scholarly journals Synthesis of composite sorbent for the treatment of aqueous solutions contaminated with methylene blue dye

2020 ◽  
Vol 81 (7) ◽  
pp. 1494-1506
Author(s):  
Maad F. Al Juboury ◽  
Musa H. Alshammari ◽  
Mohammed R. Al-Juhaishi ◽  
Laith A. Naji ◽  
Ayad A. H. Faisal ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Sewage Sludge ◽  
Nitrate Solution ◽  
Permeable Reactive Barrier ◽  
Blue Dye ◽  
Ferric Nitrate ◽  
Maximum Adsorption Capacity ◽  
Composite Sorbent ◽  
Kinetic Measurements ◽  
Waterworks Sludge

Abstract To apply the principles of sustainability, this study aims to prepare the composite sorbent from mixing of solid wastes that resulted from activities of treatment plants for wastewater and water supply. The manufacturing process depends on the mixing of sewage sludge with waterworks sludge at different proportions and the best mixture is modified by ferric nitrate solution. The prepared composite sorbent was evaluated as permeable reactive barrier (PRB) in the capturing of methylene blue (MB) dye presented in the simulated groundwater. Results proved that the suitable mixture of composite sorbent consisting of 0.25 g sewage sludge with 0.75 g waterworks sludge coated with aqueous solution of 2 g of Fe(NO3)2 achieved the maximum sorption capacity. In comparison with Freundlich model, Langmuir expression described the sorption measurements in a well manner; so, the chemisorption is governed by the removal of MB with maximum adsorption capacity reached to 268.98 mg/g. Kinetic measurements could be more representative by pseudo-first-order model and this means that the sorption process is supported by physical forces. Finally, the effects of inlet concentrations and bed thickness on the migration of MB front were simulated in an efficient manner by COMSOL Multiphysics 3.5a package with root mean squared errors not in excess of 0.152.

scholarly journals Study of Kinetics and Adsorption Isotherm of Methylene Blue Dye using Tannin Gel from Ceriops tagal

2020 ◽  
Vol 23 (10) ◽  
pp. 370-376
Author(s):  
Thamrin Azis ◽  
La Ode Ahmad ◽  
Keke Awaliyah ◽  
Laode Abdul Kadir
Keyword(s):  
Methylene Blue ◽  
Adsorption Capacity ◽  
Adsorption Kinetics ◽  
Contact Time ◽  
Adsorption Process ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye ◽  
Ceriops Tagal ◽  
Kinetics Of

Research on the equilibrium and adsorption kinetics of methylene blue dye using tannin gel from the Tingi tree (Ceriops tagal) has been carried out. This study aims to determine the capacity and adsorption kinetics of tannin gel against methylene blue dye. Several parameters, such as the effect of contact time, pH, and methylene blue dye concentration on adsorption, were also studied. Based on the research results, the optimum adsorption process is a contact time of 30 minutes and a pH of 7. The adsorption capacity increased to a concentration of 80 mg/L with a maximum adsorption capacity (qm) of 49.261 mg/g. The adsorption process follows the pseudo-second-order adsorption kinetics model and the Langmuir isotherm model.

scholarly journals Sugarcane Bagasse as an Efficient Biosorbent for Methylene Blue Removal: Kinetics, Isotherms and Thermodynamics

2020 ◽  
Vol 17 (2) ◽  
pp. 526 ◽  
Author(s):  
Thaisa Caroline Andrade Siqueira ◽  
Isabella Zanette da Silva ◽  
Andressa Jenifer Rubio ◽  
Rosângela Bergamasco ◽  
Francielli Gasparotto ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Sugarcane Bagasse ◽  
Adsorption Isotherms ◽  
Low Cost ◽  
Cost Effective ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Effective Option ◽  
Pseudo Second Order ◽  
Isotherms And Thermodynamics

Adsorption in biomass has proven to be a cost-effective option for treatment of wastewater containing dyes and other pollutants, as it is a simple and low cost technique and does not require high initial investments. The present work aimed to study the adsorption of methylene blue dye (MB) using sugarcane bagasse (SCB). The biomass was characterized by scanning electron microscopy (SEM). Adsorption studies were conducted batchwise. Kinetics, adsorption isotherms, and thermodynamics were studied. The results showed that SCB presented a maximum adsorption capacity of 9.41 mg g−1 at 45 °C after 24 h of contact time. Adsorption kinetics data better fitted the pseudo-second order model, indicating a chemical process was involved. The Sips’s three-parameter isotherm model was better for adjusting the data obtained for the adsorption isotherms, indicating a heterogeneous adsorption process. The process showed to be endothermic, spontaneous, and feasible. Therefore, it was concluded that SCB presented as a potential biosorbent material for the treatment of MB-contaminated waters.

