1887

Chapter 84 : Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience

MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Ebook: Choose a downloadable PDF or ePub file. Chapter is a downloadable PDF file. File must be downloaded within 48 hours of purchase

Buy this Chapter
Digital (?) $15.00

Preview this chapter:
Zoom in
Zoomout

Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience, Page 1 of 2

| /docserver/preview/fulltext/10.1128/9781555817985/9781555812300_Chap84-1.gif /docserver/preview/fulltext/10.1128/9781555817985/9781555812300_Chap84-2.gif

Abstract:

This chapter evaluates the efficacy of copper-silver ionization that is reported to be a useful tool to control growth of . Copper-silver ionization was tested over a period of 1 year as the first step in a multiple-barrier system controlling . In Germany, additions of silver and copper to drinking water need special approval of the Ministry of Health and are permitted only with substantial restrictions. Measurable effects in reduction can be achieved only at silver concentrations significantly exceeding the German standard of 10 μg/liter. Copper values exceeded national standards, preventing a short-term high dosing of silver. Concentrations of both metals vary depending on water flow. Silver cannot be analyzed directly with in the system, causing a considerable feedback delay. counts stayed above targeted values (working standard, counts <1 CFU/ml) . Reduction is not as efficacious as in hot water systems maintaining about 60№C. Long-term effects (e.g., development of heavy-metal resistance) of adding silver and copper are yet to be evaluated.

Citation: Mathys W, Hohmann C, Junge-Mathys E. 2002. Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience, p 419-424. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch84

Key Concept Ranking

Pulsed-Field Gel Electrophoresis
0.44263053
Legionella dumoffii
0.4072506
0.44263053
Highlighted Text: Show | Hide
Loading full text...

Full text loading...

Figures

Image of FIGURE 1
FIGURE 1

Effect of silver-copper ionization on silver concentrations in a German hospital's hot water system. Phase 0, period before installation of unit; phase 1, period after starting ionization; phase 2/3, period after first/second cleaning of electrodes; phase 4, period after feeding the unit with softened water; phase 5, after third cleaning of electrodes; phase 6, after deactivating and removing unit.

Citation: Mathys W, Hohmann C, Junge-Mathys E. 2002. Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience, p 419-424. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch84
Permissions and Reprints Request Permissions
Download as Powerpoint
Image of FIGURE 2
FIGURE 2

Effect of silver-copper ionization on counts in a German hospital's hot water system. Phase 0, period before installation of unit; phase 1, period after starting ionization; phase 2/3, period after first/second cleaning of electrodes; phase 4, period after feeding the unit with softened water; phase 5, after third cleaning of electrodes; phase 6, after deactivating and removing unit.

Citation: Mathys W, Hohmann C, Junge-Mathys E. 2002. Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience, p 419-424. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch84
Permissions and Reprints Request Permissions
Download as Powerpoint

References

/content/book/10.1128/9781555817985.chap84
1. Biurrun, A.,, L. Caballero,, C. Pelaz,, E. Leon,, and A. Gago. 1999. Treatment of a Legionella pneumophila-colonized water distribution system using copper-silver ionization and continuous chlorination. Infect. Control Hosp. Epidemiol. 20:426428.
2. Goetz, A.,, and V. L. Yu. 1997. Copper-silver ionization: cautious optimism for Legionella disinfection and implications for environmental cul-turing. Am. J. Inject. Control 25:449451.
3. Landeen, L. K.,, M. T. Yahya,, S. M. Kutz,, and C. P. Gerba. 1989. Microbiological evaluation of coppensilver disinfection units for use in swimming pools. Water Sci. Technol. 21:267270.
4. Landeen, L. K.,, M. T. Yahya,, S. M. Kutz,, and C. P. Gerba. 1989. Efficacy of copper and silver ions and reduced levels of free chlorine in inactivation of Legionella pneumophila. Applied Environ. Microbiol. 55:30453050.
5. Lin, Y. E.,, J. E. Stout,, V. L. Yu,, and R. D. Vidic. 1998. Disinfection of water distribution systems for Legionella. Semin. Respir. Infect. 13: 147159.
6. Lin, Z.,, J. E. Stout,, L. Tedesco,, M. Boldin,, C. Hwang,, W. F. Diven,, and V. L. Yu. 1994. Controlled evaluation of copper-silver ionization in eradicating Legionella pneumophila from a hospital water distribution system. J. Infect. Dis. 169: 919922.
7. Liu, Z.,, J. E. Stout,, M. Boldin,, J. Rugh,, W. F. Diven,, and V. L. Yu. 1998. Intermittent use of copper-silver ionization for Legionella control in water distribution systems: a potential option in buildings housing individuals at low risk of infection. Clin. Infect. Dis. 26:138140.
8. Mathys, W.,, M. C. Deng,, J. Meyer,, and E. Junge-Mathys. 1999. Fatal nosocomial Legionnaires' disease after heart transplantation: clinical course, epidemiology and prevention strategies for the highly immunocompromized host. J. Hosp. Infect. 43:239248.
9. Miuetzner, S.,, R. C. Schwille,, A. Farley,, E. R. Wald,, J. H. Ge,, S. J. States,, T. Libert,, and R. M. Wadowsky. 1997. Efficacy of thermal treatment and copper-silver ionization for controlling Legionella pneumophila in high-volume hot water plumbing systems in hospitals. Am. J. Infect. Control 25:452457.
10. Rohr, U.,, M. Senger,, F. Selenka,, R. Turley,, and M. Wilhelm. 1999. Four years of experience with silver-copper ionization for control of Legionella in a German university hospital hot water plumbing system. Clin. Infect. Dis. 29:15071511.
11. Thurman, R. B.,, and C. P. Gerba. 1989. The molecular mechanisms of copper and silver ion disinfection of bacteria and viruses. Crit. Rev. Environ. Control 18:295315.
12. Walker, J. T.,, A. A. West,, M. Morales,, S. Ives,, and N. Pavey,. 1997. Controlling Legionella and biofouling using silver and copper ions: fact or fiction?, p. 279286. In J. Wim-penny,, P. Handley,, P. Gilbert,, H. Lappin-Scott,, and M. Jones (ed.), Biofilms. Community Interactions and Control. British Biofilm Club, Cardiff, United Kingdom.
13. Yahya, M. T.,, L. K. Landeen,, S. M. Kutz,, and C. P. Gerba. 1989. Swimming pool disinfection. An evaluation of the efficacy of copper: silver ions. J. Environ. Health 51:282285.

Tables

Generic image for table
TABLE 1

Summary statistics of counts, silver, and copper levels in a German hospital's hot water system

Citation: Mathys W, Hohmann C, Junge-Mathys E. 2002. Efficacy of Copper-Silver Ionization in Controlling in a Hospital Hot Water Distribution System: a German Experience, p 419-424. In Marre R, Abu Kwaik Y, Bartlett C, Cianciotto N, Fields B, Frosch M, Hacker J, Lück P (ed), . ASM Press, Washington, DC. doi: 10.1128/9781555817985.ch84

This is a required field
Please enter a valid email address
Please check the format of the address you have entered.
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error