Organoclay Research Articles

Adsorption of Uranium (VI) From Aqueous Solution Using Melamine Formaldehyde Organo Clay Nanocomposite Foam as a Novel Adsorbent

Uranium is a toxic radioactive element and is usually found in the environment in hexavalent form. It has become necessary to remove uranium, which can be released into the environment in excessive amounts through nuclear industrial activities, from access waters. Melamine formaldehyde/organo clay nano composite foam (MFCNCF) was prepared as a novel adsorbent by hardening with thermal treatment. Structural, crystallographic textural and surface morphological characterization of the prepared adsorbent was made by Fourier transform infrared spectrophotometry (FTIR), X-Ray diffraction (XRD), Scanning electron microscopy (SEM) and High-resolution transmission electron microscopy (HRTEM) analyses. This study aimed to investigate the adsorption of U(VI) from aqueous solutions by MFCNCF and its dependence on various variables, such as initial uranium concentration, adsorption time, adsorbent dosage, initial pH, and temperature. Additionally, its adsorption isotherm analysis and adsorption kinetics and thermodynamics were also examined. For this purpose, batch adsorption experiments were carried out and the equilibrium concentration of U(VI) in the aqueous solution was measured with a UV-Vis spectrophotometer at a wavelength of 433 nm, which corresponds to its maximum absorptivity. The results regarding adsorption kinetics showed that 30 min was sufficient to reach adsorption equilibrium and the data showed a high fit to the pseudo-second-order kinetic model. Isotherm analysis also revealed a high fit of the data to the Type III isotherm and the Halsey model. Based on these fits, an adsorption mechanism involving two regions (electrostatic and complex formation) is proposed for the current adsorption system. The adsorption isosteric enthalpy and entropy values for the first and second regions were found to be −5.35 and 2.02 kJ/mol and −16.98 and 6.40 J/mol, respectively. The experimental results showed that the prepared nanocomposite foam adsorbent is an effective and potential alternative for the effective removal of U(VI) from aqueous solutions.

Preparation of Melamine Urea Formaldehyde Organo Clay Nanocomposite Foams Using Thermal Processing and Microwave Irradiation Techniques and Investigation of Their Thermal Insulation and Compressive Strength

Preparation of Melamine Urea Formaldehyde Organo Clay Nanocomposite Foams Using Thermal Processing and Microwave Irradiation Techniques and Investigation of Their Thermal Insulation and Compressive Strength

Investigating the efficacy of novel organoclay as a rheological additive for enhancing the performance of oil-based drilling fluids

Oil-based drilling fluids (OBDFs) are extensively used in the drilling industry due to their superior performance in challenging drilling conditions. These fluids control wellbore stability, lubricate the drill bit, and transport drill cuttings to the surface. One important component of oil-based drilling fluids is the viscosifier, which provides rheological properties to enhance drilling operations. This study evaluates the effectiveness of Claytone-IMG 400, a novel rheological agent, in enhancing the performance of OBDFs under high-pressure and high-temperature (HPHT) conditions. A comparative analysis was conducted with a pre-existing organoclay (OC) to assess the improvements achieved by Claytone-IMG 400. The OCs were analyzed using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and particle size distribution (PSD) to identify their mineral and chemical compositions, morphologies, and particle sizes. The drilling fluid density, electrical stability, sagging tendency, rheological properties, viscoelastic properties, and filtration properties were studied to formulate a stable and high-performance drilling fluid. The results confirmed that the novel OC does not affect the drilling fluid density but enhances the emulsion stability with a 9% increment compared with the drilling fluid formulated with MC-TONE. The sagging experiments showed that Claytone-IMG 400 prevented the sagging issues in both static and dynamic conditions. Also, Claytone-IMG 400 improved the plastic viscosity (PV), yield point (YP), and apparent viscosity (AV). The PV, YP, and AV were improved by 30%, 38%, and 33% increments respectively compared with the drilling fluid formulated with MC-TONE. The YP/PV ratio increased with a 6% increment from 1.12 to 1.19. Moreover, the gel strength (GS) was significantly increased, and the filtration properties were enhanced. The filtration volume was reduced by 10% from 5.0 to 4.5 cm3, and the filter cake thickness had a 37.5% reduction from 2.60 to 1.89 mm. The novelty of this study is highlighted by the introduction and evaluation of Claytone-IMG 400 as a new rheological additive for safe, efficient, and cost-effective drilling operations. The results indicate that Claytone-IMG 400 significantly improves the stability and performance of OBDFs, thereby reducing wellbore instability and drilling-related problems.

