Dye Extraction Research Articles

Extraction of Natural Dyes, Characterizations and their Ecofriendly Applications

Natural dyes produce an extraordinary variety of products and complex colors that complements each other. Straight off a day synthetic dye leads to high environmental pollution. In recent year, the interest of researchers has changed over on utilizing natural dyes in textiles, food and cosmetics industries. Natural dye sources are eco-friendly and permanent in fabrics. The present study focused on the extraction of dyes from plant materials such as leaves, tubers and flower plants. The obtained dyes yield a variety of colors and are processed with different types of mordants such as aluminum acetate and cream of tartar. In this artical, our research focus on synthesis of azo dyes and compare it with natural dyes. We extracted number of natural dyes and find out of application in dying field. Natural dyes worldwide should be increased to prevent us from pollution and other harmful effects.

Exploring Ultrasonic‐Assisted Extraction and Eco‐Friendly Dyeing of Organic Cotton using Syzygium cumini Leaf Extracts

AbstractThe demand for natural dyes is increasing due to the negative environmental impacts of synthetic color. In fact, customers are becoming more concerned about their health and the environmentally friendly products. The aim of this research is to disclose the dye extraction process using the ultrasonic method and eco‐friendly dyeing of organic cotton knitted fabric. Initially, 10 g of Syzyguim cumini leaf powder was dissolved in 150 mL of purified water maintaining a 1 : 15 M : L ratio to extract the color. After that, the extracted dye solution was added to coloration bath following the M : L ratios of 1 : 16, 1 : 12, and 1 : 8 for producing dark, medium, and light shades, respectively. Post mordanting was done using natural lemon juice for colorfastness improvement. The color attributes were revealed by the spectrophotometric analysis. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to comprehend the successful relationship that exists among SCL dyes and organic cotton fibers, and the TGA analysis confirmed that dyed fabric is more stable than undyed fabric. Moreover, the colored sample‘s pH, formaldehyde level, and presence of forbidden Azo groups (aromatic amines) were examined. The test results revealed that very good to excellent color fastness properties were obtained and no harmful chemicals were detected in the dyed samples.

Efficient Dye Extraction from Wastewater Using Indium-MOF-Immobilized Polyvinylidene Fluoride Membranes with Selective Filtration for Enhanced Remediation.

Industrial activities have led to releasing harmful substances into the environment, necessitating the elimination of these toxic compounds from wastewater. Organic dyes, commonly found in industrial effluents, pose a threat to ecosystems and human health. Conventional treatment methods often suffer from limitations such as high cost and poor efficiency. Metal-organic frameworks (MOFs) have emerged as promising materials for selective separation, including membrane filtration (MF). Mixed-matrix membranes (MMMs) combining MOFs with polymers offer improved filtration properties. In this study, MMMs were fabricated by incorporating synthesized In-MOF with a polyvinylidene fluoride (PVDF) polymer (In-MOF@PVDF MMMs) using the nonsolvent-induced phase separation process. The MMMs were evaluated for the MF of various organic dyes, achieving notable removal efficiencies. The membrane containing 20% In-MOF (M4) demonstrated exceptional performance, removing 99% of the methylene blue (MB) dye. Additionally, membrane M4 effectively filtered Azure A (AZA), Azure B (AZB), and toluidine blue O (TOLO) with a removal efficiency of 99%. However, for Rhodamine B (RHB) and methyl orange (MO), the removal efficiencies were slightly lower at 74 and 39%, respectively. Further, these membranes are utilized in selective dye filtration in the MB+/RHB+ and MB+/MO- systems, where the selectivity was found for MB. The isothermal and DFT studies revealed the membrane's behavior with dye mixtures, while water stability and regeneration studies confirmed its durability. Thus, these findings highlight the potential of In-MOF@PVDF MMMs for effective and selective dye removal in wastewater treatment applications.

