THE EFFECT OF ADSORBENT TYPE AND RATIO ON REMOVAL AND ISOTHERM ADSORPTION OF METHYLENE BLUE

THE EFFECT OF ADSORBENT TYPE AND RATIO ON REMOVAL AND ISOTHERM ADSORPTION OF METHYLENE BLUE. Methylene Blue (MB) is one of the dye that are widely used in the textile industry. The wastewater from textile industry that contain MB can reduce the oxygen level in water bodies. This study aims to determine the efficiency of the adsorbent in MB removal and to analyze the isotherm adsorption. The variations conducted in this research was the type of adsorbent and its ratio. The activated carbon that used as adsorbent was fresh betel nut (Cyrtostachys lakka) activated carbon (A), regenerated betel nut activated carbon (B), and coconut shell activated carbon (Cocos nucifera) (C). The type of adsorbent was AB, AC, and BC with ratio of 1:1, 1:2, 1:3, 2:1, and 3:1. The MB concentration was analyzed by using UV-Vis spectrophotometer. Isotherm adsorption was calculated based on Freundlich and Langmuir. The best results showed that the combination of fresh and regenerated betel nuts (AB) with ratio of 3:1 can remove 97.77% of MB. The adsorption process of MB in aqueous solution followed the Langmuir model with regression over 0.99 and adsorption capacity in the range of 2.14 mg/g - 3.53 mg/g.

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Removal of Methylene blue, Escherichia coli and Pseudomonus aeruginosa by Adsorption Process of Activated Carbon Produced from Moringa oleifera Bark

Malaysian Journal of Science Health & Technology ◽

10.33102/mjosht.v7i.105 ◽

2021 ◽

Author(s):

Md. Shahin Azad ◽

Syaza Azhari ◽

Mohd Sukri Hassan

Keyword(s):

Escherichia Coli ◽

Methylene Blue ◽

Activated Carbon ◽

Moringa Oleifera ◽

Adsorption Process ◽

Diffusion Mechanism ◽

Bacterial Load ◽

Batch Adsorption ◽

Maximum Adsorption Capacity ◽

E Coli

The utilization of biopolymer derived from Moringa oleifera bark using ZnCl2 and H2SO4 as activating agents for eliminating Methylene blue, Escherichia coli and Pseudomonas aeruginosa from producing wastewater. In this study, Methylene blue and both bacteria were effectively adsorbed by activated carbon with lowest dosage. The activated carbon was prepared from natural-by product of Moringa oleifera bark by pyrolysis in a furnace at 700°C for 1 h. The characteristics of activated carbon have been determined using Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET), pHzpc (zero point charge), and FTIR spectroscopy. The obtained result were closely fitted with Freundlich isotherm model and adsorption kinetics follow the pseudo-second order model with the highest value of correlation coefficient (R2~1). Adsorption quantity was dose dependent and bacteria were maximum adsorbed using 10 mg of activated carbon as well as 25mg for methylene blue. The maximum adsorption capacity showed within 1 hour. The bacterial load was reduced by 98% for E. coli, 96% for P. aeruginosa as well as methylene blue reduced 94.2% from aqueous solution using batch adsorption methods. Adsorption process controlled by film diffusion mechanism. These result proposed that the activated carbon of Moringa oleifera can be used as a good adsorbent for the removal of Methylene blue, E. coli and P. aeruginosa.

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Biosorption of Methylene Blue from Aqueous Solution by Coconut (Cocos Nucifera) Shell-Derived Activated Carbon-Chitosan Composite

Oriental Journal Of Chemistry ◽

10.13005/ojc/340113 ◽

2018 ◽

Vol 34 (1) ◽

pp. 115-124 ◽

Cited By ~ 3

Author(s):

Precious Caree V. Regunton ◽

Derick Erl P. Sumalapao ◽

Nelson R. Villarante

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Activated Carbon ◽

Cocos Nucifera ◽

Chitosan Composite

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Characterization of Adsorbents Derived from Palm Fiber Waste and its Potential on Methylene Blue Adsorption

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.841.273 ◽

2020 ◽

Vol 841 ◽

pp. 273-277

Author(s):

Ariany Zulkania ◽

Muhammad Iqbal ◽

Syamsumarlin

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Phosphoric Acid ◽

Adsorption Capacity ◽

Adsorption Process ◽

Methylene Blue Adsorption ◽

Palm Fiber ◽

Methylene Blue Removal ◽

Phosphoric Acid Concentration

In this study, two types of adsorbent including activated carbon and bio-sorbent were produced from Palm fiber wastes (PFW), which were activated by phosphoric acid. The influence of adsorbent type and phosphoric acid concentration on methylene blue adsorption was investigated. The most optimum adsorbent was determined based on adsorption capacity and removal percentage of each adsorbent. The result shows that 9.984 mg/g of adsorption capacity and 99.84% of removal percentage were achieved in 90 minutes’ adsorption, which demonstrates the huge potential of bio-sorbent and was chosen to be the most optimum adsorbent based on methylene blue removal. The characterization of bio-sorbent was then investigated using FTIR and SEM. FTIR result shows that bio-sorbent contains cellulose which affected the adsorption process while SEM result shows the cleaner pores and surface compared to bio-sorbent before activation.

