Probing inhibition effect of novel biopolymer based composite for the inhibition of P110 steel corrosion in 15% HCl under dynamic condition

The present work shows the chitosan composite development using Salicylaldehyde (Sali-Cht). The developed composite was used as P110 steel corrosion inhibitor in 15% HCl under dynamic condition at 1500 rpm using electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM), and potentiodynamic polarization (PDP). The EIS results disclosed that Sali-Cht inhibits corrosion via charge transfer process. The PDP data indicated that Sali-Cht suppresses both the cathodic and anodic corrosion process. The maximum inhibition efficiency of Sali-Cht is 89.23% (400 mg/L). The adsorption of Sali-Cht over the steel surface was confirmed using X-ray photoelectron spectroscopy (XPS). Morphological changes on the steel surface were monitored by scanning electron microscopy (SEM). The thermodynamic parameters such as the adsorption equilibrium constant (K_ads) and the free energy of adsorption (ΔG_ads) were calculated and discussed. Several adsorption isotherms were tested and the experimental data fitted well with the Langmuir adsorption isotherm. Density functional theory (DFT) suggests that protonated forms of Sali-Cht have more adsorption ability than neutral forms. Molecular dynamic simulation (MD) study revealed that protonated form adsorbed flatly over the P110 steel surface, while neutral form adsorbed in a twisted manner.     

Corrosion inhibition of mild steel in 1M HCl using environmentally benign Thevetia peruviana flower extracts

The corrosion inhibition of Thevetia peruviana (Kaner) flower extract (TPFE) is evaluated for mild steel in 1M HCl solution using electrochemical, surface and computational demonstrations. Results showed that TPFE acted as a potential corrosion inhibitor and shows the highest inhibition efficiency of 91.24% at 200 mg/L concentration. Electrochemical studies suggest that TPFE acted as a mixed- and interface-type of corrosion inhibitor. The TPFE inhibits metallic corrosion through an adsorption mechanism that follows Temkin adsorption isotherm model. Adsorption mechanism of corrosion inhibition was further supported using AFM, SEM-EDX, FT-IR and UV–visible surface studies. Furthermore, the anticorrosive mechanism of major phytochemicals of the TPFE was studied using computational techniques: Density Functional Theory (DFT) and Molecular Dynamics (MD) simulations. Results showed that TPFE interacts with donor-acceptor interactions and its phytochemicals acquire the flat or horizontal orientations over the metallic surface.     

Electrochemical and surface studies on chemically modified glucose derivatives as environmentally benign corrosion inhibitors

Three glucose derivatives, namely Ethylenediamine-modified glucose, Tetramethylenediamine-modified glucose, and Hexamethylenediamine-modified glucose with three different carbon chain lengths were synthesized using environmentally benign and low-cost reactants at ambient temperature. The synthesized derivatives were evaluated as inhibitors for mild steel corrosion in 1 M HCl using electrochemical, surface analysis (XPS, AFM and contact angle), as well as computational (DFT) techniques. The obtained results suggest that the synthesized glucose derivatives significantly mitigate the corrosion of mild steel and show a rise in the inhibition efficiency with increasing inhibitor dosage. The inhibitor adsorption obeyed the Langmuir isotherm. The XPS analyses provided an elucidation on the interaction of the inhibitors with the steel substrate. The DFT studies showed that the protonated forms of the inhibitors act more prominently compared to the neutral form. The inhibitor HMG having the alkyl chain with six carbon atoms exhibited the highest inhibition performance of >95% at 22.71 × 10^?5 mol L^?1.     

Almond waste extract as an efficient organic compound for corrosion inhibition of carbon steel (C38) in HCl solution

In this study, the corrosion inhibition efficiency of almond waste extract on carbon steel (C38) in 1.0 M HCl solution was evaluated using gravimetric analyses, electrochemical tests, and surface characterization. Electrochemical results suggest that almond waste extract significantly enhances the corrosion resistance of C38. To control and understand the stability and adsorption ability of the inhibitor on the steel surface, C38 was tested for various concentrations and temperatures without and with extract inhibitor. The results show that the almond waste exhibits an out-standing inhibition performance in the different experimental conditions. Extract of almond waste acted as a mixed type inhibitor and the adsorption of the corrosion inhibition of C38 was evaluated by Langmuir isotherm model. Adsorption thermodynamic parameters were computed and interpreted. FT-IR analysis and surface morphology affirmed the formation of protective film on C38 surface. The results obtained from experiments revealed that the almond waste extract has a considerable ability to adsorb on C38 surface with high stability of corrosion inhibition at all concentrations were studied here, particularly at high temperatures.     

