scholarly journals Arsenic Removal from Water by Adsorption onto Iron Oxide/Nano-Porous Carbon Magnetic Composite

2019 ◽  
Vol 9 (18) ◽  
pp. 3732 ◽  
Author(s):  
Sahira Joshi ◽  
Manobin Sharma ◽  
Anshu Kumari ◽  
Surendra Shrestha ◽  
Bhanu Shrestha
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Sugarcane Bagasse ◽  
Contact Time ◽  
Arsenic Removal ◽  
Chemical Activation ◽  
Batch Adsorption ◽  
Magnetic Composite ◽  
One Pot ◽  
Magnetic Fe3o4

This study aimed to develop magnetic Fe3O4/sugarcane bagasse activated carbon composite for the adsorption of arsenic (III) from aqueous solutions. Activated carbon (AC) was prepared from sugarcane bagasse by chemical activation using H3PO4 as an activating agent at 400 °C. To enhance adsorption capacity for arsenic, the resultant AC was composited with Fe3O4 particles by facile one-pot hydrothermal treatment. This method involves mixing the AC with aqueous solution of iron (II) chloride tetrahydrate, polyvinyl pyrrolidone (PVP), and ethanol. Batch adsorption experiments were conducted for the adsorption of As (III) onto the composite. The effects of pH, adsorbent dosage, and contact time on the arsenic adsorption were studied. The result showed that the composite could remove the arsenic from the water far more effectively than the plain AC. The highest percentage of arsenic removal was found at pH at 8, adsorbent dose of 1.8 g/L, and contact time of 60 min. Langmuir and Freundlich adsorption isotherm was used to analyze the equilibrium experimental data. Langmuir model showed the best fit compared to the Freundlich model with a maximal capacity of 6.69 mg/g. These findings indicated that magnetic Fe3O4/sugarcane bagasse AC composite could be potentially applied for adsorptive removal of arsenic (III) from aqueous solutions.

scholarly journals Adsorption efficiency of carbon from treated sugarcane bagasse in removing chromium (VI) from aqueous solutions by optimization of adsorption parameters

2009 ◽  
Vol 1 (2) ◽  
pp. 155-158
Author(s):  
Sucharita Tandon ◽  
N. Nandini
Keyword(s):  
Aqueous Solutions ◽  
Sugarcane Bagasse ◽  
Orthophosphoric Acid ◽  
Chemical Activation ◽  
Batch Adsorption ◽  
Adsorption Parameters ◽  
Chromium Vi ◽  
Adsorbate Concentration ◽  
Adsorption Technology ◽  
Process Factors

Adsorption is one of the effective techniques for removal of chromium (VI) from wastewater. In the present study, efforts have been made to develop adsorption technology for removing Chromium (Cr) VI from aqueous solutions by using sugarcane bagasse a waste which is left after taking out the juice. Activated carbon was prepared from waste sugarcane bagasse by chemical activation with orthophosphoric acid and burning for 3 hrs. Batch adsorption studies carried out showed that the adsorbent prepared from sugarcane bagasse has a significantcapacity in removing Cr (VI) from aqueous solutions. Optimization of certain adsorption process factors i.e. pH, agitation time; adsorbent dose and adsorbate concentration were also made.

scholarly journals Using Pomegranate Peel and Date Pit Activated Carbon for the Removal of Cadmium and Lead Ions from Aqueous Solution

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Wedad A. Al-Onazi ◽  
Mohamed H.H. Ali ◽  
Tahani Al-Garni
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Contact Time ◽  
Metal Ion ◽  
Low Cost ◽  
Chemical Activation ◽  
Reaction Model ◽  
Ion Concentration ◽  
Solution Ph ◽  
Pomegranate Peel

