Removal Of Crystal Violet Dye Research Articles

Modification of nickel ferrite nanoparticles by sodium docusate surfactant for superior crystal violet dye removal from aqueous solutions.

In this study, nickel ferrite (NiFe2O4) nanoparticles were synthesized using the Pechini sol-gel method and modified with sodium docusate surfactant. The modified nanoparticles showed an enhanced adsorption capacity of 384.62mg/g for crystal violet dye, compared to 237.53mg/g for unmodified NiFe2O4. Characterization was performed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) techniques. The adsorption process was spontaneous, exothermic, and followed the Langmuir isotherm and pseudo-second-order kinetic model. Optimal conditions for maximum dye removal were achieved at pH 10, 50min, and 298K. Additionally, the synthesized adsorbents demonstrated excellent regeneration and reusability over five adsorption-desorption cycles with minimal efficiency loss.

Microfibers release during washing and, removal by tamarind fruit shell carbon filters: Subsequent utilization in crystal violet dye removal from water

The release of synthetic microfibers (MFs) into the environment has been correlated to the laundering of clothes due to mechanical and chemical stresses preferably during hand washing based on conventional brushing practices. At this juncture, the present research explores the possible release of MFs in water by brush washing experiments on nylon and polyester clothes using four different quality brushes. The ejection of MFs from fabric as a function of brushing time (1 – 4h), brushing area, quality of brushes and cloth type was investigated. The lengths of MFs were dominated mostly in the range of 100 – 200 μm and 200 – 400 μm along with the presence of microplastics (MPs) as threads, tubules and granules. The fabric materials were characterized using Fourier – Transform Infrared (FTIR) and Scanning Electron Microscope (SEM) with Elemental Dispersive Spectroscopy (EDS) techniques before and after the brush washing experiments. The pyrolysis Gas Chromatography – Time of Flight – Mass Spectroscopic (Py – GC-ToF-MS) study was performed to analyse the pyrolyzate products from the extracted MFs and MPs. Furthermore, the study was further extended into the abatement of MFs/MPs in wastewater samples discharged from the brush washing studies using acid washed tamarind fruit carbon (ATFSC) by columnar technique. The total time of 186h at a flow rate of 1.7ml per minute was spent for treating 19L of wastewater samples with 3480 MFs (WW – 1) and 2858 MFs (WW – 2) as a consequence of brush washing experiments. It was apparent from the microscopic examination that the MFs remain undetectable till 12.24litres of wastewater (1 & 2) samples which passed through the column for 120h. The ATFSC (AT) resulting after the filtration followed by thermal treatment was converted as barium alginate/carbon composites. These composites were found efficient in removing 83% of crystal violet from aqueous solution at pH 7.97 for an equilibrium time of 90min. The corresponding adsorption kinetics revealed the compliance of pseudo – second – order model with respect to domination of chemical forces during sorption. The present research not only explores the elimination of MFs/MPs from wastewater but also the possible conversion in the form of carbon composites followed by application in the removal of crystal violet from water.

Optimum and Green Fabrication of MIL-100(Fe) for Crystal Violet Dye Removal from Aqueous Solution

MIL-100(Fe) was prepared and subsequently used to remove crystal violet dye from aqueous solutions simulating dye-containing wastewater in the environment. In the future, it is aimed that MIL-100(Fe) can be used in managing dye-containing wastewater in the environment and reducing the negative impacts it can cause. Here, MIL-100(Fe) fabrication needs to be optimized to obtain optimum process conditions, which are environmentally friendly and can produce MIL-100(Fe) with the best characteristics. This study focused on optimizing the fabrication of MIL-100(Fe), which is a type of MOF with good chemical stability, thermal stability, and flexible structure. In this study, the room-temperature fabrication of MIL-100(Fe) was established using a ligand-to-metal molar ratio of 0.95 and an acetic acid concentration of 5.1 vol% for 6.2 h. The optimum MIL-100(Fe) was tested for crystal violet removal and provided an optimum removal capacity of 182.66 ± 3.81 mg/g. Statistical approaches are used to investigate the independent parameters and their interactions contributing to MIL-100(Fe) formation.

