scholarly journals Adsorption of Phenol from Aqueous Solution Using Activated Carbon prepared from Coconut Shell

2017 ◽  
Vol 29 (1) ◽  
pp. 9-13
Author(s):  
Masuma Sultana Ripa ◽  
Rafat Mahmood ◽  
Sabrina Khan ◽  
Easir A Khan
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Iodine Number ◽  
Chemical Engineering ◽  
Coconut Shell ◽  
Physical Activation ◽  
Batch Adsorption ◽  
Adsorption Model ◽  
Solution Ph

Adsorption separation of phenol from aqueous solution using activated carbon was investigated in this work. The adsorbent was prepared from coconut shell and activated by physical activation method. The coconut shell was first carbonized at 800°C under nitrogen atmosphere and activated by CO2 at the same temperature for one hour. The prepared activated carbon was characterized by Scanning Electron Microscope (SEM) and BET Surface Analyzer and by the determination of iodine number as well as Boehm titration. The iodine number indicates the degree of relative activation of the adsorbent. The equilibrium adsorption isotherm phenol from aqueous solution was performed using liquid phase batch adsorption experiments. The effect of experimental parameters including solution pH, agitation time, particle size, temperature and initial concentration was investigated. The equilibrium data was analyzed using Langmuir and Freundlich adsorption model to describe the adsorption isotherm and estimate the adsorption isotherm parameters. The results indicate the potential use of the adsorbent for removal of phenol from the aqueous solution.Journal of Chemical Engineering, Vol. 29, No. 1, 2017: 9-13

Modification of granular activated carbon using low molecular weight polymer for enhanced removal of Cu2 +  from aqueous solution

2007 ◽  
Vol 56 (9) ◽  
pp. 95-101 ◽  
Author(s):  
C.Y. Yin ◽  
M.K. Aroua ◽  
W.M.A.W. Daud
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Freundlich Isotherm ◽  
Initial Solution ◽  
Batch Adsorption ◽  
Solution Ph ◽  
Molecular Weight Polymer ◽  
Adsorption Capacities ◽  
Surface Impregnation ◽  
Better Than

Palm shell activated carbon was modified via surface impregnation with polyethyleneimine (PEI) to enhance removal of Cu2 +  from aqueous solution in this study. The effect of PEI modification on batch adsorption of Cu2 +  as well as the equilibrium behavior of adsorption of metal ions on activated carbon were investigated. PEI modification clearly increased the Cu2 +  adsorption capacities by 68% and 75.86% for initial solution pH of 3 and 5 respectively. The adsorption data of Cu2 +  on both virgin and PEI-modified AC for both initial solution pH of 3 and 5 fitted the Langmuir and Redlich–Peterson isotherms considerably better than the Freundlich isotherm.

scholarly journals Adsorption Isotherm and Kinetic Studies of Pentachlorophenol Removal from Aqueous Solution onto Coconut Shell-based Granular Activated Carbon

2018 ◽  
Vol 11 (2) ◽  
pp. 68-78
Author(s):  
Mohd Hafizuddin ◽  
Siti Rozaimah S ◽  
Hassimi Abu Hasan ◽  
Reehan Adnee Abd. ◽  
Siti Nur Hatika ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Adsorption Isotherm ◽  
Granular Activated Carbon ◽  
Kinetic Studies ◽  
Coconut Shell

scholarly journals Adsorption Phenomenon of Arundinaria alpina Stem-Based Activated Carbon for the Removal of Lead from Aqueous Solution

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yosef Asrat ◽  
Amare Tiruneh Adugna ◽  
M. Kamaraj ◽  
Surafel Mustefa Beyan
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Batch Adsorption ◽  
X Ray Diffraction ◽  
Solution Ph ◽  
Synthetic Solution ◽  
Temperature Ranges

