Highly mesoporous K2CO3 and KOH/activated carbon for SDBS removal from water samples: Batch and fixed-bed column adsorption process

Valizadeh, Soheil; Younesi, Habibollah; Bahramifar, Nader

doi:10.1016/j.enmm.2016.06.005

Cited by 45 publications

(21 citation statements)

References 40 publications

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“…In addition, it is to be expected that new micro-and mesopores were created inside carbons to increase the SSA. Similar results have been reported elsewhere with the following reactions [28,38,39]:…”

Section: Effect Of Impregnation Ratio and Activationsupporting

confidence: 91%

Activated Carbon by Potassium Carbonate Activation from Pine Sawdust (Pinusmontezumae Lamb.)

et al. 2020

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Activated carbon (AC) was gained from Pinus montezumae (PM) wood sawdust and chemical activation with K2CO3 was used for obtaining activated carbons. Variations in reaction conditions such as temperature, impregnation ratio (IR), and activation time were carried out to study their influence on the specific surface area (SSA) and average pore volume (APV) in AC. Materials were analyzed by means of Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) to determine the functional groups, pore structure, and morphology of pine sawdust and activated carbons. Activated carbons were amorphous in nature with some crystalline regions.

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Section: Effect Of Impregnation Ratio and Activationsupporting

confidence: 91%

Activated Carbon by Potassium Carbonate Activation from Pine Sawdust (Pinusmontezumae Lamb.)

et al. 2020

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“…The band around 1100 and 1000 cm −1 was because of C-O stretching vibrations. On the other hand, the band between 1500 and 1600 cm −1 can be ascribed to C=C aromatic ring stretching vibration which can be also observed by the help of a weaker band between 765 and 530 cm −1 (Kılıç et al 2012;Valizadeh et al 2016).…”

Section: Characterization Of Activated Carbonsmentioning

confidence: 91%

Chemically activated carbon production from agricultural waste of chickpea and its application for heavy metal adsorption: equilibrium, kinetic, and thermodynamic studies

et al. 2019

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The purpose of this study was to produce activated carbons (ACs) from chickpea (Cicer arietinum) husks by chemical activation (KOH and K 2 CO 3) and to examine their feasibility in removing heavy metals from aqueous solutions. In the case of KOH impregnation with a ratio of 50 wt%, the most developed porosity was achieved, with a BET surface area of 2082 m 2 /g and a total pore volume of 1.07 cm 3 /g. By using the product, the maximum adsorption capacities were found to be 135.8, 59.6, and 56.2 mg/g for Pb(II), Cr(VI), and Cu(II), respectively. The experimental data were analyzed by various adsorption isotherm and kinetic models. Thermodynamic parameters such as ΔG°, ΔH°, and ΔS° were also calculated. The results obtained in this study shows that adsorption onto chickpea-husk-derived activated carbon was endothermic and spontaneous for the removal of heavy metals from aqueous solutions.

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“…and the adsorbate, or a chemical reaction between adsorbent and adsorbate. In fact, at pH<pH ZCN , the surface of the carbon is positively charged, which promotes the adsorption of the anions, while the adsorption of cations is favored at pH>pH ZCN , where the surface of the carbon is negatively charged [28][29][30]135,159,176,184,196,211,[222][223][224]. Tu et al [183] studied the sorption properties of Bermuda grass derived activated carbon for Cr(VI) removal.…”

Section: Timementioning

confidence: 99%

Current State of Porous Carbon for Wastewater Treatment

et al. 2020

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Porous materials constitute an attractive research field due to their high specific surfaces; high chemical stabilities; abundant pores; special electrical, optical, thermal, and mechanical properties; and their often higher reactivities. These materials are currently generating a great deal of enthusiasm, and they have been used in large and diverse applications, such as those relating to sensors and biosensors, catalysis and biocatalysis, separation and purification techniques, acoustic and electrical insulation, transport gas or charged species, drug delivery, and electrochemistry. Porous carbons are an important class of porous materials that have grown rapidly in recent years. They have the advantages of a tunable pore structure, good physical and chemical stability, a variable specific surface, and the possibility of easy functionalization. This gives them new properties and allows them to improve their performance for a given application. This review paper intends to understand how porous carbons involve the removal of pollutants from water, e.g., heavy metal ions, dyes, and organic or inorganic molecules. First, a general overview description of the different precursors and the manufacturing methods of porous carbons is illustrated. The second part is devoted to reporting some applications such using porous carbon materials as an adsorbent. It appears that the use of porous materials at different scales for these applications is very promising for wastewater treatment industries.

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Highly mesoporous K2CO3 and KOH/activated carbon for SDBS removal from water samples: Batch and fixed-bed column adsorption process

Cited by 45 publications

References 40 publications

Activated Carbon by Potassium Carbonate Activation from Pine Sawdust (Pinusmontezumae Lamb.)

Activated Carbon by Potassium Carbonate Activation from Pine Sawdust (Pinusmontezumae Lamb.)

Chemically activated carbon production from agricultural waste of chickpea and its application for heavy metal adsorption: equilibrium, kinetic, and thermodynamic studies

Current State of Porous Carbon for Wastewater Treatment

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