Preparation of bamboo-based mesoporous activated carbon by phosphoric acid activation

Hata, Motohide; Amano, Yoshimasa; Aikawa, Masami; Machida, Motoi; Imazeki, Fumio

doi:10.7209/tanso.2014.2

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Notably, activated carbons have been focused on owing to their large adsorption capacity, high surface area, low cost and easy regeneration. In the previous research, the EFB-based activated carbons were prepared by KOH activation for methylene blue 8) and H 2 gas adsorption 9) , and by CO 2 activation 10) for urea adsorption 11) On the other hand, it has been proposed that alkaline pre-washing treatment of precursor before chemical activation could lead to the development of pore structures 12) . Thus, EFB was also treated by NaOH and then activated by the same chemical activators in order to enhance the methylene blue adsorption.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of activated carbons produced from oil palm empty fruit bunches

Sakamoto

Zaini

Amano

et al. 2019

TANSO

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Zaini b), c) , Yoshimasa Amano d), e) and Motoi Machida d), e), * Activated carbons were prepared by activating oil palm empty fruit bunches (EFB) using various chemicals including H 3 PO 4 , KOH or ZnCl 2 and were characterized by elemental analysis, nitrogen and methylene blue adsorption. The effect of the pretreatment of EFB by NaOH was also investigated. Among all samples, EFB pre-washed with NaOH and then activated with ZnCl 2 showed the greatest maximum adsorption capacity (357 mg/g) and BET specific surface area (1265 m 2 /g). The experimental data of all adsorbents were well fitted to the Langmuir isotherm model and pseudo-second-order kinetics model. This study demonstrated that ZnCl 2 activation was the best way to obtain an activated carbon, and that NaOH pre-washing was effective as well for developing mesopores in EFB activated by H 3 PO 4 and ZnCl 2 .

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