Please, could anyone provides me with a reference about the possible reactions between reactive black 5 dye and the natural organic matter in deionised water?
Reactive Black 5 ( RB 5) dye is a Azo dye, it contains nitrogen as the azo group -N=N- as part of their molecular structures. It contains chemical groups that bind metal ions especially chromium and the copper are the most common. It is an anionic dye. An anion exchange and ion-ion interactions may possible in acidic organic matter solution, while only anion exchange is possible in basic aqueous solution. Please see the attached file which help you to guess what type of reactions are possible with the natural organic matter.
In addition to the answer of Dr. J. C. Tarafdar, you can get an adequate answer from the following links: https://books.google.iq/books?isbn=1466696206
www.tandfonline.com/doi/full/10.1080/09593330.2011.572919?
Dear Khalid Hashim:
Numerous different interactions between low-molecular weight organics and humic substances are known. Pacheco et al. (2003) mention the following in their abstract: "Ion binding, hydrogen bonding, van der Waals forces, ligand exchange, hydrophobic and hydrophilic adsorption, charge-transfer complexes and sequestration are some of the different mechanisms proposed to bind inorganic and organic compounds to HAs." Article Supramolecular interactions of humic acids with organic and ...
The presence of humic substances may also affect the sorption of azo dyes to particulate matter such as silica (Prado et al. 2003) (Article Interaction of indigo carmine dye with silica modified with ...
) orpolyacrylamide/clay hybrid hydrogels (Yi et al. 2008) (Article Removal of methylene blue dye from aqueous solution by adsor...
). The additional presence of cations might further influence dye/humic matter interactions by complex formation. Very complicated issue...
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