Extraction and characterization of natural dye from leaves of Lannea coromandelica and application on cotton fabric

Purpose The purpose of this study is to extract and characterize a novel natural dye from the leaves of Lannea coromandelica and the extraction with finding ways of dyeing cotton fabric using three mordants. Design/methodology/approach The colouring agents were extracted from the leaves of Lannea coromandelica using an aqueous extraction method. The extract was characterized using analysis methods of pH, gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared (FTIR), ultraviolet-visible (UV-vis) and cyclic voltammetry measurement. The extract was applied to cotton fabric samples using a non-mordant and three mordants under the two mordanting methods. The dyeing performance of the extracted colouring agent was evaluated using colour fastness properties, colour strength (K/S) and colour space (CIE Lab). Findings The aqueous dye extract showed reddish-brown colour, and its pH was 5.94. The GC-MS analysis revealed that the dye extract from the leaves of Lannea coromandelica contained active chemical compounds. The UV-vis and FTIR analyses found that groups influenced the reddish-brown colour of the dye extraction. The cyclic voltammetry measurements discovered the electrochemical properties of the dye extraction. The mordanted fabric samples showed better colour fastness properties than the non-mordanted fabric sample. The K/S and CIE Lab results indicate that the cotton fabric samples dyed with mordants showed more significant dye affinities than non-mordanted fabric samples. Originality/value Researchers have never discovered that the Lannea coromandelica leaf extract is a natural dye for cotton fabric dyeing. The findings of this study showed that natural dyes extracted from Lannea coromandelica leaf could be an efficient colouring agent for use in cotton fabric.

Advancement in extraction and characterization techniques of natural dyes from dye yielding plants sources: a review

Purpose Everyone is extremely concerned about environmental protection and health safety due to the rise in living standards. Plant-derived natural dyes have garnered much industrial attention in food, pharmaceutical, textile, cosmetics, etc. owing to their health and environmental benefits. The present study aims to focus on the elimination of the use of synthetic dyes and provides brief information about natural dyes, their sources, extraction procedures with characterization and various advantages and disadvantages. Design/methodology/approach In producing natural colors, extraction and purification are essential steps. Various conventional methods used till date have a low yield, as these consume a lot of solvent volume, time, labor and energy or may destroy the coloring behavior of the actual molecules. The establishment of proper characterization and certification protocols for natural dyes would improve the yielding of natural dyes and benefit both producers and users. Findings However, scientists have found modern extraction methods to obtain maximum color yield. They are also modifying the fabric surface to appraise its uptake behavior of color. Various extraction techniques such as solvent, aqueous, enzymatic and fermentation and extraction with microwave or ultrasonic energy, supercritical fluid extraction and alkaline or acid extraction are currently available for these natural dyes and are summarized in the present review article. Originality/value If natural dye availability can be increased by the different extraction measures and the cost of purified dyes can be brought down with a proper certification mechanism, there is a wide scope for the adoption of these dyes by small-scale dyeing units.

Expression of Concern: Hydrophobic ammonium based ionic liquids for efficient extraction of textile dyes from aqueous media: Extraction study and antibacterial evaluation

Expression of Concern: Hydrophobic ammonium based ionic liquids for efficient extraction of textile dyes from aqueous media: Extraction study and antibacterial evaluation

Modern ecofriendly approach for extraction of luteolin natural dye from weld for silk fabric and wool yarn dyeing

The increasing apprehension regarding the ecological effects of synthetic dyes has prompted a transition towards sustainable and environmentally friendly substitutes in the textile sector. This research examines the eco-friendly use of a natural pigment obtained from the weld flower for dyeing of silk fabric and wool yarn. The study investigates the use of microwave-assisted extraction to acquire the luteolin based pigment found in the weld flower. An assessment is conducted to evaluate the effectiveness of microwave radiation in improving the extraction process, emphasizing its capacity to accelerate and enhance the production of the natural colorant. Moreover, the process of optimizing dyeing conditions is carried out utilizing a response surface approach, with a specific focus on parameters including temperature, time, pH, and salt content. The study also investigates the influence of mordants, such as iron salt, and aluminum salt, on improving color fastness and attaining bright and enduring hues. The study expands its research to examine the impacts of plant-based extracts, such as madder root, and oak, as bio-mordants for producing a wide array of colors. The study additionally highlights the favorable influence on color fastness, exhibiting significant enhancements in light fastness, wash fastness, and rubbing fastness for both silk and wool. The measurable results validate the effectiveness of the suggested environmentally friendly dyeing techniques, provide numerical evidence of their suitability for sustainable textile manufacturing.

