Polysulfone ultrafiltration membranes impregnated with silver nanoparticles show improved biofouling resistance and virus removal

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dc.contributor.advisorAlvarez, Pedro J.en_US
dc.creatorZodrow, Katherine Reyen_US
dc.date.accessioned2011-07-25T01:38:27Zen_US
dc.date.available2011-07-25T01:38:27Zen_US
dc.date.issued2009en_US
dc.description.abstractBiofouling and virus penetration are two significant obstacles in water treatment membrane filtration. Biofouling reduces membrane permeability, increases energy costs, and decreases the lifetime of membranes. In order to effectively remove viruses, nanofiltration or reverse osmosis (both high energy filtration schemes) must be used. Thus, there is an urgent demand for low pressure membranes with anti-biofouling and anti-viral properties. The antibacterial properties of silver are well-known, and silver nanoparticles (nAg) are now incorporated into a wide variety of consumer products for microbial control. In this study, nAg incorporated into polysulfone ultrafiltration membranes (nAg-PSf) exhibited antimicrobial properties towards a variety of bacteria, including Escherichia coli K12 and Pseudomonas mendocina KR1, and enhanced the removal of MS2 bacteriophage. Nanosilver incorporation also increased membrane hydrophilicity, reducing the potential for other types of membrane fouling. Thus, the incorporation of nAg into polysulfone ultrafiltration membranes increases both membrane efficiency and effectiveness.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS C.E. 2009 ZODROWen_US
dc.identifier.citationZodrow, Katherine Rey. "Polysulfone ultrafiltration membranes impregnated with silver nanoparticles show improved biofouling resistance and virus removal." (2009) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/61826">https://hdl.handle.net/1911/61826</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/61826en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectEnvironmental engineeringen_US
dc.titlePolysulfone ultrafiltration membranes impregnated with silver nanoparticles show improved biofouling resistance and virus removalen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical and Biomolecular Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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