Remazol Yellow Dye Research Articles

Preparation of Cellulose Pineapple (Ananas comosus) Peel as Adsorbent of Remazol Yellow Dye

The extraction of cellulose from pineapple (Ananas comosus) peel has been carried out through delignification using alkaline and hydrolysis with acid. The extraction of cellulose was carried out by de-waxing, delignification followed by hydrolysis with H2SO4 acid. The cellulose obtain was identified by FTIR and SEM-EDS. The results showed that the FTIR spectra of pineapple peel cellulose contain hydroxyl and carboxyl functional groups which useful in the adsorption process. The morphology of cellulose has a more homogeneous and porous shape. The cellulose obtained was used for adsorption of Remazol yellow dye by studying adsorption parameters, namely the effect of pH, contact time and solution concentration. The adsorption process was obtained at pH 2, the optimum contact time was 30 minutes and concentration at 100 mg/L with an adsorption capacity is 19.888 mg/g.

Batch and Fixed-Bed Modeling of Adsorption Reactive Remazol Yellow Dye onto Granular Activated Carbon

In this work, the adsorption of reactive yellow dye (Remazol yellow FG dye) by granular activated carbon (GAC) was investigated using batch and continuous process. The batch process involved determination the equilibrium isotherm curve either favorable or unfavorable by estimation relation between adsorption capacity and concentration of dye at different dosage of activated carbon. The results were fitted with equilibrium isotherm models Langmuir and Freundlich models with R2value (>0.97). Batch Kinetic study showed good fitting with pseudo second order model with R2 (0.987) at contact time 5 h. which provesthat the adsorption is chemisorptions nature. Continuous study was done by fixed bed column where breakthrough time was increased at flow rates (21.67, 12.5 and 6 ml/min) and initial dye concentration (80, 40, 20 and 10 mg/l) were decreased and bed depth was increased (5, 10, 15 and 20 cm). The adsorption data were fitted to the fixed-bed adsorption mathematical models Thomas and Yoon- Nelson models. The results fitted well to the Thomas and Yoon-Nelson models with correlation coefficient, R2≥ 0.944. Average relative error ARE% was applied to examine the theoretical and experimental results.

Removal of Remazol Yellow Using SnO2-Co Photocatalyst

Remazol yellow is a synthetic dye that pollutes the environment and causes disease because it is carcinogenic and mutagenic. Photocatalyst is one of the technologies to remove the dye concentration, and tin oxide (SnO2) with cobalt (Co) dopant has the potential to be a good semiconductor in the process. Therefore, this study aims to synthesize SnO2/Co composites as a photocatalyst to degrade Remazol yellow dye. The photodegradation process was carried out with several variables, including the effect of time and the initial concentration of the dye and conditions under pHpzc. Furthermore, the composites were made with SnO to Co mass ratios of (2:1), (2:2), (2:3), and were characterized using X-Ray Diffraction (XRD), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), and Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS) instruments. Based on the results, the SnO2/Co (2:3) composite was selected as a photocatalyst to degrade the dye as the XRD characterization showed the formation of a typical peak of 2θ at 33o. The energy bandgap of SnO2 is 3.05 eV, while the (2:3) composite had a value of 2.8eV. Moreover, the SEM characterization showed a non-uniform surface with pores and elements composition of Sn, O, and Co with the values 61.24, 24.67, and 14.09 wt%, respectively. The optimum condition for photodegradation was obtained at a contact time and concentration of 180 minutes and 10 ppm, respectively, while the removal of the dye reached 65-80%.

Probing the Site-Selective Doping in SrSnO3:Eu Oxides and Its Impact on the Crystal and Electronic Structures Using Synchrotron Radiation and DFT Simulations.