Application of Organoclays in Oil-Based Drilling Fluids: A Review.

Organoclays (OCs), formed by surface modification of clay minerals using organic compounds, are typical additives for providing rheology for oil-based drilling fluids (OBDFs). There are different studies on the effect of OCs on the rheological properties of oil-based systems under high-pressure, high-temperature (HPHT) conditions, but finding new OCs as rheology control agents is attractive for drilling fluid engineers. This work reviews different OCs used in OBDFs, namely, organo-montmorillonite (OMMT), organo-sepiolite (OSEP), and organo-palygorskite (OPAL). Furthermore, the structure of OCs in OBDFs, their rheological properties, and the thermal stability of OCs were investigated. Besides, the role of fibrous and layered OCs in enhancing the rheological properties of OBDFs is illustrated. Finally, the synergistic use of different OCs to enhance the thermal stability and rheological properties of the OBDFs is presented. The study highlights research gaps and recommendations for research approaches and potential areas that need further investigation. The application of OCs in OBDFs is a wide field and has huge potential to be developed. The use of OCs in OBDFs will promote development in the oil and gas industry.

Development of emulsified acid system (EAS) using organoclays (OC): Rheology and implication to the acidizing

Matrix acidizing is a well-stimulation technique extensively used in the petroleum industry to increase well productivity by removing scales and creating channels in the rocks. However, conventional acidizing fluids used in this process have some limitations such as rapid reactions with scale and fines, high acid strength, and corrosion of equipment at high temperatures. To address these issues, emulsified acid system (EAS) is used in fracturing and acidizing operations for carbonate reservoirs to improve well productivity by removing formation damage. EAS can help to improve well productivity by creating deeper and narrower wormholes through reduced reaction rates of acid due to the external oil phase. However, EAS has limitations such as low stability at high temperatures, high viscosity that restricts pumping rates, potential formation damage, and difficulty in achieving homogenous mixing. Pickering emulsions, which use solid microparticles as a stabilizer instead of surfactants, show promise in overcoming these challenges due to their easy preparation, good thermal stability, and low viscosity at high shear rates.This study investigates the use of different types of organoclays (OC) for the development of an emulsified HCl acid systems for carbonate reservoirs. Several experiments were conducted to demonstrate and evaluate the use of OC for EAS and to improve field operations. To advance the development of EAS, a meticulous process was undertaken to select and optimize OCs as the key component. It include mineral characterization by XRD and XRF techniques, optimization of OC concentration (250–1000 ppm), and mixing speed (4000–8000 RPM). The thermal stability of the EAS was evaluated for a temperature range of 25–160 °C and a comprehensive analysis of EAS rheology (0.1–1000 sec−1) was performed. The conductivity, drop-test analysis, as well as micrographic analysis, were carried out to ensure the formation of invert emulsion. It was found that the required mixing speed was 6000 RPM and the optimum OC concentration was 500 ppm for developing a stable invert emulsion. The viscosity of the EAS shows increasing trends with an increase in temperature at the low shear rates (below 10 sec−1); however, at high shear rates (higher than 10 sec−1), the EAS viscosity decreases with temperature. The study found that OCs are promising emulsifiers for creating EAS with good thermal stability and low viscosity at high shear rates. The EAS formulated using OC were robust and thermally stable, making them suitable for field mixing procedures. Additionally, the OC used in the study are cost-effective, readily available, environmentally friendly, and have a high surface area, making them advantageous as an emulsifier.