Protolytic properties of methyl yellow both in water-ethanol medium and in hardened gelatin gel with the presence of sodium dodecylsulphate and tetrabutylammonium chloride

This paper presents the results of studying the acid-base properties of the indicator dye methyl yellow in water–ethanol solutions with a volume fraction of alcohol of 10 % and 50 %. The influence of the addition of NaCl salts and tetrabutylammonium chloride, as well as the anionic surfactant sodium dodecylsulfate (SDS) on the acidity constant of the indicator, was evaluated. Under the chosen conditions, ethanol additives have a more significant effect on the pKa value. For the first time, using the dynamic light scattering method, the particle sizes, polydispersity index, and ζ-potential of colloidal particles in pure aqueous and mixed water–ethanol solutions of methyl yellow (φalcohol from 0.2 % to 50 %) in the presence of NaCl and SDS were estimated. In solutions with φalcohol = 50 % colloidal particles were not found. It has been shown that the hardened gelatin gel of photographic film can be used as a convenient sorbent for methyl yellow. In the process of dye extraction into a gelatin film from water-alcohol solutions containing SDS and NaCl, the acid-base properties of the methyl yellow remained almost unchanged. The difference between the pKa values obtained for the indicator both in solution and in the film did not exceed the measurement error.

Evaluation of the effect of Beetroot Dye on Banana Pseudo Stem and Pineapple Leaves Fibres

Extraction and characterization of dye from beetroot scientifically known as Beta vulgaris was achieved. The dye was extracted using two extraction method namely Soxhlet with methanol as solvent and water where the beetroot powder was soaked in water and heat at 30-400C for 2 hours. It was observed that due to instability of beetroot dye at high temperature, aqueous dye extraction is preferable over Soxhlet extraction as the one extracted with Soxhlet changed its color from purple to black brown. Moreso, the extracted dye was characterized. Qualitative photochemical analysis, Anti-bacterial activities, Fourier Transformer Infrared, Ultra Violet Spectroscopy are the analysis conducted. The photochemical analysis revealed the presence of Saponin, Flavonoids, Phenols, Betacyanin with the absence of Tanin and Glycosides. The anti-microbial activities of the dye was conducted using to microorganism namely, Escherichia coli and Staphylococcus aureus with Muller-Hinton Agar. The dye showed antimicrobial activities on Escherichia coli while it could not show any antimicrobial activities on Staphylococcus aureus microorganism. Also, UV-visible spectrum of the dye was conducted and the results showed the presence of betacyanins which are major compounds found in beetroot dye the major one being betanin. The presence of betanin in the dye was also confirmed by the FTIR as well as gas chromatography. Betanin is a major compound found in beetroot which is soluble in water due to the presence of polar groups such as COOH, OH, and NH2, thus the beetroot extract is a dye and not a pigment. Furthermore, dyeing of the extracted dye to treated banana pseudo stem and pineapple leaves fibres shows that it is feasible and the color fastness test conducted shows that both aluminum ammonium sulphate and aluminum acetate mordants can be used separately in simultaneous mordanting methods. Keywords: Beetroot, Extraction, Characterization, Dye, Banana pseudo-stem and pineapple leaves fibres and color fastness.