Synthesis and characterizations of a novel hydrogel for adsorptive removal of crystal violet dye from wastewater

Herein, a novel hydrogel (HG-cl-poly(AA)) was synthesized by grafting acrylic acid (AA) onto Hing gum (HG) using methylene-bis-acrylamide (MBA) as a cross-linker and ammonium persulfate (APS) as an initiator in a hot air oven. The percentage swelling of the hydrogel was examined by optimizing various reaction parameters to ensure its maximum swelling percentage. The formation of crosslinked networks was confirmed using Fourier-Transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and thermogravimetric analysis (TGA) techniques. The surface area and hydrophilicity of the prepared hydrogel were determined using Brunauer–Emmett–Teller analyzer and wettability studies, demonstrating a clear correlation with adsorption. The adsorption of crystal violet (CV) dye on the prepared hydrogel was studied via a batch adsorption system based on the amount of adsorbent, immersion time, pH level, and initial dye concentration. The prepared hydrogel showed a 99% removal rate and an excellent adsorption capacity of 492.61[Formula: see text]mg/g due to the electrostatic, H-bonding, and dipole–dipole interactions between the adsorbent surface and dye molecules. The results were further analyzed using the Langmuir, Freundlich, and Tempkin isotherm models. The study suggests consistency with the pseudo-second-order kinetic model ([Formula: see text]), further supported by the best data fit with the Langmuir isotherm model ([Formula: see text]). The thermodynamic study results indicated that the adsorption process is endothermic and spontaneous. Regeneration (desorption) studies showed that the prepared hydrogel could remove CV dye from an aqueous solution and maintain the highest adsorption capacity even after multiple adsorption and desorption cycles. Therefore, the prepared HG-cl-poly(AA) hydrogel could be a potential adsorbent for dye removal and have an admirable capacity for cleaning the aquatic environment.

Electrochemical removal of crystal violet dye from simulated wastewater by stainless steel rotating cylinder anode: COD reduction and decolorization

Crystal violet dye is a harmful organic pollutant when it exists in wastewater. It may potentially cause renal failure and respiratory issues in humans, while it is considered carcinogenic and mutagenic in aqua life. In this study, crystal violet dye was electrochemically removed from simulated wastewater using a stainless-steel rotating cylinder anode. Effects of anode rotation rate (250–500 rpm), applied current (400–750 mA), concentration of supporting electrolyte (0.3–0.6 M), and time (30–70 min) on chemical oxygen demand (COD) reduction and colour removal were studied. The experimental results were correlated by two quadratic regression models: one for COD reduction with R2 equals to 0.859, and one for colour removal with R2 equals to 0.934. Process optimization was conducted using the response surface methodology (RSM) with a rotatable central composite design CCD. The results showed that the optimum conditions for maximum COD reduction (86.89 %) and maximum colour removal (88 %) are as follows: anode rotation rate = 625 rpm, applied current = 658.568 mA, supporting electrolyte = 0.422 M and treatment time = 90 min. Generally, all the studied factors have a potential effect on the process efficiency.

Simplified synthesis and identification of novel nanostructures consisting of cobalt borate and cobalt oxide for crystal violet dye removal from aquatic environments

Crystal violet dye poses significant health risks to humans, including carcinogenic and mutagenic effects, as well as environmental hazards due to its persistence and toxicity in aquatic ecosystems. This study focuses on the efficient removal of crystal violet dye from aqueous media using novel Co3O4/Co3(BO3)2 nanostructures synthesized via the Pechini sol–gel approach. The nanostructures, which were abbreviated to EN600 and EN800, were fabricated at calcination temperatures of 600 and 800 °C, respectively. X-ray diffraction (XRD) analysis revealed that the synthesized samples have a cubic Co3O4 phase and an orthorhombic Co3(BO3)2 phase, with mean crystal sizes of 43.82 nm and 52.93 nm for EN600 and EN800 samples, respectively. The Brunauer–Emmett–Teller (BET) surface areas of EN600 and EN800 samples were 65.80 and 43.76 m2/g, respectively, indicating a significant surface area available for adsorption. Optimal removal of crystal violet dye was achieved at a temperature of 298 K, a contact time of 70 min, and a pH of 10. The maximum adsorption capacities were found to be 284.09 mg/g for EN600 and 256.41 mg/g for EN800, which are notably higher compared to many conventional adsorbents. The adsorption process followed the pseudo-second-order kinetic model and fitted well with the Langmuir isotherm. The adsorption was exothermic, spontaneous, and physical in nature. Moreover, the adsorbents exhibited excellent reusability, retaining high efficiency after multiple regeneration cycles using 6 mol/L hydrochloric acid. These findings highlight the potential of these Co3O4/Co3(BO3)2 nanostructures as effective and sustainable materials for water purification applications.

