How Copper Kills Harmful Bacteria in Water
Author Information
Author(s): Sharan Riti, Chhibber Sanjay, Reed Robert H
Primary Institution: Centre for Plant and Water Science, CQUniversity
Hypothesis
Does storing water in copper vessels effectively inactivate water-borne pathogens?
Conclusion
Storing water in copper vessels for 24 hours effectively inactivates Salmonella Typhi, Salmonella Typhimurium, and Vibrio cholerae, but short-term exposure can cause sub-lethal injury to these bacteria.
Supporting Evidence
- All three pathogens were completely inactivated after 24 hours in copper vessels.
- Shorter-term storage showed higher counts of sub-lethally injured bacteria.
- Statistically significant differences were observed between aerobic and ROS-n counts.
Takeaway
Copper can kill germs in water, but if the water is only stored for a short time, some germs might still be hurt but not completely dead.
Methodology
Bacterial suspensions were stored in copper vessels at 30°C for 24 hours, with counts taken under aerobic and ROS-neutralized conditions.
Potential Biases
Potential bias in the selection of bacterial strains and conditions used for testing.
Limitations
The study primarily focused on three bacterial strains and may not represent all water-borne pathogens.
Statistical Information
P-Value
0.01
Confidence Interval
95%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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