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Environmental remediation processes by zero valence copper: reaction mechanisms
Paloma Viana Ferreira de Sousa1, André Fernando de Oliveira1, Antônio Alberto da Silva2
1Chemistry Department, Universidade Federal de Viçosa, Viçosa, MG, 36570-000, Brazil.
Environmental Science and Pollution Research International
|April 12, 2019
Summary
Zero-valent copper (Cu(0)) effectively removes pollutants, but its application is limited by toxicity concerns. This review details Cu(0) reaction mechanisms, highlighting its redox behavior for pollutant removal.
Area of Science:
- Environmental Science
- Materials Science
- Chemistry
Background:
- Zero-valent copper (Cu(0)) shows promise for pollutant removal.
- Limited research exists due to toxicity and deposition concerns.
- Understanding reaction mechanisms is crucial for effective application.
Purpose of the Study:
- To conduct a comprehensive review of Cu(0) applications for pollutant removal.
- To elucidate the reaction mechanisms involving adsorption, oxidation, and reduction.
- To identify knowledge gaps and future research directions.
Main Methods:
- Literature review of studies on Cu(0) for pollutant removal.
- Analysis of characterization techniques and experimental conditions.
- Evaluation of Cu(0) in various forms (pure, with agents, supported).
Main Results:
- Cu(0) removal processes are primarily explained by the redox behavior of copper.
- Various conditions (oxidizing/reducing agents, irradiation, ultrasound, polymer supports) were examined.
- The exclusive participation of Cu(0) in removal mechanisms was verified.
Conclusions:
- Cu(0)'s redox properties are key to pollutant removal.
- Further research is needed on the redox behavior of contaminants.
- Addressing toxicity and deposition issues can enhance Cu(0) applications.
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