Tartrazine Dye Research Articles

Sketching feasibility of additively manufactured different size gradient conventional hollow capsular shells (HCSs) by selective laser sintering (SLS): From design to applications

Additive manufacturing (AM) is widely used to fabricate 3D printed objects from Computer-aided Design (CAD) prepared using the SolidWorks CAD modelling software. Different printing techniques are used to fabricate desired 3D objects; among all these techniques, it is widely accepted that SLS is one of the most effective methods of 3D printing for fabricating drug-loaded solid oral dosage forms (SODFs) in bulk quantities using the single-step process. Different SODFs, such as pills, miniprintlets, dual miniprintlets, and tablets, were fabricated with different sizes and shapes. In this study, for the first time, we introduce SLS-mediated hollow capsular shells (HCSs) with the help of the SLS 3D printing technique. This work aimed to explore the sinterability and feasibility of sketching HCSs using the SLS-mediated sintering technique with different marketed sizes of capsules ranging from 000 to 5. Here, we have utilized Kolliphor P 188 (KP 188) and Kollidon SR (KSR) in a 1:1 ratio as a matrix-forming agent and 1% charcoal as a laser absorption-enhancing material. In accordance with the CAD models, we have fabricated the gradient conventional different sizes of HCSs ranging from 000 to 5 using the constant printing parameters and composition. Fabricated all biobased HCSs were subjected to the assessment of mechanistic and physicochemical parameters using varied analytical tools. In the current study, tartrazine dye is used to assess the release pattern from HCSs, which resulted in the modified release pattern. The adapted approach will be the futuristic approach to replace animal-based gelatin capsules with pharmaceutical-grade polymer-based HCSs with a modified release with optimum mechanical strength.

FABRICATION OF NANOSTRUCTURED IRON AND ZINC PARTICLES BY DIOSPYROS CHLOROXYLON (ROXB.) LEAF EXTRACT: CHARACTERIZATION, ADSORPTION MODELING AND CARCINOGENIC DYE ADSORPTION APPLICATIONS

Objective: The discharge of these synthetic food dyes, such as sunset yellow and tartrazine, into industrial wastewater can lead to significant environmental and health issues. Its removal through effective adsorption presents an economical and efficient solution. Hence this study proposed to fabricate metal nanoparticles for the adsorption of carcinogenic dyes. Methods: The fabrication of iron and zinc nanoparticles employed the green synthesis methodology, utilizing an aqueous extract of Diospyros chloroxylon (Roxb.) as a reducing agent. The fabricated nanoparticles were characterized using TEM (Transmission Electron Microscopy), EDX (Energy-Dispersive X-ray Spectroscopy), SEM (Scanning Electron Microscopy), FTIR (Fourier-Transform Infrared Spectroscopy), and UV-Visible Spectroscopy. The nanoparticles were studied for its efficiency for the adsorption of carcinogenic dyes such as tartrazine and Sunset Yellow. Results: The iron nanoparticles were noticed to be uniformly distributed rod-shaped particles having smooth surfaces with 23-51 nm size range and an average particle size of 34 nm. Whereas the iron nanoparticles were noticed to be uniformly distributed spherical to oval shape with 35 nm to 68 nm size range and an average particle size 53 nm. The XRD results confirm that the iron nanoparticles were rhombohedral phase structure with 71.91 % of elemental iron whereas the zinc nanoparticles were noticed to be hexagonal Wurtzite phase structure having 69.4 % of metallic zinc. These synthesized nanoparticles were applied for the removal of sunset yellow and tartrazine dyes were investigated and found more than 90 % was removed. Adsorption isotherm study was best fitted with Langmuir model, and the maximal adsorption capacity was found to be 52.18 and 75.04 mg/g for sunset yellow using iron and zinc nanoparticles, whereas tartrazine maximum adsorption capacity was noticed to be 69.96 and 84.24 mg/g for iron and zinc nanoparticles. The adsorption reaction follows pseudo-first-order kinetics with high correlation coefficient. Repeated cycles of regeneration, reuse and stability showed very high removal efficiency and stability. Conclusion: The biosynthesis of metal nanoparticles demonstrates substantial promise for applications in environmental protection.