The impact of Eu3+ doping at the Sr2+ and Sn4+ sites in SrSnO3 on its structural and electronic properties was studied and correlated with the photocatalytic efficiency. The compounds were synthesized using a modified Pechini method. Refinement of the synchrotron X-ray diffraction (S-XRD) data showed that the samples had an orthorhombic Pbnm symmetry. The incorporation of Eu into the lattice led to increased short- and long-range disorder, inducing additional distortion in the SnO6. XANES measurements revealed that mixed Eu valences (Eu3+ and Eu2+) were present in Eu-doped samples, and DFT calculations confirmed the presence of these ions at Sr2+/Sr4+ sites in the SrSnO3, resulting in changes in the electronic behavior. The catalytic performance toward Remazol yellow dye photodegradation and the catalysts' surface properties were also evaluated. The catalytic efficiency followed the order of Sr(Sn0.99Eu0.01)SnO3 > (Sr0.99Eu0.01)SnO3 > SrSnO3. The order was clearly related to selected-site doping that changed the degree of the inter- and intraoctahedral distortion and the introduction of different Eu midgap states, which apparently favor charge separation upon photoexcitation during photocatalysis. The results shown here are of great importance to the functionalization of SrSnO3 and other perovskite materials by lanthanoid ions, especially Eu3+, for effective applications as photocatalysts.

Char from Spent Tire Rubber: A Potential Adsorbent of Remazol Yellow Dye

A char produced from spent tire rubber showed very promising results as an adsorbent of Remazol Yellow (RY) from aqueous solutions. Spent tire rubber was submitted to a pyrolysis process optimized for char production. The obtained char was submitted to chemical, physical, and textural characterizations and, subsequently, applied as a low-cost adsorbent for dye (RY) removal in batch adsorption assays. The obtained char was characterized by relatively high ash content (12.9% wt), high fixed-carbon content (69.7% wt), a surface area of 69 m2/g, and total pore volume of 0.14 cm3/g. Remazol Yellow kinetic assays and modelling of the experimental data using the pseudo-first and pseudo-second order kinetic models demonstrated a better adjustment to the pseudo-first order model with a calculated uptake capacity of 14.2 mg RY/g char. From the equilibrium assays, the adsorption isotherm was fitted to both Langmuir and Freundlich models; it was found a better fit for the Langmuir model to the experimental data, indicating a monolayer adsorption process with a monolayer uptake capacity of 11.9 mg RY/g char. Under the experimental conditions of the adsorption assays, the char presented positive charges at its surface, able to attract the deprotonated sulfonate groups (SO3−) of RY; therefore, electrostatic attraction was considered the most plausible mechanism for dye removal.

The Chicken Utilization Of Α-Keratin Of Waste Chicken Feathers In Enviromental As Adsorben Of Procion Red And Remazol Yellow Dye

as the adsorbent. The adsorption characterization of activated chicken feathers by Na2S 0.1 N and non-activated chicken feathers was determined. Effect of variation experimental parameters pH, Contact time and variation dye concentration also being investigated in a batch adsorption method. Procion and Remazol Yelloow were characterized by UV-Vis spectroscopy
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 The results show that the contact time and pH condition for adsorption equilibrium are 120 min for activated chicken feathers and 100 min for chicken feathers which were not activated by Na2S at pH 3. Procion red dye absorption by activated and not activated chicken feathers follows Freundlich isotherm and follow Langmuir isothrem. For remazol yellow dye absorption by activated and not activated chicken feathers follows Langmuir isotherm and Freundlich isothrem and the reaction kinetics follow the Ho equation.
 
