Preparation and characterization of an activated carbon from a date stones variety by physical activation with carbon dioxide

Sekirifa, Mohamed L.; Hadj-Mahammed, Mahfoud; Pallier, Stéphanie; Baameur, Lotfi; Richard, Dominique; Al-Dujaili, Ammar H.

doi:10.1016/j.jaap.2012.10.007

Cited by 108 publications

(46 citation statements)

References 49 publications

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“…This indicates the ability of FeCl 3 to produce carbon structure with more micropores content as compared to that obtained using H 3 PO 4 . The structural characteristics of FAC have been compared with those for carbons prepared from date pits [38][39][40][41][42] by different activators (Table 1). In this study, the surface area of FAC (780.06 m 2 /g) is higher than that reported by Hameed et al [39] who showed that the surface area of activated carbon prepared by chemical activation of date stones with potassium hydroxide was 763.40 m 2 /g.…”

Section: Characterization Of Prepared Activated Carbonmentioning

confidence: 99%

Adsorptive removal of p-nitrophenol on microporous activated carbon by FeCl3 activation: equilibrium and kinetics studies

Ahmed

Theydan

2015

Desalination and Water Treatment

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A B S T R A C TMicroporous activated carbon from biomass wastes, date pits, has been utilized as adsorbent for removal of p-nitrophenol (PNPh) from aqueous solutions. The chemical activation with FeCl 3 was adopted for preparation and the characteristics of prepared carbon (FAC) represented by iodine number, surface area, micropores volume, and mesopores volume were 761.40 mg/g, 780.06 m 2 /g, 0.468 cm 3 /g, and 0.105 cm 3 /g, respectively. The effect of variables represented by pH, adsorbent dose, contact time, and initial concentration on efficiency of FAC for PNPh removal was studied. Maximum removal efficiency of 94% was obtained at best conditions. Equilibrium adsorption data were analyzed by the Langmuir, Freundlich, and Sips isotherm models. The results showed that the best fit was achieved with the Sips isotherm equation, giving a maximum PNPh adsorption capacity of 184.86 mg/g. The adsorption kinetic data were well described by the pseudo-second-order model and the analysis of data showed that intraparticle diffusion cannot be considered as the rate-limiting step.

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Section: Characterization Of Prepared Activated Carbonmentioning

confidence: 99%

Adsorptive removal of p-nitrophenol on microporous activated carbon by FeCl3 activation: equilibrium and kinetics studies

Ahmed

Theydan

2015

Desalination and Water Treatment

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“…(Rashidi, Yusup, Ahmad, Mohamed, & Hameed, 2012;Torres-Perez, Gerente, & Andres, 2012;Sekirifa, Hadj-Mahammed, Pallier, Baameur, Richard, & Al-Dujaili, 2013). In contrast, the carbon content of activated carbon from the mixture of food waste and coagulation-flocculation sludge (FW/CFS-H 2 O) is low (32.6 %).…”

Section: Characterization Of Activated Carbonmentioning

confidence: 99%

Sustainable Conversion of Agriculture and Food Waste into Activated Carbons Devoted to Fluoride Removal from Drinking Water in Senegal

Hervy

Diop²,

Gérente

et al. 2015

IJC

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The objective of this study was to investigate the production of activated carbons (AC) from cashew shells, and millet stalks and their efficiency in fluoride retention. These agricultural residues are collected from Senegal. It is known that some regions of Sénégal, commonly called the groundnut basin, are affected by a public health problem caused by an excess of fluoride in drinking water used by these populations. The activated carbons were produced by a combined pyrolysis and activation with water steam; no other chemical compounds were added. Then, activated carbonaceous materials obtained from cashew shells and millet stalks were called CS-H 2 O and MS-H 2 O respectively. CS-H 2 O and MS-H 2 O show very good adsorbent features, and present carbon content ranges between 71 % and 86 %. The BET surface areas are 942 m² g -1 and 1234 m².g -1 for CS-H 2 O and MS-H 2 O respectively. A third activated carbon produced from food wastes and coagulation-flocculation sludge (FW/CFS-H 2 O) was produced in the same conditions. Carbon and calcium content of FW/CFS-H 2 O are 32.6 and 39.3 % respectively. The kinetics sorption were performed with all these activated carbons, then the pseudo-first equation was used to describe the kinetics sorption. Fluoride adsorption isotherms were performed with synthetic and natural water with the best activated carbon from kinetics sorption, Langmuir and Freundlich models were used to describe the experimental data. The results showed that carbonaceous materials obtained from CS-H 2 O and MS-H 2 O were weakly efficient for fluoride removal. With FW/CFS-H 2 O, the adsorption capacity is 28.48 mg.g -1 with r² = 0.99 with synthetic water.

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“…Physical activation involves carbonization of a carbonaceous materials followed by activation of the resulting char. The physical methods are typically thermal processes conducted at temperatures below 700°C using oxidizing gases like air, CO 2 and steam of H 2 O as second step after pyrolysis (Sekirifa et al, 2013). This process is used to create a porous structure that increases the adsorption capacity of AC materials.…”

Section: Introductionmentioning

confidence: 99%

Potential study of Indonesia coal for adsorbed natural gas

Monika¹

2017

IMJ

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Low rank coal was used as a precursor for the preparation of adsorbed natural gas by chemical activation with KOH-NaOH mixtures. Chemical activation process is commonly used and involves two major steps, which are heating process and chemical treatment process. The experiments were used in the various of temperatures, contact times, and rasio of sample and chemical compound. The result of process was obtained of the iodine number around of 1004 mg/g and 1198 mg/g . Based on the other study, the iodine number at 1004 mg/g and 1198 mg/g have surface area between 1000 mg/g up to 1200 mg/g. These surface area provide a methane capacity between 75 mg/g up to 80 mg/g. Keywords: activated carbon, adsorbed natural gas, surface area, iodine number. ABSTRAK

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Preparation and characterization of an activated carbon from a date stones variety by physical activation with carbon dioxide

Cited by 108 publications

References 49 publications

Adsorptive removal of p-nitrophenol on microporous activated carbon by FeCl3 activation: equilibrium and kinetics studies

Adsorptive removal of p-nitrophenol on microporous activated carbon by FeCl3 activation: equilibrium and kinetics studies

Sustainable Conversion of Agriculture and Food Waste into Activated Carbons Devoted to Fluoride Removal from Drinking Water in Senegal

Potential study of Indonesia coal for adsorbed natural gas

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