scholarly journals Characterization and efficient dye discoloration of Algerian diatomite from Ouled Djilali-Mostaganem

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Amal Touina ◽  
Safia Chernai ◽  
Bouhameur Mansour ◽  
Hafida Hadjar ◽  
Abdelkader Ouakouak ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Low Cost ◽  
Xrd Analysis ◽  
High Mass ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Calcium Carbonates ◽  
X Ray ◽  
Langmuir Isotherm Model ◽  
Adsorption Desorption

AbstractA series of naturally occurring diatomaceous earth samples from Ouled Djilali, Mostaganem (Lower Chelif basin, Algeria northwestern), were investigated, which are characterized by the expansion and evolution during the Messinian age. Four varieties of diatomite were distinguished, characterized, and successfully used to adsorb methylene blue dye in aqueous medium. Several properties and characteristics of diatomite have been outlined using analytical methods such as X-ray fluorescence spectrometry, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption–desorption (BET), and scanning electron microscopy (SEM), as well as other complementary analysis tests. Results showed that silica and calcium carbonates were the main constituents of the diatomite samples (ranging between 32.8 and 61.5% for SiO2; and 13.8–25.9% for CaO), with a slight difference in chemical composition between selected samples. Typical for all diatomite samples, the XRD analysis suggests a high mass quantity of amorphous phase (Opal); high content of crystal phase was also registered. FTIR allowed determining the basic characteristic silica bands regarding diatomite samples. While the BET and SEM investigations revealed that the studied diatomite material has a highly porous structure and was very rich in diatoms. The maximum adsorption capacity of methylene blue that was calculated from the Langmuir isotherm model was 116.59 mg/g (for Ouled Djilali: OD05 sample) at 25 °C and pH 7.0. The diatomite from Mostaganemian (Ouled Djilali) deposit may find promising applications as low-cost adsorbent for dyes removal from water.

scholarly journals Characterization and application of orange peel as an adsorbent for cationic dye removal from aqueous solution

2021 ◽  
Vol 25 ◽  
pp. e16
Author(s):  
Aline Haas ◽  
Eliane Pereira dos Santos
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Adsorption Process ◽  
Solid Medium ◽  
Orange Peel ◽  
Freundlich Isotherm ◽  
Adsorptive Capacity ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye

 With the great generation of colored effluents, several methods for the removal of the color are used, being one of them the method of adsorption in solid medium. In this paper, the in natura orange peel was used as the alternative biomass for the adsorption process of methylene blue, which was characterized by moisture content, pH, apparent density, iodine number, and methylene blue index. To determine the adsorptive capacity of the methylene blue dye, pH 7 was obtained as favorable, the adsorption process showed an adsorption of 82% of the methylene blue dye and a 10 min equilibrium time, where the Freundlich isotherm presented a better adaptation to the adsorption process in orange peel, with its maximum adsorption capacity of 3.9630 mg g-1, for the methylene blue dye. 

scholarly journals Adsorption and Kinetic Study of Methylene Blue dye on New Surface Derived from Copolymer (Melamine – Formaldehyde – Para- methyl Anisole)

2018 ◽  
Vol 12 (1) ◽  
pp. 178-187
Author(s):  
Baghdad Science Journal
Keyword(s):  
Methylene Blue ◽  
Kinetic Parameters ◽  
Kinetic Models ◽  
Exchange Property ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye ◽  
Free Energy Of Adsorption ◽  
Wide Range ◽  
Different Temperatures

A new copolymer (MFA) was prepared from condensation of melamine (M) with p- methyl – anisole (A) in the presence of condensation agent like 37% (w/v) of formaldehyde. The new copolymer was characterized by elemental, IR and HNMR spectra. The chelating ion-exchange property of this polymer was studied for methylene blue dye in aqueous solution in 100-200ppm concentrations. The adsorption study was carried out over a wide range of pH, shaking time and in media of various kinetic parameters models. Thermal parameters like enthalpy, entropy and Gibbs free energy of adsorption process of methylene blue on surface of MFA resin were determined on the basis of kinetic parameters at different temperatures. To describe the equilibrium of adsorption, the Langmuir, Freundlich and Temkin isotherms were used. The Langmuir isotherm correlation (R2=0.987) was the best fitted for experimental data with maximum adsorption capacity of 200 ppm. A higher correlation value of the kinetic's model was observed close to pseudo first order, second order and Temkin kinetic models values of correlation R2 lie in the range (0.983-0.987) in comparing to other kinetic models.

