Adsorption of Chromium from Water Using Agave Lechuguilla
Author Information
Author(s): Jaime Romero-Gonzilez, Jorge L. Gardea-Torresdey, Jos6 R. Peralta-Videa, Elena Rodriguez
Primary Institution: University of Texas at El Paso
Hypothesis
Agave lechuguilla can effectively remove both Cr(III) and Cr(VI) from aqueous solutions.
Conclusion
Agave lechuguilla biomass can effectively remove trivalent and hexavalent chromium from water, with higher adsorption capacities for Cr(III).
Supporting Evidence
- At pH 4, lechuguilla biomass removed 94% of Cr(III) from solution.
- At pH 2, lechuguilla biomass removed 34% of Cr(VI) from solution.
- The adsorption of Cr(VI) was time-dependent, while Cr(III) adsorption was not.
- A pseudo-second order model best described the kinetics of Cr(VI) adsorption.
- The Freundlich isotherm model fit the adsorption data for Cr(VI), while the Langmuir model fit for Cr(III).
Takeaway
This study shows that a plant called lechuguilla can help clean up water by removing harmful chromium metals.
Methodology
Batch experiments were conducted to study the adsorption of Cr(III) and Cr(VI) at different pH levels and over time.
Limitations
The study may not account for all environmental conditions affecting chromium adsorption.
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