针织工业2024，Issue(6) ：33-37.

PEI@SA微球制备及其对甲基蓝的吸附研究

PEI@SA Microsphere Preparation and Its Adsorption to Methyl Blue

李志 肖远淑 李帅 单国华
针织工业2024，Issue(6) ：33-37.
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PEI@SA微球制备及其对甲基蓝的吸附研究

PEI@SA Microsphere Preparation and Its Adsorption to Methyl Blue

李志 1肖远淑 2李帅 1单国华2
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作者信息

  • 1. 新疆大学纺织与服装学院,新疆 乌鲁木齐 830017
  • 2. 新疆大学纺织与服装学院,新疆 乌鲁木齐 830017;新疆特色纺织品与清洁染整技术重点实验室,新疆 乌鲁木齐 830017
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摘要

以海藻酸钠(SA)为基材,通过交联法制备聚乙烯亚胺(PEI)改性吸附剂PEI@SA,研究其对甲基蓝(MB)的吸附性能.采用SEM和FTIR对吸附剂表面形貌和化学结构进行表征.考察pH值、初始染料浓度、吸附时间对吸附性能的影响,然后对吸附过程进行等温线模型和动力学模型拟合.结果表明:PEI@SA对MB的吸附符合Langmuir吸附模型和准二级动力学模型,吸附过程为单分子层吸附,以化学吸附为主.25 ℃时对MB最大吸附量为88.34 mg/g,是未改性SA的10倍.

Abstract

PEI@SA adsorbent based on sodium alginate(SA)integrated with polyethyleneimine(PEI)was prepared using crosslinking method,which was employed for the elimination of methyl blue(MB).The chemical structure and the surface morphology of PEI@SA were characterized by FTIR and SEM.Subsequently,the influence of pH value,initial dye concentration and adsorption time on the MB adsorption was explored.Then,the adsorption process was fitted with isotherm model and kinetic model.The results show that the adsorption of MB is aligned to the Langmuir adsorption model and the quasi-second-order kinetic model.PEI@SA presents maximum adsorption capacity of 88.34 mg/g for MB at 25 ℃,which is 10 times higher than that of pristine SA adsorbent.

关键词

海藻酸钠/聚乙烯亚胺/吸附/甲基蓝/等温线/动力学

Key words

Sodium Alginate/Polyethyleneimine/Adsorbent/Methyl Blue/Isotherm Model/Kinetic Model

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出版年

2024
针织工业
天津市针织技术研究所 中国纺织信息中心

针织工业

北大核心
影响因子：0.262
ISSN：1000-4033
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