Some agricultural byproducts are useful for solving wastewater pollution problems. These byproducts are of low cost and are effective and ecofriendly. The study aim was to investigate the possibility of using pomegranate peel (PP) and date pit (DP) activated carbon (PPAC and DPAC, respectively) as sorbents to remove Cd(II) and Pb(II) from aqueous solutions. Agricultural wastes of DPs and PPs were subjected to carbonization and chemical activation with H3PO4 (60%) and ZnCl2 and used as adsorbents to remove Cd(II) and Pb(II) from their aqueous solutions. The physical characterizations of PPAC and DPAC, including determination of surface area, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier-transform infrared spectroscopy, were performed. The following factors affected adsorption: solution pH, adsorbent dosage, initial metal ion concentration, and contact time. These factors were studied to identify the optimal adsorption conditions. The results showed that the maximum adsorptions of Cd(II) and Pb(II) were achieved at pH ranging from 6 to 6.5, 90 min contact time, and 0.5 g/L for PPAC and 1 g/L for DPAC dosage. Furthermore, the adsorption efficiencies for both Pb(II) and Cd(II) were higher for PPAC than for DPAC. However, the recorded Qmax values for PPAC were 68.6 and 53.8 mg/g for Pb(II) and Cd(II) and for DPAC were 34.18 and 32.90 mg/g for Pb(II) and Cd(II), respectively. The Langmuir isotherm model fit the adsorption data better than the Freundlich model. Kinetically, the adsorption reaction followed a pseudo-second-order reaction model, with qe ranging from 12.0 to 22.37 mg/g and an R2 value of 0.99.

scholarly journals A novel approach for producing low cost and highly efficient activated carbon for removing cationic dyes

2019 ◽  
Vol 8 (2) ◽  
pp. 74-83
Author(s):  
Fatiha Moughaoui ◽  
Amine Ouaket ◽  
Asmae Laaraibi ◽  
Souad Hamdouch ◽  
Zoubida Anbaoui ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Sugarcane Bagasse ◽  
Low Cost ◽  
Chemical Activation ◽  
Cationic Dyes ◽  
Activation Time ◽  
Activation Temperature ◽  
Impregnation Ratio ◽  
Good Agreement

Chemical activation was used to prepare a low-cost activated carbon (AC) from an agricultural waste material: sugarcane bagasse. It was used as a green biosorbent for the removal of two cationic dyes from aqueous solutions (Methylene blue (MB) and Malachite Green (MG)). Central composite design (CCD) using response surface methodology (RSM) was applied in this work in order to run a limited number of experiments. The possibility of revealing the interaction of three selected factors: activation temperature, activation time, and chemical impregnation ratios at different levels for the process of preparing the AC were studied. Two-second order quadratic regression models for a yield of AC and capacity of adsorption were developed using JMP Software.The results of the process of optimization were carried out; it showed a good agreement between the predictive response of RSM model and the obtained experimental values with high correlation coefficients (R2) which indicates the efficacy of the model. The optimal activated carbon was obtained using 400°C activation temperature, 36 min activation time, and 2 impregnation ratio, resulting in 63.12 % of AC yield and 99.86 % for MB removal and 400°C activation temperature, 90 min activation time and 2 impregnation ratio, resulting in 45.69 % of AC yield and 99.75 % for MG removal. Moreover, the comparison between the experimental and the predicted values at optimum conditions was in good agreement with relatively small errors.This work showed the effectiveness and the performance of preparing activated carbon from sugarcane bagasse, and it recommended as an effective and green biosorbent for the removal of cationic dyes from aqueous solutions.

scholarly journals REMOVAL OF LEAD (Pb2+) IONS FROM AQUEOUS SOLUTION BY ADSORPTION USING SUGARCANE BAGASSE ACTIVATED CARBON COATED WITH MAGNETIC NANOPARTICLES

2020 ◽  
Vol 4 (2) ◽  
pp. 401-408
Author(s):  
Abdullahi Muhammad ◽  
S. Y. Sati ◽  
A. H. Usman
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Magnetic Nanoparticles ◽  
Sugarcane Bagasse ◽  
Contact Time ◽  
Chemical Activation ◽  
Lead Ion ◽  
Neutral Medium ◽  
Vis Spectroscopy ◽  
Carbon Coated

An experiment to remove lead (II) ions through adsorption from its aqueous solution   using Sugarcane Bagasse Activated carbon (SBAC) was carried out. As one of the ways employ to reduce the high cost of treatment of industrial effluents.  Agricultural wastes could be considered as suitable material for the production of Activated Carbon due it high carbon contents, environmentally friendly and low cost of production. In this work, activated carbon was produced by chemical activation with sulphuric acid (H2SO4) of sugarcane bagasse materials. It was then coated with magnetic nanoparticle (Fe3O4) prepared by chemical precipitation of Fe2+ and Fe3+ salt from aqueous solution   and tested for its efficiency as an adsorbent for the removal of Lead(II) ion from aqueous solution .The surface morphology, structural and functional groups present were investigated using scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectroscopy. Shift and disappearance of some adsorption bands in the sugarcane bagasse activated carbon coated with magnetic nanoparticles testify the formation of the composite.  Optical properties were determined using UV Vis spectroscopy shows a wavelength ( of 400nm. Adsorption parameters such as effect of pH, contact time, initial concentration of Lead ion and adsorbent dosage were studied. Neutral medium was the optimum pH condition needed for the removal of lead with the percentage removal efficiency of 91%. It was found to be highly efficient at 0.4g of the dosage and at contact time of 60 minutes. This sugarcane bagasse is useful in adsorbing heavy metal in an aqueous solution

