Kinetics and thermodynamics study of lead adsorption on to activated carbons from coconut and seed hull of the palm tree

Gueu, Soumahoro; Yao, Benjamin; Adouby, Kopoin; Ado, G.

doi:10.1007/bf03325956

Cited by 174 publications

(86 citation statements)

References 7 publications

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“…From the first, the equilibrium sorption capacities of lead ion were determined and found to be respectively 4.38 and 3.77 mg/g for CA and GA at 60 C°. The maximum adsorptions were obtained at 60 C°, pH 4 and with a Pb initial concentration of 100 mg/l [8]. …”

Section: Introductionmentioning

confidence: 95%

Removal of Heavy Metals from Aqueous Solution by Using Low Cost Rice Husk in Batch and Continuous Fluidized Experiments

Al-Baidhani¹,

Al-Salihy²

2016

IJCEA

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Abstract-This study aims to evaluate the performance efficiency of the proposed adsorbent (rice husk). The adsorptive capacity and removal efficiency of the rice husk were evaluated for the removal of heavy metals of (Cd, Pb and Cr) from aqueous solutions. The results showed the following removal efficiencies: (97.96% for Cd, 90% for Pb, and 84% for Cr). Adsorbent loading capacities for cadmium determined by batch studies were verified through continuous column experiments (fluidized bed). It was found that the maximum adsorption capacity of the candidate adsorbent (5.54) mg/g in Cd batch system. A set of equilibrium isothermal experiments were conducted and fitted with two models; Langmuir and Freundlich. The equilibrium isotherms of rice husk were found to be of a favorable type and Freundlich isotherm model gave the best fit to represent the experimental data of this system with correlation coefficient equals to 0.9934. Eleven continuous experiments were carried out in fluidized bed column to study the effect of initial concentrations, bed depth and flow rate on the performance of adsorption process. Also it was made a comparison between the efficiency of the rice husk adsorbent in removing of Cd(II) with the well-known adsorbent of activated carbon in continuous fluidized bed process. The results proved that the rice husk to be an efficient and economic adsorbent for the removal of different heavy metals from wastewater.Index Terms-Heavy metals, adsorption, rice husk, batch experiment, continuous fluidized bed experiments.

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Section: Introductionmentioning

confidence: 95%

Removal of Heavy Metals from Aqueous Solution by Using Low Cost Rice Husk in Batch and Continuous Fluidized Experiments

Al-Baidhani¹,

Al-Salihy²

2016

IJCEA

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“…It shows that the NSSCAC studied in this work has a very large adsorption capacity. Activated carbon from Seed hull of the palm tree (GA) 3.77 Gueu et al, 2007 …”

Section: Figure 4: Langmuir Adsorption Isothermmentioning

confidence: 99%

Kinetics and equilibrium studies of Pb2+ in removal from aqueous solutions by use of nano-silversol-coated activated carbon

Kumar¹,

Vincent²,

Kirthika³

et al. 2010

Braz. J. Chem. Eng.

142

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-The ability of nano-silversol-coated activated carbon (NSSCAC) to adsorb Pb 2+ from aqueous solution has been investigated through batch experiments. The adsorption of lead onto NSSCAC has been found to depend on adsorbent dose, initial concentration and contact time. The experiments were carried out at natural solution pH. Equilibrium data fitted well with the Langmuir model and Freundlich model with a maximum adsorption capacity of 23.81 mg of Pb/g of NSSCAC. The experiments showed that the highest removal rate was 92.42% for Pb 2+ under optimal conditions. The sorption of Pb 2+ on NSSCAC was rapid during the first 30 min and the equilibrium attained within 60 min. The kinetic processes of Pb 2+ adsorption on NSSCAC were described by applying pseudo-first-order and pseudo-second-order kinetic models. The kinetic data for the adsorption process obeyed a pseudo-second-order kinetic model, suggesting that the adsorption process is chemisorption. The NSSCAC investigated in this study showed good potential for the removal of Pb 2+ from aqueous solution.

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“…Heavy metal ions are released into water from many industries such as mining, chemical manufacturing, battery manufacturing, electroplating, coating and pigment [1], [2]. Cadmium (Cd (II)) and Zinc (Zn (II)) are common pollutants widely found in industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

Isotherm, Kinetic and Thermodynamic Studies on the Adsorption of Cd (II) and Zn (II) ions from Aqueous Solutions onto Bottom Ash

Sukpreabprom¹,

Arquero²,

Naksata³

et al. 2014

IJESD

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Abstract-Bottom ash is a waste material obtained from electricity generation through combustion of coal at the Mae Moh power plant in Thailand. The adsorption of Cd (II) and Zn (II) ions from aqueous solutions onto bottom ash was studied using batch experiments. The effect of pH, contact time and temperature were investigated. Adsorption isotherm data for metal ions was analyzed by the Langmuir and Freundlich isotherms. The Freundlich isotherm properly described the adsorption data for all studied temperatures. The results revealed that the adsorption kinetics followed pseudo-second-order kinetic model. Thermodynamic parameters such as Gibbs free energy change (∆G°), enthalpy change (∆H°) and entropy change (∆S°) were investigated. The calculated values showed that the adsorption process for both Cd (II) and Zn (II) ions was endothermic.

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Kinetics and thermodynamics study of lead adsorption on to activated carbons from coconut and seed hull of the palm tree

Cited by 174 publications

References 7 publications

Removal of Heavy Metals from Aqueous Solution by Using Low Cost Rice Husk in Batch and Continuous Fluidized Experiments

Removal of Heavy Metals from Aqueous Solution by Using Low Cost Rice Husk in Batch and Continuous Fluidized Experiments

Kinetics and equilibrium studies of Pb2+ in removal from aqueous solutions by use of nano-silversol-coated activated carbon

Isotherm, Kinetic and Thermodynamic Studies on the Adsorption of Cd (II) and Zn (II) ions from Aqueous Solutions onto Bottom Ash

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