Delving into judiciously extracted inexpensive micro-algal dyes for DSSCs: Spectral decipherment and time-oriented extraction systems

The temperature and extraction techniques used for natural dye fabrication in dye-sensitized solar cells have significant implications for the future economy, influencing the efficiency and yield of dye extraction. This study analyzes the optical properties of microalgal dyes, examining reflectance and photo-electron energy scans, alongside emission rates in the UV–visible region, using aqueous methanol and ethanol solvents. Different time-oriented extraction methods, involving heating and a combination of sonication and heating, are assessed for their impact on specific and non-specific dye and pigment peaks. Extended heating periods result in dye degradation, while longer sonication proves efficient at 60 °C. The sonication technique's efficiency exponentially increases with Scenedesmus sp. concentration but not as much with Asterarcys quadricellulare at 60 °C. Asterarcys quadricellulare exhibits higher efficiency with ethanol, especially at 80 °C, and performs comparably with Scenedesmus sp. The optimal heating duration ranges from 10 to 25 min, while sonication is more efficient within 25 to 40 min for both temperatures.

The UV-Vis spectrophotometric studies of natural dye absorption on a <i>Sida-rhombifolia</i>/Cotton blended fabric

The environmental considerations in natural dye have gained prominence in the contemporary textile processing industry. Natural dyes  have been exploited from a variety of plants. Some of these natural dyes have no substantive for cellulose fabrics so requires assistance  of mordant during its application. Techniques were developed to extract dyes from red sandal wood (RSW) and avocado seed (AS) for the dyeing of Sida-rhombifolia blended fabric (SRBF). Solvent (ethanol and acetone) extraction method was found suitable for the dye  extraction from red sandal wood and avocado seed. UV-Vis spectrophotometric studies were investigated on the dye absorption. Dyeing  with RSW exhibited better rate of absorbance colour than AS dye. The concentration of each dye was determined using a calibration  curve. The R2 = 0.9669 for RSW and R2 = 0.9895 for AS values accompanied the calibration curve and were considered good. Absorbance/ exhaustion of dyes were determined and characterization was done by carrying out kinetic/equilibrium absorption and the  thermodynamic absorption of isotherms. The kinetic and thermodynamic studies of red sandal wood dyes have higher rate of dyeing and  higher affinity value of 28.3KJ/mol-1 at 80°C for SRBF than avocado seeds with affinity value of 14.09KJ/ mol-1 . The enthalpy and  entropy of dyeing were also found to be positive for both dyes, hence confirming the increasing randomness at the solid/solution  interface during the absorption of dyes. Washing and Rubbing Fastness properties were investigated according to the British Standard  (EN BS 20105). The results ranged from 4-5 according to grey scale standard indicating that the colour on a dyed fabric can strongly resist  fading out when washed or rubbed against a white fabric. It can be concluded that natural plants in Cameroon have considerable  potentials as a source of natural dye.  

Maximizing methyl red dye removal efficiency: a targeted parameter approach

AbstractBACKGROUNDLiquid–liquid extraction plays a crucial role in the chemical industry for obtaining valuable products. This research focuses on optimizing key parameters, namely dye removal percentage, solvent capacity and distribution coefficient, in the liquid–liquid extraction of methyl red dye from its aqueous solution using benzene as the extractant. The study investigates the influence of key variables, including feed dye concentration (20–100) ppm, extraction time (10–30) min and dye solution‐to‐solvent ratio (1–3) mL mL−1. The experiments are conducted at a constant pH of 3 and controlled temperatures of 27 ± 2 °C.RESULTSBy strategically controlling various parameters, this investigation aims to achieve superior outcomes, surpassing prior achievements in similar experimental conditions. Utilizing the Box–Behnken design for optimization, the research attains a remarkable recovery efficiency of 84.61%. The achieved optimal values for dye removal, distribution coefficient and solvent capacity are (84.61 ± 5.07)%, 5.22 ± 0.31 and (5.17 ± 0.94) ppm, respectively, at a feed dye concentration of 20 ppm, an extraction time of 27.994 min and a dye solution‐to‐solvent ratio of 3 mL mL−1.CONCLUSIONThese findings underscore the potential for maximizing methyl red dye extraction efficiency and surpass previously reported efficiency levels using the presented parameters with the same input data. The study contributes to advancements in liquid–liquid extraction technology and provides a deeper understanding of the optimization process with technical precision. © 2024 Society of Chemical Industry (SCI).

Covalent organic framework/layered double hydroxide composite-coated poly(ether ether ketone) jacket for stir bar sorptive extraction of Sudan dyes.

