Efficient removal of malachite green dye from aqueous solution using Curcuma caesia based activated carbon

2020 ◽  
Vol 195 ◽  
pp. 341-352
Author(s):  
Charu Arora ◽  
Pramod Kumar ◽  
Sanju Soni ◽  
Jyoti Mittal ◽  
Alok Mittal ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Efficient Removal ◽  
Malachite Green Dye

scholarly journals Biosorption Studies for the Removal of Malachite Green from its Aqueous Solution by Activated Carbon Prepared from Cassava Peel

2011 ◽  
Vol 8 (s1) ◽  
pp. S61-S66 ◽  
Author(s):  
C. Parvathi ◽  
T. Maruthavanan ◽  
S. Sivamani ◽  
C. Prakash
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Dye Removal ◽  
Agricultural Waste ◽  
Raw Material ◽  
Textile Effluent ◽  
Malachite Green Dye ◽  
Health Related ◽  
Cassava Peel

The association of dyes with health related problems is not a new phenomenon. The effectiveness of carbon adsorption for dye removal from textile effluent has made it an ideal alternative to other expensive treatment methods. The preparation of activated carbon from agricultural waste could increase economic return and reduce pollution. Cassava peel has been used as a raw material to produce activated carbon. The study investigates the removal of malachite green dye from its aqueous solution. The effects of condition such as adsorbent dosage, initial dye concentration, pH and contact time were studied. The adsorption capacity was demonstrated as a function of time for malachite green from aqueous solution by the prepared activated carbon. The results showed that as the amount of the adsorbent was increased, the percentage of dye removal increased accordingly. Higher adsorption percentages were observed at lower concentrations of malachite green dye. Silver nitrate treated cassava peel showed a better performance compared to Sulphuric acid treated and raw carbons, thus making it an interesting option for dye removal textile effluent.

scholarly journals Adsorption Kinetics of Malachite Green Dye Removal from Aqueous Solution by using Banana Stem

2021 ◽  
Vol 10 (5) ◽  
pp. 215-220
Author(s):  
K Arun Kumar ◽  
Sandeep. S,
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Dye Removal ◽  
Agricultural Waste ◽  
Research Work ◽  
Isotherm Models ◽  
Maximum Adsorption Capacity ◽  
Malachite Green Dye ◽  
Banana Stem

This research work goals at searching the effectiveness of Malachite Green dye removal using banana stem, an agricultural waste as an activated carbon. The banana stem activated carbon was made ready in the laboratory by carbonization followed by activation. Adsorption studies were carried out to check the effect of various experimental conditions like different pH values, varying contact time, initial concentration of dye and changing banana stem carbon dosage on the removal of Malachite Green dye from aqueous solution at constant Temperature and agitation speed. The equilibrium experimental data were used for applicability of Langmuir and Freundlich isotherm models and the kinetic models. Batch test showed that maximum of 99% of dye was removed when the dye concentration was 2 mg/L, at an adsorbent dose of 0.75 gm/L at dye pH 8 in 45 minutes. From the obtained results it is validated that the equilibrium data’s favorable for both Freundlich and Langmuir isotherms. Maximum adsorption capacity of banana stem carbon on malachite green dye was found to be 8.29 mg/g. It was prevailing that the adsorption process followed the pseudo-second-order rate kinetics. It was observed that intra particle diffusion is not the only rate-limiting step in this adsorption system but also regression results indicate that the linear regression model gives the best results. The above observations recommend that Banana stem carbon can be competently implemented for removal of malachite green dye from aqueous solution in the adsorption treatment processes.

scholarly journals Scavenging malachite green dye from aqueous solution using durian peel based activated carbon

2021 ◽  
Vol 17 (1) ◽  
pp. 95-103
Author(s):  
Mohamad Firdaus Mohamad Yusop ◽  
Mohd Azmier Ahmad ◽  
Nur Ayshah Rosli ◽  
Fadzil Noor Gonawan ◽  
Soran Jalal Abdullah
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Malachite Green ◽  
Diffusion Mechanism ◽  
Freundlich Isotherm ◽  
Bet Surface Area ◽  
Solution Temperature ◽  
Mechanism Study ◽  
Solution Ph ◽  
Malachite Green Dye

Physiochemical activation consists of heat treatment coupling with CO2 gasification and KOH chemical treatment were applied in preparing durian peel based activated carbon (DPAC) to remove basic dye, malachite green (MG) from aqueous solution. Several parameters namely, effect of initial MG concentration as well as contact time, solution temperature and initial solution pH were carried out in this study. Characterization study revealed that DPAC pose high BET surface area which is 886.31 m2/g and its surface was found to be mesoporous in nature with heterogeneous type of pore structures. Eight isotherms and four kinetic models were utilized and it was revealed that the adsorpttion system followed Freundlich isotherm and pseudo-first order (PFO) kinetic model. Mechanism study using intraparticle diffusion and Boyd plot confirmed that adsorption of MG onto DPAC was controlled by the film-diffusion mechanism. Thermodynamic study indicated that the adsorption system was exothermic, spontaneous, feasible and governed by physical-type of adsorption.

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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