scholarly journals Successful Application of Eucalyptus Camdulensis Biochar in the Batch Adsorption of Crystal Violet and Methylene Blue Dyes from Aqueous Solution

2021 ◽  
Vol 13 (7) ◽  
pp. 3600
Author(s):  
Muhammad Tahir Amin ◽  
Abdulrahman Ali Alazba ◽  
Muhammad Shafiq
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Adsorption Capacity ◽  
Crystal Violet ◽  
Kinetic Models ◽  
Freundlich Isotherm ◽  
Batch Adsorption ◽  
Free Energy Of Adsorption ◽  
Solution Ph ◽  
Percentage Removal

Eucalyptus camdulensis biochar (Ec-bio) was used to adsorb crystal violet (CV) and methylene blue (MB) dyes, which was optimized and further evaluated using different isotherm and kinetic models. Microscopy and spectroscopy techniques showed the interactions of the dyes with the surface functional groups of the Ec-bio, resulting in the removal of the dyes from aqueous solution. Both dyes were immediately uptaken, with equilibrium reached in 60 min, with a higher sorption efficiency of CV compared to MB. Thermodynamic parameters showed endothermic adsorption and the nonspontaneous adsorption of both dyes onto the Ec-bio. Both the adsorption capacity and percentage removal increased with the increasing solution pH from 2.0 to 4.0 and to 10 for CV and MB. An increase in adsorption capacity was observed upon increasing the initial concentrations, with a corresponding decrease in the percentage removal. The pseudo-second-order (PSO) and Elovich kinetic models (nonlinear approach) were a good fit to the data of both dyes, confirming a chemisorptive adsorption process. The Langmuir isotherm fitted well to the CV data, supporting its monolayer adsorption onto the Ec-bio, while the Freundlich isotherm was a good fit to the MB dye data, suggesting the surface heterogeneity of the Ec-bio. The Dubinin–Radushkevich isotherm was a good fit to the adsorption CV data compared with the MB dye, suggesting the physisorption of both dyes onto the Ec-bio due to its mean free energy of adsorption of <8 kJ mol−1.

scholarly journals Adsorption of Methylene Blue from aqueous solution using Senegal River Typha australis

2020 ◽  
Vol 10 (1) ◽  
pp. 22-32
Author(s):  
Abdoulaye Demba N'diaye ◽  
Youcef Aoulad El Hadj Ali ◽  
Mohamed Abdallahi Bollahi ◽  
Mostafa Stitou ◽  
Mohamed Kankou ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Low Cost ◽  
Activation Parameters ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Senegal River ◽  
Typha Australis ◽  
Equilibrium Data

In this work, batch adsorption experiments were carried out for the removal of Methylene Blue (MB) from aqueous solutions using Typha australis leaf as a low cost adsorbent. The effects of some variables governing the efficiency of the process such as adsorbent mass, pH, ionic strength, contact time and temperature were investigated. The adsorption kinetic data were analyzed using the Pseudo First Order (PFO) and Pseudo Second Order (PSO) models. The experimental equilibrium data were analyzed using Langmuir and Freundlich isotherm models. The results show that the PSO model is the best for describing the adsorption of MB by Typha australis for all initial MB concentrations. The equilibrium data fitted well with the Langmuir model with the monolayer adsorption capacity for MB-Typha australis leaf system was of 103.12 mg g-1. The values of activation parameters such as free energy (ΔG°), enthalpy (ΔH°) and entropy (ΔS°) were also determined as - 4.44 kJ mol−1, 55.13 kJ mol−1 and 203.21 J mol−1 K−1, respectively. The thermodynamics parameters of MB-Typha australis system indicate spontaneous and endothermic process. These results indicate that the Typha australis leaf can be feasibly employed for the eradication of MB from aqueous solution.

scholarly journals Bioadsorption of Basic Blue Dye from Aqueous Solution onto Raw and Modified Waste Ash as Economical Alternative Bioadsorbent

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Adugna Nigatu Alene ◽  
Gietu Yirga Abate ◽  
Adere Tarekegne Habte
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Freundlich Isotherm ◽  
Industrial Effluents ◽  
Point Of Zero Charge ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Adsorption Method ◽  
Living Organisms ◽  
Economical Alternative

