Investigation of the potential of microbial stripping of dyed cotton fabric using white rot fungi

Gümüs

2016

Coloration Technology

Trials have been carried out to investigate the efficiency of ozone treatment in the colour stripping of reactivedyed cotton fabrics. The trials were performed on a specially designed apparatus to inject ozone gas into the liquor passing through a perforated beam with fabric rolls on it, just like a beam dyeing machine with ozone venturi injection. Conventional reductive colour stripping was applied as the control treatment, and ozone treatment was applied for three different application times (15, 30, and 45 min). Trials were performed with seven selected reactive dyes having various chromophores and reactive groups. The results indicate that 45 min ozone treatment yielded the best colour stripping results among the three application times. Furthermore, the colour stripping percentages of the 45 min ozone treatment were higher for four of the tested dyes, the same for one of the tested dyes, and lower for two of the tested dyes compared with the control treatment, which consisted of conventional reductive colour stripping. Colour stripping of 90% and above was achieved for all samples of the 45 min ozone treatment. The chemical oxygen demand values of the colour stripping baths were compared: the average value of the 45 min ozone application baths was 105 mg l À1 , and it was 1993 mg l À1 for the conventional reductive treatment baths. Consequently, a reduction in chemical oxygen demand of almost 94% was achieved by ozone treatment compared with conventional reductive treatment. The strength values of the fabrics after the respective treatments were similar, with a difference of only 3%.

Section: Introductionmentioning

confidence: 99%

Colour stripping of reactive‐dyed cotton by ozone treatment

Gümüs

2016

Coloration Technology

“…Now a days, a lot of research is going to find out ecofriendly ways for the process development in textiles. Decolorization of the reactive dyed fabrics using the enzymes has already been carried out [3]. Advanced oxidation technologies like, ozone, peroxide combined with ozone and peroxide combined with ultrasound has already been carried out for the degradation of the wastewater containing the reactive dyes [4].…”

Section: Introductionmentioning

confidence: 99%

Decolorization of the Reactive Dyed Cotton Fabrics with the Use of Ozone Assisted Eco-technology

Powar¹,

Perwuelz²,

Behary³

et al. 2022

JFBI

The textile coloration sector normally employs the color stripping process for correcting the various faults obtained during the wet processing operations like the printing and dyeing. However, the traditional method for the color stripping carries with it the possibility of grave ecological pollution. The purpose of this work is to investigate the new, ecological method such as ozone based process for the color stripping of the reactive dyed textiles. This novel ozonation process was performed at room temperature with low amount of chemical auxiliaries. The effects of different process parameters like the acidic pH, 45 g/m 3 ozone concentration and the treatment time of 30 minutes on the color stripping was investigated. Additional colorimetric analysis has been studied. The results indicate that the color stripping was achieved effectively at the atmospheric temperature with the ozonation process. This proposed technique was successfully implemented for the color stripping of different reactive dyes on the cotton substrate.

“…ese toxic material released to the environment has been observed in other processes of the textile industry such as finishing or dying process. Nowadays, the development of green textiles is the important subject in industrial and academic researches [1,2]. In this field, research work has summarized the current developments and highlighted those areas where environment-friendly enzymatic textile processing might play an increasingly important role in the textile industry [3].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Smoothness of the Washed Fabric after Laundry with the Washing Machine Based on a New Type‐2 Fuzzy Neural Network

Hesarian

Tavoosi

2022

Complexity

Clothes laundering are necessary during their cycle life, and the mechanical forces exposed to fabrics during laundering were caused to wrinkle. Therefore, in this paper, the wrinkle of the cotton fabric after home laundering was evaluated based on their characteristic. The washing process was done without any softener as toxic material. For this purpose, experimental and theoretical evaluations were conducted. In experiments, the cotton fabrics in various characteristics were washed by washing machine without any softener in special adjustments. The wrinkle of the samples was rated based on the light line method. Theoretical evaluations were studied by the development of a new type-2 fuzzy neural network. In this model the thickness, weight, warp and weft density per inch, warp and weft Tex as linear density, and cover factor of the fabric in warp and weft directions were considered as input parameters and the wrinkle grade of the washed fabric was output. Analysis of the modeling and experimental results illustrates that when eight mentioned parameters were selected as inputs, the mean square error, root mean square error, and mean absolute error of the model were decreased in comparison of the models with two, four, and six inputs. According to this fact, all of the input parameters have an effect on the wrinkle of the cotton fabric after the washing process.