Influence of HNO3 oxidation on the structure and adsorptive properties of corncob-based activated carbon

El-Hendawy, Abdel-Nasser A.

doi:10.1016/s0008-6223(03)00029-0

Cited by 413 publications

(230 citation statements)

References 23 publications

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“…The presence of acidic functional groups on the surface of ACF could change the surface property of ACF from hydrophobicity to hydrophilicity. Additionally, oxidized ACFs possessed more adsorption sites available for the adsorption of Pb(II), such as carboxy groups, which could make Pb(II) more accessible to the inner pores of oxidized ACFs [21]. The largest value of Xm was obtained for 1500LD-13NOX-6 (0.34 mmol/g), which was 3-time higher than that of 1500LD.…”

Section: Pb(ii) Adsorption Isothermsmentioning

confidence: 96%

Adsorption of Pb(II) from Aqueous Solution on Oxidized Activated Carbon Fibers

et al. 2015

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Section: Pb(ii) Adsorption Isothermsmentioning

confidence: 96%

Adsorption of Pb(II) from Aqueous Solution on Oxidized Activated Carbon Fibers

et al. 2015

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“…From BET surface area analysis of the AC derived from the tamarind pod which using H 3 PO 4 The results from porosity analysis found that it has porosity in the range of 2.24 cc g -1 and average pore radius in the range of 52.53 Å. While the commercial activated carbons (used for filtration) which are sold in the local market generally have specific surface area of approximately 1100 m 2 g -1 (BET Theory).…”

Section: Applied Mechanics and Materials Vol 855mentioning

confidence: 99%

Production of Activated Carbon from Moldy Damaged Tamarind-Pod

Moonsri

Pongpian

Moonsri

2016

AMM

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Abstract. This research studied production of activated carbon (AC) derived from tamarind pods damaged by mold. Folk wisdom kiln which manufactured from an oil tank size of 200 L was used for pyrolysis and carbonization of tamarind pod derived from sweet and sour tamarinds. The AC was produced by using chemical activation and thermal activation at the optimal condition. Then the physical and chemical properties of the AC were investigated. From the study, it was found that optimal condition for charcoal carbonization of the tamarind pod was 400 0 C for 4 hrs. The optimal condition for thermal activation was 600 0 C for 1-2 hrs. The phosphoric acid (H 3 PO 4 ) showed higher effectiveness for activation than distillation water (H 2 O), potassium hydroxide (KOH) and zinc chloride (ZnCl 2 ). The produced AC has specific surface area of 851.58-910.31 m 2 /g (BET Theory), a pore volume of 2.24-2.32 cm 3 /g with an average pore radius of 50.90 to 52.53 Å, iodine number of 613.9-654.8 mg /g, phenols adsorption of 61.7-83.1% and apparent density 0.4528 g/cm 3 . The results from proximate analysis shown that the AC has the moisture content of 6.81-7.54%, the ash content of 6.58-7.31%, the volatile matter of 38.26-40.12% and the fixed carbon of 52.57-55.16%. The performance of the AC for acetic acid adsorption according to the Langmuir and Freundlich isotherm exhibited a monolayer adsorption isotherm and the AC adsorbed the acetic acid well and strength. Therefore the produced AC can be further used for filter material in small water treatment.

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“…These materials are characterized by their extraordinary large specific surface areas, well-developed porosity, and tunable surface containing functional groups (Baker et al 1992;Jiang et al 2003). For these reasons, activated carbons are widely used as adsorbents for the removal of organic chemicals and metal ions of environmental or economic concern from air, gases, potable water, and wastewater (El-Hendawy 2003). Activated carbon usually increases the cost of the treatment process.…”

Section: Introductionmentioning

confidence: 99%

The potential use of activated carbon prepared from Ziziphus species for removing dyes from waste waters

Regti¹,

Laamari²,

Stiriba³

et al. 2017

Appl Water Sci

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In this study, the adsorption potential of activated carbon prepared from Ziziphus mauritiana nuts for the removal of methylene blue (MB) from aqueous solution has been investigated using batch mode experiments. The effects of some operating parameters on the removal dye such as, initial pH (2-12), temperature (298-328 K), initial MB concentration (20-100 mg L -1 ), and contact time (5-70 min) were investigated. Adsorption kinetic showed that the rate adsorption followed the pseudo-second-order kinetic model. Four adsorption isotherms models were applied to experimental equilibrium data (Langmuir, Freundlich, Redlich-Peterson, and Fritz-Schlunder) and the different constants were calculated using non-linear equations models. Fritz-Schlunder model was found the best one to describe the adsorption process which suggests that the adsorption of MB onto activated carbon derived from Ziziphus mauritiana is heterogeneous with a multilayer. Thermodynamic adsorption showed that the process was endothermic and spontaneous in nature.

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Influence of HNO3 oxidation on the structure and adsorptive properties of corncob-based activated carbon

Cited by 413 publications

References 23 publications

Adsorption of Pb(II) from Aqueous Solution on Oxidized Activated Carbon Fibers

Adsorption of Pb(II) from Aqueous Solution on Oxidized Activated Carbon Fibers

Production of Activated Carbon from Moldy Damaged Tamarind-Pod

The potential use of activated carbon prepared from Ziziphus species for removing dyes from waste waters

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