Background. Dyes are one of the most hazardous materials in industrial effluents which can cause several health problems in living organisms. The removal of dye from colored effluents has attracted increasing attention in the last decade. In this study, raw, beneficiated, and activated waste ash were evaluated as adsorbents for removal of methylene blue (MB) from aqueous solution by the batch adsorption method. Comprehensive characterization studies were carried out on each bioadsorbent, such as proximate analyses, bulk density, specific surface area, point of zero charge, pH, and Fourier transform infrared (FTIR) spectroscopy (which shows functional groups on adsorbents surface). The effects of pH, adsorbent dosage, initial dye concentration, and contact time were determined in order to know the optimum condition and adsorption potential of the adsorbents. The methylene blue (MB) removal efficiency of raw, beneficiated, and activated bioadsorbents from aqueous solutions was found to be 95.212%, 89.172%, and 84.504%, respectively. It is reported that adsorption efficiency of MB on each adsorbent was quite different due to electrostatic and dispersion interaction between the dye molecules and the surface property of the adsorbents. The obtained results were well fitted with the Freundlich isotherm model, and the adsorption process follows the pseudo-second-order kinetics model for all adsorbents. In fact, the results showed that raw, beneficiated, and activated waste ash bioadsorbents could be employed as effective and economical alternative material in the near future.

Parametric and adsorption kinetic studies of methylene blue removal from simulated textile water using durian (Durio zibethinus murray) skin

2015 ◽  
Vol 72 (6) ◽  
pp. 896-907 ◽  
Author(s):  
S. M. Anisuzzaman ◽  
Collin G. Joseph ◽  
D. Krishnaiah ◽  
A. Bono ◽  
L. C. Ooi
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Dye Adsorption ◽  
Freundlich Isotherm ◽  
Kinetic Studies ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Durio Zibethinus

In this study, durian (Durio zibethinus Murray) skin was examined for its ability to remove methylene blue (MB) dye from simulated textile wastewater. Adsorption equilibrium and kinetics of MB removal from aqueous solutions at different parametric conditions such as different initial concentrations (2–10 mg/L), biosorbent dosages (0.3–0.7 g) and pH solution (4–9) onto durian skin were studied using batch adsorption. The amount of MB adsorbed increased from 3.45 to 17.31 mg/g with the increase in initial concentration of MB dye; whereas biosorbent dosage increased from 1.08 to 2.47 mg/g. Maximum dye adsorption capacity of the durian skin was found to increase from 3.78 to 6.40 mg/g, with increasing solution pH. Equilibrium isotherm data were analyzed according to Langmuir and Freundlich isotherm models. The sorption equilibrium was best described by the Freundlich isotherm model with maximum adsorption capacity of 7.23 mg/g and this was due to the heterogeneous nature of the durian skin surface. Kinetic studies indicated that the sorption of MB dye tended to follow the pseudo second-order kinetic model with promising correlation of 0.9836 &lt; R2 &lt; 0.9918.

Adsorption of Methylene Blue from Aqueous Solution onto Peracetic Acid-Modified Loosestrife Powder - A New Adsorbent

2010 ◽  
Vol 152-153 ◽  
pp. 691-696 ◽  
Author(s):  
Hui Jun Xie ◽  
Wei Tan ◽  
Jian Zhang ◽  
Hong Bin Niu
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Peracetic Acid ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Manganese Acetate ◽  
Batch Adsorption ◽  
Titration Method ◽  
Spectra Analysis ◽  
Boehm Titration

Modified loosestrife powder (MLP), as a new adsorbent, was prepared from dry loosestrife powder by oxidization treatment using peracetic acid with tetrahydrate manganese acetate as catalyst. IR spectra analysis and Boehm titration method were employed to explore MLP’ surface acidic functional groups. Batch adsorption experiments were carried out for the removal of Methylene Blue (MB) from aqueous solution by MLP. Equilibrium experimental data were better represented by Freundlich isotherm using linear methods. Thermodynamic parameters such as G, H and S were also calculated. The results showed that the adsorption of MB onto MLP was efficient and could serve as a promising low-cost adsorbent.

Modification of granular activated carbon using low molecular weight polymer for enhanced removal of Cu2 +  from aqueous solution

2007 ◽  
Vol 56 (9) ◽  
pp. 95-101 ◽  
Author(s):  
C.Y. Yin ◽  
M.K. Aroua ◽  
W.M.A.W. Daud
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Freundlich Isotherm ◽  
Initial Solution ◽  
Batch Adsorption ◽  
Solution Ph ◽  
Molecular Weight Polymer ◽  
Adsorption Capacities ◽  
Surface Impregnation ◽  
Better Than

Palm shell activated carbon was modified via surface impregnation with polyethyleneimine (PEI) to enhance removal of Cu2 +  from aqueous solution in this study. The effect of PEI modification on batch adsorption of Cu2 +  as well as the equilibrium behavior of adsorption of metal ions on activated carbon were investigated. PEI modification clearly increased the Cu2 +  adsorption capacities by 68% and 75.86% for initial solution pH of 3 and 5 respectively. The adsorption data of Cu2 +  on both virgin and PEI-modified AC for both initial solution pH of 3 and 5 fitted the Langmuir and Redlich–Peterson isotherms considerably better than the Freundlich isotherm.

scholarly journals Effectiveness of Carboxymethyl Cellulose for the Removal of Methylene Blue from Aqueous Solution

2013 ◽  
Vol 61 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Hosne Ara Begum ◽  
Mohammad Khalid Bin Mahbub
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Adsorption Capacity ◽  
Sugarcane Bagasse ◽  
Carboxymethyl Cellulose ◽  
Batch Adsorption ◽  
Acidic Ph ◽  
Ft Ir ◽  
Adsorptive Properties ◽  
Mb Adsorption

The adsorptive properties of carboxymethyl cellulose (CMC) prepared from sugarcane bagasse (SB) for the removal of methylene blue (MB) from aqueous solution was investigated. Two batches of CMC, CTSB-CMC-B1 and CTSB-CMC-B2, were prepared from chlorite treated sugarcane bagasse (CTSB). The prepared CMCs were characterized by FT-IR spectral analysis. Degree of substitution (DS) value of prepared CMCs was estimated. Batch adsorption experiments show that the adsorption of MB on CMCs reaches equilibrium within 30 minutes. The MB adsorption capacity of CTSB-CMC-B1 and CTSB-CMC-B2 were found to be 652.0 and 369.0 mg g?1, respectively. CMC with the higher DS value (CTSBCMC- B1) shows higher adsorption capacity than the CMC having lower DS value (CTSB-CMC-B2). The uptake of MB was minimum at pH 2 and gradually increases with the increase of pH. From the desorption studies, it was found that large amount of MB was released in strong acidic (pH 3.0) conditions. DOI: http://dx.doi.org/10.3329/dujs.v61i2.17069 Dhaka Univ. J. Sci. 61(2): 193-198, 2013 (July)

scholarly journals Adsorption Phenomenon of Arundinaria alpina Stem-Based Activated Carbon for the Removal of Lead from Aqueous Solution

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yosef Asrat ◽  
Amare Tiruneh Adugna ◽  
M. Kamaraj ◽  
Surafel Mustefa Beyan
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Batch Adsorption ◽  
X Ray Diffraction ◽  
Solution Ph ◽  
Synthetic Solution ◽  
Temperature Ranges

In this study, activated carbon was prepared from locally available bamboo (Arundinaria alpina) in Ethiopia to remove Pb (II) from wastewater. Various effects such as solution pH, initial Pb (II) ion concentration, and adsorbent dose were investigated and accordingly discussed, and the process was carried out on a batch adsorption base. Dried Arundinaria alpina stem was activated with potassium hydroxide (KOH) at a ratio of 1 : 1 (w/v) and carbonized in a furnace at three temperature ranges (500oC, 600oC, and 700oC) for 3 h. The physicochemical of Arundinaria alpina stem activated carbon (AASAC) was investigated and the resultant of 500oC treatment setup is found as ideal in terms of yield (40.6 g), ash (3.5%), porosity (0.704%), moisture (7.7%), and iodine number (814.69 mg/g). The further characterization of ideal AASAC was carried out by scanning electron microscopy (SEM), X-ray diffraction (XRD) spectroscopy, and Fourier transform infra-red (FTIR). The optimum Pb (II) removal efficiency of AASAC was 99.8% at pH 5 in a synthetic solution, but the efficiency declined to 60.42% on real industrial wastewater due to the presence of its mixed pollutant nature. Freundlich isotherm model is more favorable than Langmuir with a high correlation coefficient (R2-0.9496) for Pb (II) adsorption. The study revealed that AASAC has a potential adsorption efficiency to remove the Pb (II) ion from the aqueous solution which is also recommended as an adsorbent for real industry wastewater treatment.

