Removal of 4-nitrophenol from aqueous solution by adsorption onto activated carbon prepared from Acacia glauca sawdust

The kinetics and equilibrium study of crystal violate dye adsorption on mixture of activated carbon (PWCAC) and (CSAC) was studied. The use of low cost ecofriendly adsorbent has been investigated as an ideal alternative to the current expensive methods of removing of dye from aqueous solution. This study was done by batch adsorption techniques. The quantitative adsorption kinetic and equilibrium parameter for crystal violate dye were studied using uv-visible adsorption spectroscopy. The effect of initial dye concentration, pH,adsorbent dose, temperature, particle size were determined to find the optimal condition for adsorption. The percentage removal of dye was found to be most effective at pH10and contact time 120 min and at an adsorbent dose 4 g/L of dye. The study indicates that’s, the percentage removal of dye increases with increasing initial dye concentration, adsorption dose and contact time and attains equilibrium at optimum conditions.The equilibrium study of adsorption of crystal violate dye on to mixture of activated carbon was investigated using pseudo first order and pseudo second order kinetic models. The adsorption kinetics was found to follow pseudo second order kinetic model. The equilibrium adsorption data of crystal violate dye on PWCAC and CSAC mixture was analyzed by Langmuir and Freundlich adsorption model. The results show that the Langmuir model provides the best correlation.

Download Full-text

Removal of crystal violate dye from aqueous solution by adsorption on mixture of activated carbon: A kinetic & equilibrium study

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v11i9.2682 ◽

2015 ◽

Vol 11 (9) ◽

pp. 3876-3887

Author(s):

Prakash Bhila Wagh ◽

V.S Shrivastava ◽

V.S Shrivastava

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Contact Time ◽

Second Order ◽

Batch Adsorption ◽

Order Kinetic ◽

Equilibrium Study ◽

Pseudo Second Order ◽

Percentage Removal ◽

Adsorbent Dose

The kinetics and equilibrium study of crystal violate dye adsorption on mixture of activated carbon (PWCAC) and (CSAC) was studied. The use of low cost ecofriendly adsorbent has been investigated as an ideal alternative to the current expensive methods of removing of dye from aqueous solution. This study was done by batch adsorption techniques. The quantitative adsorption kinetic and equilibrium parameter for crystal violate dye were studied using uv-visible adsorption spectroscopy. The effect of initial dye concentration, pH,adsorbent dose, temperature, particle size were determined to find the optimal condition for adsorption. The percentage removal of dye was found to be most effective at pH10and contact time 120 min and at an adsorbent dose 4 g/L of dye. The study indicates that’s, the percentage removal of dye increases with increasing initial dye concentration, adsorption dose and contact time and attains equilibrium at optimum conditions.The equilibrium study of adsorption of crystal violate dye on to mixture of activated carbon was investigated using pseudo first order and pseudo second order kinetic models. The adsorption kinetics was found to follow pseudo second order kinetic model. The equilibrium adsorption data of crystal violate dye on PWCAC and CSAC mixture was analyzed by Langmuir and Freundlich adsorption model. The results show that the Langmuir model provides the best correlation.

Download Full-text

Eggshell Powder as an Adsorbent for Removal of Fluoride from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Studies

E-Journal of Chemistry ◽

10.1155/2012/790401 ◽

2012 ◽

Vol 9 (3) ◽

pp. 1457-1480 ◽

Cited By ~ 47

Author(s):

R. Bhaumik ◽

N. K. Mondal ◽

B. Das ◽

P. Roy ◽

K. C. Pal ◽

...

