Intraparticle diffusion processes during acid dye adsorption onto chitosan

2007 ◽  
Vol 98 (15) ◽  
pp. 2897-2904 ◽  
Author(s):  
W.H. Cheung ◽  
Y.S. Szeto ◽  
G. McKay
Keyword(s):  
Diffusion Processes ◽  
Dye Adsorption ◽  
Intraparticle Diffusion ◽  
Acid Dye

Intraparticle diffusion in single and multicomponent acid dye adsorption from wastewater onto carbon

2004 ◽  
Vol 103 (1-3) ◽  
pp. 133-145 ◽  
Author(s):  
Keith K.H. Choy ◽  
John F. Porter ◽  
Gordon Mckay
Keyword(s):  
Dye Adsorption ◽  
Intraparticle Diffusion ◽  
Acid Dye

scholarly journals Preparation of Chitosan/Hyperbranched Polyester/Cobalt Composite For Acid Blue 277 Dye Adsorption

2020 ◽  
Vol 11 (4) ◽  
pp. 11653-11665
Keyword(s):  
Particle Size ◽  
Dye Adsorption ◽  
Particle Size Analysis ◽  
Isotherm Models ◽  
Size Analysis ◽  
Order Kinetic ◽  
Hyperbranched Polyester ◽  
Acid Dye ◽  
Equilibrium Studies ◽  
Acid Blue

Acid dye effluents are among the popular threatening sources to the environment and human health due to their photochemical stability, complexity, and poor biodegradability. Therefore, this study aims to prepare chitosan/hyperbranched polyester (HBPE)/cobalt composite with ratio (1:1:0.5 wt %, respectively) using emulsion technique as an adsorbent to deal with the acid dye effluent. Chemical structure, morphology, particle size analysis, and thermal stability of the prepared composite were carried out using Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM),) dynamic light scattering technique (DLS) and thermogravimetric analysis (TGA). Adsorption isotherms of acid blue 277 dye (AB277), using the different isotherm models (Langmuir, Freundlich, D-R, and Temkin) under removal conditions at pH 3.0 and contact time of 1 h in 10 mL aqueous medium at 25ᴼC, were investigated. The results illustrated that the chitosan/HBPE/Co composite was successfully prepared with a particle size of around 679±494 nm relative to chitosan/HBPE (139±67.6 nm). Also, the pseudo-second-order kinetic model fitted better than the pseudo-first-order one for adsorption of AB277. Batch equilibrium studies showed that chitosan/HBPE/Co composite could be employed as an efficient adsorbent of AB277 dye with an adsorption capacity of 26.74 mg/g, relative to that of chitosan/HBPE (3.19 mg/g).

Adsorption of Acid Dyes onto Wool in TX-100 Reverse Micelles

2011 ◽  
Vol 233-235 ◽  
pp. 1366-1369
Author(s):  
Shi Xiong Yi ◽  
Yong Chun Dong
Keyword(s):  
Reverse Micelles ◽  
Dye Adsorption ◽  
Water Soluble ◽  
Molar Ratio ◽  
Ionic Surfactant ◽  
Acid Dye ◽  
Acid Dyes ◽  
Isotherm Equation ◽  
Langmuir Isotherm Equation ◽  
Ph Level

The non-ionic reverse micelles used for dyeing wool were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of acid dye aqueous solution. And the adsorption properties of three water-soluble anionic acid dye including Mordant Black 9, Acid Black 234 and Acid Orange 156 onto wool in TX-100 reverse micelle were studied and compared. Then effect of W value (molar ratio of the injected water to TX-100) and pH level on dye adsorption was also investigated. The results indicate that Higher W value and Low pH level would increase the adsorption amount of the dye onto wool. The adsorption of the dye onto wool showed better agreement with Langmuir isotherm equation. Mordant Black 9 with lower molecular weight and one sulfonic group exhibited the higher adsorption capacity than the other dyes.

scholarly journals Acid Dye Adsorption Properties of Ethylenediamine-Modified Magnetic Chitosan Nanoparticles

2011 ◽  
Vol 27 (03) ◽  
pp. 677-682 ◽  
Author(s):  
ZHOU Li-Min ◽  
◽  
SHANG Chao ◽  
LIU Zhi-Rong ◽  
Keyword(s):  
Chitosan Nanoparticles ◽  
Dye Adsorption ◽  
Adsorption Properties ◽  
Acid Dye ◽  
Magnetic Chitosan

Equilibrium Studies for Acid Dye Adsorption onto Chitosan

Langmuir ◽  
2003 ◽  
Vol 19 (19) ◽  
pp. 7888-7894 ◽  
Author(s):  
Y. C. Wong ◽  
Y. S. Szeto ◽  
W. H. Cheung ◽  
G. McKay
Keyword(s):  
Dye Adsorption ◽  
Acid Dye ◽  
Equilibrium Studies

Preparation and acid dye adsorption behavior of polyurethane/chitosan composite foams

2009 ◽  
Vol 10 (5) ◽  
pp. 636-642 ◽  
Author(s):  
Ho Cheon Lee ◽  
Young Gyu Jeong ◽  
Byung Gil Min ◽  
Won Seok Lyoo ◽  
Sang Cheol Lee
Keyword(s):  
Dye Adsorption ◽  
Adsorption Behavior ◽  
Acid Dye ◽  
Composite Foams ◽  
Chitosan Composite

The adsorption of dyes in chitin. III. Intraparticle diffusion processes

1983 ◽  
Vol 28 (5) ◽  
pp. 1767-1778 ◽  
Author(s):  
G. McKay ◽  
H. S. Blair ◽  
J. Gardner
Keyword(s):  
Diffusion Processes ◽  
Intraparticle Diffusion
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