Does the phosphate ion bind to the calcium ion inside the Ca-alginate matrix? Or does it replace the hydroxyl ions? Both alginate matrix and phosphate are negatively charged, so how the adsorption takes place?
It is good question. Phosphate adsorption may be take place due to the following reason. (1) Available free valency/charge of calcium cation (2) Interaction with Hydroxide group of alginate . I think first one is major reason for adsorption. But both factor are highly sensitive towards the PH of solution and calcium ion concentration in alginate. You can confirm this phenomenon by varying the PH of solution and concentration of calcium ion in alginate separately.
Dear Dr. Shantanu Banerjee , I have found an interesting information the possible mechanism for phosphate ion adsorption onto calcium alginate. Please try to see the following interesting and useful publications. I hope they will help you much for your work.
Good Luck!!
http://www.academicjournals.org/article/article1424946758_Mahmood%20et%20al.pdf
https://www.nature.com/articles/s41598-017-03526-x.pdf
https://www.hindawi.com/journals/jamc/2017/3610878/
Article Soil Phosphorus
https://pubs.acs.org/doi/full/10.1021/acs.iecr.7b01523?src=recsys
https://pubs.acs.org/doi/full/10.1021/acs.iecr.7b01523?src=recsys
This article below
file:///C:/Users/ali/AppData/Local/Microsoft/Windows/Temporary%20Internet%20Files/Content.IE5/7FLL6O7Z/article1424946758_Mahmood%20et%20al.pdf
Hi dear Shantanu Banerjee
I think the following paper can help you;
please download the attachment
Best and kind regards.
dear Shantanu Banerjee
I think the following link also can help you;
Best and kind regards.
https://www.sciencedirect.com/science/article/pii/S1003632616643406
https://www.hindawi.com/journals/jamc/2017/3610878/
Dear Beemnet Mengesha Kassahun:
Thank you for the excellent references.
Best wishes.
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