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 7 of 7 for “"Reactive dyes"”.
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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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Studies in the stability of bonds between fibre-reactive dyes and cellulose
A breakdown of the bond between dyes containing a 2,4-fluoro-5-chloropyrimidinyl reactive group and cellulose occurs when the dyeing is treated at room temperature in a detergent containing sodium perborate or an equivalent amount of hydrogen peroxide and is subsequently exposed to a source of heat …
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Monitoring for sulfonated azo dyes and their degradation products in industrial and municipal wastewater
… are one of the most commonly used textile dyes. They pose an environmental problem because they can be difficult to degrade in municipal and industrial treatment systems and can cause effluent wastewaters to violate color standards. Methods were developed to monitor for three reactive azo …
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WET PROCESSING OF FIBRE BLENDS CONTAINING PRE HARVEST RETTED FLAX
… some cases this also led to increased uptake of reactive dyes, compared with fibres from the later-desiccated crops, but in most cases there were no visible differences between dyed samples containing flax fibres produced by the different agronomic pathways. Enzymatic scouring and bleaching …
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Novel chemical and toxicological studies on textile industry waste streams clean up
… dyeing and finishing plant effluent. To destroy dyes and purify dye house effluents modem photochemical oxidation methods, such as the UV /hydrogen peroxide process, provide an effective treatment technology. Organic contaminants can be completely mineralised by this method but it is relatively …
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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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Synthesis and Characterisation of Layered Double Hydroxides (LDHs) Using Red Mud and their Environmental Applications
… as RM-LDHs and synthesised from Ireland RM and reactive MgO. The optimal experimental parameters were determined, which were CO32- solution environment, L/S ratio = 20, MII/MIII ratio = 3.0 and aging at 70°C for 72 h. RM-LDHs were recognised to be carbonates intercalated Mg2+/(Al3+, Fe3+)-LDH, …