Potential of green-based microporous carbon for advanced water decontamination from azo dyes: Experiment and molecular dynamic simulation studies

Due to severe limitations in clean water resources, there has been an intensified focus on developing cost-effective, remarkably efficient, and recyclable adsorbents to enhance water quality. In this work, a cost-effective biobased activated carbon (AC) adsorbent was synthesized from date palm bark wastes and applied for the removal of two azo dye pollutants sunset yellow (SY), and tartrazine (TZ) from wastewater. The as-prepared powder of activated carbon was fully characterized using different analytical techniques including XRD, FTIR, XPS, Raman spectroscopy, zeta potential, FESEM, pHPZC and N2 adsorption-desorption analysis. These analyses revealed that the resulting biobased AC exhibited a graphene-like layered structure with a noticeable degree of structural order, decorated with diverse surface functional groups. The highly porous structure also demonstrated significant adsorption capacity for SY, and TZ contaminants, particularly at ambient temperatures. It achieved maximum uptakes of approximately 90 mg/g, and 65 mg/g for SY, and TZ respectively, spanning a wide pH range. Moreover, in-depth studies of the adsorption process, including kinetic and thermodynamic analyses, unveiled a chemical, spontaneous, and endothermic sorption mechanism for both SY, and TZ dyes, following a pseudo-second-order model adsorption behavior on the AC structure. Finally, an accurate adsorption mechanism has been proposed for the adsorption of dyes confirmed by experiments and molecular dynamic simulations.

Adsorption Kinetics of Tartrazine Dye on Activated Carbon Derived from Guava (Psidium guajava) Seeds

Azo dyes are widely used in various industries. However, many of these dyes are carcinogenic and reduce light penetration into aqueous systems, posing a threat to human health and hampering photosynthesis in aquatic environments. In this study, guava seeds were used to produce activated carbon by chemical activation with ZnCl2. The carbon was characterized and used as an adsorbent to remove tartrazine dye in aqueous medium. X-ray diffraction showed the formation of a material with disordered graphitic planes, typical of activated carbons. The equilibrium time for the dyeactivated carbon system was found to be 80 min by the Southwell plot method. The adsorbent removed 97.6% of the dye, representing an adsorbed concentration of 1.62 mg g−1 for an adsorbent dosage of 12 g L−1. The pseudo-second-order and Elovich kinetic models provided the best fit to experimental data, suggesting that chemisorption is the predominant mechanism, combined with the effect of surface heterogeneity. From an environmental point of view, the results suggest that the activated carbon produced is an efficient material for the treatment of industrial wastewater containing azo dyes.

Degradation of tartrazine dye using advanced oxidation process: Application of response surface methodology for optimization

Among the azo dye, Tartrazine is widely used for most of applications like pharmaceuticals, cosmetics, food, etc. As the demand for dye application is increased, the disposal of dye is also increasing. However it is very difficult to cleave due to its stability. Different methods are available, but the Advanced Oxidation Process (AOP) is an emerging technique used for treating various contaminants. In this study, sulfate radical (SO4−.) based AOP was performed to degrade tartrazine dye using iron oxide (Fe3O4) nanoparticles (NP). This NP was synthesized using the co-precipitation method, analyzed by X-Ray Diffraction (XRD), revealed the crystalline structure of the material and the average size of the particle was 16.17 nm also High Resolution- Scanning Electron Microscope (HR-SEM) showed spherical and cube shape of the particles with agglomeration. Response surface methodology (RSM) was carried out to determine the optimum condition based on central composite design. The optimum conditions were found to be pH-5.34, time- 113.58 min, NP- 0.89 g, SPS- 15.40 mM, and predicted degradation efficiency - 97.22% which was correlated to the experimental value- 96.66% with minimal error. Application of SO4−. radical implied an efficient degradation due to the involvement of both SO4−. and hydroxyl (OH-.) radical. Excess formation of SO4−. radicals, Fe2+ was majorily responsible for suppressive degradation. The intermediate compound was identified from Gas Chromatography-Mass Spectrometry (GC-MS), proved the absence of parent dye and occurrence of degradation due to Fe3O4/PS system.

