Equilibrium and Isotherm Studies on the Removal of Basic Textile Dye from Aqueous Solutions Using Kigelia africana Biosorbent

2018 ◽  
Vol 877 ◽  
pp. 26-32
Author(s):  
Bhargavi Gunturu ◽  
Geethalakshmi Ramakrishnan ◽  
Renganathan Sahadevan
Keyword(s):  
Methylene Blue ◽  
Chemical Interaction ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Dye Uptake ◽  
Adsorption Parameters ◽  
Adsorbent Dosage ◽  
Before And After

Removal of a basic textile dye Methylene Blue from an aqueous solution was evaluated using biosorbent derived from Kigelia africana in a batch system. The influence of adsorption parameters such as adsorbent dosage (0.10-0.50g), PH (2-12) and initial dye concentration (0.3 to 0.11 g/L) on the adsorption process was studied. It was noticed that with increase in adsorbent dosage, the uptake capacity was decreased. Dye uptake was increased by changing the PH up to 8, further increase in PH caused reduced uptake. It was observed that, dye uptake by the adsorbent increased linearly with that of initial dye concentration. Equilibrium isotherm for the adsorption of methylene blue on to adsorbent was studied through Langmuir and Freundlich isotherm models. The data best fit with Freundlich model. Maximum adsorption capacity (Q ̊) was found to be 119.05mg/g. SEM and FTIR analyses of the adsorbent was performed before and after the adsorption, suggest that adsorption of the dye was through chemical interaction of the functional groups on the surface of the adsorbent. From the experimental results, it was inferred that biosorbent derived from Kigelia africana can be a potential alternate to activated carbon for textile dyes removal.

Biosorption of Basic Textile Dye from Aqueous Solution Using Pongamia pinnata as Adsorbent

2018 ◽  
Vol 877 ◽  
pp. 13-19
Author(s):  
Bhargavi Gunturu ◽  
Geethalakshmi Ramakrishnan ◽  
Renganathan Sahadevan
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Low Cost ◽  
Mass Transfer Rate ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Dye Uptake ◽  
Adsorption Parameters

In the present study, the efficiency of biosorbent derived form Pongamiapinata to remove a basic textile dye Methylene Blue from an aqueous solution was evaluated in batch system. The influence of adsorption parameters such as biosorbent dosage (0.2-1.0g/L), PH (2-10) and initial dye concentration (30-110 mg/L) on the biosorption process was studied. It was noticed that adsorbent dosage has negative effect on dye uptake, could be due to reduced mass transfer rate of dye on to adsorbent. High equilibrium uptake was observed at PH 8. However, initial dye concentration has shown linear relationship with dye uptake. As the dye concentration increases, the number of dye molecules available to be adsorbed on to adsorbent surface increases. Equilibrium isotherms for the adsorption of methylene blue was analyzed through Langmuir and Freundlich isotherm models. The data best fit with Freundlich model than Langmuir isotherm model, suggesting the adsorption was by multilayer mechanism. Maximum adsorption capacity (Q ̊) was found to be 40.49mg/g. It can be concluded from the study that the adsorbent derived from P.pinnata can be a potential low cost competent of activated carbon for textile dyes removal.

scholarly journals A Biosorption of Mercury from Wastewater Using Isolated Aspergillus Sp. Modified 1,10-Phenanthroline: Hill Isotherm Model

2017 ◽  
Vol 5 (4) ◽  
pp. 288 ◽  
Author(s):  
Shameran J. Salih ◽  
Sewgil S. Anwer ◽  
Rezhna H. Faraj
Keyword(s):  
Process Design ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Dead Cell ◽  
Adsorption Parameters ◽  
Hill Model ◽  
Equilibrium Data ◽  
Aspergillus Sp ◽  
Langmuir And Freundlich Models

