Investigation of dye adsorption onto activated carbon from the shells of Macoré fruit

Aboua, Kouassi Narcisse; Yobouet, Yao Augustin; Yao, Kouassi Benjamin; Gone, Droh Lanciné; Trokourey, Albert

doi:10.1016/j.jenvman.2015.03.006

Cited by 134 publications

(45 citation statements)

References 19 publications

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“…Whereas the initial adsorption rate h (mg/ g min) was calculated as per Eq. (13) and it varied with adsorbent dose where the overall rate constant increased with the adsorbent dose. Also, from Table 4, the linear regression coefficients (R 2 ) values were above 0.97 and Chi square (χ 2 ) values were lower than 0.045 which suggested the applicability of this model.…”

Section: Pseudo-first-order and Pseudo-second-order Kinetic Modelsmentioning

confidence: 99%

“…Generally, agriculture solid waste materials have little or no economic value and often present a disposal problem [9]. There are many reported agriculture solid waste-based bio-char and activated carbon used in the removal of various dyes such as Methylene Blue and Acid orange by bamboo bio-char [10], Reactive Violet by Cocoa shell activated carbon [11], Congo Red by pine cone-based activated carbon [12], Methylene Blue and Methylene Orange by Macore fruit activated carbon [13] and Acid Blue by waste tea activated carbon [14,15]. Readers are encouraged to go through these review articles.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption removal of Methylene Blue (MB) dye from aqueous solution by bio-char prepared from Eucalyptus sheathiana bark: kinetic, equilibrium, mechanism, thermodynamic and process design

Dawood

Sen

Phan

2016

Desalination and Water Treatment

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A B S T R A C TEucalyptus bark (EB) materials-based bio-char adsorbent was synthesised and characterised using SEM-EDS, BET and CHN analyser. The adsorbent surface functional groups were determined by FT-IR analyser. Various textural characteristics such as BET surface area, pore size, bulk density, point of zero charge were also determined. The adsorption potential of these bio-char for the removal of cationic dye Methylene Blue (MB) from aqueous solution was studied. The effects of various temperature profiles on the production of EB biochar were studied and the most efficient temperature profile was identified at 500˚C. Batch adsorption kinetic study showed that the amount of dye adsorbed q t (mg/g) depends on various physicochemical process parameters such as initial solution pH, dye concentration, temperature, adsorbent dose, salt concentration and presence of SDS surfactant. It was found that the extent of MB dye adsorption by EB bio-char increased with the increase of initial dye concentration, contact time, temperature, SDS surfactant concentration and solution pH, but decreased with the increase of adsorbent dose and salt concentration. The optimum adsorption conditions were found at the initial dye concentration of 100 mg/L, initial solution pH of 11.3, adsorbent dose of 10 mg and solution temperature of 55˚C. Furthermore, pseudo-first-order, pseudo-second-order and intra-particle diffusion models were fitted to examine the adsorption kinetics and mechanism of adsorption. Equilibrium data were best represented by Langmuir isotherm model and gives a monolayer effective adsorption capacity of bio-char which is comparative to other adsorbents including commercial activated carbon. Thermodynamic parameters suggested that the adsorption was an endothermic, spontaneous and physical in nature. Furthermore, a single-stage batch adsorber design for the MB dye onto EB bio-char particles were presented based on the Langmuir isotherm model equation. These results indicated EB biomass as good and cheap precursor for the production of an effective and environmental friendly bio-char adsorbent.

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Section: Pseudo-first-order and Pseudo-second-order Kinetic Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption removal of Methylene Blue (MB) dye from aqueous solution by bio-char prepared from Eucalyptus sheathiana bark: kinetic, equilibrium, mechanism, thermodynamic and process design

Dawood

Sen

Phan

2016

Desalination and Water Treatment

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“…This may be due to an increase in the availability of surface active centers. The same observation is also reported in literature [25] [26]. A contact time of 3 h and the dosage of activated carbon of 4 g·L −1 , were thus considered for the following runs.…”

Section: Effect Of Adsorbent Dosagementioning

confidence: 87%

“…Table 4 shows that the adsorption data for activated carbon were found to fit with Freundlich model having a correlation coefficient of 0.973. The Freundlich adsorption equation assumes that a multi-layer adsorption could occur on the surface of the adsorbent [26]. The value of n obtained (n > 1) indicates that BPB is adsorbed on the activated carbon.…”

Section: ) Freundlich Isothermmentioning

confidence: 99%

Adsorption Kinetics and Thermodynamics Study of Butylparaben on Activated Carbon Coconut Based

Atheba¹,

Allou²,

Drogui³

et al. 2018

JEAS

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In this work, low cost coconut biochar based activated carbon (CBAC) was used for adsorption of Butylparaben (BPB) from aqueous medium. The prepared CBAC was characterized using BET, Boehm analysis and the adsorption equilibrium, kinetics and thermodynamics studies of BPB adsorption were carried out. During batch adsorption runs, the effects of factors, such as contact time (0 -300 min), CBAC dose (200 -800 mg), pH (3 -11) and solution temperatures (303 -348 K) were investigated on BPB removal. Experimental results reveal that the BPB removal efficiency on CBAC is higher than 97% under acidic and neutral conditions. Equilibrium data were fitted by Langmuir, Freundlich and Temkin isotherm models with correlation coefficient more than 0.9. The pseudo-second order kinetic model was observed to fit well the adsorption data. Thermodynamic analysis shows positive values of standard Gibb's free energy, suggesting the non-spontaneity of the process. The changes in enthalpy (0.2 J·mol −1 ) and entropy (19 J·mol −1 ) were found to be endothermic with an increase of randomness. The high adsorption efficiency of the synthesized coconut biochar materials with low cost indicates that it may be a promising adsorbent for removing organic compounds.

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“…In recent years, properties of dyes solution as their visibility and recalcitrance generate problem for various industries such as manufacturing of fabrics, paper, silk, cotton, cosmetics and textile [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] in order to color their products [4,6,10,[17][18][19][20][21][22][23][24][25][26][27][28]. Wastewater contaminated by synthetic azo-dyes have complex aromatic molecular structure which make them inert and biodegradable [12,[14][15][29][30][31] difficult when discharged into the environment [3, 5, 8, 10-11, 16, 26] if not being removed properly [13,27,[32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Application of Agricultural Wastes Activated Carbon for Dye Removal – An Overview

2017

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Abstract. Dyes are an important class of pollutants and can even be identified by the human eyes. Disposal of dyes in precious water resources must be avoided especially those that are not easily biodegradable, however, and for that various treatment technologies are in use. Among various methods adsorption occupies a prominent place in dye removal. The growing demand for efficient and low-cost treatment methods and the importance of adsorption has given rise to agricultural waste. This review highlights and provides an overview of these activated carbons prepared by non-woody and woody materials and their application for dyes removal. From a comprehensive literature review, it was found that many researchers used non-woody material as activated carbons to removal dye contaminants.

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Investigation of dye adsorption onto activated carbon from the shells of Macoré fruit

Cited by 134 publications

References 19 publications

Adsorption removal of Methylene Blue (MB) dye from aqueous solution by bio-char prepared from Eucalyptus sheathiana bark: kinetic, equilibrium, mechanism, thermodynamic and process design

Adsorption removal of Methylene Blue (MB) dye from aqueous solution by bio-char prepared from Eucalyptus sheathiana bark: kinetic, equilibrium, mechanism, thermodynamic and process design

Adsorption Kinetics and Thermodynamics Study of Butylparaben on Activated Carbon Coconut Based

Application of Agricultural Wastes Activated Carbon for Dye Removal – An Overview

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