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Preparation of high surface area activated carbons from tobacco stems with K2CO3 activation using microwave radiation

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Abstract:
In this paper, activated carbons with high surface area from carbonized tobacco stems with
K2CO3 activation by microwave radiation were investigated. Effects of microwave radiation
time and K2CO3/C ratio on the yield and adsorption capacities of activated carbons
were evaluated. Experimental results indicated that the optimum conditions were as follow:
microwave power 700W; microwave radiation time 30 min; K2CO3/C ratio 1.5:1. Iodine
number, amount of methylene blue adsorption and the yield of activated carbon prepared
under optimum conditions were 1834 mg/g, 517.5 mg/g and 16.65%, respectively. Surface
area, micropore volume and pore size distribution (PSD) of the carbons were determined by
the BET, H-K and DFT methods. Results showed that activated carbons had a micropore content
about 59.98% and a small number of mesopores and macropores; BET specific surface
area and total pore volume were 2557m2/g and 1.647cm3/g, respectively.

Keywords: Carbonized tobacco stems, Microwave radiation, K2CO3, High surface area, Pore size distribution

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Informasi Detail

Judul Seri

Industrial Crops and Products

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2008

Deskripsi Fisik

Industrial Crops and Products 2 7 ( 2 0 0 8 ) 341–347

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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