Pterocarpus santalinoides leaves extract as a sustainable and potent inhibitor for low carbon steel in a simulated pickling medium

The crude extract of Pterocarpus santalinoides leaves (PSLE) extracted using water, ethanol, and methanol as the extraction solvent has been studied as inhibitor for low carbon steel in 1 moL/dm³ HCl solution using electrochemical approaches at 25 °C and 60 °C. The results obtained reveal that, PSLE extract has the capacity to effectively suppress the dissolution of the studied substrate. The inhibition performance of PSLE is a function of concentration, temperature, and extraction solvent. Corrosion inhibition is in the order: ethanolic extract > methanolic extract > aqueous extract. With 0.7 g/L PSLE, inhibition efficiency of >90% has been obtained at 60 °C. Based on calculated values of adsorption parameters and UV–vis results, it is proposed that PSLE molecules chemically interacted with the substrate surface. PSLE extract suppressed both the rate of cathodic and anodic reactions according to the PDP results. However, aqueous PSLE extract inhibited anodic corrosion reactions predominantly while ethanolic and methanolic extracts mainly inhibited the cathodic corrosion reactions. Surface characterization studies via SEM, EDAX, and AFM provide experimental evidence to the claim of interaction and presence of PSLE molecules on the studied substrate surface.     

Adsorptive removal of Cd (II) using oil palm empty fruit bunch-based charcoal/chitosan-EDTA film composite

Oil palm empty fruit bunch (OPEFB) is a solid waste abundantly produced by the palm oil industry. This study aimed to prepare a film adsorbent from OPEFB-based charcoal (OC), embedded into chitosan-ethylenediaminetetraacetic acid (EDTA) matrix (OC/Chi-EDTA) through a simple phase inversion technique for Cd (II) removal. Based on the tensile strength (20.4 kgf/mm²) and adsorption capacity (66.6 mg/g), the material with 0.85 : 0.1: 0.15 was selected as the best film adsorbent using simple additive weighting. Further, the sample was characterized for its functional group, morphology, crystallinity, and thermal behavior. The characterizations revealed the successful preparation of OC/Chi-EDTA with advantageous properties for Cd (II) adsorptive removal such as rough surface morphology and amorphous structure (crystallinity = 41.02). Good thermal stability of OC/Chi-EDTA was also suggested by the T_peak of the first composite degradation at 298.97°C. At equilibrium, the adsorption isotherm best fitted with the Langmuir isotherm model (R² = 0.992; root-mean-square error = 2.75), where the maximum adsorption capacity was 283.33 mg/g. Investigation on the adsorption mechanisms found that electrostatic attraction and complexation were responsible for the Cd (II) uptake. At the optimum conditions (contact time = 120 min; pH 7), the adsorption capacity was recorded to be 67.2 mg/g with a removal efficiency of 99.56%. Regeneration studies suggested that OC/Chi-EDTA can be used up to four cycles (removal efficiency > 75%). In conclusion, the OC has been successfully embedded into chitosan-EDTA matrix resulting in a film adsorbent that could perform a high Cd (II) uptake.     

Thiocarbohydrazide-crosslinked chitosan as a bioinspired corrosion inhibitor for protection of stainless steel in 3.5% NaCl

A facile single-step synthesis was performed to cross-link chitosan with thiocarbohydrazide to yield thiocarbohydrazide-chitosan (TC-Cht) which was for the first time evaluated as an inhibitor for corrosion of stainless steel in 3.5% NaCl solution. A comprehensive electrochemical analysis employing electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), and cyclic voltammetry (CV) was undertaken and showed that the TC-Cht acts by adsorption on the steel surface and exhibits mixed type behavior with predominantly cathodic nature. The adsorption of TC-Cht molecules on the surface of stainless steel followed the Langmuir isotherm. The TC-Cht showed a high inhibition efficiency of >94% at 500 mg L^?1 concentration. Surface investigation using SEM and EDX supported the inhibitor adsorption on the steel surface.     

