Journal articles: 'Dyes and dyeing Waste disposal'

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Al-Etaibi, Alya M., and Morsy Ahmed El-Apasery. "Ultrasonic Dyeing of Polyester Fabric with Azo Disperse Dyes Clubbed with Pyridonones and Its UV Protection Performance." Chemistry 3, no. 3 (August 24, 2021): 889–95. http://dx.doi.org/10.3390/chemistry3030065.

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The textile sector is closely linked to environmental pollution as a result of the use of toxic chemicals and their disposal in liquid waste, which negatively affects for the environment. Moreover, textile industries, especially wet processing, consume a large amount of energy, water, and chemical auxiliaries. Therefore, there is an urgent need to find a solution that takes the problem of environmental pollution into account. Considering ultrasound as an environmentally safe alternative for dyeing polyester fabrics with the disperse dyes that we have prepared before, the comparison between the ultrasonic dyeing method and conventional dyeing at low temperatures was investigated. Dye exhaustion on polyester fabrics and fastness properties such as the washing, rubbing, light, and perspiration of all of the dyed fabrics were performed by two dyeing methods. Additionally, the ultraviolet protection factors (UPF) for dyed polyester fabrics were evaluated.

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Zhang, Qingshuo, Liuming Wei, Yutong Yang, Chan Luo, Zhu Zhu, Zhigao Liu, Yunlin Fu, and Jing Sun. "Dyeing process and mechanism of eucalyptus veneer with Pterocarpus macrocarpus Kurz heartwood pigment as natural dye." BioResources 15, no. 4 (October 12, 2020): 8925–43. http://dx.doi.org/10.15376/biores.15.4.8925-8943.

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To make full use of the processing residues of Pterocarpus macrocarpus Kurz and reduce the environmental pollution caused by synthetic dyes, natural dye was extracted from Dalbergia bariensis Pierre heartwood. The purpose of the work was to prepare natural dyes of Pterocarpus macrocarpus and identify the key color-producing components to better explore the mechanisms of combination between dyes and eucalyptus veneers. The main components of Pterocarpus macrocarpus heartwood were analyzed by ultra-high performance liquid chromatography with quadrupole-electrostatic field Orbitrap high resolution-mass spectrometry (UPLC-Q-EXACTIVE Orbitrap-MS). The best dyeing process and color fastness were measured. Research technology combining Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) was used to explore the binding mechanism between eucalyptus veneers and dyestuffs. The UPLC-Q-EXACTIVE Orbitrap-MS results showed 16 flavonoids. The optimal dyeing process parameters of eucalyptus veneer were a 90 °C dyeing temperature, 12 h dyeing time, 4 wt% pigment, and 2 wt% NaCl. The FTIR and FESM results revealed that the dyeing was mainly achieved by physical adsorption and intermolecular hydrogen bonding.

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Howard, Ebenezer Kofi, Charles Frimpong, and Raphael Kanyire Seidu. "Risk assessment of attitudes and practices of students and practitioners toward studio dyeing in Ghana." Research Journal of Textile and Apparel 23, no. 3 (September 9, 2019): 189–200. http://dx.doi.org/10.1108/rjta-03-2019-0011.

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Purpose The purpose of this study is to assess the attitudes and practices of students and practitioners in the dyeing studio. Empirical evidence shows that synthetic dyes are the most commonly used dyestuff because of their colour fastness as compared with natural dyes. However, it is proven scientifically that synthetic dyes and their auxiliaries are carcinogenic and allergenic, which pose as health risks to users. Design/methodology/approach The study used analytical observational study design, where observation, questionnaire and interview were the instruments for data collection. Findings A survey conducted at selected dyeing studios in Ghana revealed the excessive use of vat dyes by students and practitioners because of its availability and accessibility on the local market. Adversely, the study found non-use of personal protective equipment by students and practitioners for protection against hazardous effects of dye chemicals. Again, poor studio set up with limited space and lack of proper waste drainage systems at the various dyeing studios results in inappropriate disposal of dyes, leading to environmental pollution. Originality/value Dyeing throughout history has been practiced to colour a fabric or yarn for specific use in the environment, which brings in some revenue. This practice however employs the use of dyes coupled with its auxiliaries, which poses some health problems in the short, medium and long term because of certain attitudes and practices exhibited by students and practitioners in the studio. It is therefore imperative for effective compliance to safety rules and practices by students and practitioners to ensure their safety. It is also critical that educational institutions and practitioners build modern dyeing studios which are spacious, well ventilated and efficient in limiting environmental pollution in compliance with eco-friendly practices. The study further recommends collaboration between Academia, local dyers’ association , Ghana Health Service and the Environmental Protection Agency to organize workshops to ensure best safety practices to save lives and the environment.

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Saxena, Ambika, and Sarika Gupta. "Bioefficacies of microbes for mitigation of Azo dyes in textile industry effluent: A review." BioResources 15, no. 4 (September 21, 2020): 9858–81. http://dx.doi.org/10.15376/biores.15.4.saxena.

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In recent years, India has emerged as a promising industrial hub. It has a cluster of textile, dyeing, and printing industries. The adjoining rivers/water bodies receive mostly untreated discharge from these industries. Textile industrial effluent contains various contaminants (dyes, heavy metals, toxicants, and other organic/inorganic dissolved solids) that alter the physico-chemical properties of adjoining land and waterbodies in which it is discharged, thereby degrading the water quality and subsequently affecting the landscapes in the vicinity. This ultimately affects the flora and fauna of the locale and has adverse effects on human health. Out of the total dyes (approximately 10,000 dyes) exploited in the textile dyeing and printing units, azo dyes possess a complex structure and are synthetic in origin. They contribute nearly 70% to the total effluent discharge. Biological processes are based on the ability of inhabiting indigenous microorganisms in these contaminated environments to tolerate, resist, decolorize/degrade, and mitigate the recalcitrant compounds. Exploring microbes with higher efficacy of azo dye degradation can reduce the amount of chemical discharged from the process. The present review explores the potential of microbial diversity for the development of an effective bioremediation approach. The review also includes the impact of azo dyes on the flora and fauna, as well as conventional and microbe-assisted nanoparticle technology for treatment of the textile wastewater targeting the degradation of dye contaminants.