Design of a phosphate-based glass system as adsorbent for crystal violet dye removal

This study introduces the utilization of a novel approach using glass-based systems as standalone adsorbents for extracting crystal violet (CV) dye from aqueous solutions. A phosphate-based glass 60NaPO3-10TiO2-30V2O5 was synthesized using the conventional melt quenching technique. Characterization was conducted using a variety of analytical techniques including Fourier transform infrared spectroscopy (FTIR), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), Raman spectra, Thermal Gravimetric Analysis (TGA) and X-ray analysis (XRD). The glass exhibited effective adsorption capacity for CV dye, marking the first-time use of phosphate-based glass as an adsorbent. The findings suggested that the adsorption process was impacted by different physicochemical parameters. The Freundlich isotherm and pseudo-first-order models demonstrated a strong fit in isothermal and kinetic adsorption modeling, respectively. The utmost adsorption capacity observed was 262.74 mg g−1. Thermodynamic analysis suggested that the process of adsorption of CV dye was spontaneous and exothermic. These findings indicate that the synthesized phosphate-based glass has a high potential for wastewater treatment containing CV dye.

Peganum Harmala seeds extract: A green synthesis route for Mn-doped ZnO nanoparticles as an adsorbent for crystal violet dye removal

Peganum Harmala seeds extract: A green synthesis route for Mn-doped ZnO nanoparticles as an adsorbent for crystal violet dye removal

Application of layered Nickel/Indium double hydroxide in the highly efficient removal of crystal violet dye from textile effluent

Worldwide freshwater demand will soon exceed supply if measures are not taken to mitigate inadequate wastewater treatment and its indiscriminate release into the environment. The textile industry is one of the largest consumers of freshwater and the third largest contributor to clean water pollution. Conventional treatment of textile effluent is inadequate and expensive. Adsorbent materials obtained from discarded solid waste precursors that contain high amounts of valuable metals can be an inexpensive way to obtain a highly efficient and low-cost wastewater treatment process. This study developed and explored a highly efficient adsorbent layered double hydroxide of Nickel and Indium (Ni/In-LDH) for the adsorption of widely used textile cationic dye, crystal violet (CV). The adsorbent material was synthesized by co-precipitation process of indium nitrate and nickel nitrate. The adsorbent material morphology and its adsorption capacity were investigated in different studies, such as the influence of pH, dosage, kinetics, isotherms, thermodynamics, ionic strength, adsorbent regeneration capacity, and interaction mechanisms of adsorption. Optimal operating conditions for Ni/In-LDH adsorption revealed maximum adsorption capacity Qmax of 570.94 mg g−1 at starting pH 8 and 60°C, which maintained approximately 75 % of the initial adsorption capacity in three successive adsorption/regeneration cycles. The experimental data fitted Pseudo first order kinetic model (PFO) and the Liu isothermal adsorption model. Thermodynamic studies indicated a spontaneous endothermic adsorption process, and a mechanism of physisorption of CV onto Ni/In-LDH substrate. After FTIR analysis of CV loaded Ni-In/LDH, electrostatic, hydrogen bonding, and n-π bonding interactions were suggested as the interaction mechanisms of adsorption. The Ni/In-LDH demonstrated excellent performance in the removal of CV dye in aqueous solutions compared to other high performing adsorbents.

Adsorption of crystal violet dye with selenium nanoparticles obtained by green synthesis from cherry (Prunus avium L.) fruit stalk

Crystal violet (CV) dye is a water-soluble, toxic, resistant organic dye that is quite dangerous for the ecosystem and causes environmental pollution. This study synthesized selenium nanoparticles (Se NPs) from agricultural Prunus avium L. (PaL.) wastes and removed crystal violet (CV) dye. In batch adsorption tests, the effects of pH, amount of adsorbent, time, initial concentration, and temperature were investigated. In this study, where 3 different kinetic and isotherm models were tested, it was determined that the most suitable kinetic and isotherm models for the removal of CV dye with PaL-Se NPs were Pseudo second order (R2:0.999) and Langmuir (R2:0.997), respectively. Additionally, the maximum adsorption capacity (qmax) was calculated as 142.61 mgCV/g PaL-Se NP. Accordingly, it can be said that low-cost PaL-Se NPs synthesized by environmentally friendly methods are a suitable alternative for the removal of CV dye.

