Abstract
The presented study provides comparison of three separate nZVI field tests using NANOFER STAR, NZVI-C3, and NANOFER STAR modified by carboxymethyl cellulose (CMC). These field tests were conducted on sites contaminated with chlorinated ethenes. All three applications were performed via a direct-push technique on the same site one after another. The particular groundwater was monitored for chlorinated ethenes and their nontoxic degradation products. The test took about 90 days in each case. The most successful material in the study was NANOFER STAR, degrading 84% of present trichloroethene or 60% of vinyl chloride. Other materials used in the study achieved far lower efficiency. NZVI-C3, a carbon-iron material fabricated in laboratory volumes by Palacký University Olomouc, was characteristic for the combination of reduction and sorption. Modification of nanoscale zero-valent iron particles by CMC resulted in not only higher mobility of the material but also a significant decrease in its reactivity.
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Stejskal, V., Vacková, N. (2020). Field Study I: In Situ Chemical Reduction Using Nanoscale Zero-Valent Iron Materials to Degrade Chlorinated Hydrocarbons. In: Filip, J., Cajthaml, T., Najmanová, P., Černík, M., Zbořil, R. (eds) Advanced Nano-Bio Technologies for Water and Soil Treatment. Applied Environmental Science and Engineering for a Sustainable Future. Springer, Cham. https://doi.org/10.1007/978-3-030-29840-1_5
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