<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Amongst all of the reducing agents that can be used in environmental remediation, zero valent iron (ZVI) is one of the most common due to its environmental acceptance, high reaction rate, good availability, and long-term stability. Moreover, ZVI mobility, stability and reactivity can be enhanced by the application of a DC electric current, <italic>ie</italic> electrokinetics (EK). In the study, six various slurries containing different ZVI were tested for their efficacy for chlorinated ethenes and ethanes degradation. Chlorinated compound concentrations, pH, oxidation-reduction potential (ORP) and conductivity were determined during the long-term kinetic test. Kinetic rate constants calculated for the degradation of three chlorinated ethenes (PCE, TCE and cis-DCE) concluded that EK brings substantial contribution to chlorinated compounds degradation. Nano-scale zero valent iron STAR had the highest reaction rates compare to the other ZVI tested. The performed study could serve as a preliminary assessment of various available ZVI before in-situ application.</p></abstract>

Amongst all of the reducing agents that can be used in environmental remediation, zero valent iron (ZVI) is one of the most common due to its environmental acceptance, high reaction rate, good availability, and long-term stability. Moreover, ZVI mobility, stability and reactivity can be enhanced by the application of a DC electric current, ie electrokinetics (EK). In the study, six various slurries containing different ZVI were tested for their efficacy for chlorinated ethenes and ethanes degradation. Chlorinated compound concentrations, pH, oxidation-reduction potential (ORP) and conductivity were determined during the long-term kinetic test. Kinetic rate constants calculated for the degradation of three chlorinated ethenes (PCE, TCE and cis-DCE) concluded that EK brings substantial contribution to chlorinated compounds degradation. Nano-scale zero valent iron STAR had the highest reaction rates compare to the other ZVI tested. The performed study could serve as a preliminary assessment of various available ZVI before in-situ application.

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Centre for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec 1, Czech Republic, phone +420 485 353 006

Ecological Chemistry and Engineering S

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Amongst all of the reducing agents that can be used in environmental remediation, zero valent iron (ZVI) is one of the most common due to its environmental...

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Data publikacji: 22 sty 2016

Zakres stron: 577 - 587

DOI: https://doi.org/10.1515/eces-2015-0034

Słowa kluczowe
zero valent iron, nano zero valent iron, electro-activation, chlorinated aliphatics, remediation

© 2015 Stanisław Wacławek et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Data publikacji: 22 sty 2016

Zakres stron: 577 - 587

DOI: https://doi.org/10.1515/eces-2015-0034

Słowa kluczowezero valent iron, nano zero valent iron, electro-activation, chlorinated aliphatics, remediation

© 2015 Stanisław Wacławek et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Słowa kluczowe
zero valent iron, nano zero valent iron, electro-activation, chlorinated aliphatics, remediation