e-journal

2-Steps KOH activation of rice straw: An efficient method for preparing high-performance activated carbons

---

a b s t r a c t
Effects of both pre-treatment and number of steps in KOH activation of raw rice straw (RS) on textural
and adsorption properties of RS-derived activated carbons (ACs) were investigated. Three pre-treatment
protocols were tested: mechanical, chemical by NaOH pulping, and a combination of both. Activation of
RS-based materials was investigated, at a constant temperature of 800 C, according to two ways: a 1-
step simultaneous carbonisation–activation with KOH, and a 2-steps process: carbonisation followed
by activation by KOH. 2-Steps KOH activation was more efficient in producing activated carbons with high surface areas and high methylene blue adsorption than 1-step KOH activation. Additionally, 2-steps KOH activation increased the yield of activated carbons having moderate ash content (8–14%). Surface areas as high as 1917 m2/g were obtained when the combined mechanical–chemical pre-treatment method and a 2-steps activation process were carried out.
Keywords: Rice straw, De-ashing, Activated carbon, KOH, Adsorption

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Bioresource Technology

No. Panggil

-

Penerbit

: Elsevier Ltd. All rights reserved.., 2009

Deskripsi Fisik

Bioresource Technology 100 (2009) 3941–3947

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

yuli/agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar