scholarly journals Potential Biosorbent Derived fromCalligonum polygonoidesfor Removal of Methylene Blue Dye from Aqueous Solution

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Asma Nasrullah ◽  
Hizbullah Khan ◽  
Amir Sada Khan ◽  
Zakaria Man ◽  
Nawshad Muhammad ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Particle Size ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Particle Size Analyzer ◽  
Initial Ph ◽  
Pseudo Second Order ◽  
Kinetics Of

The ash ofC. polygonoides(locally called balanza) was collected from Lakki Marwat, Khyber Pakhtunkhwa, Pakistan, and was utilized as biosorbent for methylene blue (MB) removal from aqueous solution. The ash was used as biosorbent without any physical or chemical treatment. The biosorbent was characterized by using various techniques such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The particle size and surface area were measured using particle size analyzer and Brunauer-Emmett-Teller equation (BET), respectively. The SEM and BET results expressed that the adsorbent has porous nature. Effects of various conditions such as initial concentration of methylene blue (MB), initial pH, contact time, dosage of biosorbent, and stirring rate were also investigated for the adsorption process. The rate of the adsorption of MB on biomass sample was fast, and equilibrium has been achieved within 1 hour. The kinetics of MB adsorption on biosorbent was studied by pseudo-first- and pseudo-second-order kinetic models and the pseudo-second-order has better mathematical fit with correlation coefficient value (R2) of 0.999. The study revealed thatC. polygonoidesash proved to be an effective, alternative, inexpensive, and environmentally benign biosorbent for MB removal from aqueous solution.

scholarly journals Removal of nickel ions and methylene blue dyes from aqueous solutions using alkaline algae biomass

2019 ◽  
Vol 26 (3) ◽  
pp. 17-24
Author(s):  
Aya Abbas Najim ◽  
Ahmed A. Mohammed
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Diffusion Kinetic ◽  
Algae Biomass ◽  
Nickel Ions ◽  
Maximum Sorption Capacity ◽  
Pseudo Second Order

The sorption of nickel (II) and methylene blue dye (MB) from aqueous solution by alkaline treated algae biomass was investigated. 0.05 M NaOH resulted in increasing the removal efficiency of algae biomass from 77.48 to 97.43% and from 79.71 to 97.53 % for Ni (II) and MB, respectively. Pseudo first order, pseudo second order and intra- particle diffusion kinetic models were tested, good coefficients of determination (R2) were attained from pseudo second order kinetic model for both contaminants; therefore, chemical adsorption was the mechanism that governed the sorption process by alkaline treated algae. The data were best fitted to Langmuir isotherm model and a maximum sorption capacity achieved were 2.889 mg/g for Ni (II) and 6.406 mg/g for MB. The separation factor shows irreversible isotherm type due to RL  1 for both contaminants. Alkali pretreatment of algae mixture could be an effective and low cost strategy for enhancing Ni (II) and MB sorption from aqueous solution.

scholarly journals Molybdenum Trioxide: Efficient Nanosorbent for Removal of Methylene Blue Dye from Aqueous Solutions

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2295 ◽  
Author(s):  
Souad Rakass ◽  
Hicham Oudghiri Hassani ◽  
Mostafa Abboudi ◽  
Fethi Kooli ◽  
Ahmed Mohmoud ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Removal Efficiency ◽  
Molybdenum Trioxide ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
Removal Capacity ◽  
Pseudo Second Order

Nano Molybdenum trioxide (α-MoO3) was synthesized in an easy and efficient approach. The removal of methylene blue (MB) in aqueous solutions was studied using this material. The effects of various experimental parameters, for example contact time, pH, temperature and initial MB concentration on removal capacity were explored. The removal of MB was significantly affected by pH and temperature and higher values resulted in increase of removal capacity of MB. The removal efficiency of Methylene blue was 100% at pH = 11 for initial dye concentrations lower than 150 ppm, with a maximum removal capacity of 152 mg/g of MB as gathered from Langmuir model. By comparing the kinetic models (pseudo first-order, pseudo second-order and intraparticle diffusion model) at various conditions, it has been found that the pseudo second-order kinetic model correlates with the experimental data well. The thermodynamic study indicated that the removal was endothermic, spontaneous and favorable. The thermal regeneration studies indicated that the removal efficiency (99%) was maintained after four cycles of use. Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM) confirmed the presence of the MB dye on the α-MoO3 nanoparticles after adsorption and regeneration. The α-MoO3 nanosorbent showed excellent removal efficiency before and after regeneration, suggesting that it can be used as a promising adsorbent for removing Methylene blue dye from wastewater.

scholarly journals Methylene Blue Dye Removal from Aqueous Media Using Activated Carbon Prepared by Lotus Leaves: Kinetic, Equilibrium and Thermodynamic Study

2021 ◽  
Vol 68 (2) ◽  
pp. 363-373
Author(s):  
Roya Salahshour ◽  
Mehdi Shanbedi ◽  
Hossein Esmaeili
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Sorption Process ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Lotus Leaves

In the present work, methylene blue was eliminated from aqueous solution using activated carbon prepared by lotus leaves. To perform the experiments, batch method was applied. Also, several analyses such as SEM, FTIR, EDAX and BET were done to determine the surface properties of the activated carbon. The results showed that the maximum sorption efficiency of 97.59% was obtained in initial dye concentration of 10 mg/L, pH of 9, adsorbent dosage of 4 g/L, temperature of 25 °C, contact time of 60 min and mixture speed of 400 rpm. Furthermore, the maximum adsorption capacity was determined 80 mg/g, which was a significant value. The experimental data was analyzed using pseudo-first order, pseudo-second order and intra-particle diffusion kinetic models, which the results showed that the pseudo-second order kinetic model could better describe the kinetic behavior of the sorption process. Also, the constant rate of the pseudo-second order kinetic model was obtained in the range of 0.0218–0.0345 g/mg.min. Moreover, the adsorption equilibrium was well described using Freundlich isotherm model. Furthermore, the thermodynamic studies indicated that the sorption process of methylene blue dye using the activated carbon was spontaneous and exothermic.

scholarly journals Adsorption of methylene blue from aqueous solutions by pyrolusite ore

2018 ◽  
Vol 18 (44) ◽  
pp. 5-11 ◽  
Author(s):  
Nizamettin Demirkıran ◽  
G D Turhan Özdemir ◽  
M Saraç ◽  
M Dardağan
Keyword(s):  
Methylene Blue ◽  
Particle Size ◽  
Contact Time ◽  
Average Particle Size ◽  
Dye Adsorption ◽  
Blue Dye ◽  
Average Particle ◽  
Order Kinetic ◽  
Adsorbent Dosage ◽  
Initial Ph

In this study, the adsorption of methylene blue dye was examined by using pyrolusite ore as a low-cost alternative adsorbent source. Pyrolusite, which contains mainly MnO2, is a manganese ore. The effects of the initial concentration of dye, contact time, initial pH of solution, adsorbent dosage, stirring speed of solution, and average particle size of adsorbent on the adsorption of methylene blue were studied. It was found that the percentage of the adsorbed dye increased with increasing the amount of pyrolusite. While the initial dye concentration, initial pH, contact time, stirring speed, particle size, and adsorbent dosage were 25 ppm, 6, 90 min, 250 rpm, 63 µm, and 12 g/l, respectively, the efficiency of dye adsorption on pyrolusite ore was 99%. The isotherm and kinetic studies relating to this adsorption process were also made. It was found that the equilibrium data followed the Langmuir isotherm model while the kinetic of process could be described by the pseudo-second order kinetic model.

Biosorption of Cr(VI) from Aqueous Solution by Aspergillus Niger

2011 ◽  
Vol 236-238 ◽  
pp. 155-158
Author(s):  
Li Fang Zhang ◽  
Shu Juan Dai ◽  
Ying Ying Chen
Keyword(s):  
Aqueous Solution ◽  
Aspergillus Niger ◽  
Contact Time ◽  
Correlation Coefficients ◽  
Second Order ◽  
Order Kinetic ◽  
Chromium Vi ◽  
Biosorption Process ◽  
Initial Ph ◽  
Pseudo Second Order

In this study, Biosorption of hexavalent chromium ions from aqueous solution by using biomass ofAspergillus nigerwas investigated. Different parameters such as initial pH, biosorbent amount, contact time and temperature were explored. The biosorption of Cr (VI) ions was highly pH dependent and the optimum pH for biosorption of Cr (VI) ions was found to be 2.0. Biosorption capacity of Cr (VI) ions decreased with increased biosorbent dosage. The biosorption equilibrium was established in about 120min of contact time. Equilibrium uptake of Cr (VI) ions onto biomass increased from 12.57 mg/g at 20°C to 19.48 mg/g at 40 °C for 20mg/L Cr (VI) ions concentration. The biosorption process followed the pseudo-second order kinetic model and the correlation coefficients from the pseudo-second order model were all higher than 0.997 in all studied temperatures. These results suggest that the biomass ofAspergillus nigeris a promising biosorbent for removal of chromium (VI) ions from the wastewater.

scholarly journals Adsorption removal of methylene blue from aqueous solution on carbon-coated Fe3O4 microspheres functionalized with chloroacetic acid

2018 ◽  
Vol 25 (2) ◽  
pp. 353-361
Author(s):  
Zefei Zhang ◽  
Cholhwan Kim ◽  
Carlos Fernandez ◽  
Manickam Minakshi Sundaram ◽  
Thippeswamy Ramakrishnappa ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Chloroacetic Acid ◽  
Second Order ◽  
Magnetic Microspheres ◽  
Order Kinetic ◽  
Adsorption Model ◽  
Equilibrium Data ◽  
Carbon Coated ◽  
Pseudo Second Order

AbstractWe report the preparation and employability of carbon-coated Fe3O4(Fe3O4/C) microspheres functionalized with chloroacetic acid (CAA) for the removal of methylene blue (MB) in aqueous solution. The prepared magnetic microspheres (Fe3O4/C-CAA) were characterized by the following techniques: X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectrometer, vibrating sample magnetometry, and Brunauer-Emmett-Teller. The characterization results showed that Fe3O4/C microspheres were modified by CAA without any phase change. Fe3O4/C-CAA microspheres have higher adsorption capacity for MB compared to Fe3O4/C microspheres. The Langmuir, Freundlich, and Temkin adsorption models were applied to describe the equilibrium isotherms, and the Langmuir adsorption model fitted well with the equilibrium data. The pseudo-first-order and pseudo-second-order kinetic models were used to describe the kinetics data. However, the pseudo-second-order kinetic model fitted better with the adsorption kinetics data.

scholarly journals Elimination Study of Methylene Blue Dye Using PANI and PANI/SiO2 Composite.

2021 ◽  
Author(s):  
BENSEDIRA Abderrahim ◽  
HADDAOUI Nacerddine ◽  
DOUFNOUNE Rachida ◽  
MEZIANE Ouahiba ◽  
N. S. Labidi
Keyword(s):  
Methylene Blue ◽  
Adsorption Equilibrium ◽  
Dye Adsorption ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Adsorption Models ◽  
First Order ◽  
Adsorption Processes ◽  
Pseudo Second Order

Abstract Conducting Polymeric composites have attracted great attention over the last years because of their potential uses in chemical, electronic and optical devices, and as catalysts as well as in adsorption processes. Chemical synthesis of polyaniline (PANI) and polyaniline-SiO2 composite and their adsorptive performance were reported in the present work. These materials were prepared and evaluated for their methylene blue (MB) dye adsorption characteristics from aqueous solution. Adsorption equilibrium kinetic and thermodynamic experiments of MB onto PANI and PANI/SiO2 were studied. The effects of initial dye concentration, contact time and temperature on the adsorption capacity of PANI/SiO2 for MB have been investigated. The pseudo-first order and pseudo-second order kinetic models were used to describe the kinetic data. It was found that adsorption kinetics followed the pseudo-second order at all of the studied temperatures. The Langmuir, Freundlich and Dubinin Raduschkevich adsorption models were used for the mathematical description and the fit obtained using the Dubinin Raduschkevich isotherm has a medium R2 value.

scholarly journals Determination of the Optimal Condition of Direct Blue Dye. Removal from Aqueous Solution Using Eggshell

