scholarly journals The Effect of Membrane Structure Prepared from Carboxymethyl Cellulose and Cellulose Nanofibrils for Cationic Dye Removal

2018 ◽  
Vol 27 (2) ◽  
pp. 318-332 ◽  
Author(s):  
Selestina Gorgieva ◽  
Robert Vogrinčič ◽  
Vanja Kokol
Keyword(s):  
Carboxymethyl Cellulose ◽  
Membrane Structure ◽  
Dye Removal ◽  
Cellulose Nanofibrils ◽  
Cationic Dye

Highly efficient and sustainable alginate/carboxylated lignin hybrid beads as adsorbent for cationic dye removal

2021 ◽  
pp. 104839
Author(s):  
Jong-Chan Kim ◽  
Jungkyu Kim ◽  
Jinseok Park ◽  
Jung-Kwon Oh ◽  
In-Gyu Choi ◽  
...  
Keyword(s):  
Dye Removal ◽  
Cationic Dye ◽  
Highly Efficient

Poly(N-vinyl caprolactam-co-maleic acid) microparticles for cationic dye removal

2015 ◽  
Vol 73 (5) ◽  
pp. 1283-1301 ◽  
Author(s):  
Irina Popescu ◽  
Dana Mihaela Suflet
Keyword(s):  
Maleic Acid ◽  
Dye Removal ◽  
Cationic Dye

Highly efficient film-like nanocellulose-based adsorbents for the removal of loose reactive dye during textile laundering

2018 ◽  
Vol 89 (6) ◽  
pp. 975-988 ◽  
Author(s):  
Vera Vivod ◽  
Branko Neral ◽  
Aleš Mihelič ◽  
Vanja Kokol
Keyword(s):  
Contact Angle ◽  
Surface Potential ◽  
Dye Removal ◽  
Cellulose Nanofibrils ◽  
Reactive Dye ◽  
Cationic Polymer ◽  
Solvent Casting ◽  
Dye Molecules ◽  
Casting Method ◽  
Bleeding Effect

Cellulose nanofibrils (CNFs) were surface functionalized with hexamethylenediamine (HMDA) and, further, integrated with native CNFs in various weight mass ratios to fabricate water-stable films by the solvent casting method, to be used for the removal of tri-chromatic and anionic black reactive dye with the highest bleeding effect in the very first minutes of textile laundering, and in a weight mass compared to a commercial color-catcher sheet (Delta Pronatura (DP)). The effects of CNF-HMDA content on film bath absorption, surface potential and contact angle properties, as well as dye removal kinetics from different laundering baths (A – without and B – with a detergent) in up to 140 min were studied at 20℃ versus 60℃ and using different dye concentrations (0.1–1 g/L). It was found that bath absorption is decreased significantly (up to 60%) by increasing the CNF-HMDA content in the films, as compared to using a DP color-catcher sheet, due to a morphologically denser structure with surface-positioned hydrophobic ethylene moieties of HMDA, as well as reducing electrostatic attraction groups of CNF and HMDA. Such a surface interacts kinetically faster with anionic and hydrophobic dye molecules already at 20℃, reaching up to 37–80% removal of all dye colorants in the first 20 min. In contrast, the dye removal efficacy of the DP color-catcher sheet is due to it interacting with a cationic polymer being released from the surface, which is better only for a bluish color, and at 60℃, while being between 30% and 48%, as its release is hindered and reduced by the deposition of surfactants from the detergent.

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