Preparation and characterization of a bi-layered nano-filtration membrane from a chitosan hydrogel and bacterial cellulose nanofiber for dye removal

Cai, Zengxuan; Xiong, Ping; Zhu, Cong; Zhai, Tingting; Guo, Jie; Zhao, Kongyin

doi:10.1007/s10570-018-1914-0

Cited by 75 publications

(27 citation statements)

References 37 publications

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“…These derivatives can be applied in the fields of biomedicine [7,8,9], environmental protection [10,11], food packaging [12], functional materials [13,14], membrane technology [15,16,17,18] and so on. For example: Zhijiang, C. et al [19] prepared a chitosan-based nanofiltration membrane by electrospinning technology, which can effectively remove the dye in wastewater [20]. The cellulose and chitosan composite membrane prepared by Urbina, L. [21] and Lam, B.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Water-Resistant Properties of Eco-Friendly Chitosan Membrane Reinforced with Cellulose Nanocrystals

et al. 2019

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Environmentally benign and biodegradable chitosan (CS) membranes have disadvantages such as low mechanical strength, high brittleness, poor heat resistance and poor water resistance, which limit their applications. In this paper, home-made cellulose nanocrystals (CNC) were added to CS to prepare CNC/CS composite membranes through mechanical mixing and solution casting approaches. The effects of CNC dispersion patterns and CNC contents on the properties of composite membranes were studied. The analysis of the surface and cross-section morphology of the membranes showed that the dispersion performance of the composite membrane was better in the case that CNC was dissolved in an acetic acid solution and then mixed with chitosan by a homogenizer (Method 2). CNC had a great length-diameter ratio and CNC intensely interacted with CS. The mechanical properties of the composite membrane prepared with Method 2 were better. With a CNC content of 3%, the tensile strength of the composite membrane reached 43.0 MPa, 13.2% higher than that of the CNC-free membrane. The elongation at break was 41.6%, 56.4% higher than that of the CNC-free membrane. Thermogravimetric, contact angle and swelling analysis results showed that the addition of CNC could improve the heat and water resistance of the chitosan membrane.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Water-Resistant Properties of Eco-Friendly Chitosan Membrane Reinforced with Cellulose Nanocrystals

et al. 2019

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“…[26][27][28] Related to the theoretical premises of the adsorption mechanism of the Procion Red MX-5B and Procion Blue MX-R dyes in a weakly alkaline solution (pH=8), studies on the absorption of reactive dyes onto cellulose fibres, under similar basic conditions, demonstrated the preferential reaction of the primary hydroxyl groups of the cellulose. 29,30 As the chitosan biopolymer is chemically similar to cellulose (except the primary aliphatic amino group at the carbon 2), a similar adsorption mechanism of the reactive dyes onto chitosan at alkaline pH can be envisaged. It may be hypothesised that the hydroxyl group of the chitosan could covalently bond the reactive dyes, but the possibility of reaction of the amine groups should not be neglected, taking into consideration their better reactivity to anionic dyes.…”

Section: Results and Discussion Adsorption Mechanism Premisesmentioning

confidence: 99%

Adsorption of Certain Textile Dyes Onto Chitosan. Spectroscopic and Thermal Analysis

Dulman¹,

Lisă²,

Bobu³

et al. 2020

Cellulose Chem. Technol.

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The characteristics of products obtained by adsorption of commercial dyes Bezanyl Green F2B (W), Procion Red MX-5B (R), Procion Blue MX-R (D) onto chitosan were investigated by thermogravimetric analysis, FT-IR spectroscopy and polarized optical microscopy. The thermal degradation of pristine chitosan (CH) and chitosan treated with dyes (CH-W, CH-R, CH-D) exhibited two decomposition stages, with a similar shape of the curves. Significant differences between the thermal parameters of the samples occurred during the second decomposition stage, and were correlated with the different structures of the dyes adsorbed onto CH. The thermotropic behaviour of the samples investigated by polarized optical microscopy confirmed the data obtained from TGA.

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“…The presence of large number of carbonyl and alcoholic hydroxyl groups suggests that MWCNTs were introduced onto cellulose. The coated fibers (grafted and cellulose) could reject 90% of the dyes with molecular weight higher than 600 g mol −1 at a high flux rate (150.72 L m −2 h −1 ) and operating pressure (0.5 MPa) . Similarly, to overcome shortcomings of electrospinning process, Dotto and coworkers prepared chitosan/polyamide nanofibers using force‐spinning as shown in Figure which were produced at a rate of 3 g h −1 .…”

Section: Removal Of Dyesmentioning

confidence: 99%

“…The coated fibers (grafted and cellulose) could reject 90% of the dyes with molecular weight higher than 600 g mol −1 at a high flux rate (150.72 L m −2 h −1 ) and operating pressure (0.5 MPa). [68] Similarly, to overcome shortcomings of electrospinning process, Dotto and coworkers prepared chitosan/polyamide nanofibers using force-spinning as shown in Figure 9 which were produced at a rate of 3 g h −1 . The resultant fibers exhibited characteristics as adsorbent to remove Reactive Black 5 (456.9 mg g −1 ) and Ponceau 4R (502.4 mg g −1 ).…”

Section: Removal Of Dyesmentioning

confidence: 99%

Bio‐Based Nanofibers Involved in Wastewater Treatment

Gandavadi

Sundarrajan

Ramakrishna

2019

Macro Materials & Eng

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Studies involving bio‐based nanofibers are well utilized in the field of energy, catalysis, electronics, and environmental science. In this review, the importance of utilizing bio‐based materials for the development and optimization of multiplexed nanofibers and the modifications adopted to overcome the drawbacks of conventional electro‐spinning to facilitate better production rates, enhanced adsorption, and its potential in removing heavy metal ions, dyes, and other contaminants polluting the environment are highlighted. This work provides the readers the ability to understand the complexity in fabrication of bio‐based nanofibers focusing primarily on chitosan, cellulose, and protein‐based nanofibers and their mechanism toward quenching/degradation of water contaminants. In addition, it also provides the advantages of using bio‐based materials over synthetic materials for the development of nanofibers.

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Preparation and characterization of a bi-layered nano-filtration membrane from a chitosan hydrogel and bacterial cellulose nanofiber for dye removal

Cited by 75 publications

References 37 publications

Mechanical and Water-Resistant Properties of Eco-Friendly Chitosan Membrane Reinforced with Cellulose Nanocrystals

Mechanical and Water-Resistant Properties of Eco-Friendly Chitosan Membrane Reinforced with Cellulose Nanocrystals

Adsorption of Certain Textile Dyes Onto Chitosan. Spectroscopic and Thermal Analysis

Bio‐Based Nanofibers Involved in Wastewater Treatment

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