Optimization of Extraction Conditions from Gac Fruit and Utilization of Peel-Derived Biochar for Crystal Violet Dye Removal.

Gac fruit (Momordica cochinchinensis Spreng.) is a prominent source of carotenoids, renowned for its exceptional concentration of these compounds. This study focuses on optimizing the extraction of active components from the aril of gac fruit by evaluating the effects of extraction temperature, solid-liquid ratio, and extraction time. The primary objective is to maximize the yield of gac oil while assessing its antioxidant capacity. To analyze the kinetics of the solid-liquid extraction process, both first-order and second-order kinetic models were employed, with the second-order model providing the best fit for the experimental data. In addition, the potential of gac fruit peel as a precursor for biochar production was investigated through carbonization. The resultant biochars were evaluated for their efficacy in adsorbing crystal violet (CV) dye from aqueous solutions. The adsorption efficiency of the biochars was found to be dependent on the carbonization temperature, with the highest efficiency observed for BCMC550 (91.72%), followed by BCM450 (81.35%), BCMC350 (78.35%), and BCMC250 (54.43%). The adsorption isotherm data conformed well to the Langmuir isotherm model, indicating monolayer adsorption behavior. Moreover, the adsorption kinetics were best described by the pseudo-second-order model. These findings underscore the potential of gac fruit and its byproducts for diverse industrial and environmental applications, highlighting the dual benefits of optimizing gac oil extraction and utilizing the peel for effective dye removal.

Enhancing environmental sustainability: Butea monosperma leaves as a key component in WO3-based composites for water purification and therapeutic applications.

In this research, a novel nano-biocomposite material, namely, tungsten trioxide-Butea monosperma leaf powder (WO3@BLP), is an effective and eco-friendly adsorbent used for the mitigation of congo red (CR) and crystal violet (CV) dyes from its aqueous phase. The as-prepared WO3@BLP was characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), DLS analysis, and TGA. Many factors such as solution pH, WO3@BLP dose, temperature, contact time, and initial CR/CV dye concentrations were exploited to monitor the adsorption efficiency of WO3@BLP composites. The biosorption of both CR and CV dyes followed the Langmuir isotherm, with maximum adsorption capacities (qmax) reaching 84.91 mg g-1 for CR at pH 2.3 and 162.75 mg g-1 for CV at pH 8, fitting of kinetics data to the PSO model with closed values of qeexp (mg g-1) and qecal (mg g-1), i.e., 25.69 to 25.38 mg g-1 for CR dye and 29.06 to 29.08 mg g-1 for CV dye. The interaction mechanism behind the adsorption of CR and CV dyes onto the WO3@BLP bionanocomposite includes electrostatic interaction and surface complexation. The synthesized materials were tested for antifungal activity against three different Candida cells, i.e., C. albicans ATCC 90028, C. glabrata ATCC 90030, and C. tropicalis ATCC 750, by using broth dilution method on the minimum inhibiting concentration (MIC). Furthermore, the cytotoxicity of nano-formulated WO3@BLP was studied by in vitro hemolytic assay on a human host. Overall, this research presents a pioneering nano-biocomposite, WO3@BLP, as a sustainable adsorbent for CR and CV dye removal, adhering to Langmuir isotherm and pseudo-second-order kinetics. Its multifaceted approach includes elucidating interaction mechanisms, demonstrating antifungal activity, and assessing cytotoxicity, marking a significant advancement in environmental remediation.

Green Flocculants from Cactus Cladodes: Physicochemical Characterization and Assessment of Their Flocculating Activity for Crystal Violet Dye Removal

Green Flocculants from Cactus Cladodes: Physicochemical Characterization and Assessment of Their Flocculating Activity for Crystal Violet Dye Removal

Reed straw-based activated carbon produced via microwave method-assisted-ZnCl2 for the removal of crystal violet dye: multivariate modeling and optimization

Reed straw-based activated carbon produced via microwave method-assisted-ZnCl2 for the removal of crystal violet dye: multivariate modeling and optimization

Efficient removal of crystal violet dye from water using zinc ferrite-polyaniline nanocomposites.