Comparative Study of Protection Efficiency of C-Steel Using Polystyrene Clay Nanocomposite Coating Prepared from Commercial Indian Clay and Local Khulays Clay

This work aimed to compare the coating protection efficiency of C-steel using two kinds of clay: a local Khulays clay (RCKh) from Saudi Arabia and a commercial clay (CCIn) from India. Clay-based polymer nanocomposites have a unique layered structure, rich intercalation chemistry, and availability at low cost. They are promising reinforcements for polymers. The raw clay for both clay types was washed before being treated with NaCl to produce sodium clay (NaC). The cationic surfactant cetylpyridinium chloride (CPC) was then used to convert the NaC into the organoclay (OC) form. Polystyrene/organoclay nanocomposites (PCNs) were prepared by combining different concentrations of organoclay (1%, 3%, and 5% OC) in toluene solvent and polystyrene (PS) as the matrix. To ensure the success of the PCN modification process, the organoclay and PCN films were characterized using a variety of techniques, including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The shifts in the FT-IR spectra after the CPC treatment of NaC confirmed the presence of CPC in the organoclay samples and the presence of OC in the PCNs. The exfoliated structure was obtained from the XRD spectrum for low clay loading (1–3% PCN), while the intercalated structure was the dominant form for the 5% PCN. The XRD results were confirmed by TEM images. To calculate the coating efficiency of the PCNs, various electrochemical methods were used. The electrochemical measurements included electrochemical impedance spectroscopy (EIS), the electrochemical frequency modulation (EFM) method, and Tafel plots. The PCN with a concentration of 1 wt.% OC has a fully exfoliated structure and higher coating efficiency than the PCNs with partially exfoliated structures (3 wt.% and 5 wt.%). It was found from the Tafel plots that commercial Indian clay has better corrosion protection (81.4%) than local Khulays clay (60.2%). A comparison with other studies using current density values shows that our results are superior to those of many studies.

Optimization of Thermal and Rheological Properties of HDPE-Organoclay Composite Using Response Surface Methodology

The processing parameters to disperse active filler within a polymer matrix to enhance the polymers’ properties should be selected carefully to achieve the best dispersion. In this research, Box-Behnken Design (BBD), an experimental design for response surface methodology (RSM), with three levels was used as a design of experiment (DOE) to analyze the effect of processing parameters on the thermal and rheological properties of high-density polyethylene-organoclay (HDPE-OC) composites prepared by adding organoclay (OC) to high density polyethylene (HDPE) using melt blending method. HDPE-OC composites were characterized morphologically by SEM and XRD, and thermally by DSC and TGA, and tested rheologically. Investigated factors were filler amount, mixing temperature and screw speed. The evaluated responses were melting temperature, degradation temperature, storage modulus, and complex viscosity of HDPE-OC composites. The effect of each factor on the responses was determined through an analysis of variance (ANOVA). The obtained data was used to predict the responses by fitting into a second order equation with MINITAB software. Constructed models were verified using validation experiments therefore optimum melt blending processing parameters obtained as 1.5 wt.% of OC, mixing temperature of 183 °C, and screw speed of 77 rpm for HDPE-OC composites.

Interaction of Indigo carmine with naturally occurring clay minerals: An approach for the synthesis of nanopigments

Dyes are organic colorants used in textile, paint, printing and many more industries for different purposes, especially to make the products more attractive. However, these organic compounds can not be removed easily from water bodies due to their non-biodegradable nature. In this context, this paper aims at the application of clay minerals and their organo forms which were used to remove the anionic dye, Indigo Carmine from aqueous media at different conditions such as pH, contact time and initial concentration by employing batch extraction method. Synthesis of organo clay was done through ion-exchange method using cationic surfactant (Cetylpyridinium chloride). The adsorbents (before and after adsorption of dye) were characterized using different analytical techniques like X – Ray diffraction, Fourier Transform Infra-Red spectroscopy, UV–vis spectroscopy. During the study, it was found that the efficiency for uptake of anionic dye was more for organo clay (Organo Montmorillonite − 330 mg g−1 and Organo Bentonite − 468 mg g−1) at favorable acidic condition as the surface of Montmorillonite and Bentonite become positively charged after interaction with surfactant results in electrostatic interaction between dye and organo clays. As there was no significant change in diffraction peak of adsorbent after interaction with dye suggested the surface interaction of dye which was further supported by FT-IR studies.

Surface Characterization and Anti-Biofilm Effectiveness of Hybrid Films of Polyurethane Functionalized with Saponite and Phloxine B.