Green synthesis of Co3O4 nanoparticles using spent coffee: Application in catalytic and photocatalytic dye degradation

Clean water is vital for societal progress, however, the pollution caused by dyes presents a significant global challenge. Dye-contaminated industrial effluent overwhelms wastewater treatment facilities, causing harm to water bodies and ecosystems. This study demonstrates the synthesis of Co3O4 nanoparticles using spent coffee extract as a bioreducing agent and its application in dye degradation. The structural and optical properties of nanostructures were confirmed using X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), and UV–vis spectroscopy. The Co3O4-activated peroxymonosulfate (PMS) system exhibited exceptional catalytic efficiency by attaining a degradation rate of 89.27 % for Tartrazine dye within a 30-minute timeframe, even in the absence of illumination. When exposed to simulated visible light, the degradation kinetic rate increased by 37.60 %, highlighting the excellent photocatalytic activity of Co3O4 nanoparticles. Furthermore, leveraging natural sunlight led to a notable Tartrazine degradation rate of 97.11 %, signifying a substantial 45.41 % enhancement in reaction efficiency when contrasted with the conventional Co3O4/PMS system. Lastly, the Co3O4 nanoparticles illustrated remarkable degradation of synthetic industrial dye effluents (Tartrazine, Methyl Orange, and Remazol Brilliant Red), reaching up to 92.77 % removal, indicating its potential for use in real-world scenarios.

Nitrophenylfurfural grafted amino functionalized silica nanoparticles for adsorptive removal of tartrazine dye from water

Synthesis of novel nitrophenylfurfural grafted silica nanoparticles (NPF–SiNPs) having multifunctional properties is reported for removal of tartrazine dye.

Katalitička aktivnost uzoraka pseudobemita impregnisanih različitim koncentracijama kobalta u oksidativnoj degradaciji tartrazina u prisustvu Oksona

Pseudoboehmite was impregnated with cobalt using a incipient wetness impregnation method. Two different concentrations of cobalt were used for impregnation: 3 mas% and 6 mas% of Co2+ relative to the mass of pseudoboehmite. The obtained materials were calcined at 500 ºC. The synthesized catalysts were tested in the process of oxidative degradation of tartrazine dye in the presence of Oxon as a source of sulfate anion radicals. The influence of temperature on the dye degradation efficiency was investigated. It was observed that the degradation rate increases with the increasing of temperature. The experimentally obtained results were tested using the most common kinetic models and it was found that the reaction follows a pseudo-first order rate in all cases. It was also observed that with an increase in the cobalt content, the efficiency of the catalyst increases. In order to determine which reactive oxidative species is dominant in the investigated process, tertiary buthalnol and ethanol was added to the reaction system. According to the experimental results sulfate anion radicals were found to be the dominant reactive species.

Assessment of Liver and Kidney Profile in Broiler Chicken Exposed to Food Azo Dye Tartrazine

Food additives give the aesthetic appearance of the materials desired by consumers. These have been categorized into preservatives, antioxidants, colorants, emulsifiers, flavors, and filters. Tartrazine is one of the AZO dyes and is a commonly used food color that provides a lemon-yellow color. There is conflicting data available about the toxic effects of tartrazine. Objective: To determine the effects of tartrazine on the liver and kidney profiles of broiler chickens. Methods: For this purpose, forty-five broiler chickens were taken and divided into three groups, each with fifteen chickens. The two experimental chicken groups were treated with 5mg and 10 mg doses of tartrazine. The observed parameters included serum-level creatinine, urea, alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Results: The parameters serum level urea, serum level creatinine, ALT and AST have shown significant increase in experimental group I and II as compared to control group. Conclusions: All the parameters observed in this study were increased compared to the control group. AST and ALT parameters increased in experimental groups showing liver damage.

Catalytic Ozonation of Tartrazine Dye Wastewater Using NiAl2O4/NiO@γ-Al2O3: Catalyst Preparation and Performance

ABSTRACT In this study, a novel NiAl2O4/NiO@γ-Al2O3 catalyst was prepared by the impregnation-calcination method and used for the catalytic ozonation of tartrazine wastewater. The NiAl2O4/NiO@γ-Al2O3 catalyst were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and nitrogen adsorption-desorption experiments. It was found that NiAl2O4/NiO@γ-Al2O3 significantly improved the removal of chemical oxygen demand of the dye wastewater from 40% for the direct ozone oxidation to 65%, and the ozone concentration depletion for catalytic ozonation was 120% of that for ozone alone. The catalytic activity of the catalyst did not significantly decrease after reuse for six cycles and leaching concentration of metal ions less than 1%. However, the toxicity of the dye wastewater was greatly reduced after the catalytic ozonation. The pyridine Fourier transform infrared spectroscopy showed the catalytic ozonation reaction was related with Lewis acid sites. The presence of hydroxyl radicals, superoxide anion radicals, and singlet oxygen was verified by an electron paramagnetic resonance, and the quenching experiments confirmed that the removal of organic pollutants from the tartrazine wastewater mainly relied on hydroxyl radicals and singlet oxygen. Therefore, the NiAl2O4/NiO@γ-Al2O3 could be an effective catalyst for the rapid catalytic ozonation of dye wastewater.