Nanomaterials are widely employed in wastewater treatment, among which nanoferrites and their composites hold significant prominence. This study adopts a green approach to synthesize zinc ferrite nanoparticles, subsequently integrating them with polyaniline (PANI) to fabricate the ZnFe2O4-PANI nanocomposite. Characterization of the prepared ZnFe2O4-PANI nanocomposite was conducted using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopic (SEM) techniques. Using Scherrer's equation, the crystallite size of the synthesized zinc ferrite nanoparticles was found to be 17.67nm. SEM micrographs of the ZnFe2O4-PANI nanocomposite revealed that in situ polymerization of ZnFe2O4 with polyaniline transforms the amorphous surface morphology of the polymer into a homogeneous nanoparticle structure. The adsorption of crystal violet (CV) dye onto the surface of the ZnFe2O4-PANI nanocomposite depends on pH, adsorbent dosage, temperature, concentration levels and duration. The Langmuir adsorption model fitted the data well, indicating adherence to a pseudo-second-order kinetic pattern. Thermodynamic values ΔG°, ΔH° and ΔS° indicated that the adsorption process occurred spontaneously. Advantages and disadvantages of the technique have also been highlighted. Mechanism of adsorption is discussed. From the obtained results, it is evident that the ZnFe2O4-PANI nanocomposite holds promise as a sorbent for the removal of dye from wastewater.

Green synthesis of silver nanoparticles decorated on graphene oxide for crystal violet dye removal

In this study, we demonstrate a facile and environmentally benign method for the synthesis of Ag nanoparticles using a green reducing agent and their subsequent deposition onto GO sheets. The synthesized GO@Ag nanocomposite was characterized using various analytical techniques such as FTIR, XRD, FESEM, EDX and BET. The results confirmed the successful formation of cubic Ag nanoparticles with diameter 30–40 nm on the GO surface. The theoretical surface area of GO@Ag was found to be 89 m2/g. The adsorption efficiency of GO@Ag nanocomposite toward CV dye was evaluated through batch adsorption experiments. The above experimental results revealed that CV adsorption on to the GO@Ag surface was pH dependent and maximum adsorption capacity was found to be 48.78 mg/g at pH = 8. The adsorption process followed pseudo-second-order kinetics and Langmuir isotherm models, indicating monolayer adsorption with chemisorption as the rate-limiting step. Furthermore, the recyclability and stability of the nanocomposite were assessed through multiple adsorption-desorption cycles, demonstrating its potential for practical applications in wastewater treatment for the removal of cationic dyes. The mechanism of CV adsorption on to the GO@Ag surface mainly involves electrostatic attraction and π-π interaction.

Cassava starch modified montmorillonite - an efficient material for removal of crystal violet dye from contaminated aqueous solution

Because of grave effects on human health and the ecosystem, dye wastewater is exigent to be treated before its access to the environment. Removal of dyes from wastewater is one of the most important steps to eliminate its harmfulness. In this study, montmorillonite (MMT), a clay mineral with numerous applications in catalytic and coating purposes, was modified to form a new adsorbent for the removal of crystal violet (CV) dye from contaminated aqueous solution. Vietnamese cassava starch which is biodegradable, renewable, sustainable and affordable, was used as a modifier for MMT. The modified MMT was characterized by Fourier-transformed infrared (FT-IR) and X-ray diffraction (XRD) spectroscopic methods. Its morphology and structure were observed by Scanning electron microscopy (SEM). In addition, the effects of pH, interaction time, adsorbent concentration and temperature on the physico-chemical adsorption process on the basis surface of the material, have been investigated. Langmuir and Freundlich models were applied to analyze the adsorption values of dye solutions at the time of equilibrium. The results indicated that the modified MMT possessed the spherical shape, with particles on the surface in a wide size range. Investigation on the ideal removal conditions for modified MMT showed that it removed the crystal violet dye with maximum adsorption at pH value of 7 and concentration of 101.1 mg/g after 1 hour of interaction. Moreover, the Langmuir adsorption isotherm model was compatible with all results and the adsorption kinetics followed the pseudo-second-order model. Starch modified MMT should be promising for dye removal from wastewater.

