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淀粉纳米晶接枝聚乙烯亚胺对阴离子染料的吸附

陈启杰,  梁春艳,  赵雅兰,  游娜,  谢广阳,  魏雅琴,  郑小玲

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文章导航 > 环境工程  > 2023 >  41(3): 57-64
封例忠, 丛日强, 刘怡, 齐艳芳. 基于CFD的某330 MW燃煤机组SCR脱硝系统混合器优化与验证[J]. 环境工程, 2022, 40(10): 156-161. doi: 10.13205/j.hjgc.202210021
引用本文: 陈启杰, 梁春艳, 赵雅兰, 游娜, 谢广阳, 魏雅琴, 郑小玲. 淀粉纳米晶接枝聚乙烯亚胺对阴离子染料的吸附[J]. 环境工程, 2023, 41(3): 57-64. doi: 10.13205/j.hjgc.202303008
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FENG Lizhong, CONG Riqiang, LIU Yi, QI Yanfang. MICROMIXER IMPROVEMENT AND VERIFICATION FOR AN SCR DENITRATION SYSTEM OF A 330 MW COAL-FIRED POWER UNIT BASED ON CFD[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(10): 156-161. doi: 10.13205/j.hjgc.202210021
Citation: CHEN Qijie, LIANG Chunyan, ZHAO Yalan, YOU Na, XIE Guangyang, WEI Yaqin, ZHENG Xiaoling. ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 57-64. doi: 10.13205/j.hjgc.202303008
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淀粉纳米晶接枝聚乙烯亚胺对阴离子染料的吸附

doi: 10.13205/j.hjgc.202303008

  • 1. 长沙理工大学 化学化工学院, 长沙 410076;

  • 2. 湖南广信科技股份有限公司, 湖南 邵阳 422900

基金项目: 

长沙理工大学研究生科研创新项目(CXCLY2022122)

湖南省教育厅科研项目(22A0208)

湖南省高新技术产业科技创新引领计划项目(2021GK4040)

湖南省企业科技创新创业团队项目(201918)

详细信息
    作者简介:

    陈启杰(1980-),男,博士,教授,主要研究方向为生物基吸附材料。chenqijie@126.com

    通讯作者:

    陈启杰(1980-),男,博士,教授,主要研究方向为生物基吸附材料。chenqijie@126.com

ADSORPTION OF ANIONIC DYES BY STARCH NANOCRYSTALS GRAFTED POLYETHYLENEIMINE

  • 1. School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410076, China;

  • 2. Hunan Guangxin Technology Co., Ltd, Shaoyang 422900, China

摘要

    摘要
  • 摘要: 以戊二醛为交联剂、淀粉纳米晶(SNCs)为基材接枝聚乙烯亚胺(PEI),成功制备了一种新型生物基吸附剂(SNCs-PEI)。利用粒径、Zeta电位、红外光谱(FTIR)和能量色散X射线谱(EDX)对SNCs-PEI进行表征,并探究其对阴离子染料的吸附效果。当pH=3时,SNCs-PEI 的Zeta电位达到+37.9 mV,对阴离子染料甲基橙(MO)和刚果红(CR)均具有良好的吸附性能,考察了吸附时间、pH值、染料初始浓度、温度对SNCs-PEI吸附性能的影响。研究表明:在pH为3,SNCs-PEI投加量为0.1 g,MO、CR初始浓度为130 mg/L的条件下,SNCs-PEI对MO和CR的吸附过程均符合准二级动力学和Langmuir吸附模型,SNCs-PEI对MO、CR的最大吸附量分别为82.10,57.34 mg/g,吸附过程属于一个自发的吸热过程。该新型生物吸附剂的研究对含阴离子染料工业废水的去除提供了一种新途径。
    Abstract: Adsorption has become a common method in wastewater treatment because of its unique advantages. In this study, with glutaraldehyde as a cross-linking agent and starch nanocrystals (SNCs) as the substrate, grafting polyethyleneimine (PEI), a novel biosorbent (SNCs-PEI) was successfully prepared. SNCs-PEI was characterized by particle size, zeta potential, Fourier transform infrared spectroscopy (FTIR), and energy dispersive X-ray spectroscopy (EDX). When the value of pH was 3, the Zeta potential of SNCs-PEI was positive 37.9 mV, and it had good adsorption performance on anionic dyes methyl orange (MO) and Congo red (CR). The effects of adsorption time, pH, initial dye concentration and temperature on the absorption capacity of SNCs-PEI were investigated. Under the conditions of pH 3, SNCs-PEI dosage of 0.1 g and initial MO, CR concentration of 130 mg/L, the maximum adsorption capacity of Mo and CR by SNCs-PEI were 82.10, 57.34 mg/g, respectively, according to the fitting of Langmuir isothermal model. The research showed that the adsorption process of MO and CR by SNCs-PEI conformed to the pseudo-second-order kinetics and the Langmuir adsorption model, which was a spontaneous and endothermic process. The study of the new biological adsorbent provides a new way for the removal of industrial wastewater containing anionic dyes.
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出版历程
  • 收稿日期:  2022-04-25
  • 网络出版日期:  2023-05-26
  • 刊出日期:  2023-03-01

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