Nitrate may be successfully removed from water using treatment processes such as ion exchange, biological de-nitrification, and reverse osmosis.
Article Nitrate Removal from Ground Water: A Review
Please go through the following RG links regarding removal of chromium from groundwater.
Article Removal of Cr(VI) from groundwater by Fe(0)
Article Removal of Hexavalent Chromium from Groundwater by Granular ...
Article Removal of Chromium From Groundwater using Neem Leaves as Adsorbent
Several treatment processes can remove nitrates from water
1. Biological Denitrification
2. Ion-exchange
3. Distillation
4. Reverse osmosis
Are among the methods used to remove nitrates from the water and the following also some methods used to remove chromium also.
1. Demineralization using a dual-bed ion exchange system.
2. treatment with brine
3. Lime soda softening
4. Reverse osmosis
5. Electrodialysis
6. Distillation
Arvind Singh Thank you for your participation in this discussion. Stay blessed.
Calcium polysuphide ( 3CaS5 ) can help with Chromium6 by converting it to chromium3. Or Chitinase (from prawn shells)
Cr(OH)3 is ‘non-toxic’. Thus conversion of toxic CrO42- to Cr(OH)3 is a clean-up strategy.
2CrO42- + 3CaS5 + 10H+ -> 2Cr(OH)3(s)+ 15S(s) + 3Ca2+ + 2H2O
Ujjayini ...Nitrate may be exchanged as suggested by Arvind and Chalachew above. Chromium has to be adsorbed by one the published method.
Simultaneous Removal of Chromium and Lead from Water by Sorption on Iraqi Montmorillonite
- Journal of Environmental Protection 06(03):237-249 (2015).
Sukanya S. Thanks a lot for your significant contribution. These papers are very helpful for me. May the Almighty God bless you.
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