Étude cinétique et thermodynamique de l’adsorption d’un colorant basique sur la sciure        de bois

Belaid, Kumar Djamel; Kacha, S.

doi:10.7202/1006107ar

Cited by 37 publications

(23 citation statements)

References 20 publications

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“…The second is the diffusion through the interparticle spaces (external diffusion). The third relates to the intraparticle diffusion, and finally is the chemical reaction surface between the surface features of the adsorbent and the active groups of the phenol [23].…”

Section: Study Of Diffusion Processesmentioning

confidence: 99%

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Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Chraibi¹,

Moussout²,

Boukhlifi³

et al. 2016

JEAS

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Calcined eggshells (CES) were tested as adsorbent at a low cost for the removal of phenol from the waste water. The shells of Eggs extracts from waste were washed and then dried at a temperature of 60˚C and finally calcined in an oven at the atmospheric air in several temperatures 200˚C, 400˚C, 600˚C, 800˚C, 1000˚C. The chemical composition of the obtained adsorbs was analyzed by the X-ray diffraction. The isothermal study of adsorption of the phenol was realized for the various adsorbates. It showed that the biggest efficiency of the elimination was attributed to the calcined eggshells to 1000˚C with a percentage that reached 37%. The kinetics of adsorption were described by the first rate model. The intra particular distribution is a significant step in the adsorption process of phenol on calcined eggshells (CES). The separation factor gives a favorable adsorption of phenol on the CES.

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Section: Study Of Diffusion Processesmentioning

confidence: 99%

“…2) Intra-particular diffusion process The intra-particular diffusion kinetics phrase is often simply presented by equation [23]:…”

Section: ) External Diffusion Processmentioning

confidence: 99%

Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Chraibi¹,

Moussout²,

Boukhlifi³

et al. 2016

JEAS

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“…We adopted five (05) kinetic models that are: pseudo-first order (PPO), pseudo-second order (PSO) models, external diffusion, intraparticular scattering and Elovich model. [9,10] …”

Section: Modeling Of Adsorption Kineticsmentioning

confidence: 99%

Evaluation of Adsorption Capacity of Methylene Blue in Aqueous Medium by Two Adsorbents: The Raw Hull of <i>Lophira Lanceolata</i> and Its Activated Carbon

Sogbochi¹,

Balogoun²,

Dossa³

et al. 2017

AJPC

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Abstract:The purpose of this study is to evaluate the adsorption capacity of two adsorbents from the lignocellulosic residues of Lophira Lanceolata. The raw hull of Lophira Lanceolata and its activated carbon produced by chemical activation with orthophosphoric acid (H 3 PO 4 ) at 50% (Vacid/V water ) of the said hull. The ratio of impregnation to orthophosphoric acid used is 4.5. Activation and carbonization were carried out at 400°C. The physicochemical properties of the prepared activated carbon were determined and methylene blue adsorption tests were performed. On the basis of the results obtained, the iodine test revealed that the activated carbon produced had a microporosity of 646.81 mg/g, a density of 0.3156, a moisture content of less than 15% and ash content equal to 2%. Regarding the adsorption, results showed that methylene blue (100 ppm) adsorbed more easily on the activated carbon produced than on the crude residues with respective contact time of 10 minutes and 40 minutes. The removal rate was of the order of 100% for the activated carbon and of 83.56% for the raw hulls. Furthermore, an influence of the mass of the support, of the initial concentration and of the pH on the kinetics and on the adsorption capacity was observed. Kinetics obeyed to the pseudo-second order model; the diffusion was intra-particular and the Freundlich and Langmuir models satisfactorily described the adsorption of methylene blue respectively on the crude residues and on the produced activated carbon.

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“…The Lagergren pseudo-first-order [47], pseudo-second-order [48] and intra-particle models [49] were used in this study to evaluate the adsorption of ARS on PhR/NC-1 as composite carbon. The respective equations are reported in Table 3, where q e and q t were the adsorption capacity of PhR/NC-1 at equilibrium and during a contact time t. K 1 and K 2 are the pseudo-first-order and pseudo-second-order kinetics constants, respectively.…”

Section: Kinetic Modelmentioning

confidence: 99%

Green Carbon Composite-Derived Polymer Resin and Waste Cotton Fibers for the Removal of Alizarin Red S Dye

Wanassi

Hariz²,

Ghimbeu

et al. 2017

Energies

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Phenolic resin and waste cotton fiber were investigated as green precursors for the successful synthesis using a soft template approach of a composite carbon with carbon nanofibers embedded in a porous carbon network with ordered and periodically pore structure. The optimal composite carbon (PhR/NC-1), exhibited a specific surface area of 394 m 2 ·g −1 with the existence of both microporosity and mesoporosity. PhR/NC-1 carbon was evaluated as an adsorbent of Alizarin Red S (ARS) dye in batch solution. Various operating conditions were examined and the maximum adsorption capacity of 104 mg·g −1 was achieved under the following conditions, i.e., T = 25 • C, pH = 3, contact time = 1440 min. The adsorption and desorption heat was assessed by flow micro-calorimetry (FMC), and the presence of both exothermic and endothermic peaks with different intensity was evidenced, meaning a partially reversible nature of ARS adsorption. A pseudo-second-order model proved to be the most suitable kinetic model to describe the ARS adsorption according to the linear regression factor. In addition, the best isotherm equilibrium has been achieved with a Freundlich model. The results show that the eco-friendly composite carbon derived from green phenolic resin mixed with waste cotton fibers improves the removal of ARS dye from textile effluents.

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Étude cinétique et thermodynamique de l’adsorption d’un colorant basique sur la sciure de bois

Cited by 37 publications

References 20 publications

Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Evaluation of Adsorption Capacity of Methylene Blue in Aqueous Medium by Two Adsorbents: The Raw Hull of <i>Lophira Lanceolata</i> and Its Activated Carbon

Green Carbon Composite-Derived Polymer Resin and Waste Cotton Fibers for the Removal of Alizarin Red S Dye

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Étude cinétique et thermodynamique de l’adsorption d’un colorant basique sur la sciure de bois

Cited by 37 publications

References 20 publications

Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Utilization of Calcined Eggshell Waste as an Adsorbent for the Removal of Phenol from Aqueous Solution

Evaluation of Adsorption Capacity of Methylene Blue in Aqueous Medium by Two Adsorbents: The Raw Hull of &lt;i&gt;Lophira Lanceolata&lt;/i&gt; and Its Activated Carbon

Green Carbon Composite-Derived Polymer Resin and Waste Cotton Fibers for the Removal of Alizarin Red S Dye

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Product

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Evaluation of Adsorption Capacity of Methylene Blue in Aqueous Medium by Two Adsorbents: The Raw Hull of <i>Lophira Lanceolata</i> and Its Activated Carbon