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Hu, Yu'an, Sheng He, Mei He, Kate Semple, Meiling Chen, and Chunping Dai. "Weathering performance of dyed bamboo fiber composites." BioResources 15, no. 4 (October 28, 2020): 9523–38. http://dx.doi.org/10.15376/biores.15.4.9523-9538.

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Flattened and crushed fiber-bundles of moso bamboo (Phyllostachys pubescens) were dyed with a water or alcohol-based dye at 20 °C, 75 °C or 90 °C for 72 h, followed by drying and coating with PF resin. Hot-pressed bamboo fiber composites (BFC) were manufactured, and the weathering performance of the composites made from dyed and natural bamboo material were tested over 90 days of the Autumn/Winter season in Beijing. Dye was able to penetrate the bamboo tissue to create a rich red color that degraded in color faster than BFC made from un-dyed bamboo. BFC made from un-dyed tissue remained a lighter but more consistent color over the weathering period. Dying the bamboo in ethanol-based dye was effective at pigmenting the product, but made it more susceptible to color degradation as well as greater mass and thickness loss due to the chemical degradation of the lignin caused by ethanol. Higher temperature of water dying treatment (90 °C) gave the greatest resistance to mass and thickness loss during outdoor exposure, and the bamboo may have benefitted from the longer period of ‘heat treatment’ during dyeing. Further work is needed to quantify dye leaching from bamboo tissue and to develop more water-tight and color-fast, weather resistant dyes for bamboo products.

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CHATTOPADHYAY, S., N. PAN, and A. DAY. "Reuse of reactive dyes for dyeing of jute fabric." Bioresource Technology 97, no. 1 (January 2006): 77–83. http://dx.doi.org/10.1016/j.biortech.2005.02.033.

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Savarino, Piero, Guido Viscardi, Rosarina Carpignano, and Ermanno Barni. "Model dyes for optimizing the dyeing of polyamide." Journal of Chemical Technology & Biotechnology 51, no. 2 (April 24, 2007): 243–51. http://dx.doi.org/10.1002/jctb.280510210.

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Hakim, Luqman Nur, Syarifudin A., and Sulaiman Hamzani. "Efektifitas Abu Sekam Padi Dan Poly Aluminium Chloride Dalam Menurunkan Zat Warna Limbah Cair Industri Sasirangan." JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan 13, no. 2 (July 1, 2016): 346. http://dx.doi.org/10.31964/jkl.v13i2.32.

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Abstract: Effectiveness Of Rice Husk Ash And Poly Aluminum Chloride In Reducing Exposure Colour Liquid Waste Industry Sasirangan. Sasirangan fabric industry is the textile of industry in Kalimantan Selatan produce wastewater of dyeing cloth sasirangan process that uses water as a primary adjuvant in stage process.The study aims to determine the effectiveness of rice husk ash and Poly Aluminium Chloridereduce levels of dyes in wastewater sasirangan "Oriens Handycraft". This study tested a laboratory scale with dose variation of rice husk ash and Poly Aluminium Chloride for reduced levels of dyes in wastewater sasirangan. The study design is a randomized pretest - posttest control group design. The population of the waste liquid fabric manufacturesasirangan results and samples are the waste from the manufacture of cloth sasirangan which represents the population. This study conduct statistical tests usingKruskal Wallis and Mann-Whitney Test.Theresultsofthestudyof color levels priorto treatment equal to 2,712 PtCo and after treatment ranges from 676.3 to 978.7 PtCo at a dose of 58 grams of rice husk ash; 59 g; 60 g; 61 g; 62 gr and Poly Aluminium Chloride 0.5 gr. For a dose of 58 grams of rice husk ash; 59 g; 60 g; 61 g; 62 gr and Poly Aluminium Chloride 1 g of color levels before treatment and after PtCo 1775 amounted to 227.7 PtCo ranges up to 240 PtCo. Rice husk ash and Poly Aluminium Chloride effective at pH 6.5 - 7. Results of normality test showed abnormal data. Kruskal Wallis test probability value 0.002 <0.05, there is a difference between the average dosing in the control group and the treatment group and the Mann-Whitney Test probability value of 0.009 (0.018 <0.05), the rice husk ash dosing and Poly Aluminium Chloride 1 g more effective than rice husk ash dosing and Poly Aluminium Chloride 0.5 g.Efforts government can do is provide the appropriate policy on effluent quality standards and attention to industrial waste disposal sasirangan. For the industry can manage its waste before waste into the environment. Keywords: SasiranganWaste; Materials coagulant; pH; Dyes

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Shi, Yuan, Wenhua Lyu, Xueyu Wang, and Qiangqiang Liu. "Effect of various compounding methods on acid red 18050- melamine modified urea formaldehyde resin compound as wood modifier." BioResources 14, no. 4 (September 30, 2019): 9100–9109. http://dx.doi.org/10.15376/biores.14.4.9100-9109.

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In order to simultaneously improve the strength and decoration properties of plantation wood, a multi-effect modifier was prepared by compounding acid red 18050(G) with melamine-modified urea formaldehyde resin (MUF). Various compounding methods for MUF synthesis such as adding dye with the first part urea (U1G) or with the second part urea (U2G), or direct blending with MUF resin (BG) were tested. Chinese fir plantation wood was impregnated with these modifiers separately, and its color, color fastness, and dyeing mechanism were studied. The results showed that G had good compatibility with MUF and could prolong its storage time, and all compound modifiers exhibited permeability and coloring effect on Chinese fir wood. Compared with G-dyed wood under the same conditions, all the compound dyed wood had better color fastness to water, and the U2G-dyed was the best, the color fastness to xenon light of U2G dyed wood was greatly improved.. Fourier transform infra-red (FTIR) analysis showed that compared with MUF-modified wood, the dye affected MUF hydroxyl-methylation reaction in U1G, lowered the polycondensation degree, and extended its storage time. The dye might have promoted the ionic reaction between resin amino and dye sulfonic groups in U2G, thus displaying better color fastness.

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Mu, Bingnan, Linyun Liu, Wei Li, and Yiqi Yang. "High sorption of reactive dyes onto cotton controlled by chemical potential gradient for reduction of dyeing effluents." Journal of Environmental Management 239 (June 2019): 271–78. http://dx.doi.org/10.1016/j.jenvman.2019.03.062.

