Relationship between the structure of chitosan-based flocculants and their performances in the treatment of model azo dyeing wastewater

被引：26
作者：
Zheng, Jie [1 ]
Tang, Xiaomin [1 ,2 ]
Zhang, Shixin [2 ]
Huang, Ting [1 ]
Zheng, Huaili [2 ]
Sun, Bin [1 ]
机构：
[1] Chongqing Technol & Business Univ, Coll Environm & Resources, Chongqing Key Lab Catalysis & Funct Organ Mol, Chongqing 400067, Peoples R China
[2] Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, State Minist Educ, Chongqing 400045, Peoples R China
来源：
CHEMOSPHERE | 2020年 / 247卷 / 247期
基金：
中国国家自然科学基金;
关键词：
Chitosan-based flocculants; Imine; Secondary amine; Flocculation; Azo dyes; Wastewater; COAGULATION-FLOCCULATION; PARTICLE-SIZE; POLYACRYLAMIDE; XPS;
D O I：
10.1016/j.chemosphere.2020.125920
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Chitosan-based flocculants are efficient and biodegradable, possessing the potential application in water treatment. A chitosan-based flocculant, CTS-g-PAM, was prepared via grafting copolymerization. Two main structures of CTS-g-PAM were detected by X-ray photoelectron spectroscopy (XPS), and they related to the different performances of CTS-g-PAM in the treatment of model azo dyeing wastewater in terms of removal efficiency, floc size and zeta potential. CTS-g-PAM with the optimal ratio of C=N to eNHe owned the best performance. C=N reinforced the interaction between CTS-g-PAM and azo dyes and charge neutralization while the flocs formed in the case were large and compacted. However, excessive C=N accelerated itself hydrolysis and leaded to the decomposition of CTS-g-PAM, deteriorating the performance of the flocculant. (C) 2020 Elsevier Ltd. All rights reserved.
引用
收藏
页数：8
相关论文
共 26 条
  • [1] Natural flocculants from fresh and saline wastewater: Comparative properties and flocculation performances
    Ajao, Victor
    Bruning, Harry
    Rijnaarts, Huub
    Temmink, Hardy
    [J]. CHEMICAL ENGINEERING JOURNAL, 2018, 349 : 622 - 632
  • [2] A role of flocculant chain flexibility in flocculation of fine quartz. Part I. Intrinsic viscosities of polyacrylamide-based flocculants
    Arinaitwe, Esau
    Pawlik, Marek
    [J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2013, 124 : 50 - 57
  • [3] Efficient mycosorption of anionic azo dyes by Mucor circinelloides: Surface functional groups and removal mechanism study
    Azin, Ehsan
    Moghimi, Hamid
    [J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2018, 6 (04): : 4114 - 4123
  • [4] Municipal wastewater treatment by modified tannin flocculant agent
    Beltran-Heredia, J.
    Sanchez-Martin, J.
    [J]. DESALINATION, 2009, 249 (01) : 353 - 358
  • [5] Multivariate evaluation of the effect of the particle size distribution of an Active Pharmaceutical Ingredient on the performance of a pharmaceutical drug product: a real-case study
    Copelli, D.
    Cavecchi, A.
    Merusi, C.
    Leardi, R.
    [J]. CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 2018, 178 : 1 - 10
  • [6] Treatment of paint manufacturing wastewater by coagulation/electrochemical methods: Proposals for disposal and/or reuse of treated water
    da Silva, Larissa F.
    Barbosa, Andreia D.
    de Paula, Heber M.
    Romualdo, Lincoln L.
    Andrade, Leonardo S.
    [J]. WATER RESEARCH, 2016, 101 : 467 - 475
  • [7] XPS on Nd0.6-xBixSr0.4MnO3 nano powders
    Dudric, R.
    Bortnic, R.
    Souca, G.
    Ciceo-Lucacel, R.
    Stiufiuc, R.
    Tetean, R.
    [J]. APPLIED SURFACE SCIENCE, 2019, 487 : 17 - 21
  • [8] Synthesis of polyaluminium chloride/papermaking sludge-based organic polymer composites for removal of disperse yellow and reactive blue by flocculation
    Guo, Kangying
    Gao, Baoyu
    Tian, Xiangwei
    Yue, Qinyan
    Zhang, Ping
    Shen, Xue
    Xu, Xing
    [J]. CHEMOSPHERE, 2019, 231 : 337 - 348
  • [9] Polymer flocculation mechanism in animal slurry established by charge neutralization
    Hjorth, Maibritt
    Jorgensen, Bodil Ulbjerg
    [J]. WATER RESEARCH, 2012, 46 (04) : 1045 - 1051
  • [10] Interaction of poly(acrylic acid) and aluminum oxide particles in suspension: Particle size effect
    Kazzaz, Armin Eraghi
    Feizi, Zahra Hosseinpour
    Kong, Fangong
    Fatehi, Pedram
    [J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2018, 556 : 218 - 226
123