Claims:1. A process for treatment of water contaminated with heavy metals, , said process comprising:
- contacting said water with copper adsorbed calcium carbonate,
wherein said method reduces heavy metals contamination levels in said water post-treatment.
2. The process as claimed in claim 1, wherein said contacting step comprises: (a) addition of copper adsorbed calcium carbonate in a step-wise manner; (b) agitating/stirring for 15-30 minutes; and (c) allowing the agitated water to settle for 1-10 hours.
3. The process as claimed in claim 1, wherein said heavy metals are selected from the group that includes but is not limited to chromium, copper, nickel and combinations thereof.
4. The process as claimed in claim 1, wherein said process reduces heavy metals contamination in water in the range of 98-99.9%.
5. The process as claimed in claim 1, wherein said process reduces chromium contamination by 99%, reduces copper contamination by 98%, and reduces nickel contamination to below detectable levels.
6. The process as claimed in claim 1, wherein water contaminated with heavy metals to copper adsorbed calcium carbonate v/w ratio is in the range of 20:1-100:1.
7. The process as claimed in claim 6, wherein water contaminated with heavy metals to copper adsorbed calcium carbonate v/w ratio is 50:1.
8. The process as claimed in claim 1, wherein said process is carried out at a pH in the range of 6-7.
9. The process as claimed in claim 1, wherein in said copper adsorbed calcium carbonate, copper is present as copper oxide, and copper to calcium carbonate w/w ratio is in the range of 1:2-1:2.5.
10. The process as claimed in claim 9, wherein copper to calcium carbonate w/w ratio in said copper adsorbed calcium carbonate is 1:2.22.
, Description:N/A