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Mishra, Saurabh, Liu Cheng, and Abhijit Maiti. "The utilization of agro-biomass/byproducts for effective bio-removal of dyes from dyeing wastewater: A comprehensive review." Journal of Environmental Chemical Engineering 9, no. 1 (February 2021): 104901. http://dx.doi.org/10.1016/j.jece.2020.104901.

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Granato, Miguel Angelo, Tales Meira Gaspar, Aline Flôres Alves, Antonio Augusto Ulson de Souza, and Selene Maria Arruda Guelli Ulson de Souza. "Reuse of wastewaters on dyeing of polyester fabric with encapsulated disperse dye." Environmental Technology 40, no. 4 (November 2, 2017): 408–17. http://dx.doi.org/10.1080/09593330.2017.1393017.

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Ali, Sameh Samir, Rania Al-Tohamy, Eleni Koutra, Amal H. El-Naggar, Michael Kornaros, and Jianzhong Sun. "Valorizing lignin-like dyes and textile dyeing wastewater by a newly constructed lipid-producing and lignin modifying oleaginous yeast consortium valued for biodiesel and bioremediation." Journal of Hazardous Materials 403 (February 2021): 123575. http://dx.doi.org/10.1016/j.jhazmat.2020.123575.

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Lin, Sheng H. "Concentration-dependent diffusion of dye in adsorptive dyeing systems." Journal of Chemical Technology & Biotechnology 54, no. 4 (April 24, 2007): 387–91. http://dx.doi.org/10.1002/jctb.280540413.

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Khan, Amjad Ali, and Qayyum Husain. "Decolorization and removal of textile and non-textile dyes from polluted wastewater and dyeing effluent by using potato (Solanum tuberosum) soluble and immobilized polyphenol oxidase." Bioresource Technology 98, no. 5 (March 2007): 1012–19. http://dx.doi.org/10.1016/j.biortech.2006.04.008.

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Nguyen, Thai Anh, Chun-Chieh Fu, and Ruey-Shin Juang. "Biosorption and biodegradation of a sulfur dye in high-strength dyeing wastewater by Acidithiobacillus thiooxidans." Journal of Environmental Management 182 (November 2016): 265–71. http://dx.doi.org/10.1016/j.jenvman.2016.07.083.

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Hanna, M. A. "Novel dyes and intermediates for synthetic-polymer fibres: Synthesis and dyeing performance of 1-aryl-5-hetarylphenylazo-4-hydroxypyrazole derivatives and their isomeric 1-hetarylphenyl-5-arylazo analogues as disperse dyes for polyester fibre." Journal of Chemical Technology & Biotechnology 58, no. 1 (April 24, 2007): 9–17. http://dx.doi.org/10.1002/jctb.280580103.

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Hauser, Peter J. "Sustainable Cotton Dyeing." Advanced Materials Research 441 (January 2012): 1–4. http://dx.doi.org/10.4028/www.scientific.net/amr.441.1.

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Conventional methods of dyeing cotton with direct and fiber reactive dyes involve large amounts of water and salt and generate significant amounts of highly colored effluent that is difficult to treat in waste water treatment facilities. Cationization of cotton with 3-chloro-2-hydroxypropyltrimethylammonium chloride allows dyeing with direct and fiber reactive dyes with less water and energy usage as well as the eliminating the need for salt. This paper summarizes work to date on the benefits of using cationized cotton.

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Pawar, Ashitosh B., Kaustubh C. Patankar, Pallavi Madiwale, and Ravindra Adivarekar. "Application of chemically modified waste Allium cepa skin for one bath dyeing of polyester/wool blend fabric." Pigment & Resin Technology 48, no. 6 (November 4, 2019): 493–501. http://dx.doi.org/10.1108/prt-11-2018-0118.

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Purpose The purpose of this paper is to highlight the one bath dyeing method for polyester/wool (PES/Wo) blend fabric with two different semi-synthetic azo dyes developed by chemically modifying the outer skin of Allium cepa. Design/Methodology/Approach Chemical modification is the most heartening way to impart improved properties to natural sources. Two different primary amines were coupled with the Allium cepa skin extract by a diazo coupling reaction. Synthesised dyes were characterized for their percentage yield, solubility tests, melting point, particle size analysis as well as FTIR spectroscopy and UV-Visible analysis. One bath dyeing methodology was used for application of synthesized dyes on PES/Wo blend fabric. Dyeing was performed at boil without any additional auxiliary and further percentage dye exhaustion was evaluated. Findings Dyeing yielded solid shade on PES/Wo blend fabric with satisfactory levelness in dyeing. The efficacy of synthesized dyes for dyeing of PES/Wo fabric was studied by wash, rub, light and sublimation fastness properties, which are in good agreement with commercial requirements. The antimicrobial activity of the synthesized dyes shows excellent activity in dye powder form (AATCC 147 test method) as well as on dyed fabrics (AATCC 100 test method). Originality/Value Present research work is a first successful attempt to dye PES/Wo blend fabric with semi-synthetic azo dyes in single bath at boil. Such approach facilitates minimum consumption of energy, cost and time.

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Huong, Bui Mai. "APPLYING BI–FUNCTIONAL DYEING AND UV PROTECTION ON PROTEIN TEXTILE MATERIALS WITH WASTE FROM USED TEABAGS AND MANGOSTEEN HULLS." Vietnam Journal of Science and Technology 55, no. 1B (March 23, 2018): 91. http://dx.doi.org/10.15625/2525-2518/55/1b/12096.

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This paper presents the connection among three factors of the eco–friendly approach and products: natural textile materials, natural dyes and utilization of waste. The silk and wool materials were chosen as they are both protein fibers that have natural dyes affinity. The dyes were extracted from wastes (mangosteen hulls and used tea–bags) with optimal conditions found during our experiments: 80 °C for 120 min with a 15 % w/v citric acid solution in a 1:10 ratio of mangosteen flakes to solvent and 100 °C for 60 min in a 1:20 ratio of spent tea powder to solvent. The silk dyeing and wool dyeing were carried out at separately proper temperature, time and concentrations. The effect on dyeing of mordant types with different salt–metals mordanting methods and mordant techniques – pre–mordanting, simultaneous mordanting and post–mordanting were undertaken. The K/S values were used for determining the fixation of dyes on textile materials as it reflects the surface luster shade of the dyeing products. The results helped to estimate the influence of dyeing processes on protein materials where low temperature (< 90 °C) and post–mordanting methods exhibited good effects. The UPF values above 29 measured on dye fabric proved the excellent UV protection, even with non–mordant dyeing.

