scholarly journals REMOVAL OF DYES (METHYLENE BLUE, MALACHITE GREEN, METHYL VIOLET) ON ACTIVATED CARBON PREPARED FROM COPPER POD FLOWER.

2017 ◽  
Vol 5 (7) ◽  
pp. 2578-2585
Author(s):  
N Saravanan ◽  
◽  
G Rathika ◽  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Malachite Green ◽  
Methyl Violet

scholarly journals Methylene Blue and Malachite Green Removal From Aqueous Solution Using Waste Activated Carbon

2020 ◽  
Vol 11 (1) ◽  
pp. 7410-7421
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Malachite Green ◽  
Electrostatic Force ◽  
Cationic Dyes ◽  
Contact Period ◽  
Domestic Water ◽  
Adsorption Parameters ◽  
Water Filter ◽  
Synthetic Solution

In the present investigation, Waste Activated Carbon (WAC) collected from domestic water filter has been used for the removal of two cationic dyes methylene blue (MB) and malachite green (MG) from synthetic solution. The surface of WAC is characterized to know the mechanism of adsorption reaction and the effect of different adsorption parameters like pH, temperature, contact period, adsorbate and adsorbent doses are also studied for the said adsorption study. The optimum contact times for MB and MG adsorption on WAC are 60 and 120 minutes respectively, whereas pH is having no significant effect on adsorption. However, % adsorption increases slowly with the increase of pH from 2.5 to 7. Adsorption of both the dyes on WAC is exothermic, spontaneous, and favorable in nature. Langmuir isotherm and pseudo-second-order kinetics are obeyed well. Langmuir’s maximum monolayer adsorption capacities are found to be 15.38 and 18.87mg/g for MB and MG, respectively. Temkin isotherm, and Morris-Weber equations are also obeyed well. Temkin’s isotherm concludes the physicochemical nature of adsorption, and Morris Weber equation indicates possibilities of intraparticle diffusion. The interaction between these two cationic dyes and WAC can be explained through electrostatic force of attraction or by hydrogen bonding.

scholarly journals Silver nanoparticles loaded on activated carbon as a novels adsorbent for the competitive removal of Malachite green and Methylene blue

2015 ◽  
Vol 9 (2) ◽  
pp. 75-92 ◽  
Author(s):  
Maryam Tavakol ◽  
Parviz Aberoomand Azar ◽  
Mohammad Saber Tehrani ◽  
Mehrorang Ghaedi
Keyword(s):  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Activated Carbon ◽  
Malachite Green ◽  
Freundlich Isotherm ◽  
Morphological Properties ◽  
Hydroxyl Group ◽  
Batch Mode ◽  
Initial Ph ◽  
Equilibrium Data

In this study silver  nanoparticles by hydroxyl group (AgOH-NP) were synthesized and loaded on activated carbon prepared from Rosa canina tree (AgOH-NP-AC-RC). This new adsorbent was used for the removal of Malachite green and Methylene blue from aqueous medium.The morphological properties of the novel adsorbent were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and FT-IR analysis. The removal both dyes in batch mode was investigated at various operating parameters like; contact time, initial pH, initial dye concentration and amount of adsorbents. The experimental equilibrium data were analyzed by using various models and it was seen that Freundlich isotherm model fitted well with adsorbtion capacity of 105 mg.g-1for Malachite green and 81.43 mg.g-1 for Methylene blue. The adsorption kinetic data followed pseudo second-order kinetics for removal both dyes.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12053 International Journal of Life Sciences 9 (2) : 2015; 75-92

scholarly journals Dye Adsorbent by Activated Carbon

2021 ◽  
Vol 3 (1) ◽  
pp. 169-173
Author(s):  
N. Selvanathan ◽  
N.S. Subki ◽  
M.A. Sulaiman
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Malachite Green ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Value Added ◽  
Important Class ◽  
Agriculture Waste ◽  
Pineapple Waste ◽  
Carcinogenic Property

Dyes are used extensively in many industries making the research on color production more important. Despite that, dyes are important class of pollutant in which it is disposed in water resources and causes major environmental problems due to toxicity and carcinogenic property of dye. However, the disposed dye into the environment can be treated by several alternatives. In this study, activated carbon derived from pineapple crown, core and peel were prepared by chemical activation using phosphoric acid (H3PO4). Laboratory prepared activated carbons were used to identify the suitability of its application to adsord methylene blue and malachite green. The results indicated that the activated carbon derived from pineapple crown shows maximum adsorption of methylene blue (38.6%) and malachite green. This study shows a benefit of transforming agriculture waste to value added product and also helps to solve over abundance pineapple waste problem.

scholarly journals Synthesis of Activated Carbon/Chitosan/Alginate Beads Powder as an Adsorbent for Methylene Blue and Methyl Violet 2B Dyes