 Keywords: adsorption, chicken feather, procion red, remazol yellow

KONDISI OPTIMUM ADSORPSI-FLUIDISASI ZAT WARNA LIMBAH TEKSTIL MENGGUNAKAN ADSORBEN JANTUNG PISANG

To show that banana inflorescence has effective adsorbent for the adsorption of dyes (congo red, remazol yellow, remazol black and methylene blue) from textile dyes waste and also to detrmine the optimum conditions of variety of pH (4-10), temperature (30°C-90°C), and contact time (15-105 minute) on the percentage adsorption capacity of banana inflorescence. Textile dyes waste and their degradation products such as aromatic amines are highhly carcinogenic. Adsorption-fluidization is a new technology for treatment of waste water containing different types of dyes. Adsorption-fluidization process is adopted for adsorption of dyes from the textile dyes waste using banana inflorescence in treated form and were analysed by Utraviolet-Visible Spectroscopy. The results showed that the optimum condition from adsorption process of Congo Red dye by banana inflorescence was reached at pH 5 (1.78%), temperature 60°C (1.51%) and 45 minute contact time (1.63%). While Remazol Yellow dye optimum at pH 9 (4.29%), temperature 50°C (4.65%) and 75 min (1.83%). Another dye, Methylene Blue showed the optimum condition at pH 9 (0.36%), temperature 40°C (0.22%) and 45 min contact time of adsorption (0.43%). The last, Remazol Black dye was reached at pH 5 (0.56%), temperature 40°C (0.56%) and 75 min contact time (0.56%).

Aluminum doped mesoporous silica SBA-15 for the removal of remazol yellow dye from water

Aluminum doped mesoporous silica SBA-15 was synthesized and characterized using nuclear magnetic resonance spectroscopy, nitrogen adsorption, X-rays diffraction, thermogravimetry, scanning and transmission electron microscopy. The modified mesoporous silicas [Al]SBA-15 and [2Al]SBA-15 showed high sorption capacities of remazol yellow dye (RY) of about 0.971 and 0.821 mmol g−1 respectively, when compared to original precursor silica SBA-15 (0.725 mmol g−1). The sorption kinetic of RY dye was slow and the equilibrium reached in 4–5 h. The effect of pH on sorption process was studied at room temperature and maximum dye sorption was achieved at pH 7. Kinetic data of RY sorption onto mesoporous silica was best fitted to second-order kinetic model. The equilibrium data were fitted to the Langmuir, Freundlich and Sips isotherm models. The obtained results suggest that doped mesoporous silica can be an efficient, cheap sorbent and convenient method for the removal of reactive dyes such a RY from industrial effluents.

Effect of salts on the removal of remazol yellow by using activated charcoal prepared from sawdust

This study was to investigate the removal of Remazol Yellow dye from aqueous solutions by adsorption on activated charcoal prepared by chemical activation of saw dust. The dye removal was 85% which was increased to 94% with the addition of 1.0 g of NaCl electrolyte for 50 mL dye solution. The data were well fitted in Langmuir isotherm. The interactions were evaluated with respect to both pseudo-first-order and pseudo-second-order reaction kinetics. The adsorption process was found to follow the pseudo-second-order model. To optimize the operating conditions, the effect of pH, temperature, adsorbent dosage, and initial dye concentration and initial volume of dye solutions were investigated. The obtained results indicated that the utilization of activated charcoal produced from saw dust played an important role in the removal of Remazol Yellow(RY) dye from aqueous solutions. In addition, saw dust was low cost and easily available material. It can be an alternative adsorbent precursor for more expensive adsorbents used for RY removal.Bangladesh J. Sci. Ind. Res. 50(4), 285-292, 2015

Factorial experimental design for Remazol Yellow dye sorption using apple pulp/apple pulp carbon–titanium dioxide co-sorbent

Dye containing effluents can cause severe organic and color pollution in the water environment, thus removal of reactive dyes by sorption is an important circumstance. The aim of this study was to identify the operating conditions which influence Remazol Yellow dye sorption from aqueous solutions. There are limited numbers of literature studies about Remazol Yellow dye sorption. Despite that the sorption of Remazol Yellow dye by co-sorbent system and optimization of such process have not yet been studied. Thus, apple pulp and carbonized apple pulp at 550 °C were used as sorbents, also apple pulp–titanium dioxide and apple pulp carbon–titanium dioxide mixtures were used as co-sorbents. Elemental analysis, X-ray fluorescence spectroscopy, scanning electron microscopy, zeta potential, particle size distribution, and Fourier transform infrared spectroscopy analysis were conducted to analyze apple pulp and apple pulp carbon. The effects of pH, initial dye concentration and contact time were investigated by 33 full factorial experimental design method and analysis of variance statistical approach to optimize the operating conditions. The maximum percentage dye removal was obtained as 86.97% (sorbent type = apple pulp–titanium dioxide, pH = 2, initial dye concentration = 10 mg/L and contact time = 120 min). pH, initial dye concentration and contact time were found as significant within a 95% confidence level for all type of sorbents. Equilibrium isotherm data were fitted to Langmuir and Freundlich equations and the Langmuir model showed the best fit with equilibrium isotherm data. Furthermore, pseudo-first and second-order kinetic models were also used to analyze sorption kinetics. Since apple pulp was low-cost and easily available material, and also application of co-sorbent was influential for dye sorption; it could be successfully applied for the removal of Remazol Yellow dye from aqueous solutions.