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Hansa, A., V. L. Pillay, and C. A. Buckley. "Analysis of reactive dyes using high performance capillary electrophoresis." Water Science and Technology 39, no. 10-11 (May 1, 1999): 169–72. http://dx.doi.org/10.2166/wst.1999.0649.

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Increasing reports of coloured effluent from waste water treatment plants receiving reactive dye waste from textile mills indicate the need to learn more about the fate of these dyes. The project concerns the development of analytical techniques for the analysis of reactive dyes in textile waste. An analytical procedure using High Performance Capillary Electrophoresis (HPCE) and High Performance Liquid Chromatography (HPLC) for the separation of a range of reactive dyes in textile waste water is described. The dyes belong to a range of bis-monochlorotriazinyl dyes used widely in the dyeing of cotton textiles.

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Miyata, Kiyomi, Chunhua Jin, and Masako Maekawa. "Adsorption Removal of Anionic Dyes in Waste Water from Dyeing by Chitosan." FIBER 58, no. 12 (2002): 462–65. http://dx.doi.org/10.2115/fiber.58.462.

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Hao, Xu. "Study on Cycle Dyeing Technology of Cotton Fabric with X-Reactive Dye." Advanced Materials Research 821-822 (September 2013): 655–60. http://dx.doi.org/10.4028/www.scientific.net/amr.821-822.655.

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To increase the utilization of X-reactive dyes, reduce dyeing waste water, protect the environment and promote wider use of eco-dyeing technique, cycle technique was used to improve the reactive dyeing on cotton fabric. The results of experiment showed that hydrolysis X-reactive dye for one-bath-two-step dyeing can be effectively activated by activator in the residue and remains the original dye activity. The obtained results also indicated the cycle dyeing can be implemented 6 times by adding quantitative X-reactive dye, and dye used in cycle dyeing was less than that of the normal dyeing process. The K/S values, washing color fastness, rubbing fastness and breaking strength of the cycle dyeing sample changed a little in comparison with those of the conventional dyeing technology.

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Bisschops, I., A. B. dos Santos, and H. Spanjers. "Waste sizing solution as co-substrate for anaerobic decolourisation of textile dyeing wastewaters." Water Science and Technology 52, no. 1-2 (July 1, 2005): 397–403. http://dx.doi.org/10.2166/wst.2005.0545.

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Dyeing wastewaters and residual size are textile factory waste streams that can be treated anaerobically. For successful anaerobic treatment of dyeing effluents, a co-substrate has to be added because of their low concentration of easily biodegradable compounds. Starch-based size contains easily biodegradable material, but is too concentrated to be treated without difficulties. Although residual size makes up only a small volume, when mixed with the other textile wastewater streams it has a considerable impact on the overall organic load. Many textile dyes can pass through a conventional aerobic treatment plant without being degraded. Anaerobic pre-treatment of the dyeing wastewaters before discharge to the aerobic plant can solve this problem, as many dyestuffs are partly degradable under anaerobic conditions, rendering aerobically degradable products. In this study, the possibility of using waste size as a co-substrate for the anaerobic pre-treatment of dyeing wastewaters was investigated. It was found that waste size was applicable as co-substrate for the decolourisation of the two textile dyeing wastewaters studied. Adding a redox mediator could enhance decolourisation rates for both wastewaters.

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Riddhi Bhanushali Vallabhji and Vishaka Karnad AshishT. "Dyeing of cotton and silk using vegetable kitchen waste: A step towards sustainability." International Journal for Modern Trends in Science and Technology 06, no. 9S (October 16, 2020): 214–33. http://dx.doi.org/10.46501/ijmtst0609s33.

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Vegetable wastes occur throughout the supply chain. Globally, around 20% loss occurs at consumer levels, of which post-harvest and food processing level wastages account for 80% share. Wastes pose environmental threats and call for the development of a model to recycle this unutilized waste in potential avenues. The study focuses on sourcing of vegetable & fruit kitchen waste and extracts the dyes from waste to create a concrete framework in managing the kitchen waste towards using it for textile dyeing. The study will compare microwave extraction and conventional extraction method (exhaustion) and dyeing processes in terms of depth of shade and hue. The present results have demonstrated that the affinity of vegetable kitchen waste material as a source of natural coloring agents for dyeing proteinic silk fabric is higher than cellulosic cotton fabric by using both conventional and microwave assisted dyeing. Compared to conventional the microwave-assisted extraction and dyeing technique is highly effective in terms of saving the processing time, energy, and resources. Other additional features about microwave is that it is cheaper, more economical, energy saving and thereby eco-friendly. Consumers believed as expressed in the opinion survey that this research idea is excellent and will help in reducing waste.

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Määttänen, Marjo, Sari Asikainen, Taina Kamppuri, Elina Ilen, Kirsi Niinimäki, Marjaana Tanttu, and Ali Harlin. "Colour management in circular economy: decolourization of cotton waste." Research Journal of Textile and Apparel 23, no. 2 (June 3, 2019): 134–52. http://dx.doi.org/10.1108/rjta-10-2018-0058.

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Purpose While aiming to create methods for fibre recycling, the question of colours in waste textiles is also in focus; whether the colour should be kept or should be removed while recycling textile fibre. More knowledge is needed for colour management in a circular economy approach. Design/methodology/approach The research included the use of different dye types in a cotton dyeing process, the process for decolourizing and the results. Two reactive dyes, two direct dyes and one vat dye were used in the study. Four chemical treatment sequences were used to evaluate colour removal from the dyed cotton fabrics, namely, HCE-A, HCE-P-A, HCE-Z-P-A and HCE-Y-A. Findings The objective was to evaluate how different chemical refining sequences remove colour from direct, reactive and vat dyed cotton fabrics, and how they influence the specific cellulose properties. Dyeing methods and the used refining sequences influence the degree of colour removal. The highest achieved final brightness of refined cotton materials were between 71 and 91 per cent ISO brightness, depending on the dyeing method used. Research limitations/implications Only cotton fibre and three different colour types were tested. Practical implications With cotton waste, it appears to be easier to remove the colour than to retain it, especially if the textile contains polyester residues, which are desired to be removed in the textile refining stage. Originality/value Colour management in the CE context is an important new track to study in the context of the increasing amount of textile waste used as a raw material.

