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Showing 1 to 18 of 18 for “"Color Removal"”.
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Color removal from pulp and paper wastes by coagulation
… an appropriate treatment approach to remove color and organic carbon from the pulp and paper wastes from the Union Camp Corporation, Franklin, Va. Based on a preliminary analysis of the data collected during this research, either alum or ferric chloride may be used to remove color from pulp …
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Color removal in textile dye wastewaters by means of coagulation
In textile mill wastewater effluent, highly colored and stable dyes are formidable and somewhat insusceptible to removal treatment processes. Recent governmental regulations have made it necessary to remove most color before discharging the treated wastewater to surface waters. Chemical coagulation …
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Color Removal From Pulp Mill Effluent Using Coal Ash Produced From Georgia Power Coal Combustion Plants
… generated by pulp mills. Pulp mill effluent discolors surface waters into which it is discharged, and has been proven to negatively impact the dissolved oxygen and carbon necessary for aquatic life. The proposed solution is a cost-effective adsorption treatment using an inexpensive but …
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Continuous color removal from concentrated dye waste discharges using reducing and oxidizing chemicals: a pilot plant study
… The object of the 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 …
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Investigation of Color Removal by Chemical Oxidation for Three Reactive Textile Dyes and Spent Textile Dye Wastewater
… with hydrogen peroxide (UV/H₂O₂) for decolorizing three reactive azo dyes (sultan red, indigo blue and cypress green) and treated textile-manufacturing wastewater. The objective was to determine the best treatment for reducing color to the Virginia Pollutant Discharge Elimination System …
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Use of polymers and a surfactant in the treatment of Kraft process wastewater
… polymers, and a surfactant, EHDABr, in the color removal treatment of Kraft pulp and paper wastewater. Four polymers were evaluated for their color removal performance by jar test procedures. The polymers removed between 77 and 87% of the wastewater color. The affect of pH upon polymer …
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Pilot-scale study on anaerobic/aerobic treatment of a textile dye wastewater
… an anaerobic/aerobic treatment scheme for removal of color from textile dye waste waters mixed with municipal sewage. Treatments were evaluated with and without addition of a reducing agent (thiourea dioxide) after anaerobic treatment utilizing 6 and 12 hour anaerobic hydraulic retention …
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The effect of various oxidants on water treatment processes
… of these oxidants upon turbidity, TOC, and color removal, as well as reduced manganese oxidation. Studies were conducted with an experimental water with enhanced TOC levels. Experimentation was accomplished by a series of jar tests in which solution pH, coagulant dose, and oxidant dose were …
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Pretreatment and biodegradation of wastewater from a textile dyeing and finishing industry
Pretreatment is a common approach for removing color and reducing the organic load of textile dyeing and finishing wastewater. Subsequent aerobic treatment is often employed to complete organic removal as well as remove toxicity and metals. The wastewater from the textile dyeing and finishing …
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Removal of refractory contaminants from mature landfill leachate utilizing fungi and evaluation of lignocellulosic enzymatic activity
… was to evaluate the refractory contaminants removal efficiency from the MLL deploying selected fungi and to investigate their lignocellulosic enzymatic activities. Among the six deployed fungal species (Trichoderma asperellum, Cladosporium sp., Penicillium sp., Tyromyces chioneus, Bjerkandera …
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Biological Treatment of a Synthetic Dye Water and an Industrial Textile Wastewater Containing Azo Dye Compounds
… primary objective was to reduce the wastewater color to an intensity that complies with the Virginia Pollutant Discharge Elimination System (VPDES) permit level. This level is set at 300 American Dye Manufactures Institute (ADMI) units. Further objectives were to achieve reductions in the total …
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Characterization and treatment of spent vegetable tan liquors
… was desirable because it effectively reduced the color and suspended solids of the tanning waste. Aeration was thought to be a possible means of reducing the Chemical Oxygen Demand of the waste by biological stripping of the pyrogallol compound in the spent waste. Samples collected from the …
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The treatment of a munitions manufacturing waste with lime, chlorine and permanganate
… Silas-Mason reactable substances but created a color problem. The oxidants were employed to remove the color developed by the lime addition. Optimum color removal occurred if the chlorine was added to the waste at pH 6. The potassium permanganate treatment system was limited by the color …
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Treatment of textile wastes utilizing a lime-polyelectrolyte system
The feasibility of the excess lime process for color removal from textile dye wastes was evaluated. The lime dosages were optimized by using anionic, cationic, and nonionic polyelectrolytes as coagulant aids. The effect of the process on the removal of organic pollutants was determined. The time …
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Fate of azo dyes in sludges
The removal of color and organic matter contributed by the azo dye, 'Reactive Black 5,’ and Navy 106 wash water from a textile mill were studied in sludges under aerobic and anaerobic conditions. The potential of the dyes to leach from landfills was also investigated using Toxicity Characteristic …
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Physicochemical and biological treatability study of textile dye wastewater
The textile industry discharges a highly colored wastewater characterized by high organic levels. Industrial wastewater with these characteristics can be harmful to receiving streams and municipal plants, and must be treated prior to discharge. In this project, a yam dyeing facility was studied …
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Functional application of iron-based metallic glasses in catalysis technology: Design and mechanism
… (L16(45)) experimental methodology. Nearly 100% color removal is achieved within 20 min under premium experimental control. The effects of catalyst dosage, dye concentration, peroxides concentration, light intensity and pH on dye degradation efficiency are fully discussed. The production of high …
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Simulated solar light assisted photocatalytic degradation of organic matters
… of the nanosized TiO2 were investigated. The color removal rate, decrease rate of total organic carbon (TOC), and production rate of sulfate ions in aqueous solution were determined. Acid red 14 could be decolorized and mineralized efficiently with this nanosized TiO2 under simulated solar …