Adsorption of Malachite Green from Aqueous Solutions by PNSBP: Equilibrium, Kinetic and Thermodynamic Studies

Enenebeaku, Conrad K.; Okorocha, Nnaemeka John; Enenebeaku, Uchechi E.; Okolie, Justus Ifeanyi; Basil, Anukam

doi:10.9790/5736-0909012838

Cited by 4 publications

(9 citation statements)

References 14 publications

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“…It can be observed that there was a rapid removal in the first minutes and it proceeds slowly until optimum adsorption (equilibrium time) at 90 minutes for GS and 120 minutes for SH. Similar result has been reported for the adsorption of MB onto Neem leaves powder [7]. It can be inferred from the rapid sorption rate at the initial stages that there was abundance of active sites on the external surface of the biosorbent which resulted in the rapid MB dye removal.…”

Section: Effect Of Contact Time For Methyl Blue Dyesupporting

confidence: 85%

“…The increase in initial dye concentration enhances the interaction between dye and adsorbent. In another word, increase in the initial dye concentrations increase the driving force to overcome the resistance of the mass transfer of dye between the solution and the adsorbent [7]. Furthermore, it can be seen that with an increase of dye concentration from 10 to 50 mg/L, the adsorption capacity (qe) increases from 0.063 to 2.137 mg/g.…”

Section: Effect Of Initial Dye Concentrationmentioning

confidence: 97%

“…A stock solution of dye of concentration 1000mg/l was prepared by dissolving 1 g of powdered dye in 1 L of distilled water. An experimental dye solution of desired concentration was obtained by appropriate dilution of the stock solution [7].…”

Section: Preparation Of Adsorbent Solutionsmentioning

confidence: 99%

“…0.1 g of each adsorbent will be encapsulated with 1 g of KBr spectroscopy grade and by introducing the mix in a piston's cell of a hydraulic pump with compression pressure 15 KPa/cm2; the solid translucent disk will be obtained which will introduce in an oven for 4hrs at 1050C to ensure the non-interference of any existing water vapors or CO2 molecules. The FTIR spectrum will then be record within the wave number range 4000 -450 cm-1 [7].…”

Section: Adsorbent Characterizationmentioning

confidence: 99%

“…kinetics equation based on concentration of solution and adsorption capacity of solid, Lagergren's first order rate equation has been called pseudo-first order. The linear form of the pseudofirst-order kinetic mode is represented by: [7] ln(𝑞𝑞 𝑒𝑒 − 𝑞𝑞 𝑡𝑡 ) = 𝑅𝑅𝑙𝑙𝑞𝑞 𝑒𝑒 − 𝑘𝑘 1 𝑡𝑡 … (3) Where qe and qt are the values of amount of the dye adsorbed per unit mass on the adsorbent at equilibrium and at various time t, respectively, k1 is the Pseudo-first-order adsorption rate constant (min-1). The values of k1 and calculated qe can be determined from the slope and intercept respectively, of the linear plot of ln (qe -qt) versus t.…”

Section: The Kinetics Experiments Were Conducted By Similar To Those ...mentioning

confidence: 99%

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Adsorption Equilibrium and Kinetic Studies of Methylene Blue Dye Using Groundnut Shell and Sorghum Husk Biosorbent

Hammari

Abubakar

Misau

et al. 2020

J Environ Bioremed Toxicol

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The Groundnut Shell (GS) and Sorghum Husk (SH) was used as an adsorbent for adsorption of Methylene Blue (MB) dye. The adsorbent was characterized using FTIR and Proximate analysis, Fourier transforms infrared spectroscopy (FTIR) spectrum showed the presence of absorption bands typical of a plant-based biomaterial. The effects of various experimental parameters, such as initial dye concentration, and contact time on the adsorption extent were investigated. The results showed that the percentage removal of MB dye was increased by increasing the concentrations of dye. The dye concentration was determined by spectrophotometry. Langmuir, Freundlich, Temkin and Harkins and Jura models were used to representing the equilibrium data. The Langmuir model was more adequate to represent the equilibrium data for MB with GS, whereas the Temkin model fitted well to both GS and SH for MB. The maximum adsorption capacity was found to be 7.052 mg/g and 15.3846 mg/g for GS and SH, respectively with MB dye. Adsorption data were modelled using the pseudo-first and pseudo-second-order kinetic equations, power function and Elovich models. It was seen that the pseudo-second-order kinetic equation could best describe the sorption kinetics for all the adsorption processes. It was concluded that GS and SH adsorbent can be utilized as an efficient low-cost adsorbent for removal of Methylene Blue dye.