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Removal of Methylene Blue by Adsorption Process - A Comparative Study

Materials Science Forum ◽

10.4028/www.scientific.net/msf.699.245 ◽

2011 ◽

Vol 699 ◽

pp. 245-264 ◽

Cited By ~ 1

Author(s):

A. Xavier ◽

J. Gandhi Rajan ◽

D. Usha ◽

R Sathya

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Adsorption Process ◽

Activated Carbons ◽

Low Cost ◽

Kinetic Equations ◽

Dye Adsorption ◽

Industrial Wastes ◽

Blue Dye ◽

Molecular Formula

Methylene blue is a heterocyclic aromatic chemical compound with the molecular formula C16H18N3SCl. It has used in the biology and chemistry field. At room temperature, it appears as a solid, odourless dark green powder that yields blue solution when dissolved in water. As a part of removal of methylene blue dye from textile and leather industrial wastes, using activated carbon as adsorbents namely, commercial activated carbon (CAC), rose apple carbon (RAC), coconut shell carbon (CSC) and saw dust carbon (SDC). The percentage of Methylene blue adsorbed increases with decrease in initial concentration and particle size of adsorbent and increased with increase in contact time, temperature and dose of adsorbents. The pH is highly sensitive for dye adsorption process. The adsorption process followed first order kinetics and the adsorption data the modeled with Freundlich and Langmuir isotherms. The first kinetic equations like Natarajan Khalaf, Lagergren, Bhattacharya and Venkobhachar and intra particle diffusion were found to be applicable. A comparative account of the adsorption capacity of various carbons has been made. These activated carbons are alternative to commercial AC for the removal dyes in General and MB is particular. These results are reported highly efficient and effective and low cost adsorbent for the MB. The thermodynamics parameters are also studied and it obeys spontaneous process. The results are confirmed by before and after adsorption process with the help of the following instrumental techniques viz., FT-IR, UV-Visible Spectrophotometer and SEM photos.

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Two-Stage Adsorber Design for Methylene Blue Removal by Coconut Shell Activated Carbon

Malaysian Journal of Fundamental and Applied Sciences ◽

10.11113/mjfas.v17n6.2303 ◽

2021 ◽

Vol 17 (6) ◽

pp. 768-775

Author(s):

Fadina Amran ◽

Nur Fatiah Zainuddin ◽

Muhammad Abbas Ahmad Zaini

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Contact Time ◽

Coconut Shell ◽

Two Stage ◽

Methylene Blue Removal ◽

Pseudo Second Order ◽

Coconut Shell Activated Carbon ◽

Langmuir Constants ◽

Insight Into

The present work was aimed at evaluating the performance of two-stage adsorber for methylene blue removal by coconut shell activated carbon in minimizing the adsorbent mass and contact time. The Langmuir constants were used to evaluate the optimum mass, while the pseudo-second-order constants for contact time. Results show that the adsorbent mass can only be minimized by 0.01 % due to the high adsorbent affinity towards methylene blue, while the contact time has been optimized to 12.2 min at the studied conditions. The effect of adsorbent affinity in two-stage adsorber was analyzed to shed some light about its importance in the design of two-stage adsorber. The performance evaluation was also discussed to bring insight into wastewater treatment applications.

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Equilibrium Adsorption Studies of Methylene Blue onto Caesalpinia pulcherrima Husk-based Activated Carbon

Chemical Science International Journal ◽

10.9734/csji/2019/v26i330096 ◽

2019 ◽

pp. 1-11

Author(s):

A. A. Nuhu ◽

I. C. P. Omali ◽

C. O. Clifford

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Chemical Activation ◽

Langmuir Model ◽

Coefficient Of Determination ◽

Adsorption Characteristic ◽

Monolayer Adsorption ◽

Langmuir Isotherm Model ◽

Activating Agent ◽

Efficient Adsorbent

Activated carbon was prepared from Caesalpinia pulcherrima husk (CPH) by chemical activation method using phosphoric acid as an activating agent. The activated sample was characterized based on the physical properties. The experimental data were fitted to Langmuir, Freundlich and Temkin models. The coefficient of determination for Langmuir model R2 = 0.967 was higher compared to Freundlich and Temkin showing monolayer adsorption, and also established that the adsorption of methylene onto CPH based activated carbon can be best described by the Langmuir isotherm model. The energy of adsorption (806.2 kJ/mol) obtained from this model shows clearly that the process is chemisorption. It was observed that the adsorption characteristic indicates a rapid uptake of the adsorbate; the optimum contact time for the adsorption of Methylene blue onto the prepared carbon was 60 minutes. This evidence also points to chemisorption process. These results demonstrate that the carbon derived from CPH can be used as an efficient adsorbent for the adsorption of Methylene blue.