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Fluoride Removal ◽

Contaminated Water ◽

Fluoride Adsorption ◽

Langmuir Isotherm Model ◽

Pseudo Second Order ◽

Kinetic And Thermodynamic Studies ◽

Maximum Removal

A new medium, eggshell powder has been developed for fluoride removal from aqueous solution. Fluoride adsorption was studied in a batch system where adsorption was found to be pH dependent with maximum removal efficiency at 6.0. The experimental data was more satisfactorily fitted with Langmuir isotherm model. The kinetics and the factor controlling adsorption process fully accepted by pseudo-second-order model were also discussed. Eawas found to be 45.98 kJmol-1by using Arrhenius equation, indicating chemisorption nature of fluoride onto eggshell powder. Thermodynamic study showed spontaneous nature and feasibility of the adsorption process with negative enthalpy (∆H0) value also supported the exothermic nature. Batch experiments were performed to study the applicability of the adsorbent by using fluoride contaminated water collected from affected areas. These results indicate that eggshell powder can be used as an effective, low-cost adsorbent to remove fluoride from aqueous solution as well as groundwater.

Download Full-text

Phenol removal from aqueous solution using silica and activated carbon derived from rice husk

Water Practice & Technology ◽

10.2166/wpt.2019.072 ◽

2019 ◽

Vol 14 (4) ◽

pp. 897-907 ◽

Cited By ~ 2

Author(s):

Hosseinali Asgharnia ◽

Hamidreza Nasehinia ◽

Roohollah Rostami ◽

Marziah Rahmani ◽

Seyed Mahmoud Mehdinia

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Water Treatment ◽

Organic Pollutants ◽

Rice Husk ◽

Contact Time ◽

Adsorption Process ◽

Phenol Removal ◽

Initial Concentration ◽

Maximum Removal

Abstract Phenol and its derivatives are organic pollutants with dangerous effects, such as poisoning, carcinogenicity, mutagenicity, and teratogenicity in humans and other organisms. In this study, the removal of phenol from aqueous solution by adsorption on silica and activated carbon of rice husk was investigated. In this regard, the effects of initial concentration of phenol, pH, dosage of the adsorbents, and contact time on the adsorption of phenol were investigated. The results showed that the maximum removal of phenol by rice husk silica (RHS) and rice husk activated carbon (RHAC) in the initial concentration of 1 mgL−1 phenol, 2 gL−1 adsorbent mass, 120 min contact time, and pH 5 (RHS) or pH 6 (RHAC) were obtained up to 91% and 97.88%, respectively. A significant correlation was also detected between increasing contact times and phenol removal for both adsorbents (p < 0.01). The adsorption process for both of the adsorbents was also more compatible with the Langmuir isotherm. The results of this study showed that RHS and RHAC can be considered as natural and inexpensive adsorbents for water treatment.

Download Full-text

Batch adsorption studies for ketoprofen removal via Dillenia Indica peel activated carbon

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/920/1/012010 ◽

2021 ◽

Vol 920 (1) ◽

pp. 012010

Author(s):

F Fadzail ◽

M Hasan ◽

Z Mokhtar ◽

N Ibrahim ◽

O S An ◽

...

Keyword(s):

Activated Carbon ◽

Adsorption Process ◽

Chemical Activation ◽

Batch Adsorption ◽

Order Model ◽

Batch Mode ◽

Adsorbent Dosage ◽

Pseudo Second Order ◽

Dillenia Indica ◽

Experimental Findings

Abstract Removal of ketoprofen using Dillenia Indica peel activated carbon was investigated using batch adsorption at a laboratory scale. Chemical activation method with the aid of phosphoric acid was utilised in preparing the activated carbon. The adsorption experiments were evaluated using various factors which, are initial concentration, adsorbent dosage, and pH of ketoprofen. The optimum condition was determined to be at pH 6 and adsorbent dosage of 0.4 g with a most KTP uptake of 8.354 mg/g. The experimental findings showed that adsorption is favorable at lower pH. Isotherm studies were conducted and the data indicated that Langmuir isotherm was well fitted to the adsorption process and the pseudo-second-order model was more preferable in simulating the kinetic process. In essence, Dillenia Indica peel activated carbon was proven as being a favourable adsorbent for the uptake of ketoprofen in batch mode.

Download Full-text

Adsorption Capabilities of Activated Carbon Derived from Detarium microcarpum Seeds in Removing Co2+ and Pb2+ from Wastewater

Earthline Journal of Chemical Sciences ◽

10.34198/ejcs.3220.167179 ◽

2020 ◽

pp. 167-179

Author(s):

Ishaq Yahaya Lawan ◽

Shinggu D. Yamta ◽

Abdurrahman Hudu ◽

Kolo Alhaji Madu ◽

Adamu Mohammad ◽

...