Equilibrium biosorption of mercury (II) onto new developed biosorbent (1,10-phenanthroline-graft- cell/Filamentous fungi) in both free, immobilized and dead cell were investigated. The product was characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). In this work several isotherm models applied to predict the process design for the adsorption system. Hill, Sips, Langmuir and Freundlich utilized to determine the adsorption parameters, the equilibrium data fitted well to Hill and Sips isotherm models followed by Langmuir. Meanwhile, the maximum adsorption capacity proposed by Hill model was 78.67(mg/g) and Sips 78.42(mg/g) were lower than Langmuir models which was 85.16(mg/g). In other hand, the equilibrium data almost fitted to the Freundlich isotherm supporting the postulation of the heterogeneous shape of biosorption to certain range. Hence, On the bases of Langmuir model the biosorption of Hg2+ onto 1,10-phenanthroline-graft- cell/Filamentous was in the favourable area and that confirmed by calculating the separation factor (RL< 1). Nevertheless, new isotherm (Eq. 4) has been derived by the combination of a Langmuir and Freundlich models. The new model agreed well enough (R2 = 0.9863) with the experimental data.

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.

scholarly journals EQUILIBRIUM, KINETIC AND THERMODYNAMIC STUDIES OF ADSORPTION OF METHYLENE BLUE ON ACTIVATED CARBON FROM COCOA POD SHELLS

2021 ◽  
Vol 9 (11) ◽  
pp. 62-72
Author(s):  
Akissi Lydie Chantal Koffi ◽  
◽  
Djamatche Paul Valery Akesse ◽  
Herman Yapi Yapo ◽  
David Leonce Kouadio ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Freundlich Isotherm ◽  
Entropy Change ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Physiochemical Parameters ◽  
Batch Tests ◽  
Pseudo Second Order

The aim of this research is to investigate the feasibility of using activated carbon from cocoa pod shells, waste from agriculture to adsorb methylene blue from aqueous solutions through batch tests. Various physiochemical parameters such as, contact time, initial dye concentration, adsorbent dosage, pH of dye solution and temperature were investigated in a batch-adsorption technique. The process followed the pseudo-second order kinetics model which showed chemical adsorption. Langmuir and Freundlich isotherm models were used to determine adsorption constants. The maximum adsorption capacity at 30°C is 526.31 mg/g. Thermodynamic parameters such as enthalpy change (∆Hº), free energy change (∆Gº) and entropy change (∆Sº) were studied, and the adsorption process of BM was found to be exothermic and spontaneous.

scholarly journals Process Optimization and Adsorptive Mechanism for Reactive Blue 19 Dye by Magnetic Crosslinked Chitosan/MgO/Fe3O4 Biocomposite

2021 ◽  
Author(s):  
Ali H. Jawad ◽  
Rangabhashiyam S ◽  
Ahmed Saud Abdulhameed ◽  
Syed Shatir A. Syed-Hassan ◽  
Zeid A. ALOthman ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Freundlich Isotherm ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Adsorption Parameters ◽  
Solution Ph ◽  
Equilibrium Study ◽  
Reactive Blue 19 ◽  
Pseudo Second Order ◽  
Adsorptive Mechanism

Abstract A new biocomposite magnetic crosslinked glutaraldehyde-chitosan/MgO/Fe3O4 (CTS-GL/MgO/Fe3O4) adsorbent was prepared and applied for the removal of reactive blue 19 (RB 19) synthetic textile dye. The prepared CTS-GL/MgO/Fe3O4 was subjected to the several instrumental characterizations such as XRD, FTIR, SEM-EDX, pH-potentiometric titration, and pHpzc analyses. The influence of the input adsorption parameters such as A: CTS-GL/MgO/Fe3O4 dosage, B: initial solution pH, C: process temperature, and D: contact time on RB 19 removal efficiency was statistically optimized using Box-Behnken design (BBD). The analysis of variance (ANOVA) indicates the presence of five significant statistical interactions between input adsorption parameters i.e. (AB, AC, AD, BC, and BD). The adsorption kinetic and equilibrium study reveals a good to the pseudo-second-order model, and multilayer adsorption as proven by Freundlich isotherm model, respectively. The maximum adsorption capacity of CTS-GL/MgO/Fe3O4 towards RB19 was found to be 193.2 mg/g at 45 ºC. This work highlights the development of feasible and recoverable magnetic biocompsite adsorbent with desirable adsorption capacity towards textile dyes with good separation ability by using an external magnetic field.

