Supercritical fluid technology as a sustainable alternative method for textile dyeing: An approach on waste, energy, and CO2 emission reduction

The Role of Surface Modification Methods for Sustainable Textiles

“…After the three components take their place in the boiler, the temperature is increased to the dyeing temperature by exceeding the critical temperature. In the third step, the critical temperature is exceeded, the dye begins to dissolve, and the fibers swell [148]. Ending the dyeing period, the gas is discharged by reducing the pressure below the critical temperature, and the fabric is taken as dry (Figure 6).…”

“…Its usage areas are pharmacy, food industry, polymer science, materials science, environment, chemical processes, hydrocarbon processes, and textile. These methods have some advantages on sustainability such as zero water, zero auxiliary chemicals, low energy, low dyeing time, reuse of carbon dioxide, nontoxic, not harmful to the environment, no need for postwashing, reduced use of dyestuffs due to its high dyeing efficiency [148]. In addition, the advantages encountered in the production process are as follows [2,[146][147][148].…”

Photocatalytic Degradation Using TiO2 P25: A Comparative Study for Different Textile Dyes

“…According to the World Health Organization, the textile industry is responsible for approximately 20% of global water pollution (DE OLIVEIRA et al, 2020, 2021c, 2023c. This pollution results from releasing effluents containing microplastics, dyes, and other chemicals into the environment (DE OLIVEIRA et al, 2021c, 2023b.…”

“…Annually, it is predicted that dye production will be around 700,000 tons (VINAYAGAM et al, 2024), of which around 300,000 tons of synthetic dyes will be discarded in treatment facilities worldwide (AMALINA et al, 2022;DE OLIVEIRA et al, 2023c). These pollutants affect water quality in water bodies, contaminate animals, and harm the photosynthesis processes of aquatic plants in these biomes.…”

Improving and measuring the solubility of favipiravir and montelukast in SC-CO2 with ethanol projecting their nanonization

“…8,9 Comparing to conventional processes, the use of SC-CO 2 can entail da positive impact on environmental preservation, but also on economic gains, thanks to the reduction of processes time and energy expenditure, the water-free and effluent-free processes and the reduction of CO 2 emission and auxiliary chemicals. 10 Specically in the use of this technology in the development of drug delivery systems, a crucial factor in the creation of micro/nano-sized drug particles in the pharmaceutical sector is the solubility of medicinal compounds in SC-CO 2 . Recently, data about the solubility of many pharmaceuticals in SC-CO 2 have been measured experimentally and published in the literature.…”