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Grafting of alginates on UF/NF ceramic membranes for wastewater treatment

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dc.contributor.author Athanasekou, CP en
dc.contributor.author Romanos, GE en
dc.contributor.author Kordatos, K en
dc.contributor.author Kasselouri-Rigopoulou, V en
dc.contributor.author Kakizis, NK en
dc.contributor.author Sapalidis, AA en
dc.date.accessioned 2014-03-01T01:33:34Z
dc.date.available 2014-03-01T01:33:34Z
dc.date.issued 2010 en
dc.identifier.issn 0304-3894 en
dc.identifier.uri http://hdl.handle.net/123456789/20469
dc.subject Acidic regeneration en
dc.subject Alginates en
dc.subject Grafting en
dc.subject Metal retention en
dc.subject Silanes en
dc.subject UF/NF membranes en
dc.subject.classification Engineering, Environmental en
dc.subject.classification Engineering, Civil en
dc.subject.classification Environmental Sciences en
dc.subject.other Alginate layer en
dc.subject.other Alginate solutions en
dc.subject.other Binding capacities en
dc.subject.other Cross flows en
dc.subject.other Filtration process en
dc.subject.other Flowthrough en
dc.subject.other Grafting en
dc.subject.other Grafting process en
dc.subject.other Heavy metal ion removal en
dc.subject.other Hybrid inorganic/organic en
dc.subject.other In-process en
dc.subject.other Membrane modification en
dc.subject.other Metal adsorption en
dc.subject.other Metal retention en
dc.subject.other Multi-layered en
dc.subject.other Regeneration capacity en
dc.subject.other Silanisation en
dc.subject.other Single pass en
dc.subject.other Transmembrane pressures en
dc.subject.other Water flux en
dc.subject.other Adsorption en
dc.subject.other Alginate en
dc.subject.other Ceramic membranes en
dc.subject.other Heavy metals en
dc.subject.other Hybrid materials en
dc.subject.other Metal ions en
dc.subject.other Metals en
dc.subject.other Nanofiltration en
dc.subject.other Silanes en
dc.subject.other Ultrafiltration en
dc.subject.other Wastewater en
dc.subject.other Wastewater reclamation en
dc.subject.other Wastewater treatment en
dc.subject.other Water treatment plants en
dc.subject.other Grafting (chemical) en
dc.subject.other alginic acid en
dc.subject.other cadmium en
dc.subject.other inorganic compound en
dc.subject.other organic compound en
dc.subject.other silane en
dc.subject.other adsorption en
dc.subject.other alginate en
dc.subject.other cation en
dc.subject.other ceramics en
dc.subject.other experimental study en
dc.subject.other heavy metal en
dc.subject.other membrane en
dc.subject.other pollutant removal en
dc.subject.other salinization en
dc.subject.other separation en
dc.subject.other ultrafiltration en
dc.subject.other wastewater en
dc.subject.other water flow en
dc.subject.other water treatment en
dc.subject.other adsorption en
dc.subject.other analytical parameters en
dc.subject.other article en
dc.subject.other ceramics en
dc.subject.other chemical modification en
dc.subject.other cross linking en
dc.subject.other crossflow filtration en
dc.subject.other hybrid en
dc.subject.other nanofiltration en
dc.subject.other preservation en
dc.subject.other regeneration en
dc.subject.other ultrafiltration en
dc.subject.other waste water management en
dc.subject.other Alginates en
dc.subject.other Ceramics en
dc.subject.other Membranes, Artificial en
dc.subject.other Metals, Heavy en
dc.subject.other Microscopy, Electron, Scanning en
dc.subject.other Water Pollutants, Chemical en
dc.title Grafting of alginates on UF/NF ceramic membranes for wastewater treatment en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.jhazmat.2010.06.076 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.jhazmat.2010.06.076 en
heal.language English en
heal.publicationDate 2010 en
heal.abstract The mechanism of heavy metal ion removal in processes involving multi-layered tubular ultrafiltration and nanofiltration (UF/NF) membranes was investigated by conducting retention experiments in both flow-through and cross-flow modes. The prospect of the regeneration of the membranes through an acidic process was also examined and discussed. The UF/NF membranes were functionalised with alginates to develop hybrid inorganic/organic materials for continuous, single pass, wastewater treatment applications. The challenge laid in the induction of additional metal adsorption and improved regeneration capacity. This was accomplished by stabilizing alginates either into the pores or on the top-separating layer of the membrane. The preservation of efficient water fluxes at moderate trans-membrane pressures introduced an additional parameter that was pursued in parallel to the membrane modification process. The deposition and stabilization of alginates was carried out via physical (filtration/cross-linking) and chemical (grafting) procedures. The materials developed by means of the filtration process exhibited a 25-60% enhancement of their Cd2+ binding capacity, depending on the amount of the filtered alginate solution. The grafting process led to the development of alginate layers with adequate stability under acidic regeneration conditions and metal retention enhancement of 25-180%, depending on the silane involved as grafting agent and the solvent of silanisation. (C) 2010 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE BV en
heal.journalName Journal of Hazardous Materials en
dc.identifier.doi 10.1016/j.jhazmat.2010.06.076 en
dc.identifier.isi ISI:000282240800080 en
dc.identifier.volume 182 en
dc.identifier.issue 1-3 en
dc.identifier.spage 611 en
dc.identifier.epage 623 en


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