Full Factorial Experimental Design Analysis of Reactive Dye Removal by Carbon Adsorption

The objective of this study was to investigate the removal of Remazol Yellow dye from aqueous solutions by adsorption on activated carbon prepared by chemical activation of sunflower seed cake. It was found that the carbon content of biomass increases up to 65.12% after activation and carbonization processes. The maximum percentage dye removal was obtained as 82.12% with 0.4 g/50 mL adsorbent dosage at 313 K. The Langmuir model showed the best fit with equilibrium isotherm data. The interactions were evaluated with respect to both pseudo‐first‐order and pseudo‐second‐order reaction kinetics. The adsorption process was found to follow the pseudo‐second‐order model. To optimize the operating conditions, the effects of pH, adsorbent dosage, and initial dye concentration were investigated by full factorial experimental design method; adsorbent dosage was found as the most significant factor with P = 0.02 lower than 95% confidence level. The obtained results are very promising since (i) the utilization of sunflower seed cake activated carbon (SSCAC) played a critical role in the adsorption of dye; (ii) sunflower seed cake was an intriguing, low‐cost, and easily available material. It can be an alternative adsorbent precursor for more expensive adsorbents used for Remazol Yellow (RY) removal.

Removal of remazol yellow from aqueous solution using Fe–Cu and Fe–Ni nanoscale oxides and their carbonaceous composites

Fe–Cu and Fe–Ni nanoscale oxides and their carbonaceous composites (C/Fe–Cu and C/Fe–Ni, 75/25 wt.%; C/Fe–Cu and C/Fe–Ni 95/5 wt.%), made from pyrolysis of sewage sludge, have been evaluated to remove remazol yellow textile dye from aqueous solution. The kinetic and sorption isotherms experimental results were best fitted to the pseudo-second-order kinetic and Langmuir–Freundlich isotherm models, which indicates that the sorption mechanism may be chemisorption onto heterogeneous surfaces. Fe–Ni and Fe–Cu nanoscale oxides adsorption capacities were 157.8 mg/g and 117.6 mg/g, resulting in nearly 83% and 70% of dye removal, respectively, using 100 mg/L of initial dyestuff concentration and 10 mg of each material. The adsorption capacities of Fe–Cu, Fe–Ni oxides and C/Fe–Cu 75/25%, C/Fe–Ni 75/25% composites provide better results at pH between 3 and 5. In addition, three sorption–desorption cycles using 30% H2O2 solution and distilled water were performed: sorption efficiencies for all materials decreased after each cycle; nevertheless, Fe–Cu and Fe–Ni nanoscale oxides were the best materials for the removal of remazol yellow dye.

Adsorção do corante têxtil amarelo remazol usando um dos rejeitos da fabricação da alumina como adsorvente

Esse trabalho discute a possibilidade de utilização de um dos rejeitos da fabricação da alumina, pó retido no filtro eletrostático, na adsorção do corante amarelo remazol, usado rotineiramente na indústria têxtil. Os resultados mostram, para uma solução aquosa 50 mg L-1, cerca de 95 % de remoção do corante em solução. O modelo de isoterma de Langmuir mostrou-se adequado para descrever o mecanismo de adsorção desse corante. A capacidade de adsorção do corante depende da sua estrutura e das interações corante-adsorvente.