Ultrafiltration
81 - 90 of 187 results
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This laboratory scale study investigated the effectiveness of ultrafiltration (UF) technology for treatment of refinery wastewater using powdered activated carbons (PACs) and coagulant. Flux decline, removal rates of total organic compounds (TOCs) and the possibilities of membrane cleaning during in
Desalination 174 (2005)
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Unstirred dead-end ultrafiltration of a silica suspension was studied using a fully retentive membrane. A constant pressure filtration approach was used to analyze steady-state flux data. The effects of operating conditions such as applied pressure and bulk concentration on specific resistance, thic
Desalination 172 (2005)
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Fouling layer formation in membrane processes and the role of bacteria in it were investigated using rRNA-targeted fluorescently labelled oligonucleotides. In a laboratory-scale flat-channel test unit, nano- and ultrafiltration of an oligotrophic reservoir water were performed. The bacterial composi
Desalination 172 (2005)
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Fouling of membranes by colloidal organic and inorganic particles continues to be documented as the most common and challenging obstacle in attaining stable continuous operation of reverse osmosis (RO) and ultrafiltration (UF) systems. Much current research is being conducted on physical parameters
Desalination 172 (2005)
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The effects of the composition of a surfactant colloidal solution containing nonylphenylpolyoxyethylene ether, the racemic mixture of L,D-phenylalanine, trans-4-hydroxy-L-proline and/or their copper complexes upon the flux of permeate and the resistance of the hydrophilic membrane and additional lay
Desalination 172 (2005)
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A mathematical model for the simulation of ultrafiltration process has been developed in this study. Ultrafiltration tests were carried out on an aqueous solution of lignosulphonate — a natural polymer — employing a pilot-scale ultrafiltration configuration that accommodates spiral wound membranes.
Desalination 171 (2005)
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A reuse system for carwash water with a cellulose acetate (CA), hollow-fiber-type ultrafiltration membrane with the aid of flocculation and activated carbon treatments was proposed. The multi-blended flocculating agent containing bentonite, Al2(SO4)3, sodium alginic acid and a cationic polyacrylamid
Desalination 169 (2004)
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For a specific textile finishing company strategies for water recycling and recovery of valuable chemicals have been developed. A comprehensive study of the company’s resource consumption and emission profile was performed. On this basis selected end of the pipe and integrated recycling options were
Desalination 171 (2004)
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The potential of direct membrane filtration on either ultrafiltration (30, 200 and 400 kDa MWCO) or nanofiltration (200 Da MWCO) membranes was studied as a method of treatment of low load graywater for on site reuse. The graywater collected from a sports center’s public showers and characterized for
Desalination 170 (2004)
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Solvent-resistant hollow-fiber UF membranes were selected by measurement of fiber swelling and treatability studies on spent solvent cleaning rinse. The experimental results indicated that the membranes made of both cellulose acetate (CA) and polyacrylonitrile (PAN) materials could tolerate the solv
Desalination 170 (2004)
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