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Verma, Himani, Anita Rani, Manisha Gahlot, Alka Goel, and Anil Kumar Sharma. "Sustainable dyeing of wool fabric with Talaromyces purpurogenus." Journal of Applied and Natural Science 11, no. 4 (December 10, 2019): 796–801. http://dx.doi.org/10.31018/jans.v11i4.2179.

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Natural dyes had been used by human being since ancient times for colouring of various materials including textiles. These were replaced completely by synthetic dyes, continuous use of which created the problem of pollution and environmental degradation. With the development of green technology and increased awareness of sustainability, the use of non-allergic, non-toxic and eco-friendly natural dyes on textiles has become a matter of significant importance. Among the natural sources of colourants, microorganisms such as bacteria and fungi have gained interest in the field of textile coloration. In the present study, the pigment solution yielded from growth of Talaromyces purpurogenus sp. on organic waste was used for dyeing of wool fabric. Under the dyeing conditions i.e. 1:30 M:L ratio, pH 5, 80º C temperature and 45 minutes dyeing time, the percent absorption could reach 57 %, 32%, 36% and 49% respectively. The wool fabric samples dyed with the fungal dye exhibited very good to excellent washing and rubbing fastness properties. The colour pigment obtained from fungal thus offered an opportunity to reduce impact on plant resources for dye source exploration. So it can be concluded from the study that a natural fungal dye could help to sustain the environment and to minimize the over exploitation of natural resources.

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Wijayapala, Samudrika. "Investigation of Floral Dye Extracts as Dyeing Material for Textile Fabrics with Bio Mordant for Sri Lankan Textile Industry [Investigación de extractos de tintes florales como material de teñido para telas textiles con biomordiente para la industria textil de Sri Lanka]." Journal of Sciences and Engineering 4, no. 2 (October 22, 2020): 10. http://dx.doi.org/10.32829/sej.v4i2.183.

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In Sri Lanka a huge amount of flowers are cultivated. These flowers are used as decoration purposes or for offering to Buddha and God. A survey report reveals that 40% of the total productions of flowers are unsold and wasted everyday which are thrown in water or dumped which also creates water pollution as well as environmental pollution. These wasted flowers can be used in various ways & we can get wealth from waste materials. These wasted flowers are used in extraction of colourful dyes from these flowers and use it in textile industry for dyeing purposes and the residual water portion can be used as bio-fertilizers.Colourful dye can be extracted from flowers for dyeing textile fibre. These floral dyes are eco-friendly & it has no allergic action on skin like synthetic dye. Moreover the procedure is very cost-effective and depending on it small scale Industry as well as Large scale Industry can be set up. Keeping in view the importance of eco textiles and their demand in the national and international market and to overcome the problem of environmental pollution, allergic reactions to man- kind, and the present investigation was carried out to introduce to use floral dyes for dyeing of bleached cotton fabric and tested its colour fastness properties.

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Vadwala, Yogesh, and Namrita Kola. "NATURAL DYES EXTRACTED FROM WASTE LEAVES OF TERMINALIA CATAPPA LOCALLY KNOWN AS TROPICAL ALMOND AND ITS APPLICATION ON SILK FABRICS PRETREATED WITH ECO FRIENDLY AND NONECO-FRIENDLY MORDANTS." International Journal of Research -GRANTHAALAYAH 5, no. 5 (May 31, 2017): 125–37. http://dx.doi.org/10.29121/granthaalayah.v5.i5.2017.1845.

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The use of non-toxic and eco-friendly natural dyes on textiles has become a matter of significant importance because of the increased environmental awareness in order to avoid some synthetic dyes. Synthetic dyes are hazardous and carcinogenic and also release vast amount of pollutant in the environment during their manufacture and application, thus revival of natural dyeing techniques as one of the alternative is being emphasized for this purpose. Most effective ways for reducing environmental pollution is the replacement of polluting materials and chemicals by eco-friendly natural materials. Many natural resources which are being wasted indiscriminately or thrown away as a waste product contain useful dyes and pigments. In the present study, natural dye extracted from the waste leaves of Terminalia Catappa (tropical almond) and its application on silk fabrics pretreated with eco-friendly and non-eco-friendly mordants have been carried out successfully. Different shades with excellent to good fastness properties have been obtained.

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Shang, Songmin. "Carbon Aerogel Materials Promoted Catalytic Ozonation Of Residual Dyes In Waste Effluents From Cotton Dyeing." Advanced Materials Letters 8, no. 8 (August 1, 2017): 841–46. http://dx.doi.org/10.5185/amlett.2017.1515.

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Niero, Guilherme, Albertina X. R. Corrêa, Theodoro M. Wagner, Rogério Corrêa, Gizelle I. Almerindo, Clóvis A. Rodrigues, and Claudemir M. Radetski. "Shrimp Exoskeleton and Mussel Shell Wastes As Adsorbent Material to Remove Reactive Turquoise Blue 15 (RTB15) and Reactive Red 120 (RR120) Dyes from Textile Wastewaters." Journal of Solid Waste Technology and Management 46, no. 3 (August 1, 2020): 213–22. http://dx.doi.org/10.5276/jswtm/2020.213.

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Industrial environmental management includes reutilizing waste by transforming solid bio-waste into a valuable resource, e.g. a bioadsorbent. This study aimed to mitigate two environmental local problems: the disposal of fishing biowaste and the removal of dyes from textile wastewater. For this purpose, fishing industry waste (shrimp exoskeleton – SE and mussel shell-MS) was used as adsorbent material to remove dye from textile wastewaters. Adsorption efficiency was evaluated by general, kinetic and thermodynamic physico-chemical parameters in adsorption isotherms, using Reactive Turquoise Blue 15 (RTB15) and Reactive Red 120 (RR120) dyes as adsorbate models, as these dyes are commonly used in the local textile industry. The isothermal data from the batch experiments were fitted to Langmuir, Freundlich and Langmuir-Freundlich (SIPS) equations, with the best fit shown by the Freundlich isotherm equation. The thermodynamic parameters showed that adsorption of the dyes on the bioadsorbents was an endothermic yet spontaneous processes in the case of SE waste. Both bioadsorbents adsorbed both tested dyes, but the SE showed better results. Due to its abundant availability SE and MS biowaste can be employed as a low-cost alternative adsorbent for dye removal.

