Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Reactive-dye"”.
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Treatment and reuse of reactive dye effluent from textile industry using membrane technology
Submitted in fulfilment of the academic requirements for the degree of Master of Technology in Engineering: Chemical Engineering, Durban University of Technology. Durban, South Africa, 2015.
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STED-4Pi Microscopy
… issue is the photostability of the fluorescent dyes. With the bacterial samples, it can be exemplarily demonstrated that longer depletion pulses increase photostability. An amino-reactive dye, that is stable under STED conditions, enabled the first superresolved mammalian immuno-fluorescence …
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Computer colour matching with fluorescent dyes : The influence of fluorescence on reflectance - concentration relationships for fluorescent dyes, singly and in mixtures, and the effects on the prediction of recipes for use in colour matching.
… computer colour matching involving fluorescent dyes was developed. An ordinary abridged-spectroreflectometer with polychomatic illumination and a simulated D65 xenon light source was employed for all measurements. In addition to the normal K/S constants for non-fluorescent dyes and the …
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The removal of color and DOC from segregated dye waste streams using ozone and Fenton's reagent followed by biotreatment
The decolorization of reactive dye-containing waste streams using oxidizing chemicals and the determination of the effect of the oxidizing agents on the subsequent biotreatment of the streams was investigated. Three oxidizing schemes were chosen for study: molecular ozone, base-promoted ozonation, …
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Effects of fluorine modifiers and gold colloids in enhancing photocatalytic activity of TiO2 under visible light irradiation
… addition to the worrying release of industrial dye containing organic pollutants that threaten the environment, TiO2 can be utilized to degrade dyes in the wastewater. To tune TiO2 into a better photocatalyst with enhanced photocatalytic activity under visible light irradiation, TiO2 was …
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Continuous color removal from concentrated dye waste discharges using reducing and oxidizing chemicals: a pilot plant study
… research was to chemically decolorize selected reactive-dye bath concentrates resulting from exhaustive dyeing, and to remove metals and DOC using Fenton's Reagent or the reductive chemicals, thiourea dioxide and sodium hydrosulfite. For the Fenton's Reagent studies, ferrous sulfate was premixed …
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Organic Self-Assembled Films for Nonlinear Optics: Film Structure, Composition and Kinetics of Film Formation
… another covalently, was studied using PAH and a reactive dye, Procion Brown (PB), which has a significantly higher hyperpolarizability than PCBS. It was found that a high pH, ~10.5, was important for achieving covalent attachment of the PB to the underlying PAH films. This resulted in much higher …
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An evaluation of the environmental fate of reactive dyes
Dyestuffs are widely used industrial chemicals, yet surprisingly little is known about their fate in the environment. The potential modes of transformation and removal of reactive dyes in treatment and in the environment are principally through anaerobic and aerobic biodegradation and …
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Kinetic and mass transfer studies of ozone degradation of organics in liquid/gas-ozone and liquid/solid-ozone systems.
… compounds from different families, namely reactive dye RO16, triclocarban, naphthalene and methanol. In order to understand the mechanisms of ozone reactions with the organic pollutants, a radical scavenger (t-butanol) was used and the pH was varied from 2 to 9. Ozone solubility (CAL*) is …
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Industrial Wastewater Treatment Using Dolomite And Dolomitic Sorbents
… effluent problems within Ireland, including dye effluent from the carpet and textile industry, effluent containing phenol and phenolic compounds in the chemical industry and effluent containing metals in the ship building and repair industry.<br/><br/>1.2 - The objectives for this …
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Enzymatic treatment of polyamide 6.6 fibres
… one is based on the reaction of a specific wool reactive dye with the terminal amino groups at the surface of the treated fabrics. In this work it was proved that the enzymatic hydrolysis with cutinase or protease leads only to surface modifications, being the reaction selective. Studies were …