Gas Chromatographic Prediction of Equilibrium Phase Atrazine after Sorption onto Derived Activated Carbon

Itodo, A. U.; Abdulrahman, F W; Hassan, L. G.; Maigandi, S. A.; Itodo, Happiness Ugbede

doi:10.3923/ijps.2009.1174.1182

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…where N is the number of data points [11]. The coefficient of determination value for the pseudo second order (R 2 = 0.984) is higher compared to that of the pseudo first order kinetic model (R 2 , 0.498).…”

Section: Adsorption Kineticsmentioning

confidence: 98%

“…These fixed initial MR concentration were in separate conical flask, stirred using a mechanical shaker for 30, 60, 90, 120, 150, and 180 minutes contact time. Mixtures were filtered using wattman filter paper [11]. Absorbance of filtrate was taken using Surgispec 5M7F25 model spectrophotometer at an already predetermined wavelength of 617 nm.…”

Section: Batch Kinetic Studiesmentioning

confidence: 99%

“…K n unit are min -1 and gmg min -1 first order n = 1 and second order, n = 2 kinetics, respectively [11,15]. This generalization is simplified by the Lagergren model proposed in 1989 to assume first order kinetics which is linearly represented as Equation (3) …”

Section: Introductionmentioning

confidence: 99%

“…where k 1 and k 2 stands for the pseudo first and second order rate constants respectively and were determined by regression analysis by fitting on a number of experimenttal data point, plotting log (q e q t ) versus t and t/q against t. q e was calculated for each model and compared with its experimental value for precision validity test [11]. Equation (4) can be rearranged as Equation (5).…”

Section: Introductionmentioning

confidence: 99%

“…The relationship between the amount of adsorbate adsorbed onto the adsorbent surface and the equilibrium concentration of the adsorbate in solvent at equilibrium at a constant temperature may be estimated by various adsorption isotherm models. The amount of Dye at equilibrium, q e is calculated from the mass balance equation given in Equation (1) [11].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Pseudo Constants for Methyl Red Sorption: A Rate Study of Received and Derived Activated Carbon

Itodo¹,

Abdulrahman²,

Usman³

et al. 2011

JEAS

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This effluent remediation research on discoloration tends to disagree with the use of commercial activated carbon as received from manufacturers. Product specification and authentication is a key task to chemists and scientist. Here, Batch kinetic studies via pseudo approximations treatments was adopted to to investigate the rate of Methyl Red (MR) dye solution uptake onto carbon animalis earlier received as Granulated Activated Carbon (GAC) and later formulated as Powdered Activated Carbon (PAC). The rate of dye uptake was studied with data fitted in to the Lagergren's pseudo first and second order kinetic models. Justification by the R 2 values (0.984) for GACgreater than 0.865 for PAC, low statistical error (SSE%) range of 1.065 -2.310 and closeness between the experimented and calculated qe values all favored the second order kinetic model. The deviation of the line from the origin further showed that intra-particle transport is not the only rate limiting step. Generally the research supported the manufacturer's choice of particle size (as GAC and not PAC) for the chosen adsorbate.

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Section: Adsorption Kineticsmentioning

confidence: 98%

Section: Batch Kinetic Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Pseudo Constants for Methyl Red Sorption: A Rate Study of Received and Derived Activated Carbon

Itodo¹,

Abdulrahman²,

Usman³

et al. 2011

JEAS

View full text Add to dashboard Cite

show abstract

Biosorption of formic and acetic acids from aqueous solution using activated carbon from shea butter seed shells

Adekola

Oba

2016

Appl Water Sci

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The efficiency of prepared activated carbon from shea butter seed shells (SB-AC) for the adsorption of formic acid (FA) and acetic acid (AA) from aqueous solution was investigated. The effect of optimization parameters including initial concentration, agitation time, adsorbent dosage and temperature of adsorbate solution on the sorption capacity were studied. The SB-AC was characterized for the following parameters: bulk density, moisture content, ash content, pH, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The optimal conditions for the adsorption were established and the adsorption data for AA fitted Dubinin-Radushkevich (D-R) isotherm well, whereas FA followed Langmuir isotherm. The kinetic data were examined. It was found that pseudo-second-order kinetic model was found to adequately explain the sorption kinetic of AA and FA from aqueous solution. It was again found that intraparticle diffusion was found to explain the adsorption mechanism. Adsorption thermodynamic parameters were estimated and the negative values of DG showed that the adsorption process was feasible and spontaneous in nature, while the negative values of DH indicate that the adsorption process was exothermic. It is therefore established that SB-AC has good potential for the removal of AA and FA from aqueous solution. Hence, it should find application in the regular treatment of polluted water in aquaculture and fish breeding system.

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The effects of alkalinity and acidity of process water and hydrochar washing on the adsorption of atrazine on hydrothermally produced hydrochar

Flora

et al. 2013

Chemosphere

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Gas Chromatographic Prediction of Equilibrium Phase Atrazine after Sorption onto Derived Activated Carbon

Cited by 6 publications

References 3 publications

Pseudo Constants for Methyl Red Sorption: A Rate Study of Received and Derived Activated Carbon

Pseudo Constants for Methyl Red Sorption: A Rate Study of Received and Derived Activated Carbon

Biosorption of formic and acetic acids from aqueous solution using activated carbon from shea butter seed shells

The effects of alkalinity and acidity of process water and hydrochar washing on the adsorption of atrazine on hydrothermally produced hydrochar

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