scholarly journals Removal of Methyl Violet 2B from Aqueous Solution Using Casuarina equisetifolia Needle

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Muhammad Khairud Dahri ◽  
Muhammad Raziq Rahimi Kooh ◽  
Linda B. L. Lim
Keyword(s):  
Experimental Data ◽  
Contact Time ◽  
Methyl Violet ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Casuarina Equisetifolia ◽  
Dye Pollutants ◽  
Methyl Violet 2B ◽  
Before And After

One of the major contaminants of water bodies is dye pollutants that come from textile, paper, and leather industries. In this study, Casuarina equisetifolia needle (CEN) is used to remove methyl violet 2B (MV) from aqueous solutions. Batch experiments were done to investigate the contact time, effect of pH, initial dye concentrations, and temperature. Langmuir and Freundlich isotherm models were used to describe the interaction between the adsorbate and adsorbent. The sorption mechanism was described using Lagergren 1st order, pseudo 2nd order, and Weber-Morris intraparticle diffusion models. FTIR spectroscopy was used to analyze the functional groups of CEN before and after sorption with MV. Optimal conditions were found to be at room temperature with 2 h contact time and no pH adjustment was needed. Experimental data was best fitted onto Langmuir model with maximum adsorption capacity of 164.99 mg/g, while pseudo 2nd order best described the experimental data for the kinetics study. Thermodynamic parameters such as change in Gibbs free energy (), enthalpy (), and entropy () were also investigated.

scholarly journals Phosphorus and nitrogen co-doped carbon derived from Cigarette Filter for adsorption of methylene blue dye from aqueous solution

2021 ◽  
Author(s):  
Samantha Macchi ◽  
Zane Alsebai ◽  
Fumiya Watanabe ◽  
Arooba Ilyas ◽  
Shiraz Atif ◽  
...  
Keyword(s):  
Water Pollution ◽  
Methylene Blue ◽  
Adsorption Capacity ◽  
Blue Dye ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Textile Dye ◽  
Adsorption Parameters ◽  
Cigarette Filter ◽  
Co Doped

Abstract Global access to sanitary water is of utmost importance to human health. Presently, textile dye water pollution and cigarette pollution are both plaguing the environment. Herein, waste cigarette filters are converted into useful carbon-based adsorbent materials via a facile, microwave-assisted carbonization procedure. The cigarette filters are co-doped with phosphorus and nitrogen using ammonium polyphosphate to enhance their surface characteristics and adsorbent capability. The adsorbents are characterized physically to examine their surface area, elemental composition, and surface charge properties. Batch adsorption experiments were performed to determine the maximum adsorption capacity of the adsorbents. Additionally, the effects of various adsorption parameters— temperature, adsorbent dosage, pH, and time—on adsorption process were examined. The doped adsorbent showed a maximum adsorption capacity of 303.3 mg g− 1 respectively, which is three times that of the methylene blue adsorption capacity of commercially available activated carbon (~ 100 mg g− 1). Thus, the phosphorus and nitrogen co-doped carbonized waste cigarette filter adsorbent shows a profound potential as a sustainable solution to combat textile dye water pollution and cigarette filter pollution simultaneously, due to its low cost, simple preparation, and versatility in application.

scholarly journals Methylene blue removal using prepared activated carbon from grape wood wastes: adsorption process analysis and modeling

2021 ◽  
Author(s):  
Seyyed Alireza Mousavi ◽  
Davood Shahbazi ◽  
Arezoo Mahmoudi ◽  
Parastoo Darvishi
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Process Analysis ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Water And Wastewater Treatment ◽  
Adsorbent Dosage ◽  
Initial Ph ◽  
Pseudo Second Order