2019 ◽  
Vol 70 (4) ◽  
pp. 1108-1113 ◽  
Author(s):  
Rana Abdullah Abbas ◽  
Ahlam Abdul-Rheem Farhan ◽  
Hussam Nadum Abdalraheem Al Ani ◽  
Aurelia Cristina Nechifor
Keyword(s):  
Aqueous Solution ◽  
Dye Removal ◽  
Polynomial Equation ◽  
Second Order ◽  
Blue Dye ◽  
Order Kinetic ◽  
Direct Blue ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Eggshells was used as a natural adsorbent to remove direct blue(DB) dye from aqueous solution and investigating the four factors that affect the adsorption of DB dye ; amount of eggshell rang (0.1 - 1g), initial concentration (10 - 60 mg/L ), time ( 5 - 45 min.) and pH (3 - 11). Central Composition Design with four variables and five levels coupled with response surface method was adopted to get a second order polynomial equation for dye removal percentage as the response, and to obtain the optimum conditions for maximum dye removal percentage ; which reach 84% with optimum point , eggshell (0.835 g) ,time (24min.) , initial dye concentration ( 10 mg/L) , pH (4.2). The most effecting factors on dye removal are pH and initial dye concentration. Langmuir, Freundich model gives good fitting with (R2 ]0.98). The process of adsorption of DB dye on eggshell fitted a pseudo-second order kinetic model.

scholarly journals Cauliflower Leave, an Agricultural Waste Biomass Adsorbent, and Its Application for the Removal of MB Dye from Aqueous Solution: Equilibrium, Kinetics, and Thermodynamic Studies

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Seraj Anwar Ansari ◽  
Fauzia Khan ◽  
Anees Ahmad
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Agricultural Waste ◽  
Second Order ◽  
Batch Adsorption ◽  
Agricultural Crop ◽  
Order Kinetic ◽  
Basic Dye ◽  
Pseudo Second Order

Cauliflower leaf powder (CLP), a biosorbent prepared from seasonal agricultural crop waste material, has been employed as a prospective adsorbent for the removal of a basic dye, methylene blue (MB) from aqueous solution by the batch adsorption method under varying conditions, namely, initial dye concentration, adsorbent dose, solution pH, and temperature. Characterization of the material by FTIR and SEM indicates the presence of functional groups and rough coarse surface suitable for the adsorption of methylene blue over it. Efforts were made to fit the isotherm data using Langmuir, Freundlich, and Temkin equation. The experimental data were best described by Freundlich isotherm model, with an adsorption capacity of 149.22 mg/g at room temperature. To evaluate the rate of methylene blue adsorption onto CLP, pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were employed. The experimental data were best described by the pseudo-second-order kinetic model. Evaluation of thermodynamic parameters such as changes in enthalpy, entropy, and Gibbs’ free energy showed the feasible, spontaneous, and exothermic nature of the adsorption process. On the basis of experimental results obtained, it may be concluded that the CLP prepared from agricultural waste has considerable potential as low-cost adsorbent in wastewater treatment for the removal of basic dye, MB.

scholarly journals Removal of Methylene Blue Dye From Aqueous Solution Using PDADMAC Modified ZSM-5 Zeolite as a Novel Adsorbent 

2021 ◽  
Author(s):  
Sabarish Radoor ◽  
Jasila Karayil ◽  
Aswathy Jayakumar ◽  
Jyotishkumar Parameswaranpillai ◽  
Suchart Siengchin
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Contact Time ◽  
Adsorption Process ◽  
Nitrogen Adsorption ◽  
Second Order ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Pseudo Second Order

Abstract In the present work, we modified ZSM-5 zeolite using a bio polymer poly (diallyl dimethyl ammonium chloride) and employed it for the removal of cationic dye, methylene blue from aqueous solution. The chemical and physical properties of the modified ZSM-5 zeolite were investigated using XRD, FTIR, SEM, TEM, nitrogen adsorption, TGA and 27Al NMR. Modified ZSM-5 zeolite possesses high surface area and pore diameter which was confirmed from SEM, TEM and nitrogen adsorption analysis. Adsorption of methylene blue on zeolite was investigated by batch adsorption technique. The effect of different parameters such as zeolite dosage, initial methylene blue concentration, temperature, pH and contact time on the adsorption process was discussed. Maximum adsorption capacity (4.31 mg/g) was achieved using 0.1g of modified ZSM-5 zeolite at the optimum conditions (initial dye concentration: 10 mg/L, pH: 10, temperature:30oC and contact time: 300 min). The experimental data were fitted into Langmuir and Freundlich models and the results indicate that the adsorption process followed Freundlich isotherm. Kinetic data were investigated using pseudo-first-order and pseudo-second-order models. Kinetic analysis indicates that pseudo-second-order model is more suitable to describe adsorption of MB on modified ZSM-5 zeolite. The reusability test suggests that the adsorbent could be reused at least six times without significant loss in removal efficiency.

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