Removing Chromium from Tannery Wastewater Using Hydrogel Beads
Author Information
Author(s): Muñoz-Martinez Mayra X., Macías-Quiroga Iván F., Sanabria-González Nancy R.
Primary Institution: Universidad Nacional de Colombia Sede Manizales
Hypothesis
Can organobentonite/alginate hydrogel beads effectively remove Cr(VI) from tannery wastewater?
Conclusion
The study found that organobentonite/alginate hydrogel beads can remove over 99.81% of Cr(VI) from tannery wastewater.
Supporting Evidence
- The hydrogel beads achieved a Cr(VI) removal rate of over 99.81% in real wastewater.
- Batch tests indicated that the optimal pH for Cr(VI) removal was 3.4.
- The maximum adsorption capacity of Cr(VI) was found to be 0.519 mg/g of hydrogel.
Takeaway
This study shows that special beads made from clay and a natural polymer can clean up harmful chromium from dirty water used in leather making.
Methodology
The study used fixed-bed column experiments to test the effectiveness of organobentonite/alginate hydrogel beads in removing Cr(VI) from synthetic and real wastewater samples.
Limitations
The study primarily focused on a specific type of wastewater and may not be generalizable to all tannery effluents.
Digital Object Identifier (DOI)
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