2020 ◽  
Vol 20 (5) ◽  
pp. 1119
Author(s):  
Margaretha Aditya Kurnia Purnaningtyas ◽  
Sri Sudiono ◽  
Dwi Siswanta
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Methyl Violet ◽  
Freundlich Isotherm ◽  
Alginate Beads ◽  
Cationic Dyes ◽  
Adsorption Mechanisms ◽  
Methyl Violet 2B ◽  
Desorption Study ◽  
Kinetics And Isotherms

The activated carbon-chitosan-alginate (KKA) beads powder was synthesized to form an adsorbent for the cationic dyes, methylene blue (MB) and methyl violet 2B (MV 2B). The aims of this research were to determine the optimum composition of KKA beads powder for the adsorption of cationic dyes and to investigate the effect of pH, adsorbent mass, contact time, and initial concentration of MB and MV 2B dyes. A desorption study was also implemented to predict the adsorption mechanisms of MB and MV 2B dyes. The KKA beads powder was prepared by mixing chitosan, Na-alginate with various variation of masses (0.6; 0.8; 1.0; and 1.2 g) and activated carbon. The KKA beads were immersed in a CaCl2 solution. The KKA beads powder was characterized using FTIR spectroscopy and SEM. The desorption study was conducted in NaCl (0.1 M and 1.0 M), ethanol (40% and 60%), and pH 4 solution. The result showed that the KKA beads powder had been successfully created, with maximum adsorption capacities of 1.34 mmol g–1 for MB and 1.23 mmol g–1 for MV 2B. The kinetics and isotherms of MB and MV dyes adsorption on the KKA beads powder followed pseudo second order kinetics model and Freundlich isotherm. The desorption study showed that 60% ethanol was the most effective desorption solution for cationic dyes.

Analisis Variasi Temperatur Aktivasi Terhadap Daya Serap Arang Aktif Tandan Aren (Arenga Pinnata Merr) Dengan Agen Aktivasi Potassium Silicate(K2SiO3)

2020 ◽  
Vol 5 (3) ◽  
pp. 221
Author(s):  
Muhammad Azam ◽  
Muhammad Anas ◽  
Erniwati Erniwati
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Adsorption Capacity ◽  
Temperature Variation ◽  
Chemical Activation ◽  
Weight Ratio ◽  
Potassium Silicate ◽  
Physical Activation ◽  
Activation Temperature ◽  
Pyrolysis Reactor

This study aims to determine the effect of variation of activation temperature of activated carbon from sugar palm bunches of chemically activatied with the activation agent of potassium silicate (K2SiO3) on the adsorption capacity of iodine and methylene blue. Activated carbon from bunches of sugar palmacquired in four steps: preparationsteps, carbonizationstepsusing the pyrolysis reactor with temperature of 300 oC - 400 oC for 8 hours and chemical activation using of potassium silicate (K2SiO3) activator in weight ratio of 2: 1 and physical activation using the electric furnace for 30 minutes with temperature variation of600 oC, 650 oC, 700 oC, 750 oC and 800 oC. The iodine and methyleneblue adsorption testedby Titrimetric method and Spectrophotometry methodrespectively. The results of the adsorption of iodine and methylene blue activated carbon from sugar palm bunches increased from 240.55 mg/g and 63.14 mg/g at a temperature of 600 oC to achieve the highest adsorption capacity of 325.80 mg/g and 73.59 mg/g at temperature of 700 oC and decreased by 257.54 mg/g and 52.03 mg/g at a temperature of 800 oCrespectively.However, it does not meet to Indonesia standard (Standard Nasional Indonesia/SNI), which is 750 mg/g and 120 mg/g respectively.

Photo-catalytic Study of Malachite Green Dye Degradation Using Rice Straw Extracted Activated Carbon Supported ZnO Nano-particles

2020 ◽  
Vol 10 (6) ◽  
pp. 849-859
Author(s):  
Radwa A. El-Salamony ◽  
Abeer A. Emam ◽  
Nagwa A. Badawy ◽  
Sara F. El-Morsi
Keyword(s):  
Activated Carbon ◽  
Visible Light ◽  
Rice Straw ◽  
Malachite Green ◽  
Dye Degradation ◽  
Nano Particles ◽  
Oh Radicals ◽  
Impregnation Method ◽  
Photo Degradation ◽  
Malachite Green Dye

Objective: ZnO nanoparticles were synthesized using wet impregnation method, and activated carbon from rice straw (RS) prepared through chemical route. Methods: The nano-composites ZnO-AC series were prepared with different ZnO:AC ratio of 10, 20, 50, and 70% to optimize the zinc oxide nanoparticles used. The obtained composites were characterized by FE-SEM, XRD, SBET, and optical techniques then used for the photo-degradation of Malachite green dye (MG) under visible light. Results: It was found that 10ZnO-AC exhibited excellent visible light photo-catalytic performance. The ·OH radicals’ formation is matching with photo-activity of the prepared composites. The photo-degradation efficiency of MG increased from 63% to 93%, when the 10ZnO-AC photocatalyst amount was increased from 0.5 to 6 g/L. Conclusion: The GC-MS technique was used to analyze the intermediates formed; up to 15 kinds of chemicals were identified as the degradation products.

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