Dear Friends, I am working on a research plan to mitigate ammonia pollution in water by the help of a desert plant extract (Yucca). I have taken its stem and powdered. This powder reduces ammonia in water but the residue/ turbidity/ colloidal particles that it leaves in water do not get settled by any coagulant like Alum, PACl, FeCl3, Tanfloc and ZnSO4. What should I use to coagulate the colloidal suspension in water. Meanwhile, I have also got a leachate sample collected from Delhi which also do not get coagulated by any mean. Please advice / suggest some way.
Regards
Lokesh Kumar
Chartered Chemist, Delhi, India
E-mail: [email protected]
Dear Kumar
Did you tried the hybrid polymers with cation charge ?
I think it will help you in your work.
Best wishes
Hi Lokesh,
it seems to me that the current approach creates more problems than it solves? I would suggest to identify the component that actually removed the NH3 (my guess the cellulose assuming that pH was not affected by addition of the powder). Once you have successfully identified and isolated the substrate you should be able to treat the water without the side effect. Another approach could be to consider alternative processes to remove NH3 (http://linkinghub.elsevier.com/retrieve/pii/S0011916401003897; http://linkinghub.elsevier.com/retrieve/pii/S0961953412001766).
As for leachate treatment contact Dr Salem Abu Amr who is an expert in this field.
All the best, Rob.
Hi Lokesh, I agree with Dr.Robert suggestion. we faced the same problem when we used Tannin for leachate coagulation. filtration followed by centrifugation can help for residual turbidity removal. FeSO4 will be an efficient coagulant for leachate at pH 4 - 5, followed by 30 min settling at pH 8.
Dear Salem Abu Amr
I published the following papers that may be help you in this title.
Regards
1. Municipal solid waste landfill leachate treatment by Fenton, photo-Fenton and Fenton-like processes: Effect of some variables Article Full-text available in my researchgate web
- Aug 2012
- Iranian Journal of Environmental Health Science & Engineering
- 📷Mohammad Ali Zazouli
- 📷Zabihollah Yousefi
- 📷Akbar Eslami
- 📷Maryam Bagheri Ardebilian
- 2. Removal of Heavy Metals from Solid Wastes Leachates Coagulation-Flocculation Process Article Full-text available in my researchgate web
- Nov 2008
- Journal of Applied Sciences
- 📷Zabihollah Yousefi
- 📷Mohammad Ali Zazouli
Dear Salem Abu Amr.
Have you tried to coagulate with Poly-Dadmac at higher temperature?
Another proposal is to adsorb the colloids by activated bentonite and flocculate the bentonite with polymeric flocculant.
BR
Angelo Scordialo
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