The main objective of this work was to synthesize composites of polyurethane (PU) with organoclays (OC) exhibiting antimicrobial properties. Layered silicate (saponite) was modified with octadecyltrimethylammonium cations (ODTMA) and functionalized with phloxine B (PhB) and used as a filler in the composites. A unique property of composite materials is the increased concentration of modifier particles on the surface of the composite membranes. Materials of different compositions were tested and investigated using physico-chemical methods, such as infrared spectroscopy, X-ray diffraction, contact angle measurements, absorption, and fluorescence spectroscopy in the visible region. The composition of an optimal material was as follows: nODTMA/mSap = 0.8 mmol g−1 and nPhB/mSap = 0.1 mmol g−1. Only about 1.5% of present PhB was released in a cultivation medium for bacteria within 24 h, which proved good stability of the composite. Anti-biofilm properties of the composite membranes were proven in experiments with resistant Staphylococcus aureus. The composites without PhB reduced the biofilm growth 100-fold compared to the control sample (non-modified PU). The composite containing PhB in combination with the photodynamic inactivation (PDI) reduced cell growth by about 10,000-fold, thus proving the significant photosensitizing effect of the membranes. Cell damage was confirmed by scanning electron microscopy. A new method of the synthesis of composite materials presented in this work opens up new possibilities for targeted modification of polymers by focusing on their surfaces. Such composite materials retain the properties of the unmodified polymer inside the matrix and only the surface of the material is changed. Although these unique materials presented in this work are based on PU, the method of surface modification can also be applied to other polymers. Such modified polymers could be useful for various applications in which special surface properties are required, for example, for materials used in medical practice.

Evaluation of solvent transport and cure characteristics of chlorobutyl rubber graphene oxide nanocomposites

Chlorobutyl rubber (CIIR) is a significant type of synthetic rubber with interesting properties and thereby finds applications in numerous filed. Insertion of nanofillers like organo clay, carbon nanotubes, graphene etc. into CIIR matrix reduces the permeability which is useful for the synthesis of membranes with less solvent and gas permeation. In this work, introduction of graphene oxide (GO) improved the cure characteristics of CIIR matrix. Bound rubber content also improved with increasing filler concentration. Moreover, a reduction in mol percentage of uptake was observed with increase in temperature. This study clearly shows the ability of GO in CIIR matrix to prevent the solvent transport through the polymer, which opens its application in chemical protective clothing.

STRUCTURAL ANALYSIS OF THE REINFORCEMENT OF POLYMER/ ORGANOCLAY NANOCOMPOSITES WITH VITREOUS AND ELASTOMERIC MATRICES

STRUCTURAL ANALYSIS OF THE REINFORCEMENT OF POLYMER/ ORGANOCLAY NANOCOMPOSITES WITH VITREOUS AND ELASTOMERIC MATRICES

Comparison of in situ sediment remediation amendments: Risk perspectives from species sensitivity distribution.

Contaminated sediment is a major issue for aquatic environments, but attention must be kept even during remediation activities that can negatively affect resident biota especially when applied in situ. For the first time, the species sensitivity distribution (SSD) approach was applied to amendments used for in situ sediment remediation considering 39 papers including both freshwater (F) and saltwater (S) effect data (i.e. n=17 only F, n=19 only S, and n=3 both F and S). Toxicity data related to the application of activated carbon (AC), nano-Zero-Valent-Iron (nZVI), apatite (A), organoclay (OC) and zeolite (Z) were collected and analyzed. SSD curves were constructed by lognormal model providing comprehensive comparisons of the sensitivities of different species to the relative testing methods. Results indicated that Bacteria were the most sensitive group of testing organisms, while Crustaceans were the less sensitive. The hazardous concentration for 5% of the affected species (HC5) were derived to determine the concentration protecting 95% of the species. OC, A and Z presented both acute and chronic toxicity. The HC5 values in descending order are: AC (4.79g/L)>nZVI (0.02g/L)>OC, A and Z (1.77E-04g/L). AC and nZVI can be considered safer than OC, A and Z in sediment remediation activities, even if in situ long-term effects remained still underexplored.