Insight into the anti–corrosion performance of Artemisia argyi leaves extract as eco–friendly corrosion inhibitor for carbon steel in HCl medium

At present, an important goal in the field of corrosion is to develop effective and environment–friendly corrosion inhibitors. Newly developed corrosion inhibitors can be used to substitute conventional corrosion inhibitors, which are toxic and undegradable. Herein, Artemisia argyi leaves extract (ALE) as high–efficiency corrosion inhibitor of carbon steel in HCl solution was investigated. The functional groups of ALE were characterized by Fourier transform infrared spectroscopy (FTIR). Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve (Tafel), scanning electron microscopy (SEM), quantum chemical (QC) calculations, and molecular dynamics simulation (MDS) were used to examine the inhibitory performance and mechanism of ALE. The findings indicate that ALE is a good mixed–type corrosion inhibitor. It can be used to slow down the corrosion of carbon steel in HCl, with a maximum inhibition efficiency of 96.4% at 298 K. In addition, the Langmuir adsorption model is used to explain the adsorption of this corrosion inhibitor on carbon steel surfaces. Furthermore, the corrosion inhibition mechanism of ALE can be proved by quantum calculation results and molecular dynamics simulations.     

Experimental and theoretical studies of Ficus religiosa as green corrosion inhibitor for mild steel in 0.5 M H2SO4 solution

Corrosion inhibition analysis and adsorption behaviour of Ficus religiosa fruits extract for mild steel in 0.5 M H₂SO₄ solution has been inquired utilizing scanning electron microscopy (SEM), atomic force microscopy (AFM), gravimetric measurements, electrochemical impendence spectroscopy (EIS), potentiodynamic polarization techniques, Ultraviolet-visible spectroscopy (UV–vis.), Fourier-transform infrared spectroscopy (FT-IR) and quantum chemical calculations. Electrochemical investigation and gravimetric estimations say that the fruits extract of Ficus religiosa shows the most extreme inhibition efficiency of 92.26% at 500 mg/L. The appearance of Myricetin, Serotonin and Campesterol as major phytochemical constituents in the extract of Ficus religiosa, decrease the corrosion rate of mild steel in acidic media. The adsorption of this extract obeys the Langmuir adsorption isotherm. Due to the presence of heteroatoms and aromatic rings in the major components of Ficus religiosa, it can serve as an effective corrosion inhibitor for mild steel corrosion in 0.5 M H₂SO₄.     

Water Sorption Induced Transformations in Crystalline Solid Surfaces: Characterization by Atomic Force Microscopy

The effect of water sorption on the mobility of molecules on the surface of a crystalline anhydrous solid was investigated to understand the mechanism of its transformation to the corresponding hydrate. Theophylline was chosen as the model compound. The transition water activity for anhydrate to hydrate transformation, RH_T, and the deliquescence RH, RH₀, was determined to be 62% and 99%, respectively (25°C). Atomic force microscopy (AFM) was used to study the surface changes of theophylline above and below the transition water activity. Contact-mode AFM showed that the jump-to-contact distance increased appreciably above RH_T, suggesting formation of solution on the surface. At RH_T < RH < RH₀, using dynamic (AC/“tapping” mode) AFM, the movements of surface steps were visualized. These results from AFM indicated that, below RH₀, the formation of a thin solution film significantly increased surface mobility. Furthermore, when the anhydrate crystal surface was seeded with the hydrate, the propagation of a new hydrate phase was observed by polarized light microscopy. In conclusion, atomic force microscopy provided direct evidence that the phase transformation of anhydrous theophylline to theophylline monohydrate in the solid-state is mediated by a surface solution as a result of water adsorption. © 2010 Wiley-Liss, Inc. and the American Pharmacists Association J Pharm Sci 99:4032–4041, 2010     

Evaluation of the corrosion inhibition effect of the combined admixture of rosemary and cinnamon cassia oil on mild steel in weak acid electrolyte

The corrosion resistance of mild steel (MS) in 0.5 M H₂SO₄ and HCl solution with specific concentrations of the intermixture of rosemary and cinanamon cassia essential oil extracts (RCC) was studied by potentiodynamic polarization method, open circuit potential analysis (OCP) and optical macroscopy. Information obtained showed RCC effectively inhibited MS corrosion from the lowest to the highest concentrations in both acids with lowest inhibition result of 95.30% and 94.19%, and highest inhibition efficiency of 99.21% and 97.69%. RCC exhibited dominant cathodic inhibition effect in H₂SO₄ due to suppression of the reduction reactions while in HCl RCC displayed mixed inhibition properties due to surface coverage effect in the presence of Cl^? anions. OCP showed RCC increased the thermodynamic tendency of MS to corrosion in H₂SO₄ solution despite effective inhibition performance with significant electronegative shift in corrosion potential. In HCl significant electropositive potential displacement was observed relative to the potential of the control MS due to adsorbed protonated RCC molecules unto the steel. Adsorption of RCC molecules on MS aligned with Langmuir, Frumkin and Freundlich isotherm models through chemisorption mechanism in both acids with average correlation coefficient value above 0.9. Optical images of MS in both acids without RCC showed severe surface degradation with the degree of degradation being higher from H₂SO₄ solution. Optical images from RCC inhibited steel depict effective surface protection.     