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Metal Ion ◽

Adsorption Process ◽

Ion Concentration ◽

Adsorption Efficiency ◽

Cobalt Ions ◽

Initial Concentration ◽

Detarium Microcarpum ◽

Percentage Removal

This study was carried out to evaluate the efficiency of metals (Pb and Co) removal from solution using Detarium microcarpum seeds as adsorbent. The effect of initial concentration and adsorbent dosage on the adsorption process of these metals were studied, the percentage removal of these metals increased with increased in weight (0.5 -2.5g) in 50ml of the solution and the adsorption efficiency increased with increasing initial metal ion concentration (0.01-0.05 moldm−3). The percentage removal obtained for Lead and Cobalt were compared. The result of adsorption were fitted to Langmuir models and coefficients indicated favorable adsorption of Pb2+ and Co2+ ions on the adsorbents. The adsorption of Pb2+ and Co2+ in aqueous solution was in the following order (1400µm>420µm>150µm). More than 55.4% of studied Lead cations were removed by 1400µm, 47.2% by 420µm and 29.8% by 150µm. While for Cobalt cations only 53.2% by 1400µm, 38.6% by 420µm and 24% by 150µm respectively, from aqueous solution it was concluded that, activated Carbon derived from Detarium microcarpum seed is good in removing both lead and cobalt ions, which make it good absorbent.

Download Full-text

Removal of methylene blue from aqueous solution using cocoa (Theobroma cacao) nib-based activated carbon treated with hydrochloric acid

Malaysian Journal of Fundamental and Applied Sciences ◽

10.11113/mjfas.v14n2.770 ◽

2018 ◽

Vol 14 (2) ◽

pp. 193-197 ◽

Cited By ~ 2

Author(s):

Mohd Sukri Hassan ◽

Khairul Adli Nikman ◽

Fisal Ahmad

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Activated Carbon ◽

Chemical Activation ◽

Batch Adsorption ◽

Activation Process ◽

Order Model ◽

Experimental Isotherm ◽

Pseudo Second Order ◽

Adsorptive Properties

Chemical activation process was applied to prepare a cocoa nib-based activated carbon using potassium carbonate (K2CO3). The performance of the activated carbon in removing Methylene Blue from aqueous solution was investigated by batch adsorption studies. The adsorptive properties were studied in terms of initial concentration (C0: 100-300 mg/L) and contact time effects. The experimental isotherm data fitted well the Langmuir and Temkin models. The adsorption kinetic followed the pseudo-second-order model and Boyd model explained the mechanism of adsorption. The results indicate that the chemically produced activated cocoa nib carbon has significant potential to be used as an adsorbent material for adsorption of Methylene Blue from aqueous solution.

Download Full-text

Adsorptive Performance of Polypyrrole-Based KOH-Activated Carbon for the Cationic Dye Crystal Violet: Kinetic and Equilibrium Studies

Adsorption Science & Technology ◽

10.1155/2021/5527594 ◽

2021 ◽

Vol 2021 ◽

pp. 1-11

Author(s):

Abdulaziz Ali Alghamdi ◽

Abdel-Basit Al-Odayni ◽

Naaser A. Y. Abduh ◽

Safiah A. Alramadhan ◽

Mashael T. Aljboar ◽

...