In this study, activated carbon was prepared from locally available bamboo (Arundinaria alpina) in Ethiopia to remove Pb (II) from wastewater. Various effects such as solution pH, initial Pb (II) ion concentration, and adsorbent dose were investigated and accordingly discussed, and the process was carried out on a batch adsorption base. Dried Arundinaria alpina stem was activated with potassium hydroxide (KOH) at a ratio of 1 : 1 (w/v) and carbonized in a furnace at three temperature ranges (500oC, 600oC, and 700oC) for 3 h. The physicochemical of Arundinaria alpina stem activated carbon (AASAC) was investigated and the resultant of 500oC treatment setup is found as ideal in terms of yield (40.6 g), ash (3.5%), porosity (0.704%), moisture (7.7%), and iodine number (814.69 mg/g). The further characterization of ideal AASAC was carried out by scanning electron microscopy (SEM), X-ray diffraction (XRD) spectroscopy, and Fourier transform infra-red (FTIR). The optimum Pb (II) removal efficiency of AASAC was 99.8% at pH 5 in a synthetic solution, but the efficiency declined to 60.42% on real industrial wastewater due to the presence of its mixed pollutant nature. Freundlich isotherm model is more favorable than Langmuir with a high correlation coefficient (R2-0.9496) for Pb (II) adsorption. The study revealed that AASAC has a potential adsorption efficiency to remove the Pb (II) ion from the aqueous solution which is also recommended as an adsorbent for real industry wastewater treatment.

Removal of Cr(VI) from Aqueous Solution by Acid Treated Fungal Biomass

2011 ◽  
Vol 197-198 ◽  
pp. 131-135
Author(s):  
Li Fang Zhang ◽  
Ying Ying Chen ◽  
Wen Jie Zhang
Keyword(s):  
Aqueous Solution ◽  
Fungal Biomass ◽  
Adsorption Model ◽  
Solution Ph ◽  
Initial Concentration ◽  
Biosorption Capacity ◽  
Penicillium Sp ◽  
Chromium Vi ◽  
Equilibrium Data ◽  
Biosorption Equilibrium

Biosorption of chromium (VI) ions from aqueous solution with fungal biomass Penicillium sp. was investigated in the batch system. The influence of contact time, solution pH, biosorbent concentration, initial concentration of Cr (VI) ions and temperature on biosorption capacity of Cr (VI) ions was studied. The uptake of Cr (VI) was highly pH dependent and the optimum pH for biosorption of Cr (VI) ions was found to be 2.0. Biosorption capacity of Cr (VI) ions decreased with increased biosorbent concentration and increased with increase in initial concentration of Cr (VI) ions. The experiment results also showed that high temperatures increased the biosorption capacity of Cr (VI) by fungal biomass. It was found that the biosorption equilibrium data were fitted very well to the kangmuir as well as to the Freundlich adsorption model. The maximum sorptive capacities obtained from the Langmuir equation at temperature of 20, 30 and 40°C were 25.91, 32.68 and 35.97 mg/g for Cr (VI) ions, respectively. The results of this study indicated that the fungal biomass of Penicillium sp. is a promising biosorbent for removal of chromium (VI) ions from the water.

scholarly journals Removal of Erichrome Black T from Synthetic Wastewater by Cotton Waste

2011 ◽  
Vol 8 (2) ◽  
pp. 803-808 ◽  
Author(s):  
U. V. Ladhe ◽  
S. K. Wankhede ◽  
V. T. Patil ◽  
P. R. Patil
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Chemical Kinetics ◽  
Contact Time ◽  
Ph Effect ◽  
Physicochemical Characterization ◽  
Synthetic Wastewater ◽  
Batch Adsorption ◽  
Experimental Parameters ◽  
Cotton Waste

Adsorptions of Erichrome Black T dye in aqueous solution on cotton stem activated carbon have been studied as a function of contact time, concentration and pH. Effect of various experimental parameters has been investigated at 39±1°C under batch adsorption technique. The result shows that cotton stem activated carbon adsorbs dye to a sufficient extent. The physicochemical characterization and chemical kinetics was also examined for the same dye. The overall result shows that it can be fruitfully used for the removal of dye from wastewaters.

scholarly journals Adsorption of selected azo dyes from an aqueous solution by activated carbon derived from Monotheca buxifolia waste seeds

