Physical and chemical properties of the rice straw activated carbon produced from carbonization and KOH activation processes

Mohamad Jani Saad, Chin Hua Chia, Sarani Zakaria, Sajab Mohd Shaiful, Sufian Misran, Mohammad Hariz Abdul Rahman, Siew Xian Chin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, highly porous activated carbon was produced from rice straw by carbonization and followed by activation using potassium hydroxide (KOH). Activated carbon samples were prepared under different activation temperatures, i.e., 650, 750 and 850°C, and their physical and chemical properties were characterized accordingly. The BET surface area of the activated carbon samples was increased from 520 to 1048 m2/g with the increase of activation temperature from 650 to 850°C. These values were much higher than the non-activated rice straw carbon i.e., 1.16 m2/g. The pore sizes of the rice straw activated carbon were found to be mainly in mesopore size range of 2-50 nm. Total carbon content of the AC sample was increased from 8.35% to 31.73% with the increase of activation temperature from 650 to 850°C. XRD and Raman spectroscopy confirmed the graphite properties of the activated carbons produced. SEM images proved high porosity of the AC after KOH activation.

Original languageEnglish
Pages (from-to)385-391
Number of pages7
JournalSains Malaysiana
Volume48
Issue number2
DOIs
Publication statusPublished - 1 Feb 2019

Fingerprint

Carbonization
Straw
Activated carbon
Chemical properties
Physical properties
Chemical activation
Carbon
Graphite
Temperature
Pore size
Raman spectroscopy
Porosity
Scanning electron microscopy

Keywords

  • Activated carbon
  • Biomass
  • Lignocellulosic

ASJC Scopus subject areas

  • General

Cite this

Physical and chemical properties of the rice straw activated carbon produced from carbonization and KOH activation processes. / Saad, Mohamad Jani; Chia, Chin Hua; Zakaria, Sarani; Mohd Shaiful, Sajab; Misran, Sufian; Rahman, Mohammad Hariz Abdul; Chin, Siew Xian.

In: Sains Malaysiana, Vol. 48, No. 2, 01.02.2019, p. 385-391.

Research output: Contribution to journalArticle

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AU - Zakaria, Sarani

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AU - Misran, Sufian

AU - Rahman, Mohammad Hariz Abdul

AU - Chin, Siew Xian

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