Nanofiltration and Reverse Osmosis for Reuse of Indigo Dye Rinsing Waters

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dc.contributor.authorUzal, Nigmet
dc.contributor.authorYilmaz, Levent
dc.contributor.authorYetis, Ulku
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2010
dc.departmentNiğde ÖHÜ
dc.description.abstractA membrane based treatment strategy was developed for the possible recycling of rinsing wastewater from indigo dyeing to the process itself. Performances of three different nanofiltration (NF) (NF 270 and NF 90, Dow Film Tech, USA and NF 99, Alfa Laval, Denmark) and two different reverse osmosis (RO) (HR 98 PP and CA 995 PE, Alfa Laval, Denmark) membranes were investigated with wastewater collected from the first post-rinsing tank of indigo dyeing process of a denim manufacturing plant. Dead-end microfiltration with a 5 mu m filter was employed to remove coarse particles and minimize fouling of further NF and RO membranes. For NF and RO, a lab scale plate-and-frame membrane module was operated at a pressure of 5.07bar and at a 0.62m/s cross-flow velocity. The permeate quality from all the tested NF and RO membranes was acceptable for reuse in terms of COD and color. However, only the permeate from HR 98 PP RO and NF 90 membranes were with an acceptable conductivity. On the other hand, NF 270 membrane was superior to all the other NF and RO membranes in terms of the permeation rate. Flux declines obtained for all membranes were higher than 50% but fouling was not considerable and completely reversible. The good performance of NF 270 in terms of permeate quality (permeate conductivity, color, and COD values were 4.3mS/cm, 8 Pt-Co, and 87mg/L, respectively) together with a higher flux makes this membrane preferable over the other membranes to recycle denim textile rinsing wastewaters.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [CAYDAG-105Y088]
dc.description.sponsorshipThe authors wish to express their gratitude to the Scientific and Technological Research Council of Turkey for funding the project (CAYDAG-105Y088) of which this study forms a part and also to METU Research Fund. Dow FilmTec (Minneapolis) and Alfalaval (Denmark) are thanked for supplying the membrane samples. Special thanks are extended to the textile mill administration for their technical support and for providing wastewater samples.
dc.identifier.doi10.1080/01496390903484818
dc.identifier.endpage338
dc.identifier.issn0149-6395
dc.identifier.issn1520-5754
dc.identifier.issue3
dc.identifier.scopus2-s2.0-77949382449
dc.identifier.scopusqualityQ2
dc.identifier.startpage331
dc.identifier.urihttps://dx.doi.org/10.1080/01496390903484818
dc.identifier.urihttps://hdl.handle.net/11480/4973
dc.identifier.volume45
dc.identifier.wosWOS:000277727100004
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherTAYLOR & FRANCIS INC
dc.relation.ispartofSEPARATION SCIENCE AND TECHNOLOGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectindigo dyeing
dc.subjectnanofiltration
dc.subjectreuse
dc.subjectreverse osmosis
dc.subjecttextile wastewater
dc.titleNanofiltration and Reverse Osmosis for Reuse of Indigo Dye Rinsing Waters
dc.typeArticle

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