Properties of ceramic fabricated of synthetic carbon and organoclay based on carbon particle size

Properties of ceramic fabricated of synthetic carbon and organoclay based on carbon particle size

Poly(4-vinylpyridine) and poly(vinyl acetate –co-4-vinylpyridine) grafted polyvinyl chloride membranes for removal of tetrahydrofuran from water by pervaporation

The organophilic character of polyvinyl chloride (PVC) membrane was significantly improved by graft copolymerization with i) different wt. % of 4-vinylpyridine (4VP) and ii) 4VP and vinyl acetate (VA) taken at different molar ratios. The graft copolymers were further filled with organo clay in situ during polymerization. Membranes prepared from these unfilled and organo clay filled polymers were characterized by FTIR, NMR, XRD, SEM, TEM, EDAX, DTA-TGA and mechanical properties. These membranes were used for sorption and pervaporation of 0.5–20 wt% of tetrahydrofuran (THF) from water. The effect of the synthesis and the process variables on sorption and pervaporation were studied with fitting of the experimental sorption and pervaporation data to the engaged species induced clustering (ENSIC) and resistance in series model, respectively. The experimental data showed close fitting to the models. The PVC membrane grafted with poly(4VP) and poly (4VP-co-VA), each containing 1.5 wt% organo clay showed a flux /THF selectivity of 0.215 kg/m2h/97 and 233 kg/m2h /105, respectively for 12.5 wt% THF in feed at 30 °C.

ENHANCING PERFORMANCE OF SILICA-REINFORCED NATURAL RUBBER TIRE TREAD COMPOUNDS BY APPLYING ORGANOCLAY AS SECONDARY FILLER

ABSTRACT Silica-reinforced natural rubber (NR) tire tread compounds are investigated using organoclay (OC) as secondary filler. By varying mixer temperature settings at a silica/OC ratio of 45/10 phr, dump temperatures are reached of approximately 120, 140, 150, and 160 °C. The increased dump temperature leads to a better silanization reaction resulting in lower mixing torque, Mooney viscosity, and Payne effect. The optimum mixing dump temperature was found to be around 150 °C. By varying the loadings of OC in the silica-filled NR compounds from 0 to 36 wt% relative to total filler amount, the increased OC loadings decreased the Payne effect and compound viscosities, significantly shortened scorch and cure times, and raised the tan delta at −20 and 0 °C as indications for ice traction and wet skid resistance of tire treads made therefrom. The optimum loading of OC of 9 wt% relative to total filler content shows better Payne effect, cure rate index, tan delta at −20 and 60 °C indicative for rolling resistance, and DIN (German Institute of Standardization) abrasion resistance index. The results indicate that the use of this hybrid filler may provide tires with better wet traction and lower rolling resistance and wear resistance compared with the pure silica-filled system.

Thermal, tensile and rheological properties of dynamically cross-linked organoclay filled poly(ethylene-co-vinyl acetate)/acrylonitrile-butadiene rubber nanocomposites: Effect of peroxide content

Nanocomposites based on poly(ethylene-co-vinyl acetate) (EVA) and acrylonitrile-butadiene rubber (NBR) with 50 wt% NBR and 5 wt% organoclay (OC) content were dynamically cross-linked with 0–2 wt% dicumyl peroxide (DCP). The x-ray diffraction and transmission electron microscopy results showed that the extent of exfoliation of the OC layers increased with the addition of DCP. The results of the tensile tests revealed that the values of tensile strength, yield stress, elastic modulus and the modulus at 100% and 300% strain were gradually increased with the increase in DCP content. Thermal analysis studies indicated that the nucleation rate for the cross-linked nanocomposites progressively decreased and the crystallite size distribution became wider with increasing in the amount of DCP. Moreover, the relaxation ratio and relaxation rate index were decreased by 38.8 and 66.4%, respectively, for the nanocomposite cross-linked with 2 wt% DCP in comparison with those of the uncross-linked counterpart.

Study on the formation mechanism of a flat rheology by poly(diethylenetriamine dimer acid amide) and organoclay in nonaqueous drilling fluids over a wide temperature range

This work aims to establish the relationship between the morphology and rheology changes affected by the addition of Flat-rheology modifier (FRM) to organoclay (OC)/white oil dispersions between 2 and 65 °C to analyze the flat-rheology formation mechanism in nonaqueous drilling fluids. The FRM used in this work is poly(diethylenetriamine dimer acid amide), and the OC is organo-montmorillonite. Temperature-controlled rheological tests confirmed that FRM addition to dispersions with low OC loadings (lower than 3.0 wt%) results in a relatively constant gel strength from 2 to 65 °C. This could be explained by the morphology variations in the dispersions generated by the FRM. Based on macroscopic settlement, particle size distribution, optical microscopy, transmission electron microscopy (TEM) and wide-angle X-ray scattering (WAXS) results, FRM molecules were inserted into and enlarged the interlayer space between OC platelets, thus reducing the particle size and improving the dispersion stability. Subsequently, the original card house network formed by OC particles was destroyed, and a new network with a larger volume fraction was formed by the highly dispersed platelets and FRM molecules. The increase in network volume fraction and extension of FRM molecular carbon chains with increasing temperature inhibit network strength deterioration. As a result, the rheological properties at 65 °C remained similar to those at 2 °C, thereby forming a flat rheology.