Abstract An adsorption study has been conducted for activated carbon obtained from grape wood wastes to assess their capability to remove methylene blue (MB) from the aqueous solutions. The properties of prepared activated carbon were characterized using FTIR, BET and SEM analyses. The effects of independent variables such as initial concentration of MB (100–500 mg L−1), initial pH of solution (3–11), adsorbent dosage (0.25–12.25 g L−1) and contact time (10–90 min) on the MB adsorption have been optimized using response surface methodology. The highest MB removal efficiency was 98% when pH, MB and adsorbent dosage were 11, 100 mg L−1 and 12.25 g L−1, respectively. The experimental data have been tested using Langmuir and Freundlich isotherm models, and the achieved data were fully fitted with the Langmuir model (R2 = 0.99), which indicates the monolayer adsorption. The adsorption kinetics well followed by the pseudo-second-order model with R2 of 0.99. This prepared activated carbon as a low-cost and eco-friendly adsorbent can be used widely for water and wastewater treatment.

Biosorption of Cadmium onto Pseudomonas fluorescens: Application of Isotherm and Kinetic Models

2010 ◽  
Vol 171-172 ◽  
pp. 49-52 ◽  
Author(s):  
Chang Li Yu ◽  
Zhi Peng Lu ◽  
Fa Zhi Ge ◽  
Er Li Zhao
Keyword(s):  
Pseudomonas Fluorescens ◽  
Functional Groups ◽  
Metal Ion ◽  
Freundlich Isotherm ◽  
Industrial Effluents ◽  
Rate Equations ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Kinetics Of Adsorption ◽  
Isotherm And Kinetic Models

The present study was undertaken to evaluate the feasibility of Pseudomonas fluorescens biomass for the removal of cadmium ions from aqueous solutions. Batch experiments were performed to study the adsorption of cadmium on pH, Pseudomonas fluorescens biomass adsorbent with respect to initial Cd(II) concentration, contact time and biomass dose. The experimental data were modeled by Langmuir and Freundlich isotherm models. Langmuir model resulted in the best fit of the adsorption data. The maximum adsorption capacity for Cd(II) was 66.25 mg/g (pH 5.0 and 5 g/L biomass dose). Kinetics of adsorption followed second-order rate equations. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution. The results of the present study suggest that Pseudomonas fluorescens biomass can be used beneficially in treating industrial effluents containing heavy metal ions.

scholarly journals Preparation and Characterization of Cationized Cellulose for the Removal of Anionic Dyes

2001 ◽  
Vol 19 (3) ◽  
pp. 197-210 ◽  
Author(s):  
A. Hashem ◽  
Reda M. El-Shishtawy
Keyword(s):  
Adsorption Capacity ◽  
Freundlich Isotherm ◽  
Structural Features ◽  
Isotherm Models ◽  
Acid Orange 7 ◽  
Anionic Dyes ◽  
Adsorption Parameters ◽  
Direct Blue ◽  
Equilibrium Data

The factors influencing the cationization of microcrystalline cellulose with 3-chloro-2-hydroxypropyl triethylammonium chloride in the presence of NaOH were investigated. The course of the reaction was followed by estimating the nitrogen content of the cationized product while its structural features were confirmed by IR analysis. The ability of cationized cellulose to adsorb anionic dyes, viz. Acid Orange 7, Direct Blue 75 and Direct Violet 31, was investigated at 25°C and 50°C. The equilibrium data obtained were fitted by the Langmuir and Freundlich isotherm models, allowing the corresponding adsorption parameters to be determined. The results showed that the adsorption capacity was dependent on the adsorbent, temperature, the nature of the dye and (to some extent) on van der Waals and hydrogen bonding. Cationized cellulose exhibited a much better adsorption capacity towards anionic dyes than cellulose.

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