scholarly journals Activated Carbon from Honeydew Rind as an Adsorbent in Zinc Removal from Aqueous Solutions

2015 ◽  
Vol 773-774 ◽  
pp. 1246-1250
Author(s):  
Zalilah Murni Yunus ◽  
Norzila Othman ◽  
Rafidah Hamdan ◽  
Nurun Ruslan Najwa ◽  
Norfarihah Abu Kasin ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Contact Time ◽  
Metal Uptake ◽  
Low Cost ◽  
Chemical Activation ◽  
Zinc Removal ◽  
Zn Concentration ◽  
Maximum Removal ◽  
Effect Of Surface

In this study, activated carbon (AC) was produced from honeydew rind, a low-cost agricultural by-product, by chemical activation using H2SO4as an activator was used as an adsorbent for the removal of zinc ions from aqueous solutions. Preparation method on the effect of surface morphology at different carbonization temperatures 450°C, 470°C, 490°C and 510°C was studied. The AC was characterized using FEM-SEM, FTIR and TG. Batch adsorptions were carried out to optimize different variables such as zinc concentration, contact time, pH and biosorbent amount. The results from AAS analysis showed that the maximum adsorption of zinc onto honeydew rind AC was achieved at the conditions of pH 7.5, 1.5g biosorbent amount, 1000mg/L initial zn concentration and 45min contact time. The maximum metal uptake and maximum removal were 66.55mg/g and 99.79% respectively.

scholarly journals A novel approach for producing low cost and highly efficient activated carbon for removing cationic dyes

2019 ◽  
Vol 8 (2) ◽  
pp. 74
Author(s):  
Fatiha Moughaoui ◽  
Amine Ouaket ◽  
Asmae Laaraibi ◽  
Souad Hamdouch ◽  
Zoubida Anbaoui ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Sugarcane Bagasse ◽  
Low Cost ◽  
Chemical Activation ◽  
Cationic Dyes ◽  
Activation Time ◽  
Activation Temperature ◽  
Impregnation Ratio ◽  
Good Agreement

<p>Chemical activation was used to prepare a low-cost activated carbon (AC) from an agricultural waste material: sugarcane bagasse. It was used as a green biosorbent for the removal of two cationic dyes from aqueous solutions (Methylene blue (MB) and Malachite Green (MG)). Central composite design (CCD) using response surface methodology (RSM) was applied in this work in order to run a limited number of experiments. The possibility of revealing the interaction of three selected factors: activation temperature, activation time, and chemical impregnation ratios at different levels for the process of preparing the AC were studied. Two-second order quadratic regression models for a yield of AC and capacity of adsorption were developed using JMP Software.</p><p>The results of the process of optimization were carried out; it showed a good agreement between the predictive response of RSM model and the obtained experimental values with high correlation coefficients (R<sup>2</sup>) which indicates the efficacy of the model. The optimal activated carbon was obtained using 400°C activation temperature, 36 min activation time, and 2 impregnation ratio, resulting in 63.12 % of AC yield and 99.86 % for MB removal and 400°C activation temperature, 90 min activation time and 2 impregnation ratio, resulting in 45.69 % of AC yield and 99.75 % for MG removal. Moreover, the comparison between the experimental and the predicted values at optimum conditions was in good agreement with relatively small errors.</p><p>This work showed the effectiveness and the performance of preparing activated carbon from sugarcane bagasse, and it recommended as an effective and green biosorbent for the removal of cationic dyes from aqueous solutions.</p>

scholarly journals Removal of Fluoride Ions by Adsorption onto Fe2O3 /Areca Nut Activated Carbon Composite

2017 ◽  
Vol 12 (1) ◽  
pp. 175-183 ◽  
Author(s):  
Sahira Joshi ◽  
Mandira Adhikari Pradhananga
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Contact Time ◽  
Chemical Activation ◽  
Carbon Composite ◽  
Fluoride Removal ◽  
Batch Adsorption ◽  
Areca Nut ◽  
Fluoride Ions ◽  
Adsorbent Dose