Effect of organoclay content on mechanical and rheological properties of dynamically cross-linked acrylonitrile-butadiene rubber/poly(ethylene-co-vinyl acetate)/organoclay nanocomposites

Blends of poly(ethylene-co-vinyl acetate) (EVA) and acrylonitrile-butadiene rubber (NBR) with NBR content of 50 wt% and organoclay (OC) contents of 1, 3, 5 and 7 wt% have been prepared and cross-linked with 0.3 wt% dicumyl peroxide (DCP) in an internal mixer. The results obtained from x-ray diffraction and transmission electron microscopy for the uncross-linked nanocomposites containing 7 wt% OC show that although a part of the nanofiller layers are exfoliated, the rest of the particles remained almost intercalated. However, it is found that cross-linking with DCP markedly increased the amount of exfoliated platelets. The results also reveal that gel content and cross-linking rate slightly increased in the presence of the OC. The analysis of data obtained from the tensile experiments indicates that the tensile modulus and yield stress of the nanocomposites are superior to those of the unfilled blend and the values improve with the increase in the OC content. Apart from the value of strain at break, all other mechanical properties studied are found to be higher for the cross-linked nanocomposites than those of their uncross-linked counterparts. Moreover, the relaxation ratio and relaxation rate index are decreased with an increase in the OC content for the uncross-linked and cross-linked materials.

Miscibility studies of polystyrene/polyvinyl chloride blend in presence of organoclay

AbstractPolystyrene (PS)/ polyvinyl chloride (PVC) blends of different compositions, with and without organoclay (OC) were prepared by a solution casting method. PS and PVC were combined in ratios of 100/0, 90/10, 10/90, and 0/100. Local clay was treated with 0.5M NaCl to generate sodium clay (Na-clay). The Na-clay was subsequently modified using the cationic surfactant, cetylpyridinium chloride (CPC), at a concentration of 0.5 times that of Na-clay. The CPC-modified clay was denoted as organoclay (OC). The organoclay was dispersed in PS/PVC blends (90/10 and 10/90) with different weight percentages of OC (0%, 1%, 5%, and 10%). To evaluate the miscibility of PS/PVC blends, the blends with and without OC were characterized using Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM and TEM). The addition of OC to the PS/PVC blends produced exfoliated nanocomposites, as proven by XRD. The SEM and TEM micrographs showed that the PS/PVC(10/90) blend components were more miscible than those of the PS/PVC(90/10) blend, leading to favorable morphology.

Semi-permeable membrane fabricated from organoclay/PS/EVA irradiated by ɣ-rays for water purification from dyes

This article summarizes the modification of bentonite to organoclay consisting of aniline monomer incorporated into the bentonite matrices. The organoclay (OC) hybrid has been exposed to gamma rays at dose of 50 kGy resulting the aniline polymerization. Organoclay's color is dark red. The blend polymer (PS/PEVA) was mixed with 33 wt% organoclay in Toluene solvent and then irradiated to 50 kGy. Many characterization techniques have been used to identify changes in clay in organoclay (OC) have relatively high surface area, strong dye adsorption and highly variable surface area. XRD analysis shows increased of interplanar distance (d) of bentonite after aniline modification that confirmed by FTIR analysis and also when composite with blend polymer (PS/PEVA). SEM reveals the irregular pores structure of semi-permeable membrane ranged from 35 to 3 μm. In this article, novel membrane's ability to purify water polluted with three different dyes: Toluidine Blue (TB), Amido Black (AB) and Remazol Red (RR). It is inferred from results that the aniline treatment enhances dye adsorption by bentonite and increases dye adsorption when composite with blend polymer. This future is give effective water purification membrane. It was found that over 99% TB molecules in water solution were adsorbed by OC/PS/PEVA in fifteen second.