A novel coating for stir bar sorptive extraction was developed by growing a covalent organic framework, TpPa-1 (derived from phenylenediamine and 1,3,5-trimethylphloroglucinol), onto the surface of Ni-Al layered double hydroxide. Using a poly(ether ether ketone) tube as the supporting substrate, a TpPa-1/layered double hydroxide-coated stir bar was fabricated and demonstrated excellent extraction performance for Sudan dyes. Notably, its extraction efficiency significantly exceeded that of stir bars modified with only TpPa-1 or Ni-Al layered double hydroxide. Based on this innovative coating, a stir bar sorptive extraction-high performance liquid chromatography method was established. This method exhibited low limits of detection (0.04-0.08ng/mL) for the analysis of Sudan dyes. It also featured a wide linear range (0.25-100 or 200ng/mL) and demonstrated good repeatability with relative standard deviations ≤6.22%. The recoveries obtained for spiked lake water and chili powder samples were 93.5%-105.2% and 87.8%-100.6%, respectively, demonstrating the practical potential of the developed method for detecting trace Sudan dyes in real samples.

Utilization of natural dyes extracted from mustard flower (Genus: Brassica, Species: Napus) as photosensitizer for DSSC: Experimental and computational studies

Dye-sensitized solar cells (DSSC) are considered as one of the most promising photovoltaic technologies, while exploring alternatives to traditional silicon-based solar cells. Dye sensitizer is a very important component of DSSC and the use of natural dyes in these cells is a promising development for this technology, as it has non-hazardous impact on the environment. This work reports the new natural dye extracted from Brassica Napus flower petals and used as sensitizer in TiO2 based DSSC. UV–Vis spectra showed the presence of carotenoid and flavonoid pigments along with broad absorption in dye loaded TiO2. FITR revealed functional groups in the Brassica Napus dye extract. Mass spectroscopy was used to find major constituents present in extract. With the natural Brassica Napus sensitizer and TiO2, photovoltaic performance results viz. conversion efficiency (ɳ%) 0.062, short circuit current density (Jsc) 0.45 mA/cm2, open circuit voltage (Voc) 0.260 V and fill factor (FF) 0.52 were observed. Further, HOMO-LUMO levels of constituents present in Brassica Napus have been measured via CV measurements and compared with relative energetic obtained by computational studies. The transport characteristics revealed from EIS studies were used to rationalize the observed photo-voltaic performance of the DSSC.

Solvent selection for anthrocyanin dye extraction from Kigelia Africana and Hibiscus sabdariffa for dye sensitized solar cells

The main flavonoid pigment in the petals of Kigelia Africana and the calyx of Hibiscus sabdariffa is anthocyanin, responsible for the vibrant red, maroon, and purple hues in flowers. This pigment can modulate incident light on flowers, prompting its selection for detailed investigation. TiO2 nanostructures were synthesized using a one-step hydrothermal method, revealing the formation of nanorods and a single-phase rutile structure through FESEM and XRD analyses, respectively. The study aimed to assess the impact of various solvents on the extraction of natural dyes, which were subsequently sensitized on TiO2 photoanodes for DSSC applications. Four solvents-water, water with HCl, ethanol, and citric acid were employed to extract natural dyes from Kigelia Africana's petals and Hibiscus sabdariffa's calyx. Notably, dyes extracted with citric acid demonstrated promising results. The conversion efficiency of DSSCs fabricated with Kigelia Africana dye and Hibiscus sabdariffa dye, extracted using citric acid as the solvent, was found to be 0.87 % and 0.92 %, respectively. The implications of these findings are discussed.

Evaluation of the Dye Extraction Using Designed Hydrogels for Further Applications towards Water Treatment.