Green Synthesis of Nanostructured Silver Metal Particals and Catalytic Degradation of Toxic Methylene Blue Dye

2020 ◽  
Author(s):  
Jyoti Kedar ◽  
Ajinkya Kasar ◽  
Neha Pardeshi ◽  
Pradhumna Tiwari ◽  
Suyash Bhosale
Keyword(s):  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Silver Nitrate ◽  
Silver Nanoparticle ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Noble Metal Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Uv Visible

Abstract The growth and development of bio-synthesized noble metal nanoparticles have attracted great amount of interest in field of nanotechnology due to their potential use for human benefits. The fungal synthesis of noble metal nanoparticles like silver nanoparticle is a sustainable, eco- friendly and green chemistry approach that amalgamate Mycology, Biotechnology and nanotechnology. Accordingly silver nanoparticles (silver nanoparticles) can be synthesized by physical, chemical and biological methods respectively. The aim of this research is to carry green synthesis of silver nanoparticles (silver nanoparticle) i.e. biological method using aqueous fungal extract of penicillium rubens. The aqueous fungal extract was added to silver nitrate solution where the color of the silver nitrate reaction medium was changed from Pale yellow to brown which indicates reduction of silver ions to silver nanoparticles. Thus synthesized silver nanoparticles were characterized by UV-Visible spectroscopy, which shows characterized peak between 400-420 nm. In order to classify the effective functional molecules responsible for the reduction and stabilization of fungal synthesized silver nanoparticles, the FTIR spectrum was examined. Optimization of production of silver nanoparticles was done by changing parameters such as pH, temperature and concentration of silver nitrate solution and determined by absorbance in UV-Visible spectrophotometer. Thus, it is concluded that the biosynthesis of silver nanoparticles using extracellular fungal filtrate was simple, eco-friendly and robust. Also the dye reduction capabilities of silver nanoparticles were examined. Effective degradation of Methylene blue dye was observed giving 97 % efficiency in 90 minutes of exposure time.

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.

scholarly journals Activated biomass of the green microalga Chlamydomonas variabilis as an efficient biosorbent to remove methylene blue dye from aqueous solutions

Water SA ◽  
2019 ◽  
Vol 45 (1 January) ◽  
Author(s):  
Reda M Moghazy
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Model Fit ◽  
Point Of Zero Charge ◽  
Isotherm Models ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Green Microalga ◽  
Pseudo Second Order ◽  
Activated Biomass

The raw and activated biomass of a green microalga, Chlamydomonas variabilis, were investigated as adsorbents for the removal of methylene blue (MB) dye from aqueous solutions. Chlamydomonas variabilis was isolated and cultivated to obtain a sufficient algal biomass. The collected biomass was first oven-dried and then activated by H2SO4. The results obtained showed that the optimum adsorption of MB occurred over 30 min of contact time at pH 7 and an biosorbent dose of 1.5 and 1.0 g·L−1 of dried biomass and activated biosorbent, respectively. Point of zero charge (pHpzc) was recorded at pH 6.8 and 6.9 for dried and activated biomass, respectively. The activated biomass was a more effective biosorbent than was the dried biomass: At a MB concentration of 82.4 mg·L−1, the minimum removal was greater than 98% using 1 g·L−1 activated biomass with a maximum adsorption capacity (qmax) of 115 mg·g−1, whereas at a MB concentration of 56.4 mg·L−1, the maximum removal did not exceed 80.8% using 1.5 g·L−1 raw biomass with a qmax of 18.3 mg·g−1. Furthermore, the Freundlich and Langmuir isotherm models of adsorption showed a better model fit when using activated biomass than when using raw biomass, with the former yielding R2 values greater than 0.9. The kinetic data suggest that the adsorption of MB follows the pseudo-second-order equation better than the pseudo-first-order one. This study demonstrates that the activated biomass of Chlamydomonas variabilis can be used as an effective biosorbent for the treatment of dye-containing wastewater streams. 

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