Exploration of Solvation Consequences of Ionic Liquids Prevalent in the Aqueous Media of Food Additive Azo Dye Tartrazine by Physicochemical and Computational Studies

Exploration of Solvation Consequences of Ionic Liquids Prevalent in the Aqueous Media of Food Additive Azo Dye Tartrazine by Physicochemical and Computational Studies

A Voltammetric Sensor Based on Carbon Veil Modified with Graphene and Phytosynthesized Cobalt Oxide Nanoparticles for the Determination of Food Dyes Tartrazine (E102) and Allura Red (E129)

A Voltammetric Sensor Based on Carbon Veil Modified with Graphene and Phytosynthesized Cobalt Oxide Nanoparticles for the Determination of Food Dyes Tartrazine (E102) and Allura Red (E129)

A Voltammetric Sensor Based on Carbon Veil Modified with Graphene and Phytosynthesized Cobalt Oxide Nanoparticles for the Determination of Food Dyes Tartrazine (E102) and Allura Red (E129)

A voltammetric sensor based on carbon veil modified with graphene nanoplates and phytosynthesized cobalt oxide Co3O4 nanoparticles is proposed for the determination of tartrazine (E102) and allura red AC (E129). The use of a composite nanomodifier contributes to an increase and better separation of the oxidation currents of azo dyes on their simultaneous presence. The process of the oxidation of azo dyes is irreversible, involves two electrons, and has a mixed nature. The sensor is characterized by a low limit of detection: 30 nM for E102 and 27 nM for E129, and in the inversion mode 16 and 3 nM, respectively. The analytical range the dyes is 0.1–15 µM. The sensor has been successfully used in the analysis of fruit jellies and beverage. The advantages of the developed sensor are high performance and operational characteristics, ease of manufacture, and low cost.

Exploring the interactions of anionic dye tartrazine with cationic surfactants in aqueous solution: Insights into micellization and interfacial properties

Different techniques such as conductometric, tensiometric and spectroscopic methods were deployed to investigate the interactions of tartrazine (TZ) dye with cetyltrimethylammonium bromide (CTAB) and cetylpyridinium bromide (CPB) in aqueous media at four temperatures. Results revealed a lower cmc values for CPB as compared to CTAB in presence/or absence of aqueous TZ solutions. A qualitative analysis, using UV–vis spectroscopy, was carried out to understand the interactions between the dye TZ and CTAB/CPB in the premicellar and post micellar phase. Interfacial properties such as surface excess concentration (Γmax), area occupied per surfactant molecule (Amin), surface pressure (πcmc), standard Gibbs energy of adsorption (ΔGado), packing parameter (P), etc., were evaluated at air–water/aqueous TZ solution of CTAB/CPB. The equilibrium model was used to determine the change in standard Gibbs energy (ΔGm0), enthalpy (ΔHm0), and entropy (ΔSm0) of micellization. Due to the interruption of the structured water molecules encasing the hydrophobic groups of the surfactant, the critical micelle concentration (cmc) rose with temperature. For both the studied systems, the values of ΔGm0 and ΔHm0 were negative, implying that the process of micellization is thermodynamically spontaneous and exothermic. The -TΔSm0 values, which were found to be greater than ΔHm0 values, suggest the gain in entropy primarily governs the process of micellization.

Box-Behnken design optimization of bimetallic-organic frameworks for effective removal of tartrazine food dye from aqueous solutions

