Rejection of submicron sized particles from swimming pool water by a monolithic SiC microfiltration membrane: Relevance of steric and electrostatic interactions
Graphical abstract
Section snippets
Introduction and objectives
Chlorine-based disinfection is widely used in swimming pool water treatment to ensure hygienic safety by inactivation of pathogenic microorganisms, namely viruses, bacteria and protozoa. However, the disinfection effectivity of chlorine is lowered as planktonic microorganisms attach to particles [1], [2], [3], [4], [5] which are introduced into pool water by the bathers [6]. As a result of the lowered disinfection effectivity, the potential of an outbreak in swimming pool facilities increases.
Preparation of stock suspensions
As typical concentrations of microorganisms found in swimming pool water are too low to provide proof of high log-removal values (<100 cfu mL−1 [45], [46]), suspensions of surrogates were used in this study. Surrogates are model particles of the size, surface charge and shape of interest. Two different types of surrogates, MS2 phages and spherical polystyrene fluorescent microspheres were used.
MS2 phages (ATCC 15597-B1) were purchased from the German Collection of Microorganisms and Cell Cultures
ζ-potential of the surrogates and the active membrane layer
Surface properties of relevant virus and bacteria are typically reported for solutions of monovalent cations in a concentration range of 0.01–0.03 M (Table 1). Thus, for the purpose of comparison with previous studies, ζ-potentials discussed in this section were determined in solutions of 0.01 M NaCl (Fig. 3) only.
At neutral conditions, all surrogates suspended in 0.01 M NaCl revealed a negative surface charge. The fluorescent microspheres comprised a significantly lower ζ-potential of −54.6 mV (200
Summary and conclusions
The present work reports the removal effectivity of a novel monolithic SiC MF membrane (carrier, primer and active membrane layer made of SiC) for submicron sized particles. Moreover, the impact of steric and electrostatic interactions between the used particles and the active membrane layer of the SiC membrane on the overall removal of the SiC membrane were identified.
MS2 phages and fluorescent microspheres were used for the rejection experiments. The MS2 phages comprised an isoelectric point
Acknowledgments
The authors wish to thank Dr. Sandro Wolf and Dr. Marina Totrova for their help in MS2 phage analysis and for making it possible to use the micro plate reader. The help of Dr.-Ing. André Lerch for his advice during the construction of the pilot plant and Dr. Ronald Neufert is greatly appreciated. Dipl.-Ing. Susanne Goldberg is thanked for SEM analysis of the SiC membrane.
References (86)
Applied and Theoretical Aspects of Virus Adsorption to Surfaces
Adv. Appl. Microbiol.
(1984)- et al.
Impact of microparticles on UV disinfection of indigenous aerobic spores
Water Res.
(2007) - et al.
Quantification of continual anthropogenic pollutants released in swimming pools
Water Res.
(2014) - et al.
Particles in swimming pool filters-Does pH determine the DBP formation
Chemosphere
(2012) - et al.
Formation of disinfection by-products in indoor swimming pool water: The contribution from filling water natural organic matter and swimmer body fluids
Water Res.
(2011) - et al.
Water treatment for drinking purpose: ceramic microfiltration application
Desalination
(2001) - et al.
Direct river water treatment using coagulation/ceramic membrane microfiltration
Desalination
(2005) - et al.
Treatment of river water by a hybrid coagulation and ceramic membrane process
Desalination
(2011) - et al.
Effect of backflushing conditions on ultrafiltration of board industry wastewaters with ceramic membranes
Sep. Purif. Technol.
(2001) - et al.
Preparation and properties of porous silicon carbide ceramics through coat-mix and composite additives process
Trans. Nonferrous Met. Soc. Chin.
(2011)
Fluorescent microspheres as virion surrogates in low-pressure membrane studies
J. Membr. Sci.
Use of fluorescent silica particles for checking the integrity of microfiltration membranes
J. Membr. Sci.
Virus passage through compromised low-pressure membranes: A particle tracking model
J. Membr. Sci.
The influence of ionic strength on the interaction of viruses with charged surfaces under environmental conditions
J. Colloid Interface Sci.
Antiviral properties of clinoptilolite
Microporous Mesoporous Mater.
Transport of selected bacterial pathogens in agricultural soil and quartz sand
Water Res.
Role of hydrophobic and electrostatic interactions for initial enteric virus retention by MF membranes
J. Membr. Sci.
Definition and quantification of initial anthropogenic pollutant release in swimming pools
Water Res.
Microbiological quality of the water of recreational and rehabilitation pools: a 2-year survey in Naples, Italy
Public Health
Determinants of the microbiological water quality of indoor swimming-pools in relation to disinfection
Water Res.
The development and evaluation of ultrasound for the treatment of bacterial suspensions. A study of frequency, power and sonication time on cultured Bacillus species
Ultrason. Sonochem.
Low-pressure membrane integrity tests for drinking water treatment: A review
Water Res.
New approaches in the design of ceramic and hybrid membranes
J. Membr. Sci.
Zeta-potential measurement using the Smoluchowski equation and the slope of the current-time relationship in electroosmotic flow
J. Colloid Interface Sci.
Membrane characterization by microscopic methods: Multiscale structure
J. Membr. Sci.
Membrane characterization using microscopic image analysis
J. Membr. Sci.
Development of membrane based technology for the separation of coal from organic solvent
Desalination
Application of genetic programming to develop the model for estimating membrane damage in the membrane integrity test using fluorescent nanoparticle
Desalination
Fluorescent dye labeled bacteriophages-a new tracer for the investigation of viral transport in porous media: 1. Introduction and characterization
Water Res.
Zeta Potentials and Isoelectric Points of Biomolecules: The Effects of Ion Types and Ionic Strengths
Int. J. Electrochem. Sci.
Impact of natural organic matter and divalent cations on the stability of aqueous nanoparticles
Water Res.
Seasonal variations in natural organic matter and its impact on coagulation in water treatment
Sci. Total. Environ.
Adsorption of organic acids on magnetite nanoparticles, pH-dependent colloidal stability and salt tolerance
Colloids Surf. Physicochem. Eng. Asp.
Characterisation of aquatic humic and non-humic matter with size-exclusion chromatography-organic carbon detection-organic nitrogen detection (LC-OCD-OND)
Water Res.
Deposition kinetics of bacteriophage MS2 to natural organic matter: Role of divalent cations
J. Colloid Interface Sci.
Monitoring the integrity of capillary membranes by particle counters
Desalination
Efficiency of MS2 phage and Q beta phage removal by membrane filtration in water treatment: Applicability of real-time RT-PCR method
J. Membr. Sci.
Estimation of norovirus removal performance in a coagulation-rapid sand filtration process by using recombinant norovirus VLPs
Water Res.
Comparison of UV and chlorine inactivation of particle and non-particle associated coliform
Water Sci. Technol. Water Supply
Inactivation of Particle-Associated Coliforms by Chlorine and Monochloramine
Appl. Environ. Microbiol.
Chlorine inactivation of Sphingomonas cells attached to goethite particles in drinking water
Appl. Environ. Microbiol.
Treatment of water of swimming-pools and baths. Part 5: Combination of process: flocculation – filtration – adsorption at granular activated carbon – chlorination (in German). Normenausschuss Wasserwesen (NAW) im DIN Deutsche Institut für Normung
Removal of Cryptosporidium-Sized Polystyrene Microspheres from Swimming Pool Water with a Sand Filter with and without Added Perlite Filter Media
J. Environ. Eng.
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