In this work, novel chitosan-silica hydrogels were synthesized and investigated by various complementary techniques. The hydrogels were obtained via the immobilization of chitosan (Ch) on the surface of mesoporous cellular foams (MCFs). The latter silica materials were obtained by a sol-gel process, varying the composition of the reaction mixture (copolymer Pluronic 9400 or Pluronic 10500) and the ageing temperature conditions (80 °C or 100 °C). The role of the silica phase in the hydrogels was the formation of a scaffold for the biopolymeric chitosan component and providing chemical, mechanical, and thermal stability. In turn, the chitosan phase enabled the binding of anionic pollutions from aqueous solutions based on electrostatic interaction mechanisms and hydrogen bonds. To provide information on structural, morphological, and surface properties of the chitosan-silica hydrogels, analyses such as the low-temperature adsorption/desorption of nitrogen, small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), atomic force microscopy (AFM), and Fourier-transform infrared spectroscopy (FTIR) were performed. Moreover, the verification of the utility of the chitosan-silica hydrogels as adsorbents for water and wastewater treatment was carried out based on kinetic and equilibrium studies of the Acid Red 88 (AR88) adsorption. Adsorption data were analyzed by applying various equations and discussed in terms of the adsorption on heterogeneous solid-surfaces theory. The adsorption mechanism for the AR88 dye-chitosan-silica hydrogel systems was proposed.

Characteristics of probiotic glutinous rice tapai with the addition of Lactobacillus plantarum 1 RN2-53 and some natural dyes

Tapai is a traditional Indonesian food usually made from cassava and glutinous rice. The study aims to determine natural dyes that produce the highest quality probiotic glutinous rice tapai. The study was conducted experimentally using a complete randomized design consisting of four treatments, and each treatment was repeated four times. The treatment in this study was the soaking of glutinous rice into natural dye extracts, namely red dragon fruit extract, purple sweet potato extract, and suji leaf extract, with different concentrations, namely 10%, 15%, 20%, and 25%. The data obtained were statistically analyzed using variance analysis and continued with Duncan's new multiple-range test (DNMRT) at a level of 5%.  The results showed that natural dye extracts with different concentrations have a noticeable influence on total lactic acid, alcohol content, total lactic acid bacteria, antioxidant activity, and sensory characteristics of color, aroma, taste, and hardness.  The soaking treatment in red dragon fruit extract and purple sweet potato extract with a concentration of 20% resulted in glutinous rice tapai, preferred by panelists. Furthermore, the characteristic pH value of 3.35-3.41, total lactic acid 0.61-0.70%, alcohol content 0.33-0.42%, total lactic acid bacteria 9.11-9.40 CFU/mL, and antioxidant activity 167.35-102.51 ppm.

Dyeing of Pineapple Leaf Fibers Using Various Natural Dye Extracts and Mordants

ABSTRACT Pineapple leaf fiber is an environment-friendly natural fiber that does not harm any natural substance. To produce commercially available and attractive textile materials, pineapple leaf fibers were bleached with hydrogen peroxide and colored with natural dyes. Four natural dyes (turmeric powder, ebony fruit, lac, and sappan wood) were selected as natural sources for the extraction of natural colorants with and without salt, alum, and lime as mordants. The hydrogen peroxide concentration of 10 %owf, liquor ratio of 1:100, contact time of 30 min, and bleaching temperature of 70 °C were found to be the optimum bleaching parameters. The uses of different types of mordant on natural dyes give a variety of shades. The positive value of color axes (a* and b*) was an affirmation of mixture of red and yellow colors of mordanted-dyed PALF. PALF displayed a satisfactory dyeing performance for ebony fruit extracted dye with adequate fastness properties (from good to excellent) for light, wash, and perspiration, whether unmordanted or mordanted. Meta-mordanting increased the colorfastness properties of the samples. Results show excellent coloring ability for pineapple fiber dyeing, which can be a potential substitute for synthetic fiber as a sustainable approach to clean production.