Characterization and Utilization of Corncob Lignocellulose for Adsorptive Removal of Basic Dyes from Aqueous Solution

2011 ◽  
Vol 236-238 ◽  
pp. 125-129
Author(s):  
Run Fang ◽  
Xian Su Cheng
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Crystal Violet ◽  
Dye Uptake ◽  
Batch Experiments ◽  
Solution Ph ◽  
Adsorptive Removal ◽  
Decolorization Efficiency ◽  
Basic Dyes ◽  
Uptake Process

This study evaluated the potential application of a biomass material, corncob lignocellulose (CL), as a novel adsorbent for the removal of basic dyes from aqueous solutions. The adsorption behavior and mechanism of basic dyes on CL was investigated via batch experiments. Both adsorption and desorption studies showed that the attachment of basic dyes onto CL was ascribed to a combined interaction involving electrostatic attraction and chemisorption. The decolorization efficiency of CL increased with increasing solution pH and temperature. Thermodynamic parameters demonstrated the spontaneous and endothermic nature of the adsorption. The dye uptake process was best described by the Langmuir isotherm. The adsorption capacity of CL for Methylene blue, Crystal Violet and Malachite Green at 30°C was calculated to be 145.8, 121.8 and 65.7 mg/g, respectively.

Copper contaminated wastewater – An evaluation of bioremedial options

2016 ◽  
Vol 27 (1) ◽  
pp. 84-95 ◽  
Author(s):  
Geetha Varma V. ◽  
Anil K. Misra
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Metal Ion ◽  
Freundlich Isotherm ◽  
Copper Removal ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Paddy Straw ◽  
Adsorption Phenomenon ◽  
Adsorption Studies

The potential of papaya leaf powder and paddy straw powder for copper(II) removal was evaluated from aqueous solution via column and batch adsorption studies. Batch adsorption studies were performed to determine the contact time effects, biosorbent dosage, pH and initial concentration of metal ion on adsorption capacity. Results showed approximately 90% to 95% of copper removal using both the adsorbents from the solution. As the amount of biosorbent increases, the biosorption capacity also increases. Findings indicate that pH is an important factor for metal ion biosorption and 7.0 is the optimum pH for copper removal. For explaining the mechanism of copper distribution into the solid and liquid phases in batch studies, Freundlich isotherm and Langmuir adsorption isotherm model are used and findings illustrate that adsorption phenomenon is better represented by Freundlich isotherm. Maximum adsorption capacity of copper was calculated as 24.63 mg/g and 37.17 mg/g for papaya powder and for paddy straw powder, respectively, by using Langmuir model. The adsorption phenomenon complies with the pseudo-second-order rate equation. Using packed bed column, the biosorbents’ ability of copper(II) ions removal from aqueous solution was also examined and an S shape profile was obtained for the breakthrough curve. For practical applications, both the adsorbents can be effectively used for wastewater treatment owing to their high capacity of adsorption of heavy metals at very low cost.

scholarly journals Removal of the Hypoglycaemic Drug Gliclazide From Aqueous Solutions by Carbon-Based Magnetic Materials

2021 ◽  
Author(s):  
Ferda Civan Çavuşoğlu
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Correlation Coefficients ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Solution Ph ◽  
Monolayer Adsorption ◽  
Langmuir Isotherm Model ◽  
Carbon Based

Abstract Adsorption of gliclazide from aqueous solutions with carbon-based adsorbents is the aim of this study. For this purpose, magnetic, versatile, and inexpensive magnetic activated carbon (MAC) and magnetic multi-walled carbon nanotube (MMWCNT) adsorbents have been developed. MAC and MMWCNT characterization were analyzed using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Thermogravimetric analysis (TGA) techniques. In order to find the optimum conditions in batch adsorption experiments, the effects of parameters such as adsorbent dose, gliclazide solution pH, contact time, temperature and presence of foreign ions were investigated. Parameters were calculated for adsorption isotherms using Langmuir and Freundlich models. The adsorption studies of MAC and MMWCNT materials with gliclazide were in accordance with the nonlinear Langmuir and Freundlich isotherm models for all temperatures (298, 308, 318 K). The correlation coefficients of the Langmuir isotherm model are slightly higher than the Freundlich model. MAC adsorbent has maximum monolayer adsorption capacity at T=298 K (qmax=101.66 mg/g, R2=0.88) while MMWCNT has maximum monolayer adsorption capacity at T=308 K (qmax=71.59 mg/g, R2=0.90). For MAC and MMWCNT - Gliclazide adsorption systems, pseudo-first and secondorder kinetic models were examined and found to be more appropriate to the pseudo-secondorder kinetic model. The results showed that the MAC and MMWCNT could be could be promising adsorbents for gliclazide removal.

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