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Leung, S. Y., W. H. Cheung, and G. McKay. "Acid dyes adsorption onto activated carbon from waste tyres." International Journal of Environment and Waste Management 3, no. 3/4 (2009): 286. http://dx.doi.org/10.1504/ijewm.2009.026345.

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Peláez Cid, Alejandra Alicia, Araceli Vázquez Barranco, and Ana María Herrera González. "Elimination of Dyes Present in Textile Industry Wastewater Using Adsorbent Materials Prepared from Broccoli Stem." Advanced Materials Research 976 (June 2014): 207–11. http://dx.doi.org/10.4028/www.scientific.net/amr.976.207.

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This paper presents the results of the adsorption of textile dyes in static systems, using adsorbent materials prepared from broccoli waste collected after harvest. The adsorption capacities of the non-activated lignocellulosic residue (BrocNat), the chemically activated waste using sodium hydroxide (BrocNaOH), the thermally activated at 823 K ash (AshBroc), and the chemically activated carbon using phosphoric acid at 673 K (CarBrocQ) were tested. Aqueous solutions containing cationic and anionic dyes as well as textile effluents generated after the dyeing process of a cotton-processing factory containing vat and reactive dyes were treated. Lignocellulosic materials were only effective in removing dyes when they were found in aqueous solution. The carbonaceous adsorbent CarBrocQ presented removal percentages close to 100% and between 13 and 75% for reactive and vat dyes contained in the effluents respectively. To accomplish the complete elimination of color from effluents containing vat dyes, these were treated before adsorption, using aluminum chlorohydrate and poly(acrylamide-co-sodium acrylate) as coagulant and flocculant agents, respectively. The COD of the effluent containing vat dyes was reduced up to 93% after both treatments were combined, and the removal of color was absolute. The high adsorption capacity of CarBrocQ occurs because of its high specific surface area, which was determined by N2 adsorption to be 1177 m2g-1. In the case of the lignocellulosic material, the specific surface area was determined by means of adsorption of methylene blue, and it was 485 m2g-1 for both. The adsorption capacity of CarBrocQ was compared with that of commercial carbons, and proved to be similar. The adsorption results obtained indicate that broccoli waste can be used to prepare activated carbon with applications in the removal of dyes present in textile effluents.

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Wang, Menglong, Mengmei Mao, Ming Zhang, Guangdong Wen, Qiwei Yang, Baogen Su, and Qilong Ren. "Highly efficient treatment of textile dyeing sludge by CO2 thermal plasma gasification." Waste Management 90 (May 2019): 29–36. http://dx.doi.org/10.1016/j.wasman.2019.04.025.

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Kholil, Aris Sugih Arto, Husniyyah Ulfah Adani, Annisa’ Mufsihah, and Achmad Chafidz. "Utilization of Old Coconut (Cocos nucifera) Husk Waste as Potential Source of Natural Dye and its Dyeing Properties on Cotton Cloth." Key Engineering Materials 882 (April 2021): 280–86. http://dx.doi.org/10.4028/www.scientific.net/kem.882.280.

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Coconut husk is considered waste and its fibers can be used as a source of natural dyes for textiles. The objective of this research is to obtain natural dyes from old coconut (Cocos nucifera) husk waste fibers through the extraction process. Brown color was produced in the liquid-liquid extraction method. The brown color natural dyes were then used to dye cotton cloth. Three different binding agents were used during the fixation process, i.e. tunjung, naphtol salt, and alum. The coloring results of the natural dye on the cotton cloth were as follow: with alum binding agent the resulting color was light brown (cream), whereas tunjung binding agent produced a greenish brown color, and using napthol salt binding agent produced yellow color. The colored cotton cloths were tested for their color fastness properties against rubbing, soap washing, and sunlight exposure. The measurement scale used was grey scales, which was used to evaluate the color change (color fading) and color staining (color transfer) during color fastness testing. In general, based on the results, the colored cotton cloth using alum as binding agent showed better color fastness properties against rubbing, soap washing, and sunlight exposure compared to the ones using tunjung and naphtol salt binding agents.

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Gusti, Ilfira, and Sri Zulfia Novrita. "Perbedaan Hasil Pencelupan Bahan Sutera Menggunakan Ekstrak Kulit Pisang Kepok dengan Mordan Tawas dan Kapur Sirih." JURNAL PENDIDIKAN DAN KELUARGA 11, no. 02 (May 1, 2020): 161. http://dx.doi.org/10.24036/jpk/vol11-iss02/659.

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Abstract This research is motivated as an effort to reduce the problem of environmental pollution by re-using natural dyes. The natural dyes used are the utilization of waste which is kepok banana peel. The purpose of this study is to describe the name of the color (hue), dark light (value), and evenness of color as well as differences in mordan alum and whiting to the results of dyeing silk material using kapok banana peel extract (MusaParadisiaca L). This type of research is experimental research. Data collection techniques using a questionnaire (questionnaire) from 18 panelists. The data analysis technique was carried out using the Friedman K-related sample test technique and using the SPSS (Statistical Product and Service Solution) version 16.0 application. Dipping silk material with Kepok Banana peel extract (MusaParadisiaca L) without mordan yielding a Wheat Light Brown color with Code # F6E7B0 and value category very bright and evenness of color in the very flat category. In dyeing with mordan alum produces Light Brown color with code # E7BE75 with light category and flatness value in the flat category, while in dyeing with mordan whiting the color name is Golden Sundanese with code # D7A04F with the value of the category light enough and flat for the category flatness. Friedman K-related sample test results obtained for light dark color (value) is 0.001 <0.05, then H0 is rejected, meaning that there are significant color differences. Whereas the color density of the data obtained was 0.154> 0.05, H0 was accepted, meaning that there was no significant difference in color evenness in the dyeing of silk material using Kepok banana peel extract (MusaParadisiaca L) with mordan alum and whiting. Keywords: mordan alum and betel lime, kepok banana peel (Musa Paradisiaca L), silk material

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Montoneri, Enzo, Vittorio Boffa, Piero Savarino, Fulvia Tambone, Fabrizio Adani, Luca Micheletti, Carlo Gianotti, and Roberto Chiono. "Use of biosurfactants from urban wastes compost in textile dyeing and soil remediation." Waste Management 29, no. 1 (January 2009): 383–89. http://dx.doi.org/10.1016/j.wasman.2008.01.011.