A newly synthesized green corrosion inhibitor imidazoline derivative for carbon steel in 7.5% NH4Cl solution

Corrosion and corrosion inhibition behaviors of steel Q-235 were studied in 7.5% NH₄Cl solution with the newly synthesized inhibitor by potentiodynamic polarization together with tests of electrochemical impedance spectroscopy and weight loss measurements in 298–338 K temperature range. The new inhibitor 2-(2-heptadecyl-4, 5-dihydro-1H-imidazole-1-yl) ethanol (HDIE) is synthesized with the help of microwave radiations in solvent free conditions. The results showed that inhibition efficiency above 90% is achievable at 298 K with 0.5 mML^?1 inhibitor concentration. The Adsorption studies revealed that HDIE follows Langmuir model and its adsorption mechanism was mixed-type with predominant effect on anodic half cell. It was seen from the EDS characterization of corroded steel surfaces that the HDIE retarded the corrosion by impeding the chloride attack. Quantum chemical calculations demonstrated that the imidazoline ring and hetero-atoms were active sites. Moreover, an inhibition mechanism was proposed on the basis of the quantum chemical calculations and experimental corrosion studies.     

Application of pharmacokinetic/pharmacodynamic modelling and simulation for the prediction of target attainment of ceftobiprole against meticillin-resistant Staphylococcus aureus using minimum inhibitory concentration and time–kill curve based approaches

The purpose of this report was to compare two different methods for dose optimisation of antimicrobials. The probability of target attainment (PTA) was calculated using Monte Carlo simulation to predict the PK/PD target of fT_>MIC or modelling and simulation of time–kill curve data. Ceftobiprole, the paradigm compound, activity against two MRSA strains was determined, ATCC 33591 (MIC = 2 mg/L) and a clinical isolate (MIC = 1 mg/L). A two-subpopulation model accounting for drug degradation during the experiment adequately fit the time–kill curve data (concentration range 0.25–16× MIC). The PTA was calculated for plasma, skeletal muscle and subcutaneous adipose tissue based on data from a microdialysis study in healthy volunteers. A two-compartment model with distribution factors to account for differences between free serum and tissue interstitial space fluid concentration appropriately fit the pharmacokinetic data. Pharmacodynamic endpoints of fT_>MIC of 30% or 40% and 1- or 2-log kill were used. The PTA was >90% in all tissues based on the PK/PD endpoint of fT_>MIC >40%. The PTAs based on a 1- or 2-log kill from the time–kill experiments were lower than those calculated based on fT_>MIC. The PTA of a 1-log kill was >90% for both MRSA isolates for plasma and skeletal muscle but was slightly below 90% for subcutaneous adipose tissue (both isolates ca. 88%). The results support a dosing regimen of 500 mg three times daily as a 2-h intravenous infusion. This dose should be confirmed as additional pharmacokinetic data from various patient populations become available.     

Effect of antacid magaldrate oral suspension on in-vitro and in-vivo availability of indomethacin in dogs

The adsorption of indomethacin onto Riopan and Rioplus (Magaldrate antacid oral suspension U.S.P.) was determined at 37 °C in phosphate buffer pH 7.4 and in simulated intestinal fluid U.S.P. pH 7.5. The effect of 20 ml of Riopan, given 1 h after oral administration of Indocid capsules (MSD, 25 mg) to fed dogs, on the bioavailability of indomethacin was also studied. The in-vitro study showed that the logarithm of amount of indomethacin adsorbed was linearly related to the logarithm of free drug concentration in conformity to Freundlich adsorption isotherm. The adsorptive capacities followed the sequence: Riopan (intestinal fluid) = Rioplus(intestinal fluid)>Riopan(phosphate buffer) = Rioplus (phosphate buffer). In all cases the adsorbed drug was eluted almost completely by washing with different volumes of different elution media indicating competitive physical adsorption via weak Van der Waal's attractive forces. The in-vivo study showed that the oral administration of Riopan 1 h after administration of Indocid capsules to fed dogs resulted in a significant (p < 0.05) reduction in plasma concentrations of indomethacin, a non-significant (p > 0.05) change in C_max, significantly (p < 0.05) shorter T_max and significantly reduced AUC where it decreased from 15.06 ± 5.65 to 9.52 ± 3.69 μg h/ml resulted in a relative bioavailability of 63.21% after Riopan administration.     

