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An examination of silver nanoparticles in socks using screening-level life cycle assessment

Abstract

Screening-level life cycle assessment (LCA) can provide a quick tool to identify the life cycle hot spots and focus research efforts to help to minimize the burdens of a technology while maximizing its benefits. The use of nanoscale silver in consumer products has exploded in popularity. Although its use is considered beneficial because of antimicrobial effects, some attention must be given to the potential environmental impacts it could impart on the life cycle of these nanoproducts as production demands escalate. This work examines the environmental impact of including silver nanoparticles in commercially available socks using screening-level LCA. Initial results suggest washing during the use phase contributes substantially more than the manufacturing phase to the product life cycle impacts. Comparison of nanoparticles prepared by either chemical reduction, liquid flame spray (LFS), or plasma arc demonstrate how the type of manufacturing process used for the nanoscale silver can change the resulting life cycle impact of the sock product. The magnitude of this impact will depend on the type of process used to manufacture the nanoscale silver, with LFS having the most impact because of the need for large quantities of hydrogen and oxygen. Although the increased impacts for a single nanoproduct may be relatively small, the added environmental load can actually be a significant quantity when considered at the regional or global production level.

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References

  • Appliance life expectancy: how long should an appliance last? http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm. Accessed 5 Oct 2009

  • Bare JC, Norris GA, Pennington DW, McKone T (2002) TRACI: the tool for the reduction and assessment of chemical and other environmental impacts. J Ind Ecol 6(3):49–78

    Article  Google Scholar 

  • Baumann H, Tillman A (2004) The hitch hiker’s guide to LCA: an orientation in life cycle assessment methodology and application. Studentlitteratur, Sweden

    Google Scholar 

  • Benn TM, Westerhoff P (2008) Nanoparticle silver released into water from commercially available sock fabrics. Environ Sci Technol 42(11):4133–4139

    CAS  Article  Google Scholar 

  • Blaser SA, Scheringer M, MacLeod M, Hungerbühler K (2008) Estimation of cumulative aquatic exposure and risk due to silver: contribution of nano-functionalized plastics and textiles. Sci Total Environ 390(2–3):396–409

    CAS  Google Scholar 

  • Chen J, Lu G, Zhu L, Flagan RC (2007) A simple, versatile mini-arc plasma source for nanocrystal synthesis. J Nanoparticle Res 9(2):203–213

    Article  Google Scholar 

  • Cushing BL, Kolesnichenko VL, O’Connor CJ (2004) Recent advances in the liquid-phase syntheses of inorganic nanoparticles. Chem Rev 104:3893–3946

    CAS  Article  Google Scholar 

  • Cotton: from field to fabric. http://www.cottoncounts.net. Accessed 5 Oct 2009

  • Durfee DJ, Tomlinson JJ (2001) Boston washer study. Energy Division, Oak Ridge National Lab, Oak Ridge

    Google Scholar 

  • Geranio L, Heuberger M, Nowack B (2009) The behavior of silver nanotextiles during washing. Environ Sci Technol 43(21):8113–8118

    CAS  Article  Google Scholar 

  • Guzmán MG, Dille J, Godet S (2009) Synthesis of silver nanoparticles by chemical reduction method and their antibacterial activity. Int J Chem Biomol Eng 2(3):104–111

    Google Scholar 

  • Hilliard HE (1998) Silver. U.S. Geological Survey Commodity Report

  • How long do you expect a pair of socks to last? http://answers.polldaddy.com/poll/1115586/?view=results&msg=voted. Accessed 5 Oct 2009

  • http://www.homedepot.com. Accessed 5 Oct 2009

  • International Standards Organization (2006) Environmental management—life cycle assessment—requirements and guidelines principles and framework, ISO 14044

  • Laundry detergent: full report. http://www.consumersearch.com/laundry-detergent/best-laundry-detergent. Accessed 5 Oct 2009

  • Lave LB, Cobas-Flores E, Hendrickson CT, McMichael FC (1995) Using input-output analysis to estimate economy-wide discharges. Environ Sci Technol 29(9):420A–426A

    CAS  Article  Google Scholar 

  • Makela JM, Keskinen H, Forsblom T, Keskinen J (2004) Generation of metal, metal oxide nanoparticles by liquid flame spray process. J Mater Sci 39:2783–2788

    Article  Google Scholar 

  • Meyer DE, Curran MA, Gonzalez MA (2009) An examination of existing data for the industrial manufacture and use of nanocomponents and their role in the life cycle impact of nanoproducts. Environ Sci Technol 43(5):1256–1263

    CAS  Article  Google Scholar 

  • Mueller NC, Nowack B (2008) Exposure modeling of engineered nanoparticles in the environment. Environ Sci Technol 42(12):4447–4453

    CAS  Article  Google Scholar 

  • PRé Consultants (2009) SimaPro 7.1.8 LCA Software

  • Project on emerging nanotechnologies consumer products inventory. http://www.nanotechproject.org/inventories/consumer/. Accessed 5 Oct 2009

  • Rebitzer G, Ekvall T, Frischknecht R, Hunkeler D, Norris G, Rydberg T, Schmidt W-P, Suh S, Weidema BP, Pennington DW (2004) Life cycle assessment. Part 1: framework, goal and scope definition, inventory analysis, and applications. Environ Int 30(5):701–720

    CAS  Article  Google Scholar 

  • Sahr RC (2009) Consumer price index (CPI) conversion factors 1774 to estimated 2019 to convert to dollars of 1998. http://oregonstate.edu/cla/polisci/faculty-research/sahr/sahr.htm. Accessed 5 Oct 2009

  • Silverwear socks. http://silversocks.com.au/index.php. Accessed 5 Oct 2009

  • Swiss Centre for Life Cycle Inventories (2009) Ecoinvent v2 life cycle inventory database

  • U.S. Census Bureau (2009) MQ315B(08)-5: socks production—summary 2008

  • U.S. Environmental Protection Agency (2006) Life cycle assessment: principles and practice, EPA/600/R-06/060

  • U.S. Environmental Protection Agency and U.S. Department of Energy (2008) ENERGY STAR® program requirements for clothes washers, partner commitments

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Acknowledgments

The authors would like to acknowledge Jane Bare, U.S. EPA, for her help with the use of SimaPro and TRACI.

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Correspondence to David E. Meyer.

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Disclaimer

The U.S. Environmental Protection Agency through its Office of Research and Development funded the research described here. It has not been subjected to Agency review and therefore does not necessarily reflect the views of the Agency, and no official endorsement should be inferred.

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Meyer, D.E., Curran, M.A. & Gonzalez, M.A. An examination of silver nanoparticles in socks using screening-level life cycle assessment. J Nanopart Res 13, 147–156 (2011). https://doi.org/10.1007/s11051-010-0013-4

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  • DOI: https://doi.org/10.1007/s11051-010-0013-4

Keywords

  • Silver nanoparticles
  • Nanomanufacturing
  • Screening-level life cycle assessment
  • EH&S
  • Sustainable design
  • Consumer products