Keyword(s):

Activated Carbon ◽

Crystal Violet ◽

Adsorption Process ◽

Industrial Effluent ◽

Batch Adsorption ◽

Maximum Adsorption Capacity ◽

Equilibrium Studies ◽

Equilibrium Data ◽

Pseudo Second Order ◽

Rate Controlling Step

The aim of this work was to investigate the adsorptive performance of the polypyrrole-based KOH-activated carbon (PACK) in the removal of the basic dye crystal violet (CV) using a batch adsorption system. The equilibrium data, obtained at different initial CV concentrations ( C 0 = 50 – 500 mg / L ) and temperatures (25–45°C), were interpreted using the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms, with the Langmuir model providing a better fit ( R 2 ≥ 0.9997 ) and a maximum adsorption capacity of 497.51 mg/g at 45°C. Under the examined conditions, the values of the thermodynamic parameters free energy, enthalpy, and entropy indicate a spontaneous, endothermic, and physisorption adsorption process. The kinetic data of the adsorption process were very well described by a pseudo-second-order model ( R 2 ≥ 0.9996 ). However, surface diffusion seems to be the main rate-controlling step. Thus, we concluded that PACK shows commercial potential for the removal of cationic dyes such as CV from industrial effluent.

Download Full-text

Removal of fluoride from an aqueous solution by batch and column process using activated carbon derived from iron infused Pisum sativum peel: characterization, Isotherm, kinetics study

Environmental Engineering Research ◽

10.4491/eer.2020.241 ◽

2020 ◽

Vol 26 (4) ◽

pp. 200241-0

Author(s):

Naincy Sahu ◽

Chandra Bhan ◽

Jiwan Singh

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Pisum Sativum ◽

Freundlich Isotherm ◽

Adsorptive Capacity ◽

Fluoride Removal ◽

Batch Adsorption ◽

Waste Biomass ◽

X Ray Diffraction ◽

Pseudo Second Order

The present study investigated the adsorption efficiency of magnetic activated carbon was synthesized by waste biomass of Pisum sativum (peel) and pyrolysis at 500˚C temperature (MPPAC-500). Derived activated carbon was applied for removal of fluoride from aqueous solution. The MPPAC-500 was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), zeta potential, X-ray Diffraction (XRD) and Particle Size Analyser. The fluoride sequestration study was performed in both batch and column systems. The batch adsorption study was focused on parameter like, adsorbent dose, contact time, pH and initial fluoride concentrations. The maximum capacity of fluoride removal was qo = 4.71 (mg/g). Freundlich isotherm model (R2 -0.995) obeyed better than Langmuir (R<sup>2</sup> -0.979) model. The RL values observed between 0-1 (RL-0.057) inferred the favourable adsorption. Pseudo-second-order model favoured well than pseudo-first-order in the whole experimental data. In case of column study was performed at two different bed height 5 cm and 10 cm having flow rate of 5 mL/min as well as 10 mL/min. The breakthrough curve and column data were interpreted by Thomas, Adams-Bohart, Yoon-Nelson and Clark model. These finding showed that MPPAC-500 has potential adsorptive capacity for fluoride removal from aqueous solutions in batch and column systems.

Download Full-text

Activated Carbon for Dyes Removal: Modeling and Understanding the Adsorption Process

Journal of Chemistry ◽

10.1155/2020/2096834 ◽

2020 ◽

Vol 2020 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Y. El maguana ◽

N. Elhadiri ◽

M. Benchanaa ◽

R. Chikri

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Methyl Orange ◽

Adsorption Process ◽

Second Order ◽

Prickly Pear ◽

Order Model ◽

Seed Cake ◽

Pseudo Second Order ◽

Dyes Removal

Batch adsorption experiments have been conducted to investigate the removal of methyl orange from aqueous solution by an activated carbon prepared from prickly pear seed cake by phosphoric acid activation. The adsorption process has been described by using kinetic and isotherm models. The kinetic of adsorption was examined by pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. Adsorption isotherm was modeled using Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherms. The adsorption process of methyl orange was well explained by the pseudo-second-order model and Freundlich isotherm. Also, pseudo-n-order model has been applied to estimate the order of adsorption kinetic and it was found equal to 2 which confirm the good accuracy of the pseudo-second order. Moreover, Dubinin–Radushkevich isotherm reveals that the adsorption of methyl orange onto activated carbon was a physisorption process in nature. The adsorption capacity of activated carbon was found to be 336.12 mg/g at temperature 20°C and pH∼7. These results demonstrated that the prickly pear seed cake is a suitable precursor for the preparation of appropriate activated carbon for dyes removal from aqueous solution.

Download Full-text