Lanthanum and tin-based hetero bimetallic organic frameworks (MOFs) in the form of stacked nanorods (La/Sn@MOF) exhibit promising capabilities in removing the yellow dye Tartrazine (E102) from aqueous solutions. Various techniques such as SEM, XRD, XPS, FTIR, and BET were employed to assess the adsorbent, revealing a significant surface area of 736.82 m2/g. The study thoroughly investigated the impact of pH, initial dye concentration, adsorbent dose, contact time, and temperature on the elimination of E102 dye. The clearance of tartrazine follows the Langmuir isotherm and pseudo-second-order kinetics, with a maximum adsorption capacity of 694.72 mg/g according to the Langmuir isotherm model. The pHzpc value of 6.41 suggests favorable adsorption of anionic dyes like E102 dye at pH levels below 6.4. The adsorption process was characterized by adsorption energy of 29.46 kJ/mol, indicating a chemisorption process. Thermodynamic analysis revealed that the adsorption processes were both endothermic and spontaneous, as evidenced by the negative values for ΔGo and positive values for ΔHo. La/Sn@MOF proved to be a straightforward and effective method for treating industrial wastewater, with the added benefit of being reusable for up to five cycles. Interaction between La/Sn@MOF and E102 dye was found to involve hydrogen bonding, pore filling, and π-π interactions, among other mechanisms. Optimization of the adsorption procedure was achieved using the Box-Behnken Design method (BBD).

Enhancing PEDOT modified electrode for tartrazine sensing through the immobilization of MIL-100(Fe) metal-organic framework

BackgroundConductive poly(3,4-ethylenedioxythiophene) or PEDOT emerges as an ideal mediator in fabricating electrochemical sensors. Concurrently, porous metal-organic frameworks (MOFs) present intriguing characteristics such as sufficient surface area, stable structures, and alterable surface ligands. The combination of these two materials in fabricating sensors has started to gain significant attention. MethodsWe investigated the effectiveness of employing Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine, which is commonly used in food coloring. Our investigation encompassed two distinct approaches. Initially, we immobilized MIL-100(Fe) to the PEDOT/Pt electrode during the electrochemical synthesis of the PEDOT film. Subsequently, we pursued the attachment of MIL-100(Fe) onto the surface of the synthesized PEDOT film by applying positive or negative potentials. Significant FindingsWe have achieved favorable lower reductive potentials, competitive sensitivities, remarkable repeatability and stability for all MIL-100(Fe)/PEDOT/Pt electrodes. Interestingly, we observed the transformation of MIL-100(Fe) into a flower-like structure under -1 V potential while immobilizing on PEDOT/Pt. This structural alteration led to an approximately twofold amplification in sensitivity for tartrazine detection, reaching 1.818 μA/μM. These findings clearly indicate the potential synergies between MIL-100(Fe) and PEDOT for the fabrication of electrochemical sensors.

Preparation, analysis and toxicity characterisation of the redox metabolites of the azo food dye tartrazine

Tartrazine (E102, FD&C Yellow 5) is a vibrant yellow azo dye added to many processed foods. The safety of this ubiquitous chemical has not been fully elucidated, and it has been linked to allergic reactions and ADHD in some individuals. In our study, bacterial species isolated from human stool decolourised tartrazine and, upon exposure to air, a purple compound formed. Tartrazine is known to undergo reduction in the gut to sulfanilic acid and 4-amino-3-carboxy-5-hydroxy-1-(4-sulfophenyl)pyrazole (SCAP). These metabolites and their derivatives are relevant to the toxicology of tartrazine. The toxicity of sulfanilic acid has been studied before, but the oxidative instability of SCAP has previously prevented full characterisation. We have verified the chemical identity of SCAP and confirmed that the purple-coloured oxidation derivative is 4-(3-carboxy-5-hydroxy-1-(4-sulfophenyl)-1H-pyrazol-4-yl)imino-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid (purpurazoic acid, PPA), as proposed by Westöö in 1965. A yellow derivative of SCAP is proposed to be the hydrolysed oxidation product, 4,5-dioxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid. SCAP and PPA are moderately toxic to human cells (IC50 89 and 78 μM against HEK-293, respectively), but had no apparent effect on Escherichia coli and Bacillus subtilis bacteria. These results prompt further analyses of the toxicology of tartrazine and its derivatives.

Fabrication of eco-friendly Chitosan/Polypyrrole composite for the removal of Anionic dye from wastewater: Optimization and Modeling studies