Flavonoid‐based yellow dye extract from safflower (Carthamus tinctorius L.) combined with chitosan for anti‐bacterial and ultraviolet‐protective functionalisation of silk

AbstractIn the modern period, scientists are interested in the functional properties of natural materials. The present study is the first report on the use of safflower (Carthamus tinctorius L.) yellow dye extract combined with chitosan bio‐mordant for enhancing the anti‐bacterial and ultraviolet‐protective activities of silk. The presence of flavonoid‐based compounds in the dye extract was verified using liquid chromatography–mass spectrometry, Fourier transform‐infrared spectroscopy, and ultraviolet‐visible techniques. Moreover, alum mordant was also utilised in the silk dyeing process to compare the efficiency of bio and metallic mordanting agents. Experiment outcomes revealed that the chitosan mordanted‐dyed silk sustained adequate fastness after being tested by washing, light, wet‐rubbing, and dry‐rubbing. In addition, superb bacterial inhibition percentages of 89% and 76% against Escherichia coli and Staphylococcus aureus, individually, were accomplished. Furthermore, the ultraviolet‐protective behaviour of this silk sample was demonstrated with a 50+ ultraviolet protection factor and low‐grade ultraviolet transmittance. This study reveals the great performance of an organic flavonoid dye as a sustainable and environmentally‐friendly substance for dyeing and functionalising silk, as well as the efficacy of a green mordant over a metallic mordant in increasing the dyeability and functional activities of silk.

Innovative Sol-gel functionalized polyurethane foam for sustainable water purification and analytical advances.

Nanomaterial combined polymeric membranes such as polyurethane foams (PUFs) have garnered enormous attention in the field of water purification due to their ease of management and surface modification, cost-effectiveness, and mechanical, chemical, and thermal properties. Thus, this study reports the use of novel Sol-gel impregnated polyurethane foams (Sol-gel/PUFs) as new dispersive solid phase microextractors (d- µ SPME) for the efficient separation and subsequent spectrophotometric detection of Eosin Y (EY) textile dye in an aqueous solution with a pH of 3-3.8. The Sol gel, PUFs, and Sol gel-impregnated PUFs were characterized using scanning electron microscopy (SEM), goniometry measurements, dynamic light scattering (DLS), energy dispersive spectroscopy (EDS), UV-Visible, and FTIR spectra. Batch experiment results displayed a remarkable removal percentage (96% ± 5.4%) of the EY from the aqueous solution, with the total sorption time not exceeding 60min. These data indicate rate-limited sorption via diffusion and/or surface complex ion associate formations after the rapid initial sorption steps. A pseudo-second order kinetic model thoroughly explained the sorption kinetics, providing a sorption capacity (qe) of 37.64mgg-1, a half-life time (t1/2) of 0.8 ± 0.01min, and intrinsic penetration control dye retention. The thermodynamic results revealed a negative value for ΔG⁰ (-78.07kJmol-1 at 293K), clearly signifying that the dye uptake was spontaneous, as well as a negative value for ΔH⁰ (-69.58kJmol-1) and a positive value for ΔS⁰ (147.65Jmol-1 K-1), making clear the exothermic nature of EY adsorption onto the sorbent, with a growth in randomness at the molecular level. A ternary retention mechanism is proposed, involving the "weak base anion exchanger" of {(-CH2-OH+ -CH2-) (Dye anion)-}Sol-gel/PUF and/or {(-NH2 + -COO-) (Dye anion)-}Sol-gel/PUF via solvent extraction and "surface adsorption" of the dye anion on/in the Sol-gel/PUFs membranes in addition to H-bonding, including surface complexation and electrostatic π-π interaction, between the dye and the silicon/zirconium oxide (Si-O-Zr) and siloxane (Si-O-Si) groups on the sorbent. Complete extraction and recovery (93.65 ± 0.2, -102.28 ± 2.01) of EY dye with NaOH (0.5M) as a proper eluting agent was achieved using a sorbent-packed mini column. In addition, the established extractor displayed excellent reusability and does not require organic solvents for EY enrichment in water samples, making it a talented nominee as a novel sorbent for EY sorption from wastewater. This study is of great consequence for expanding the applicatio1n of Sol-gel/PUFs in developing innovative spectrophotometric sensing strategies for dye determination. In view of this, it would also be remarkable to perform future studies to explore the analytical implications of this extractor regarding safety and environmental and public health issues associated to the pollutant.