Application of nanoscale zero valent iron (NZVI) for groundwater remediation in Europe
Nanoscale zero valent iron (NZVI) is emerging as a new option for the treatment of contaminated soil and groundwater targeting mainly chlorinated organic contaminants (e.g., solvents, pesticides) and inorganic anions or metals. The purpose of this article is to give a short overview of the practical experience with NZVI applications in Europe and to present a comparison to the situation in the USA. Furthermore, the reasons for the difference in technology use are discussed.
The results in this article are based on an extensive literature review and structured discussions in an expert workshop with experts from Europe and the USA. The evaluation of the experiences was based on a SWOT (strength, weakness, opportunity, threat) analysis.
There are significant differences in the extent and type of technology used between NZVI applications in Europe and the USA. In Europe, only three full-scale remediations with NZVI have been carried out so far, while NZVI is an established treatment method in the USA. Bimetallic particles and emulsified NZVI, which are extensively used in the USA, have not yet been applied in Europe. Economic constraints and the precautionary attitude in Europe raise questions regarding whether NZVI is a cost-effective method for aquifer remediation. Challenges to the commercialization of NZVI include mainly non-technical aspects such as the possibility of a public backlash, the fact that the technology is largely unknown to consultants, governments and site owners as well as the lack of long-term experiences.
Despite these concerns, the results of the current field applications with respect to contaminant reduction are promising, and no major adverse impacts on the environment have been reported so far. It is thus expected that these trials will contribute to promoting the technology in Europe.
KeywordsNanoscale zero valent iron (NZVI) Remediation Groundwater Chlorinated hydrocarbons European perspective
This paper is based on the results of a workshop financed by the EU-FP7 program “ObservatoryNano” (http://www.observatorynano.eu). Barbara Karn, U.S. EPA, United States, is thanked for useful discussions on the applications in the USA.
- Černík M (2010) Chemically supported in situ remedial technologies. VSCHT Praha, Praha, ISBN 978-80-7080-767-5 (in Czech)Google Scholar
- PARS Environmental (2009) An innovative remediation technology for soils and groundwater. Available at http://www.parsenviro.com/nanofeaw-1.html. Accessed 11 July 2011
- Houben G, Kringel R (2007) Remediation of contaminated groundwater with nanoparticles. DECHEMA—In situ Sanierung, Frankfurt am MainGoogle Scholar
- Karn B, Kuiken T, Otto M (2009) Nanotechnology and in situ remediation: a review of the benefits and potential risks. Environ Health Perspect 117:1823–1831Google Scholar
- Klimkova S, Černík M, Lacinova L, Nosek J (2008) Application of nanoscale zero-valent iron for groundwater remediation: laboratory and pilot experiments. NANO Br Rep Rev 3:287–289Google Scholar
- Koschitzky H-P, Trötschler O, Heitmann T, Klaas N (2009) Tracer experiment to determine the groundwater flow between the injection site and the CMT-measuring point at the former industrial laundry Ferster in Bornheim-Roisdorf: technical report nr. VEG39, 2009/11. Institut für Wasserbau, Universität Stuttgart (in German)Google Scholar
- Kuiken T (2010) Cleaning up contaminated waste sites: is nanotechnology the answer? Nano Today 5:6–8. Available at http://www.nanotechproject.org/inventories/remediation_map. Accessed 11 July 2011Google Scholar
- Mueller NC, Nowack B (2010) Nano zero valent iron—THE solution for soil and groundwater remediation? ObservatoryNANO Report. Available at http://www.observatorynano.eu/project/filesystem/files/nZVI_final_vsObservatory.pdf. Accessed 11 July 2011
- Müller C, Löbel E, Rissing P (2006) Remediation with nano-iron—state of the technology. Altlasten Spektrum 2:75–83 (in German)Google Scholar
- U.S. Navy (2010) Description of NZVI. Available at https://portal.navfac.navy.mil/portal/page/portal/navfac/navfac_ww_pp/navfac_nfesc_pp/environmental/erb/nzvi. Accessed 11 July 2011
- Nowack B (2008) Pollution prevention and treatment using nanotechnology. In: Krug H (ed) Nanotechnology, vol 2, Environmental aspects. Wiley-VCS, Weinheim, pp 1–15Google Scholar
- Parbs A, Birke V (2005) State-of-the-art report and inventory on already demonstrated innovative remediation technologies, EuroDemo Report, deliverable reference no. D6.2 part 1. Available at http://www.eurodemo.info/project-information-2/. Accessed 11 July 2011
- Prokop G, Schamann M, Edelgaard I (2000) Management of contaminated sites in Western Europe, Topic Report No. 13/199, European Environment AgencyGoogle Scholar
- Rickerby D, Morrison M (2007) Report from the Workshop on Nanotechnologies for Environmental Remediation, JRC Ispra. Available at http://www.nanowerk.com/nanotechnology/reports/reportpdf/report101.pdf. Accessed 11 July 2011
- U.S. EPA (2001) Cost analysis for selected groundwater cleanup projects: pump and treat systems and permeable reactive barriers, Report 542-R-00-013. U.S. EPA, Washington DCGoogle Scholar
- U.S. EPA (2005) U.S. EPA Workshop on Nanotechnology for Site Remediation, Washington, DC. Available at http://epa.gov/ncer/publications/workshop/pdf/10_20_05_nanosummary.pdf. Accessed 11 July 2011