The possibility of Fe2O3/Areca nut activated carbon composite as an adsorbent for removal of fluoride from water is presented. Activated carbon (AC) was prepared from Areca nut by chemical activation with phosphoric acid at 400°C under nitrogen atmosphere. The resultant AC was characterized by adsorption of methylene blue and iodine. As indicated by iodine and methylene blue adsorption, the AC was highly micro and meso porous in nature. The adsorbent was prepared by compositing the AC with ferric oxide. Batch adsorption experiments were conducted to describe the effect of pH, contact time and adsorbent dose on fluoride removal from water. Percentage removal of fluoride by the adsorbent was ~75 % at contact time of 180 minutes. The maximum adsorption of fluoride was observed at pH 2 with adsorbent dose of 20 gm/L. The adsorption equilibrium data was analyzed by Langmuir and Freundlich adsorption isotherms. The adsorption data was fitted Langmuir better than Freundlich isotherm. The adsorption capacity of the Fe2O3/Areca nut activated carbon composite was found to be 4.8 mg/gm. The composite adsorbent prepared from Areca nut AC could be an efficient adsorbent for removal of fluoride from water.Journal of the Institute of Engineering, 2016, 12(1): 175-183 

Adsorption of 2,4-Dichlorophenol and Rhodamine-B from Aqueous Solutions onto Activated Carbon Derived from Phragmites Australis

2015 ◽  
Vol 1088 ◽  
pp. 533-539
Author(s):  
Su Hong Chen ◽  
Jian Zhang ◽  
Zhi Jun Han ◽  
Cheng Lu Zhang ◽  
Qin Yan Yue
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Phragmites Australis ◽  
Rhodamine B ◽  
Contact Time ◽  
Batch Adsorption ◽  
Adsorption Studies ◽  
Potential Use ◽  
Adsorbent Dose

This study investigates the potential use of activated carbon prepared from Phragmites Australis for the removal of 2,4-dichlorophenol (DCP) and Rhodamine-B (RB) from aqueous solutions. P. Australis activated carbon (PAAC), a new adsorbent, was prepared from P. Australis by H3PO4 activation. Batch adsorption studies were conducted to evaluate the effect of various parameters such as pH, adsorbent dose, contact time and initial 2,4-DCP and RB concentration. Accordingly, the activated carbon developed in this study is effective and practical for utilization in wastewater treatment for 2,4-DCP and RB removal.

scholarly journals Adsorption of Reactive Dyes from Aqueous Solution Using Activated Carbon Prepared from Plantain Leaf Sheath Waste

2020 ◽  
Vol 34 (3) ◽  
pp. 169-180
Author(s):  
G. Sangavi ◽  
Argho Bakshi ◽  
Mathangi Ganapathy ◽  
Nandhini Devi Ganesan
Keyword(s):  
Activated Carbon ◽  
Contact Time ◽  
Chemical Activation ◽  
Reactive Dyes ◽  
Industrial Effluents ◽  
Leaf Sheath ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Activating Agent ◽  
Reactive Green 19

All parts of the plantain are widely used in India for various purposes. But plantain<br /> leaf sheath always ends up as waste material which accumulates as a biowaste. The present study focuses on the preparation of activated carbon using phosphoric acid as activating agent, and its efficacy as an adsorbent for the removal of reactive dyes, Reactive<br /> Green 19, and Reactive Red 141. Batch adsorption studies have been conducted and<br /> optimum adsorption conditions were determined as a function of contact time, initial dye<br /> concentration, adsorbent dosage, and pH. The experimental data were analyzed using<br /> Langmuir, Freundlich and Temkin isotherm models. The pseudo-first and second-order,<br /> intraparticle diffusion, and Elovich models were used to analyze the kinetic parameters<br /> of the adsorption system. Under the optimum conditions (initial dye concentration = 200<br /> mg L–1, adsorbent dose = 1 g, pH = 2, contact time = 220 min for reactive green 19 and<br /> 180 min for reactive red 141), maximum percentage removal for reactive green 19 and<br /> reactive red 141 were obtained as 65.9 % and 72.7 %, respectively. The results demonstrate that activated carbon produced from chemical activation of the plantain waste has the potential of adsorbing reactive dyes from industrial effluents.

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