| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 918.73 KB | Adobe PDF |
Advisor(s)
Abstract(s)
Zero-valent iron nanoparticles (nZVIs) are often used in environmental remediation. Their high surface area
that is associated with their high reactivity makes them an excellent agent capable of transforming/degrading
contaminants in soils and waters. Due to the recent development of green methods for the production of
nZVIs, the use of this material became even more attractive. However, the knowledge of its capacity to degrade
distinct types of contaminants is still scarce.
The present work describes the study of the application of green nZVIs to the remediation of soils contaminated
with a common anti-inflammatory drug, ibuprofen. The main objectives of this work were to produce
nZVIs using extracts of grape marc, black tea and vine leaves, to verify the degradation of ibuprofen in aqueous
solutions by the nZVIs, to study the remediation process of a sandy soil contaminated with ibuprofen
using the nZVIs, and to compare the experiments with other common chemical oxidants.
The produced nZVIs had nanometric sizes and were able to degrade ibuprofen (54 to 66% of the initial
amount) in aqueous solutions. Similar remediation efficiencies were obtained in sandy soils. In this case
the remediation could be enhanced (achieving degradation efficiencies above 95%) through the complementation
of the process with a catalyzed nZVI Fenton-like reaction. These results indicate that this remediation
technology represents a good alternative to traditional and more aggressive technologies.
Description
Keywords
Ibuprofen Chemical treatment Soil remediation Zero-valent iron nanoparticles Green production
Citation
Publisher
Elsevier