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Section: Effect Of Contact Time For Methyl Blue Dyesupporting

confidence: 85%

Section: Effect Of Initial Dye Concentrationmentioning

confidence: 97%

Section: Preparation Of Adsorbent Solutionsmentioning

confidence: 99%

Section: Adsorbent Characterizationmentioning

confidence: 99%

Section: The Kinetics Experiments Were Conducted By Similar To Those ...mentioning

confidence: 99%

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Adsorption Equilibrium and Kinetic Studies of Methylene Blue Dye Using Groundnut Shell and Sorghum Husk Biosorbent

Hammari

Abubakar

Misau

et al. 2020

J Environ Bioremed Toxicol

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A Preliminary Study on the Potential Dye Adsorbance by Activated Meretrix lamarckii (M. lamarckii) Shells

Subki

Han

2020

IOP Conf. Ser.: Earth Environ. Sci.

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Dyestuff manufacturing and consuming industry have led to water pollution through their discharge of untreated wastewater. Presence of dye pigments in water bodies may cause carcinogenic, mutagenic effects and caused harm to the entire aquatic ecosystem. This research has carried out to examine the adsorption potential of treated Meretrix lamarckii (M. lamarckii) shells towards Malachite Green (MG) dye removal. Activation with hydrochloric acid (HCl) and potassium hydroxide (KOH) was used for the conversion of seashells into TS1 and TS2 respectively. Following that, batch adsorption studies were carried out at 30°C using TS1 and TS2 to study the effect of contact time, pH, initial concentration of adsorbate and adsorbent dosage on dye removal percentage. The optimized contact time for TS1 was 210 minutes, with the best performance in pH 10 aqueous medium, 10 mg/L initial concentration of MG and optimum dosage of 1.0 g. Whereas for TS2, the optimized contact time was shorter than TS1, which was only 90 minutes to attain equilibrium state. The optimized pH and initial concentration of adsorbate were the same as TS1. While optimized adsorbent dosage for TS2 was lower than that of TS1, which was 0.8 g. Based on the results obtained, TS2 was found to be more effective in MG dye removal than TS1. High efficiency of TS2 was due to the presence of alkyl halide group and its larger total surface area. From the study, it can be concluded that treated M. lamarckii possesses high adsorption efficiency and potential to become a new introduce adsorbent in wastewater treatment technology.

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Thermodynamic Adsorption Studies of Activated Carbon From Coconut Shell Using Methyl Orange Dye

Danazumi,

Sani,

Usman

et al. 2024

FJS

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The present work evaluates the prepared coconut shell activated carbon (CSAC) using chemical activation as an adsorbent in removing Methyl orange (MO) dye from aqueous solution. Batch Adsorption experiments were conducted to determine the effectiveness of the CSAC as an adsorbent. The maximum adsorption capacity of 3.0 mgg -1 and the maximum %Removal of 99.8 were attained at optimum conditions of 6 gL -1 adsorbent dosage, contact time of 80 min, and at temperature of 330 K. the results obtained from enthalpy (∆H ⸰ = 46.4 KJ/mol) and Gibb's free energy of adsorption ∆G ⸰ = -3.62KJ/mol, -5.03 KJ/mol, -6.65 KJ/mol and -8.59 KJ/mol at 300 K, 310 K, 320 K and 330 K respectively, which concluded that, thermodynamic parameters show the adsorption process was exothermic, spontaneous and feasible in nature. The examination of the experimental data accord with Langmuir adsorption isotherm.

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Adsorption of Malachite Green from Aqueous Solutions by PNSBP: Equilibrium, Kinetic and Thermodynamic Studies

Abstract: The objective of this project work is to study the adsorption of Malachite Green dye using

Cited by 4 publications

References 14 publications

Adsorption Equilibrium and Kinetic Studies of Methylene Blue Dye Using Groundnut Shell and Sorghum Husk Biosorbent

Adsorption Equilibrium and Kinetic Studies of Methylene Blue Dye Using Groundnut Shell and Sorghum Husk Biosorbent

A Preliminary Study on the Potential Dye Adsorbance by Activated Meretrix lamarckii (M. lamarckii) Shells

Thermodynamic Adsorption Studies of Activated Carbon From Coconut Shell Using Methyl Orange Dye

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