Beta-lactam target attainment and associated outcomes in patients with bloodstream infections

ObjectivesTo evaluate the association between early and cumulative beta-lactam pharmacokinetic/pharmacodynamic (PK/PD) parameters and therapy outcomes in bloodstream infection (BSI).MethodsAdult patients who received cefepime, meropenem, or piperacillin/tazobactam for BSI and had concentrations measured were included. Beta-lactam exposure was generated and the time that free concentration remained above the minimum inhibitory concentration (fT_>MIC) and four multiples of MIC (fT_>4 × MIC) were calculated for times 0-24 h and 0-7 days of therapy. Multiple regression analysis was performed to evaluate the impact of PK/PD on microbiological and clinical outcomes.ResultsA total of 204 patients and 213 BSI episodes were included. The mean age was 58 years and weight 83 kg. Age, Sequential Organ Failure Assessment (SOFA) score, haemodialysis, Pitt bacteraemia score, and hours of empiric antibiotic therapy were significantly associated with certain outcomes and retained in the final model. In multiple regression analysis, fT_>4 × MIC at 0-24 h and 0-7 days was a significant predictor of negative blood culture on day 7 (P=0.0161 and 0.0068, respectively). In the time-to-event analysis, patients who achieved 100% fT_>4 × MIC at 0-24 h and 0-7 days had a shorter time to negative blood culture compared with those who did not (log-rank P=0.0004 and 0.0014, respectively). No significant associations were identified between PK/PD parameters and other outcomes, including improvement in symptoms at day 7 and 30-day mortality.ConclusionEarly and cumulative achievement of fT_>4 × MIC was a significant predictor of microbiological outcome in patients with BSI.     

Retrieve of residual waste of carbon dots derived from straw mushroom as a hydrochar for the removal of organic dyes from aqueous solutions

The residual waste during the separation of carbon dots (C-dots) solution derived from natural resources was usually discarded without further use. In this study, the simultaneous production of C-dots and hydrochar (HC) from straw mushroom through hydrothermal carbonization treatment was carried out to increase the utilities of sustainable resources. The obtained C-dots exhibited good physicochemical and optical properties. The residual waste was retrieved as the HC for the removal of organic dyes. The HC had the BET surface of 11.68 m²/g with an average pore size and pore volume of 15.42 nm and 0.045 m³/g, respectively. The HC showed excellent removal efficiencies for crystal violet (CV) and methylene blue (MB) from aqueous solutions of more than 90%. Under Langmuir's isotherm, the maximum adsorption capacity (q_max) of the HC was 1.88 mg/g and 3.11 mg/g for MB and CV, respectively. The adsorption capacities at time (q_t) of MB and CV were in the range of 1.85–1.94 mg/g and 2.46–2.65 mg/g, respectively. The equilibrium stage happened above 30 min with a mixing time of 2 min. The HC could completely adsorb 2.5 × 10¹⁶ molecules of 25 μM MB and 3.0 × 10¹⁶ molecules of 50 μM CV. The original colors of MB and CV were almost completely removed after introducing the HC to the dye solutions, which demonstrates the possibility of overcoming the environmental pollution problems by sustainably residual waste materials.     

