A Study on Antimicrobial Effects of Nanosilver for Drinking Water Disinfection (eBook)

Xu Yang (Autor)

eBook Download: PDF

2016 | 1st ed. 2017
XXII, 71 Seiten
Springer Singapore (Verlag)
9789811029028 (ISBN)

Infos

This thesis examines the feasibility of using silver nanoparticles (AgNPs) as a viable disinfectant. It explores the opportunities and challenges of using AgNPs as an antimicrobial agent, and includes the latest research findings. It compares three kinds of AgNPs with regard to their antibacterial and antiviral effects; their sustainability in real water matrices; and their antiviral mechanisms. The outcome of this research equips the water industry with a better understanding of the capacity, extent and mechanisms of nanosilver disinfection. It is of interest to graduate students, academics and researchers in the area of nanotechnology and environmental engineering. 



Xu Yang was conferred his PhD degree by National University of Singapore(NUS) in 2015. Before joining NUS, he gained his B.Sc in Chemistry in Fudan University, P. R. China. He also spent two years as a lab assistant when he was an undergraduate. The experience greatly spurned his interest in nanomaterial and led him to pursue a PhD in the Department of Civil and Environmental Engineering in NUS. Xu Yang is currently working as an engineer in a construction wastewater treatment and environmental consulting firm based in China.

Inhalt

TABLE OF CONTENTSACKNOWLEDGEMENT    ISUMMARY    VLIST OF TABLES    VIIILIST OF FIGURES    IXLIST OF ABBREVIATIONS    XICHAPTER 1    INTRODUCTION    11.1    DRINKING WATER SAFETY    11.2    CURRENT AND EMERGING WATERBORNE PATHOGENS    21.2.1    Bacterial pathogens    21.2.2    Viral pathogens    31.3    SELECTION OF DISINFECTION STRATEGIES    41.3.1    Chlorine and related chemicals    51.3.2    Ozone    61.3.3    Ultraviolet irradiation    71.4    SILVER AS ANTIMICROBIAL AGENT    91.5    STATE-OF-THE-ART    111.6    OBJECTIVES AND RESEARCH SCOPE    141.7    ORGANIZATION OF DISSERTATION    17CHAPTER 2    LITERATURE REVIEW    192.1    SYNTHESIS OF SILVER NANOPARTICLES    192.1.1    Chemically-Synthesized silver nanoparticles    202.1.2    Biologically-synthesized silver nanoparticles    242.2    ANTIMICROBIAL EFFECTS OF SILVER NANOPARTICLES    282.2.1    Effects of silver nanoparticles’ properties    292.2.2    Effects of water matrices    312.2.3    Antibacterial and antiviral effects of silver nanoparticles    342.3    ANTIMICROBIAL MECHANISM OF SILVER IONS AND SILVER NANOPARTICLES    422.3.1    Mechanisms of aqueous silver disinfection    422.3.2    Antibacterial mechanisms of silver nanoparticles disinfection    442.3.3    Antiviral mechanisms of silver nanoparticles disinfection    492.4    CONTINUOUS DISINFECTION SYSTEM WITH SILVER NANOPARTICLES    51CHAPTER 3    MATERIALS AND METHODS    553.1    SILVER NANOPARTICLES    553.1.1    Chemically-synthesized silver nanoparticles    553.1.2    Biologically-synthesized silver nanoparticles    563.1.3    Characterization of silver nanoparticles    563.2    MICROORGANISMS CULTIVATION AND ENUMERATION    583.2.1    Incubation of E. coli and MS2 coliphage    583.2.2    Enumeration of E. coli and MS2 coliphage    583.3    DISINFECTION EXPERIMENTS    593.4    EFFECTS OF WATER MATRICES    603.5    MECHANISM STUDY    613.5.1    Mode of action of nanosilver    613.5.2    Viral damage    633.6    CONTINUOUS FLOW SYSTEM WITH NANOSILVER    663.7    DATA INTERPRETATION    69CHAPTER 4    RESULTS AND DISCUSSION    704.1    SELECTION OF DIFFERENT NANOSILVER    704.1.1    Characterization of different nanosilver    704.1.2    Comparison of effects of different nanosilver against E. coli    734.1.3    Comparison of effects of different nanosilver against MS2 coliphage    754.1.4    Viral inactivation profile of biologically-synthesized silver nanoparticles    774.2    EFFECTS OF WATER MATRICES    784.2.1    Effects of chloride    794.2.2    Effects of Ca/Mg/ionic strength    804.2.3    Effects of TOC    834.2.4    Effects of pH    844.3    MECHANISM STUDY OF VIRAL INACTIVATION    854.3.1    Mode of action of nanosilver    854.3.2    Viral damage caused by nanosilver    924.4    CONTINUOUS FLOW SYSTEM WITH NANOSILVER    954.4.1    Continuous flow system to remove E. coli    954.4.2    Continuous flow system to remove MS2 coliphage    99CHAPTER 5    SUMMARY, CONCLUSIONS AND RECOMMENDATIONS    1025.1    SUMMARY    1025.2    CONCLUSIONS    1035.3    RECOMMENDATIONS    106LIST OF PUBLICATIONS    108REFERENCES    109APPENDIX    121

Produkt-Details

• Erscheint lt. Verlag: 21.10.2016
• Reihe/Serie: Springer Theses
• Reihe/Serie: Springer Theses
• Zusatzinfo: XXII, 71 p. 26 illus., 4 illus. in color.
• Verlagsort: Singapore
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Biologie ► Ökologie / Naturschutz
• Themenwelt: Naturwissenschaften ► Geowissenschaften ► Hydrologie / Ozeanografie
• Themenwelt: Technik ► Umwelttechnik / Biotechnologie
• Schlagworte: Antiviral Mechanism • Escherichia Coli Antibacterial • marine and freshwater sciences • MS2 Bacteriophage Antibacterial • Nanosilver Antigenicity Damage • Nanosilver Genome Damage • Nanosilver Viral Capsid • Silver-Cysteine Complex • Silver Nanoparticles (AgNPs) • water industry and water technology • Water Matrices • Water Treatment Technology
• ISBN-13: 9789811029028 / 9789811029028