Showing papers in "Dyes and Pigments in 2005"

TL;DR: In this article, Methylene blue was adsorbed on an adsorbent prepared from mature leaves of the Neem tree (Azadirachta indica), and a batch adsorption study was carried out with variable adsorbate concentration, adsorbant amount, pH, and temperature.

TL;DR: In this article, the coagulation/flocculation method was studied as a wastewater treatment technique for the decolourization of residual dyebath effluents after dyeing cotton/polyamide blends using reactive and acid dyes.

TL;DR: The results indicated that powdered peanut hull was an attractive candidate for removing anionic dyes from dye wastewater and conformed the pseudo-first-order rate kinetics.

TL;DR: The textile material impregnated with these natural dyes, however, showed less antimicrobial activity, as uptake of these dyes in textile material is below MIC.

TL;DR: Antimicrobial activity of wool fabric finished with curcumin can be predicted without antimicrobial testing based on the developed relationships, and durability of antimicrobial activity to laundering and to light is discussed.

TL;DR: In this article, the removal of color and total organic carbon (TOC) from simulated dye wastewater containing acid red 14 (ARIA) was experimentally investigated using electro-Fenton reaction with activated carbon fiber (ACF) cathode.

TL;DR: In this article, the results of dye extraction indicate that power ultrasonic is rather effective than conventional heating at low temperature and short time and the effects of dye bath pH, salt concentration, ultrasonic power, dyeing time and temperature were studied and the resulting shades obtained by dyeing with ultrasonic and conventional techniques were compared.

TL;DR: In this article, the authors evaluated and compared the performance of ferrous and aluminum sulfate coagulations and ozonation treatment techniques using the parameters of oxygen demand (COD), color absorbances at 436nm, 525nm and 620nm and Daphnia magna toxicity test.

TL;DR: In this article, the roles played by three major functional groups (amino, carboxyl and hydroxyl groups) in the biomass of peanut hull in adsorption of six dyes were investigated.

TL;DR: Four bacterial isolates capable of decolorizing azo dyes present in soil/sludge samples collected from waste disposal sites of local textile industries were used to develop consortium designated HM-4, which will be used to development bioreactor for achieving effective decolorization of textile industry effluent containing mixture of azos dyes.

TL;DR: In this paper, the authors review some fundamentals of ultrasound, its broad application and gather some new research and studies regarding ultrasound application in textile wet processes, with the emphasis on textile dyeing and the decolouration/mineralization of textile wastewaters.

TL;DR: In this article, the adsorption of Rhodamine B (RB) by rice husk-based porous carbons (RHCs) and commercial carbons from aqueous medium have been studied.

TL;DR: In this article, the decolorization of six azo dyes by means of O3, UV/O3 and UV/H2O2 processes was performed successfully with all of the tested dyes decolorizing effectively.

TL;DR: In this paper, the removal of reactive blue 221 and acid blue 62 anionic dyes onto sepiolite from aqueous solutions has been investigated using parameters such as calcination temperature, pH, ionic strength and temperature.

TL;DR: In this paper, the authors used visible spectroscopy to monitor the progress of dye adsorption at lmax 487 nm by visible spectrograms and showed that the experimental data fitted well to the Langmuir and Freundlich isotherms with a high correlation coefficient (R 2 ).

TL;DR: In this article, the effects of H2O2 dosage, dye initial concentration, and pH on decolourisation kinetics in the continuous circulation photoreactor were investigated.

TL;DR: In this paper, the photocatalytic degradation of two selected dye derivatives, chromotrope 2B (1 ) and amido black 10B (2 ), has been investigated in aqueous suspensions of titanium dioxide under a variety of conditions.

TL;DR: In this article, the photocatalytic degradation of Crystal Violet, a triphenyl methane dye (also known as Basic Violet 3) in aqueous solutions was investigated with Ag + doped TiO 2 under UV and simulated solar light.

TL;DR: One pot synthesis of dibenzoxanthene leuco-dye from the reaction of aromatic aldehydes such as C 6 H 5 CHO, p -CH 3 C 6H 4 CHO, P -NO 2C 6 H 4 CHO with 2-naphthol in acidic condition is described in this paper.

TL;DR: In this paper, the effect of pH, iron loading and initial dye concentration on the decolorization of C.I. Acid Orange 7 by zero-valent iron combined with ultrasound radiation was investigated.

TL;DR: The response of several boronic acid containing fluorophores, which are widely used for sugar determination, towards aqueous cyanide is characterized, offering several modalities for fluorescence based cyanide sensing such as: intensity, lifetime, ratiometric, polarization and modulation fluorescence sensing.

TL;DR: The analysis and characterization of the textile dye C.I. Reactive Blue 4 (RB4) was conducted by spectrophotometry, high performance liquid chromatography (HPLC), as well as advanced mass spectrometric techniques as mentioned in this paper.

TL;DR: In this paper, a new azo compound 5-[3-(1,2,4-triazolyl-azo]-2, 4-dihydroxy-benzaldehyde (TA) and its Schiff bases with 1,3-diaminopropane (TAAP) and 1,6-diminohexane (TAAH) have been synthesized and the bands of diagnostic importance in the IR and the main signals in 1 H NMR spectra are assigned.

TL;DR: A series of homodimer styrylcyanine dyes based on (p-dimethylaminostyryl)pyridinium residues having linkage group of 5 or more carbon atoms was synthesized in this paper.

TL;DR: In this article, the membrane filtration of wastewater after textile printing with reactive dyes is described, which is based on a pilot wastewater treatment plant: ultrafiltration (UF) and reverse osmosis (RO) units.

TL;DR: In this paper, the possibility of using organic salt (sodium edate) in the dyeing of cotton fabrics with reactive dyes in place of inorganic salt in the absence of alkali was investigated.

TL;DR: In this paper, metallophthalocyanines 4, 5 (M = Zn, Co) having diethylaminoethylsulfanyl substituents on peripheral positions were prepared.

TL;DR: In this article, the degradation pathway of Procion Red was found to be somewhat different from Methylene Blue, and it was found that pH ≥ 9.5 and pH ≥ 3.22 were suitable for Methylylene Blue and Procion red, respectively.

TL;DR: In this article, the photodegradation of aqueous solutions of C.I. Reactive Orange 16 was investigated under UV irradiation, and degradation pathways for the formation of the degradation products were proposed.

TL;DR: In this article, the effect of advanced oxidation processes such as ozone/UV, ozone/H2O2 and ozone/ UV/H 2O2 on decolouration of acid dye effluents in the presence of sodium sulphate salt were considered.