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Methylene Blue Removal Using Foxtail Palm Fruits as Potential Activated Carbon

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1010.477 ◽

2020 ◽

Vol 1010 ◽

pp. 477-482

Author(s):

Nik Raihan Nik Yusoff ◽

Syafiqa Jauna Mohamed Jefry ◽

Yin Teng Lai ◽

Nurul Syazana Abdul Halim ◽

Noor Syuhadah Subki

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Textile Industry ◽

Contact Time ◽

Dye Adsorption ◽

Dye Wastewater ◽

Palm Fruit ◽

Water Users ◽

Impregnation Time ◽

Palm Fruits

Textile industry is commonly use dyes in colouring process which become the major dye wastewater source that leads to serious pollution in the environment. The disposed dyes can lead to serious harm to the water users and life in the aquatic because of the dye properties. Hence, the dye adsorption by activated carbon prepared from foxtail palm fruit was studied. The objectives of this study were: 1) to prepare activated carbon from foxtail fruit palm and 2) to study the effect of contact time, adsorbent dosage and initial concentration of dye usage toward the efficiency of the prepared activated carbon. Nitric acid was used as activating agent in this experiment, with impregnation time of overnight and 500 °C of 2.5 hours carbonization. The adsorption capability of foxtail fruit palm activated carbon as activated carbon was determined with the use of a dye called methylene blue. The results showed that 5 g of activated carbon was used to reduce 97.1% of 2 mg/L methylene blue with 150 minutes contact time. This result aligns with the SEM result which indicated that the produce activated carbon is rich with well-developed and irregular size of pores ranging between 1.585 μm to 7.556 μm. This study indicates that activated carbon from foxtail palm fruits could be utilized as an alternative activated carbon to treat dye wastewater.

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Preparation of mesoporous activated carbon from date stones for the adsorption of Bemacid Red

Water Science & Technology ◽

10.2166/wst.2019.135 ◽

2019 ◽

Vol 79 (7) ◽

pp. 1357-1366 ◽

Cited By ~ 1

Author(s):

Rabia Boudia ◽

Goussem Mimanne ◽

Karim Benhabib ◽

Laurence Pirault-Roy

Keyword(s):

Activated Carbon ◽

Textile Industry ◽

Contact Time ◽

Adsorption Process ◽

Agricultural Waste ◽

Organic Pollutant ◽

Second Order ◽

Textile Dye ◽

Solution Ph ◽

Pseudo Second Order

Abstract This work concerns the elimination of the organic pollutant; Bemacid Red (BR), a rather persistent dye present in wastewater from the textile industry in western Algeria, by adsorption on carbon from an agricultural waste in the optimal conditions of the adsorption process. An active carbon was synthesized by treating an agro-alimentary waste, the date stones that are very abundant in Algeria, physically and chemically. Sample after activation (SAA) with phosphoric acid was highly efficient for the removal of BR. The characterization of this porous material has shown a specific surface area that exceeds 900 m2/g with the presence of mesopores. The iodine value also indicates that the activated carbon obtained has a large micro porosity. The reduction of the infrared spectroscopy (FTIR) bands reveals that the waste has been synthesized and activated in good conditions. Parameters influencing the adsorption process have been studied and optimized, such as contact time, adsorbent mass, solution pH, initial dye concentration and temperature. The results show that for a contact time of 60 min, a mass of 0.5 g and at room temperature, the adsorption rate of the BR by the SAA is at its maximum. Pseudo-first-order, pseudo-second-order and intraparticle diffusion models were studied to analyse adsorption kinetics. The result shows the adsorption kinetic is best with the pseudo-second-order model. In this study, Langmuir, Freundlich and Temkin isotherms were investigated for adsorption of BR onto SAA. The Freundlich and Temkin isotherms have the highest correlations coefficients. The suggested adsorption process involves multilayer adsorption with the creation of chemical bonds. The mechanism of adsorption of BR by SAA is spontaneous and exothermic, and the Gibbs free energy values confirm that the elimination of the textile dye follows a physisorption.

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