An alternative application for reuse of leaching residues: Determination of adsorption behaviour for methylene blue and process optimization

In this study, the potential efficiency in adsorption process, as a functional use route, of laterite ore residues (LR) produced from atmospheric acid leaching was evaluated for methylene blue (MB) removal representing cationic organic pollutants discharged in large amounts from industry into aquatic environment. Adsorption process was optimized by using Box-Behnken design based on Response Surface Methodology (RSM) to determine correlation between responses as, adsorption efficiency (%) and adsorption capacity (mg/g), and 3 independent variables with 3 levels (pH, initial MB concentration and LR amount). 98.29 ± 0.63% of adsorption efficiency and 3.072 ± 0.280 mg/g of adsorption capacity were achieved in determined optimum conditions; pH = 5.2, C₀ = 50 mg/L MB and m = 0.40 g. The good agreement between predicted and experimental values observed by comparison of values showed accuracy of model at 95% confidence level. Furthermore, it was determined that nature of adsorption equilibrium complied Freundlich isotherm model and adsorption mechanism was well defined with pseudo-second-order kinetics model. Thus, process exhibited a heterogeneous multilayer adsorption behavior and mainly controlled by chemical reactions. Furthermore, the adsorption mechanism was determined by characterization of residues, before and after adsorption by scanning electron microscopy with energy dispersive of X-ray (SEM?EDAX), Fourier-transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD).     

Preparation and characterization of a novel functionalized agricultural waste-based adsorbent for Cu2+ removal: Evaluation of adsorption performance using response surface methodology

In this study, it was aimed to the improvement of adsorption capability with a novel modification method based on increasing surface activity of flaxseed waste (FW), an agricultural waste product, and the investigation of its usability as an effective adsorbent for Cu²⁺ removal. The modification method involves functionalization of FW with iron by adding FeCl₃ to medium in presence of N, N-Dimethyl-formamide, poly (N-vinyl-pyrrolidone), and hexamethylenetetramine. The effect of parameters was investigated by conventional univariate analysis. In addition, Response Surface Methodology (RSM) based on multivariate analysis was used to improve the performance of Cu²⁺ adsorption onto iron-modified flaxseed waste (M ? FW). Cu²⁺ removal efficiency was achieved as 91.46% ± 2.34 (N = 2) at an equilibrium time of only 15 min under determined optimum conditions as Co: 75 ppm, pH: 4.7, and m: 0.23 g. RSM was successfully applied for the prediction of adsorption. Adsorption nature was as a single-layer adsorption with a maximum adsorption capacity (Q_max) of 7.64 mg/g. The adsorption mechanism, determined to be chemically controlled, an exothermic and non-spontaneous process. Furthermore, pH-dependent adsorption showed that electrostatic interactions between M ? FW and Cu²⁺ ions play an important role in adsorption mechanism. The results of characterization studies showed that a large surface area was provided with increased porosity of structure and desired changes occurred in target functional structures with modification. Moreover, modification and reusability of M ? FW were evaluated in terms of overall sustainability and waste management. The results indicated that M ? FW has potential for usability to remove heavy metals like Cu²⁺ in environmental remediation applications.     

EDTA functionalised cocoa pod carbon encapsulated SPIONs via green synthesis route to ameliorate textile dyes - Kinetics,isotherms, central composite design and artificial neural network

Even though adsorption by nanomaterial adsorbents epitomises an emergent technique to ameliorate the dye pollutants in the aqueous medium, the facile agglomeration and low recovery have circumscribed such potential applications. The present study exposes the furtherance in water treatment technology which embodies the advancement of the economic, photogenic, and eco-friendly nanohybrid composite. This study investigates the synthesis and characterisation of novel magnetic iron oxide nanoparticles loaded with cocoa pod carbon composite (Fe₃O₄/CC) for dye removal. The magnetic cocoa pod carbon composite was modified using EDTA through low cost biogenic green synthesis route and their application for adsorption of methylene blue and crystal violet. The characterisations of both Fe₃O₄/CC and EDTA- Fe₃O₄/CC were carried out using XRD, FTIR, FESEM, EDX, VSM, TGA and TEM. The adsorption studies of methylene blue and crystal violet were studied in batch mode experiments. The influence of operating parameters on dye adsorption efficacy was evaluated by performing the central composite design followed by modelling using artificial neural network. The experimental colour removal was found to match with the prediction value obtained by utilising response surface methodology with an artificial neural network (RSM-ANN) model, respectively. The maximum adsorption capacity of EDTA functionalised composite for methylene blue and crystal violet was 147.43 mg/g and 162.25 mg/g respectively. To understand dye mechanism involved in dye adsorption, isotherms and kinetic studies were carried out which proved that adsorption follows Freundlich isotherm and Pseudo-second order. The adsorbent demonstrated high regeneration, and recoverability studies showed that EDTA functionalised Fe₃O₄/CC is an efficient adsorbent for both cationic textile dyes. The efficient capturing of dye pollutant with the minimum usage of biocompatible adsorbent presents a simple and cost-effective technique for water treatment.