A hetero-structured composite with remarkable adsorption performance has drawn more attention owing to its splendid performance in environmental applications. The porosity, stability, and specific surface area of Chitosan can be improved by customizing it with the appropriate bio-polymeric adsorbents, which can also exhibit strong adsorption potential. In the Present study, Chitosan (host) was fabricated via in-situ chemical oxidative polymerization strategy in different ratio. The performance of synthesized composites was tested for the adsorption of Tartrazine dye in a batch mode. Results showed a maximum adsorption efficiency of 99.02 ± 1.980% for CS/Ppy-1:1 and 96.70 ± 1.934% for CS/Ppy-1:2 for the removal of Tartrazine dye under an optimum condition (Initial concentration that is 100 mg/L (CS/Ppy-1:1) and 75 mg/L (CS/Ppy-1:2), pH = 5, Temperature = 25 °C, Adsorbent dose = 10 mg). The adsorption isotherm and kinetic fitted well with the Langmuir model and pseudo-second-order respectively. The thermodynamic study revealed that the adsorption of dye is a spontaneous process. Further, Regeneration investigations showed over 65 ± 0.142% regeneration efficiency with 0.1 M NaOH solution, confirming that the desorption was impeccable. The electrostatic force of interaction, hydrogen bonding, surface complexation, and π − π stacking interactions were all implicated in the dye adsorption mechanism on the CS/Ppy composite. Also, the proposed system treats one of the most complex azo dyes using the efficient binary composite and shows successful regeneration/recyclability of adsorbent upto four successive cycles making it a potential adsorbent for large scale upgradation.

Highly efficient and reliable voltammetry food sensor for Tartrazine dye using a nanocomposite reformed electrode

Monitoring synthetic dyes in foodstuffs holds significant importance owing to their adverse effects on human health. A modified Sol-gel process was used for synthesizing mixed metal (Copper, Iron, and Nickel oxides) nanocomposites (NCs). Ternary metal NCs were characterized using FT-IR, FE-SEM, UV–Vis, and X-ray diffraction (PXRD and GID) studies. NCs (Cu/Fe/NiO) modified working electrode was fabricated for Voltammetric detection of Tartrazine dye in soft drinks. A wide concentration range (0–500 µM) was used for the Voltammetric sensing of Tartrazine dye. Voltammetric techniques like Linear Sweep Voltammetry (LSV), Differential Pulse Voltammetry (DPV), and Cyclic Voltammetry (CV) were used for the electrochemical characterization of dye. The sensor shows a good electrochemical oxidation peak in 0.1 M sodium phosphate buffer solution (pH 6.0) as a supporting electrolyte at a scan rate of 0.01 mV s−1. The impedance spectroscopy (IS) technique was applied to examine the working electrode–electrolyte interface and film resistance. A comparative study of the sensor was done with a bare glassy carbon electrode (GCE), and a Cu-wire electrode using the CV technique. The NCs modified working electrode shows a higher oxidative peak in comparison to bare GCE and Cu-wire electrodes for sensing dye. The effect of pH and scan rate on the electrochemical oxidation of Tartrazine was also examined. The lowest detection limit of Tartrazine was 0.010 µM. The fabricated working electrode shows high sensing capability for Tartrazine dye in natural and synthetic samples. The developed sensor proved to be cost-effective, and reliable for detecting food preservatives, additives, and coloring agents.

Evaluation of Adsorbent Biomaterials Based on Coconut Mesocarp for Treatment of Wastewater Contaminated with Tartrazine Dye

The presence of synthetic dyes in industrial wastewater poses significant environmental and health concerns due to their persistent nature and potential toxicity. Tartrazine is a synthetic yellow dye known for its stability and resistance to conventional treatment methods. As a result, its discharge into natural water bodies can lead to adverse ecological impacts and can jeopardize public health. The objective of this work was to functionalize coconut shells (CSs), coconut cellulose (CC), and modified coconut cellulose (MCC) bioadsorbents with cetyl trimethyl ammonium chloride (CTAC) for their use in the elimination by adsorption of the dye tartrazine in aqueous solutions. CC was synthesized through a double extraction with sodium hydroxide, and a chemical treatment was performed with CTAC at 100 mmol L−1. The final dye concentration was determined through UV-Vis at 500 nm. An FTIR analysis showed multiple active sites, represented in groups such as hydroxyl, COO-, NHx-, and hydrocarbon compounds. Increasing the initial concentration had a positive effect on the efficiency of the process, reaching 99% removal with an adsorption capacity of 11.89 mg/g at equilibrium using MCC. The test showed that equilibrium was reached after 30 min. Initially, the removal of the dyes was rapid, about 97% of the contaminant being removed in the first 5 min. The Langmuir and Freundlich models were satisfactorily fitted to the adsorption isotherm, showing physical and chemical adsorption. It can be concluded that MCC is a promising bioadsorbent for the removal of tartrazine dye in aqueous solutions.