Removal of an anionic dye
(Acid Blue 92) by coagulation-flocculation using chitosan.
The pens were also analyzed with the anionic dye
capillary electrophoresis method; however, the electropherograms were similar for most of the pens and revealed that few, if any, anionic dyes
Varada Reddy, "The use of an agricultural waste material, Jujuba seeds for the removal of anionic dye
(Congo red) from aqueous medium," Journal of Hazardous Materials, vol.
Metanil Yellow was the only anionic dye
that had an easily interpretable laser desorption/ionization-mass spectrometry that could be assigned to the single-charged molecule at m/z 351.
Therefore, the feasibility of achieving cationic and anionic dye
removal from aqueous solutions using a combined electrocoagulation and adsorption system composed of commercial activated carbon and sewage sludge-derived carbonaceous material as adsorbents was examined.
The absorption of cationic dye (CV), anionic dye
(AY), and mixture of dyes (CV + AY) by SHs and MNHs were investigated.
This shows that pH<pHzpc and the surface of adsorbent is positively charged which favors the adsorption of anionic dye
Alizarin Red S.
In this regard, reactive dyes and anionic dyes
such as acid dyes are not usually used for acrylic colouration as these dyes suffer from being not substantive for the fabrics as a result of the repulsive effects that occur between the anionic groups present in the fabrics and those present in the dye molecules.
However, to our knowledge, studies on anionic dyes
removal using feldspars are limited in the literature, and since several reports have recently presented that the modified geological materials provide higher adsorption capacity towards anionic components than their original, in this study, bio-based CTS/feldspar composite was prepared for removing Acid Black 1 as a model to study adsorptive potential of the composite towards acid dyes.
This solubilization process can be explained by the host guest relationship between the dye and surfactant molecules, where anionic dye
molecules are accommodated within the micelles of cationic CTAB.
The mercerized fibers adsorb higher amounts of anionic dye
than fibers which were only purified.
Li, "Mechanism of adsorption of anionic dye
from aqueous solutions onto organobentonite," Journal of Hazardous Materials, vol.