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Preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation—Application in methylene blue adsorption from aqueous solution

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Abstract:
The activated carbon prepared from cotton stalk with ZnCl2 as activation was investigated under
microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated
then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl2. It indicated
that the optimum conditions were as follows: microwave power of 560W, microwave radiation
time of 9 min and the impregnation ratio of ZnCl2 was 1.6 g/g. Iodine number, amount of methylene
blue adsorption and the yield of activated carbon prepared under optimum conditionswere 972.92 mg/g,
193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbonswere characterized bypHZPC,
SEM, FT-IR, SBET and pore structural parameters. Then they were used as adsorbent for the removal of
methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage
and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.

Keywords: Activated carbon, Cotton stalk, Microwave radiation, ZnCl2, Adsorption

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 166 (2009) 1514–1521

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 MATERIAL

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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