2020 ◽  
Vol 15 (No. 3) ◽  
pp. 166-172 ◽  
Author(s):  
Ruqia Nazir ◽  
Muslim Khan ◽  
Riaz Ur Rehman ◽  
Shaukat Shujah ◽  
Mansoor Khan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Azo Dyes ◽  
Solution Ph ◽  
Electron Microscopic ◽  
Adsorption Models ◽  
Electron Microscopic Image ◽  
Monotheca Buxifolia ◽  
Ph Range ◽  
Scanning Electron Microscopic Image

In this study, activated carbon derived from Monotheca buxifolia waste seeds was used for the adsorptive removal of a number of selected azo dyes such as Eriochrome Black T (EBT), Remazol brilliant blue (RBB), Remazol yellow (RY) and Remazol brilliant orange (RBO) from an aqueous solution by changing the initial dye concentration, adsorbent dosage, solution pH, contact time and temperature. A Fourier transform infrared spectroscopic analysis of the activated carbon showed the existence of hydroxyls, methyl, methylene, carbonyls, alkane and alkenes groups while the scanning electron microscopic image displayed the gradual formation of cavities and open pores on the surface. The results showed that as the amount of the adsorbent and the shaking time were increased, the removal percentage of the dye increased accordingly. Higher adsorption percentages were observed at a lower dye concentration and temperature in an acidic media at a pH range (1–5). The investigated data were evaluated with the Langmuir and Freundlich adsorption models. The maximum adsorption capacities obtained from the Langmuir model were 112.36, 96.34, 97.65 and 90.91 mg/g for EBT, RBB, RY and RBO, respectively. The results indicated that the electrostatic interaction was the main cause of the adsorption of these anionic azo dyes on the surface of the activated carbon.

scholarly journals Production and Characterization of Activated Carbon from Coal for Gold Adsorption in Cyanide Solutions

2020 ◽  
Vol 40 (1) ◽  
pp. 34-44
Author(s):  
Karen L. Martínez-Mendoza ◽  
Juan Manuel Barraza Burgos ◽  
Nilson Marriaga-Cabrales ◽  
Fiderman Machuca-Martinez ◽  
Mariber Barajas ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Physical Activation ◽  
Adsorption Model ◽  
Waste Solution ◽  
Synthetic Solution ◽  
Cyanide Solutions ◽  
Two Stages ◽  
Characterization Of Activated Carbon

In this work, activated carbons were produced using coal as raw matter from seven Colombian carboniferous zones. Physical activation was performed in two stages: a carbonization stage with Nitrogen at a temperature of 850 °C and a residence time of 2 h, followed by an activation stage using steam at temperatures of 700 and 850 °C with residence times of 1,5 h and 2,5 h. From the pore volume characterization for the adsorption of gold, two activated carbons from Cundinamarca, obtained at 850 °C (1,5 h), 850 °C (2,5 h), and a commercial carbon (GRC 22) were selected. Gold adsorption tests were performed with those three activated carbons using synthetic aurocyanide solutions and a gold waste solution. The data of the adsorption isotherms were adjusted using the Freundlich adsorption model for the synthetic solution, as well as Langmuir for the waste solution. The results showed that, using a solution of 1 ppm, the activated carbons C-850-2.5 and C- 850-1.5 produced the higher maximum gold loading capacities in the equilibrium (8,7 and 9,3 mg Au/g, respectively) in comparison to the commercial activated carbon (4,7 mg Au/g).  Gold adsorption test using a waste solution (21 ppm of gold) showed that the activated carbon C-850-1.5 had the highest value of adsorption capacity (4,58 mg Au/g) compared to C-850-2.5 (2,95 mgAu /g).

Applying Activated Carbon Derived from Coconut Shell Loaded by Silver Nanoparticles to Remove Methylene Blue in Aqueous Solution

2018 ◽  
Vol 229 (12) ◽  
Author(s):  
Huu Tap Van ◽  
Thi Minh Phuong Nguyen ◽  
Vu Thi Thao ◽  
Xuan Hoa Vu ◽  
Tien Vinh Nguyen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Silver Nanoparticles ◽  
Activated Carbon ◽  
Coconut Shell
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