prepared from cereal by-products. Rice and einkorn husks were used as raw materials to extract and separate the cellulose by alkali and bleaching treatments. The cellulose materials were modified with N,N-dimethyl-1-octadecylamine to prepare cationized adsorbents. Instrumental methods, such as XRD, DTA, FTIR and SEM, as well as low-temperature nitrogen adsorption, were used for their characterization. The results showed that the quaternary ammonium group was successfully grafted onto the cellulose structures. The survey mainly focused on the effect of process parameters on the adsorption capacity of the investigated materials, including contact time, initial Congo red concentrations, solution pH and temperature. The adsorption process was well described by the pseudo-second-order and Langmuir models. The values of entropy, enthalpy and Gibbs free energy for the Congo red removal were determined.","PeriodicalId":10130,"journal":{"name":"Cellulose Chemistry and Technology","volume":" ","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"KINETICS, EQUILIBRIUM AND THERMODYNAMICS OF CONGO RED REMOVAL BY CATIONIZED CELLULOSE OBTAINED FROM CEREAL BY-PRODUCTS\",\"authors\":\"P. Vassileva, I. Uzunov, D. Voykova\",\"doi\":\"10.35812/cellulosechemtechnol.2022.56.100\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The present study deals with the removal efficiency towards Congo red dye of two cationized cellulose adsorbents prepared from cereal by-products. Rice and einkorn husks were used as raw materials to extract and separate the cellulose by alkali and bleaching treatments. The cellulose materials were modified with N,N-dimethyl-1-octadecylamine to prepare cationized adsorbents. Instrumental methods, such as XRD, DTA, FTIR and SEM, as well as low-temperature nitrogen adsorption, were used for their characterization. The results showed that the quaternary ammonium group was successfully grafted onto the cellulose structures. The survey mainly focused on the effect of process parameters on the adsorption capacity of the investigated materials, including contact time, initial Congo red concentrations, solution pH and temperature. The adsorption process was well described by the pseudo-second-order and Langmuir models. The values of entropy, enthalpy and Gibbs free energy for the Congo red removal were determined.\",\"PeriodicalId\":10130,\"journal\":{\"name\":\"Cellulose Chemistry and Technology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2022-11-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cellulose Chemistry and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.35812/cellulosechemtechnol.2022.56.100\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, PAPER & WOOD\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellulose Chemistry and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.35812/cellulosechemtechnol.2022.56.100","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, PAPER & WOOD","Score":null,"Total":0}

引用次数: 2

摘要

研究了以谷物副产品为原料制备的两种阳离子纤维素吸附剂对刚果红染料的去除效果。以大米和玉米壳为原料，通过碱处理和漂白处理对纤维素进行提取和分离。用N，N-二甲基-1-十八烷基胺对纤维素材料进行改性，制备阳离子吸附剂。采用XRD、DTA、FTIR和SEM等仪器方法以及低温氮吸附对其进行了表征。结果表明，季铵基团成功地接枝到纤维素结构上。调查主要集中在工艺参数对所研究材料吸附能力的影响，包括接触时间、初始刚果红浓度、溶液pH和温度。用拟二阶和Langmuir模型很好地描述了吸附过程。测定了去除刚果红的熵、焓和吉布斯自由能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

KINETICS, EQUILIBRIUM AND THERMODYNAMICS OF CONGO RED REMOVAL BY CATIONIZED CELLULOSE OBTAINED FROM CEREAL BY-PRODUCTS

The present study deals with the removal efficiency towards Congo red dye of two cationized cellulose adsorbents prepared from cereal by-products. Rice and einkorn husks were used as raw materials to extract and separate the cellulose by alkali and bleaching treatments. The cellulose materials were modified with N,N-dimethyl-1-octadecylamine to prepare cationized adsorbents. Instrumental methods, such as XRD, DTA, FTIR and SEM, as well as low-temperature nitrogen adsorption, were used for their characterization. The results showed that the quaternary ammonium group was successfully grafted onto the cellulose structures. The survey mainly focused on the effect of process parameters on the adsorption capacity of the investigated materials, including contact time, initial Congo red concentrations, solution pH and temperature. The adsorption process was well described by the pseudo-second-order and Langmuir models. The values of entropy, enthalpy and Gibbs free energy for the Congo red removal were determined.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Cellulose Chemistry and Technology 工程技术-材料科学：纸与木材

CiteScore

2.30

自引率

23.10%

发文量

审稿时长

7.3 months

期刊介绍： Cellulose Chemistry and Technology covers the study and exploitation of the industrial applications of carbohydrate polymers in areas such as food, textiles, paper, wood, adhesives, pharmaceuticals, oil field applications and industrial chemistry. Topics include: • studies of structure and properties • biological and industrial development • analytical methods • chemical and microbiological modifications • interactions with other materials