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Rahman, Shafkat Shamim, Fahim Ahmed Alif, and M. Mahboob Hossain. "Optimization of conditions for the biological treatment of textile dyes using isolated soil bacteria." F1000Research 7 (March 21, 2018): 351. http://dx.doi.org/10.12688/f1000research.13757.1.

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Background: In the 21st century, environmental pollution has been acknowledged as one of the major problems. The textile and dyeing industries contribute a major portion by discharging intensely complex effluent consisting of highly noxious azoic dyes. Methods: In this study, biological treatment using acclimatized microorganisms were employed in search of a cheap and eco-friendly substitute for color removal from textile waste. The microbial inocula were isolated from effluent soil samples and then applied to flasks containing azo dyes as the only source of carbon for decolorization. Results: Biochemical tests postulated predominance of Enterococcus and Bacillus bacterial strains. CO isolate or Bacillus farraginis emerged as the best decolorizer of Orange M2R dye, decolorizing 98% of the dye. BG isolate or Paenibacillus macerans showed maximum decolorization on Green GS dye that decolorized 97% of the dye. The optimum physiochemical condition for decolorization of OM2R and GGS dye was pH 7.0, 2% NaCl conc., 1% initial dye conc. and 37°C temperature by the selected isolates. Conclusions: The findings were validated and have the potential for bioremediation in textile waste effluent treatment plants.

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Saha, Pradip, MR Khan, TK Deb, SY Sony, and AC Baishnab. "Treatment of Textile Dyes by Bio-chemical Process in Stirred Tank Sequencing Batch Bioreactor (STSBBR)." Journal of Chemical Engineering 27, no. 2 (January 29, 2014): 83–87. http://dx.doi.org/10.3329/jce.v27i2.17808.

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A bacterial isolate Pseudomonas sp. was isolated from the solid waste slump collected from a local duping site of Sylhet district and was efficiently utilized for the removal of dye (Orange 3R) from simulated synthetic waste water in a lab scale Stirred Tank Sequencing Batch Bioreactor (STSBBR) in batch mode. A reactor with 2 L capacity (working volume 0.5 L) equipped with suitable control means and stirring mechanism was operated at room temperature and pH 6.6 ± 1 in fill-react-settling-draw mode with different initial dye concentrations (50, 100, 150, 200 & 300 ppm) where the hydraulic retention time was maintained for 12-72 hours depending on the adaptation of waste water by the bacterial strain. The efficiency of the reactor was analyzed with respect to three strands and found to be negative correlation with the concentration of the dye. Overall color, COD, and BOD in the Stirred tank bioreactor system (STSBBR) were removed by 49.67, 37.45 and 33.89%, respectively with 50 ppm dye concentration and HRT of 24 h. The efficiency of the reactor was found to be in negative correlation with the concentration of the dye. This STSBBR system was found very effective for efficient biological treatment of such dyeing industry waste water by the bacterial strain Pseudomonas sp. DOI: http://dx.doi.org/10.3329/jce.v27i2.17808 Journal of Chemical Engineering, IEB Vol. ChE. 27, No. 2, December 2012: 77-82

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Villanueva, A., H. Wenzel, and H. H. Knudsen. "Handling of membrane concentrate from reclamation of water in polyester dyeing." Water Supply 3, no. 5-6 (December 1, 2003): 295–302. http://dx.doi.org/10.2166/ws.2003.0181.

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This analysis presents the results of a study carried out on 6 alternative options for the disposal of membrane reject (concentrate) from a Danish polyester dyehouse. The options analysed comprise: discharge to sewer (reference option and current practice), transport to biogas followed by sludge incineration, wet air oxidation, activated carbon, transport to hazardous waste treatment facility, and drying for zero-discharge. In most disposal scenarios considered it is advantageous to dewater the concentrate further from 2.5%DS (dry solids) to 20%DS in order to reduce its volume and thereby diminish the transport costs. Membrane filtration is a technology competitive to evaporation for dewatering at moderate DS contents that avoid the effects of fouling. The results obtained help concluding that discharge to sewer and biogas treatment are the less expensive options, as long as the concentrate is free of pollutants that may disturb the treatment process or jeopardize further applications of the biodegraded residue. Total dewatering of the concentrate for zero liquid discharge is still the most expensive solution. The results obtained confirm that concentrate disposal is a major cost of industrial water recycling projects where the concentrate has low or no commercial value. In the scenarios analyzed, concentrate disposal costs represent between 10% and 70% of the total treatment costs per m3 of water recycled. It is therefore recommended to analyze in detail the available alternatives for concentrate disposal in order to identify these costs at an early stage of the projects.

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Seshadri, Sanjay, Paul L. Bishop, and Amjad Mourad Agha. "Anaerobic/aerobic treatment of selected azo dyes in wastewater." Waste Management 14, no. 2 (January 1994): 127–37. http://dx.doi.org/10.1016/0956-053x(94)90005-1.

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Pei, Liujun, Juanjuan Liu, Guoqiang Cai, and Jiping Wang. "Study of hydrolytic kinetics of vinyl sulfone reactive dye in siloxane reverse micro-emulsion." Textile Research Journal 87, no. 19 (September 30, 2016): 2368–78. http://dx.doi.org/10.1177/0040517516671123.

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Reactive dyes maintain a long reaction with fiber and show a high dye uptake and fixation rate, and effectively decrease the dyeing waste water in siloxane reverse micro-emulsion. However, little research has been carried out into the hydrolysis reaction of reactive dyes in reverse micro-emulsion. In this study, Reactive Blue 19 was selected as a model vinyl sulfone reactive dye to study its hydrolysis in siloxane reverse micro-emulsion. The hydrolysis reaction was analyzed using high performance liquid chromatography. The results show that the hydrolysis rate of vinyl sulfone dyes in siloxane reverse micro-emulsion was slower than that in a traditional bath. Influences due to the ratio of aqueous dye solution to siloxane, non-ionic surfactant, cellulose fiber, and temperature on the hydrolysis reaction of vinyl sulfone reactive dye were also researched. The results show that with more aqueous solution emulsified in the siloxane media, the hydrolysis reaction of vinyl sulfone dye is faster. Reactive dyes were emulsified into a water micro-environment with non-ionic surfactant, which formed reverse micro-emulsion, and decreased the content of free water; this further influenced the hydrolysis of reactive dye.

