direct dyes
Effect of pH on the Dye Absorption of Jute Fibre Dyed with Direct Dyes
... Jute fibre was dyed with 2% direct dyes in the presence of sodium sulphate as electrolyte at 100°C for 1 h in the fibre-liquor ratio 1:40. The pH of the dye bath was adjusted separately to 4, 7, 8 and 10 by ...
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THE COMPARATIVE STUDY OF TIE AND DYESAMPLES USING DIRECT DYES AND FEVICRYL FABRIC COLORS WITH RELATION TO TIME MANAGEMENT
... both direct dyes and Fevicryl fabric ...with direct dyes for all the techniques took 115minutes to 155 minutes whereas aswithFevicryl fabric colors took 105 minutes to 112 ...
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An Efficient Biosorption of Direct Dyes from Industrial Wastewaters Using Pretreated Sugarcane Bagasse
... textile direct yellow 12 and direct red 81 dyes from aqueous ...of direct yellow 12 whereas the Freundlich model was suitable for adsorption of the direct red ...both dyes was ...
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THE DIMINISHING OF THE CONTENT OF TEXTILE DIRECT DYES AND AUXILIARY COMPOUNDS DURING THEIR CATALYTIC OXIDATION
... dye direct brown (DB), ethylene glycol (EGL) and sodium lauryl sulfate (SLS) under the action of Fenton reagent, in the presence and absence of UV irradiation or under the action of electric current (in the ...
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Phenylene Homologs of Benzidine: Mutagenicity and Use in Organic Dyes and Pigments Synthesis
... in direct dye and pigment ...prepare direct dyes and ...The dyes included analogs of the commercial colorants Congo Red (121, n=0), which were made from DATP ...three dyes validated ...
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Applicative Study (Part I): The Excellent Conditions to Remove in Batch Direct Textile Dyes (Direct Red, Direct Blue and Direct Yellow) from Aqueous Solutions by Adsorption Processes on Low Cost Chitosan Films under Different Conditions
... anionic dyes such as acid, reactive and direct dyes, by electrostatic attraction [14] [15] and also metal anions by ion ...commercial dyes are known in literature and generally they can be ...
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Use of Moringa (Moringa Stenopetala) seed Extract for Removal of some Anionic dyes (Direct and Reactive dyes) in Textile Wastewater
... of dyes such as reactive dyes, direct dyes, mixture of dye wastes and mixture of industrial and dye wastewaters by the natural absorbent ...in direct red and reactive red dyes ...
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Use of Cationized Cotton for Textile Effluent Color Reduction
... diverse dyes. Direct dyes have only a limited wet fastness that can be improved to a certain degree with the various fixing ...the direct dyestuffs are found in the effluent ...reactive ...
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Colorant Database for Cationized Cotton.
... The use of cationized cotton is currently one of the sustainable methods of dyeing cotton with anionic dyes like fiber-reactive and direct dyes. It enables the dyeing of cotton without the use of ...
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Characterization and Dye Effluent Treatment Applications of Mesoporous Activated Carbon Produced from Bio-Diesel Industrial Waste - Jatropha Hull
... basic dyes (Basic Brown 1), which exhibit small molecular weight as shown in ...acidic dyes because BET surface area of CAC is higher than that of ...of Direct dye (Direct Black 19), which has ...
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The Adsorption Character of Kapok Fiber and Reactive Dyeing Technology on Modified Kapok Fiber
... Also, direct dyes have nearly the lowest fastness compared to all the other known dyes, resulting in dyeing defects, such as uneven color and shades, difference in product fastness, and the presence ...
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Comparison of Different Cationizing Agents on Cotton.
... Cotton is the most important natural fiber used in the apparel industry. Cotton is well known for its aesthetic and comfort properties. Mostly, the cotton goods are dyed with reactive dyes and direct ...
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SYNTHESIS OF POLYANILINE SUBSTITUTED DYES AND THE STUDY OF THEIR ELECTRICAL CONDUCTIVITY
... synthesized dyes was observed to be within the range of 10 -7 -10 -8 S m -1 and polyaniline substituted dyes lies within the range of 10 -2 - 10 -4 S m -1 ...the dyes and polyanaline substituted ...
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Adsorption behavior of methyl orange onto wheat bran: Role of surface and pH
... The adsorption of dyes is mainly depedent on the dyes properties and Structure, and to an equal extent on the surface chemistry of the adsorbent .The role of Texture and surface functio[r] ...
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A Comparison of Mordant Dyes and Natural Dyes in Dyeing Cotton Fabric.
... mordant dyes on cotton that had been previously shown to have wool affinity using mordants typically used to dye cotton with natural ...4.1 dyes were applied to cotton using mordant and dye levels reported ...
139
Enzymatic treatment of effluents from textile industries
... Environmental Pollution is becoming a major threat around the world due to the release of toxic and hazardous substances. Anthropogenic influence of water resource is a global problem. The major pollutants such as dye ...
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Indicator washcloth for detecting alkaline washing solutions to prevent dermatitis patients and babies from skin irritation
... water-soluble dyes, one pH indicator dye GJM-503 that shows a colour change from yellow to red and one unreactive blue dye RBBR ...Both dyes are covalently linked to the cellulose of the washcloths in order ...
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Removal of Brilliant Green and Direct Blue Dyes from Wastewater Dependently on the Polarity of Isothiouronium Polyurethane Foam
... The double logarithmic plots of Bangham equation with the time yield perfect linear curves, the correlation values coefficient for sorption of BG and DB are 0.596 and 0.761, respectively (Table 2). This result is showing ...
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Synthesis of Novel Biologically Active Thiazole dyes
... Fastness properties of the synthesized dyes 3a-d on polyester fabrics 154.. Dyes Washing.[r] ...
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Synthesis and Fastness Properties of Disazo Disperse Dyes Derived from 4-Amino-3-Nitrotoluene
... The somewhat unusual conditions needed to produce an azo dye namely: strong acid plus nitrous acid for diazotization, the low temperature necessary for the unstable diazonum salt to exist, and the presence of electron ...
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