Co-carbonization of hazelnut shell and lemna minor: its effectiveness in adsorption of crystal violet from an aqueous solution

ABSTRACT Co-carbonization of waste biomass is of great interest to reduce production costs and increase carbon yields. In this study, it was investigated to produce cost-effective and high carbon yield activated carbons by carbonizing lemna minor (LM) and hazelnut shell (HS) wastes together. In this context, LM and HS were co-carbonized at 800°C, 100 mL/min of N2 for 90 min, and their carbonization yields, adsorption capacities, physical and chemical properties were determined. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), ultimate and proximate analysis were performed. According to XRD analysis, HS is amorphous, LM is semi-crystalline, but the crystalline structure increased after co-carbonization. Based on the FTIR analysis LM, HS, and cLM/HS contain various functional groups, including O-H, C-H, and C-O. The adsorption capacity and CV removal, obtained by co-carbonized LM and HS (cLM/HS), are 87.95 mg/g and 88%, respectively. Its specific surface area is 745 m2/g. This study showed that the cLM/HS is a cost-effective adsorbent for the removal of crystal violet dye.

Recycled gold-reduced graphene oxide nanocomposite for efficient adsorption and photocatalytic degradation of crystal violet

In this study, gold-reduced graphene oxide (Au@rGO) nanocomposite has been synthesized by repurposing electronic waste and dry batteries. This innovative approach involved utilizing the graphite rod from dry batteries to produce reduced graphene oxide (rGO), which was subsequently modified through the incorporation of gold nanoparticles obtained from recycled electronic waste. This methodology marks a significant breakthrough in electronic waste recycling, presenting a cost-effective and sustainable means of creating novel nanocomposites for applications in photocatalysis and adsorption, particularly in the removal of crystal violet (CV) from aqueous media. The synthesized Au@rGO nanocomposite was characterized using X-ray diffraction, scanning electron microscopy, energy dispersed X-ray, and N2 adsorption/desorption. Parameters that affect the adsorption and photocatalytic degradation of CV dye have been studied in detail. The optimal conditions for CV adsorption and photocatalytic degradation were pH of 10, equilibrium time of 30 min, CV concentration of 10 mg/L and adsorbent dosage of 40 mg. Furthermore, the isotherm and kinetics of CV removal were also studied. The removal of CV dye using adsorption and photocatalytic degradation techniques reached 95% and 99%, respectively. Consequently, the results showed that photocatalytic degradation of CV dye onto the mesoporous Au@rGO nanocomposite is more proper way than the adsorption technique for removing the CV dye from aqueous media. The designed photocatalyst has high efficiency and it can be reused and activated several times so it can be used in real water treatment applications.

Removal of Crystal Violet Dye from Aqueous Solutions through Adsorption onto Activated Carbon Fabrics

The removal of contaminants from aqueous solutions by adsorption onto carbonaceous materials has attracted increasing interest in recent years. In this study, pristine and oxidized activated carbon (AC) fabrics with different surface textures and porosity characteristics were used for the removal of crystal violet (CV) dye from aqueous solutions. Batch adsorption experiments were performed to investigate the CV adsorption performance of the AC fabrics in terms of contact time, temperature, adsorbate concentration and adsorbent amount. Evaluation of the thermodynamic parameters and the adsorption performance of the AC fabrics in ground water and sea water solutions were also carried out. Langmuir isotherm model, pseudo first and pseudo second order kinetics models were utilized to analyze and fit the adsorption data. The introduction of oxygen-based functional groups on the surface of AC fabrics was carried out through a nitric acid treatment. This oxidation process resulted in a significant reduction in the surface area and pore volume, along with a small increase in the average pore size and a significant enhancement in the CV adsorption capacity, indicating that the dye molecules are mainly adsorbed on the external surface of the carbon fabrics. The herein evaluated 428 mg/g adsorption capacity at 55 °C for the oxidized non-woven AC fabric is one of the highest adsorption capacity values reported in the literature for CV removal using AC materials. Thermodynamic studies showed that the adsorption occurs spontaneously and is an endothermic and entropy-driven reaction. Furthermore, pristine and oxidized non-woven AC fabrics displayed more than 90% CV uptake from sea water samples, underlining the great potential these fabrics possess for the removal of dyes from natural/multicomponent waters.