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Das, Chandan, Sunando DasGupta, and Sirshendu De. "Treatment of dyeing effluent from tannery using membrane separation processes." International Journal of Environment and Waste Management 5, no. 3/4 (2010): 354. http://dx.doi.org/10.1504/ijewm.2010.032013.

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Xie, Candie, Jingyong Liu, Musa Buyukada, Fatih Evrendilek, Ukrit Samaksaman, Jiahong Kuo, and Omer Ozyurt. "Parametric assessment of stochastic variability in co-combustion of textile dyeing sludge and shaddock peel." Waste Management 96 (August 2019): 128–35. http://dx.doi.org/10.1016/j.wasman.2019.07.010.

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Puccini, Monica, and Domenico Castiello. "Study on the Use of Fleshings-Derived Collagen in Post Tanning Operations." Applied Mechanics and Materials 597 (July 2014): 144–50. http://dx.doi.org/10.4028/www.scientific.net/amm.597.144.

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The leather industry generates waste either in solid or liquid form. Fleshing, which is integral part of a hide, is removed during leather processing as it is an unwanted material in the final product. For every ton of leather processed, about 100–150 kg of fleshing is generated. An alternative to disposal of these wastes is to reuse them. In this study, an experimental activity research for assessing the feasibility of the reuse of the collagen hydrolizate in the retanning/dyeing/fatliquoring phase was performed. The hydrolyzed collagen, in liquid form, is obtained by alkaline hydrolysis of fleshings. The hydrolizate has been used both in a vegetable-chrome retannage/dyeing/fatliquoring and in a vegetable retannage/dyeing/fatliquoring to obtain bovine upper leather. Both in a vegetable-chrome retannage and in a vegetable retannage, the final leathers showed similar properties in terms of physical and technical properties to conventionally processed hides. The results obtained indicate that the use of the collagen hydrolizate in the retanning/dyeing/fatliquoring phase as an interesting route for recovering the fleshings.

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Samin, Mohd Azhar, Nor Azrin Ramli, and Rafeah Legino. "Block Batik from Natural Material of Soil on Fabric Dyes." Environment-Behaviour Proceedings Journal 6, SI5 (August 30, 2021): 107–10. http://dx.doi.org/10.21834/ebpj.v6isi5.2934.

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Natural elements of soil are a potential medium for block batik. The local batik producers usually use synthetic dyes, which contributed pollute the environment. There is a need for more natural dye options in block batik fabric dyeing. The practices effectively reduce waste emissions. This option will support an alternative to the batik industries, which is the current issues dealing with environmental challenges that sparked this project. This study employs an experimental textile approach. This study aims to identify soil types that can be used as colourants on fabrics suitable for batik block printing. This study will introduce eco-friendly dyes to the local batik industry. Keywords: Batik; Block; Dyes; Fabric; Natural material; Soil eISSN: 2398-4287© 2021. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v6iSI5.2934

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Cibulic, Violeta, Lidija Stamenkovic, Nebojsa Veljkovic, and Novica Staletovic. "Dynamics of the process of colour adsorption from waste waters after dyeing textile fibres on natural zeolites." Chemical Industry 67, no. 1 (2013): 41–49. http://dx.doi.org/10.2298/hemind120209049c.

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This study analyses the process of purifying waste waters from textile fibre dyeing by adsorption of colour on natural zeolites from ?Nemetali? mine, Vranjska Banja, Serbia. The process has been analyzed in an adsorption column filled with natural zeolite as the adsorbent. Adsorbents are organic substances, i.e. colour residues from waste waters, left after textile fibres dyeing. The concentration change in waste waters is represented with the parameter of chemical oxygen demand (COD). Two models of diffusion have been considered: diffusion in pores and diffusion in adsorbent phase on solid adsorbent, for different input loads and two zeolite granulations (13 and 35 mm). It was found that the diffusion in zeolite pores that were in adsorbed phase is dominant in this case, which can be explained by large dimensions of used colours? molecules. This is the reason why its adsorption in zeolite micro pores is minimal, and yet it diffuse well in already adsorbed phase on solid adsorbents. Since this process is slower, it will determine the overall rate of colour adsorption from waste waters. Specific equilibrium capacity, specific dynamic capacity, as well as the level of adsorbent utilization were determined by the use of mass transfer zone concept. It has been shown that the adsorption of organic substances from waste waters is satisfactory, and is around 80%. The highest degree of adsorbent utilization is obtained at the lowest flow of 0.167 cm3 s-1, while the lowest degree of utilization of 30%, is obtained at the highest flow of 3.27 cm3 s-1. Input load has significant influence on the degree of column utilization, while higher values of COD0 result in lower degrees of column utilization. Key words: waste waters, natural zeolite, adsorption, colour adsorption, textile dyes

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Shi, Sheng, Xiangwei Feng, Lixia Gao, Jiandong Tang, Hong Guo, and Shuhua Wang. "Hydrolysis and carbonization of reactive dyes/cotton fiber in hydrothermal environment." Waste Management 103 (February 2020): 370–77. http://dx.doi.org/10.1016/j.wasman.2019.12.052.

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Pandey, Anjali, Poonam Singh, and Leela Iyengar. "Bacterial decolorization and degradation of azo dyes." International Biodeterioration & Biodegradation 59, no. 2 (March 2007): 73–84. http://dx.doi.org/10.1016/j.ibiod.2006.08.006.

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Namasivayam, C., and K. Kadirvelu. "Coirpith, an agricultural waste by-product, for the treatment of dyeing wastewater." Bioresource Technology 48, no. 1 (January 1994): 79–81. http://dx.doi.org/10.1016/0960-8524(94)90141-4.

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Journal articles on the topic 'Dyes and dyeing Waste disposal'

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